Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1 | #define JEMALLOC_ARENA_C_ |
Jason Evans | 376b152 | 2010-02-11 14:45:59 -0800 | [diff] [blame] | 2 | #include "jemalloc/internal/jemalloc_internal.h" |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3 | |
| 4 | /******************************************************************************/ |
| 5 | /* Data. */ |
| 6 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 7 | purge_mode_t opt_purge = PURGE_DEFAULT; |
| 8 | const char *purge_mode_names[] = { |
| 9 | "ratio", |
| 10 | "decay", |
| 11 | "N/A" |
| 12 | }; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 13 | ssize_t opt_lg_dirty_mult = LG_DIRTY_MULT_DEFAULT; |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 14 | static ssize_t lg_dirty_mult_default; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 15 | ssize_t opt_decay_time = DECAY_TIME_DEFAULT; |
| 16 | static ssize_t decay_time_default; |
| 17 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 18 | arena_bin_info_t arena_bin_info[NBINS]; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 19 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 20 | size_t map_bias; |
| 21 | size_t map_misc_offset; |
| 22 | size_t arena_maxrun; /* Max run size for arenas. */ |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 23 | size_t large_maxclass; /* Max large size class. */ |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 24 | size_t run_quantize_max; /* Max run_quantize_*() input. */ |
| 25 | static size_t small_maxrun; /* Max run size for small size classes. */ |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 26 | static bool *small_run_tab; /* Valid small run page multiples. */ |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 27 | static size_t *run_quantize_floor_tab; /* run_quantize_floor() memoization. */ |
| 28 | static size_t *run_quantize_ceil_tab; /* run_quantize_ceil() memoization. */ |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 29 | unsigned nlclasses; /* Number of large size classes. */ |
| 30 | unsigned nhclasses; /* Number of huge size classes. */ |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 31 | static szind_t runs_avail_bias; /* Size index for first runs_avail tree. */ |
| 32 | static szind_t runs_avail_nclasses; /* Number of runs_avail trees. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 33 | |
| 34 | /******************************************************************************/ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 35 | /* |
| 36 | * Function prototypes for static functions that are referenced prior to |
| 37 | * definition. |
| 38 | */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 39 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 40 | static void arena_purge_to_limit(arena_t *arena, size_t ndirty_limit); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 41 | static void arena_run_dalloc(arena_t *arena, arena_run_t *run, bool dirty, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 42 | bool cleaned, bool decommitted); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 43 | static void arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, |
| 44 | arena_run_t *run, arena_bin_t *bin); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 45 | static void arena_bin_lower_run(arena_t *arena, arena_chunk_t *chunk, |
| 46 | arena_run_t *run, arena_bin_t *bin); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 47 | |
| 48 | /******************************************************************************/ |
| 49 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 50 | JEMALLOC_INLINE_C size_t |
Joshua Kahn | 13b4015 | 2015-09-18 16:58:17 -0400 | [diff] [blame] | 51 | arena_miscelm_size_get(const arena_chunk_map_misc_t *miscelm) |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 52 | { |
| 53 | arena_chunk_t *chunk; |
| 54 | size_t pageind, mapbits; |
| 55 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 56 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm); |
| 57 | pageind = arena_miscelm_to_pageind(miscelm); |
| 58 | mapbits = arena_mapbits_get(chunk, pageind); |
Jason Evans | 5ef33a9 | 2015-08-19 14:12:05 -0700 | [diff] [blame] | 59 | return (arena_mapbits_size_decode(mapbits)); |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 60 | } |
| 61 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 62 | static size_t |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 63 | run_quantize_floor_compute(size_t size) |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 64 | { |
| 65 | size_t qsize; |
| 66 | |
| 67 | assert(size != 0); |
| 68 | assert(size == PAGE_CEILING(size)); |
| 69 | |
| 70 | /* Don't change sizes that are valid small run sizes. */ |
| 71 | if (size <= small_maxrun && small_run_tab[size >> LG_PAGE]) |
| 72 | return (size); |
| 73 | |
| 74 | /* |
| 75 | * Round down to the nearest run size that can actually be requested |
| 76 | * during normal large allocation. Add large_pad so that cache index |
| 77 | * randomization can offset the allocation from the page boundary. |
| 78 | */ |
| 79 | qsize = index2size(size2index(size - large_pad + 1) - 1) + large_pad; |
| 80 | if (qsize <= SMALL_MAXCLASS + large_pad) |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 81 | return (run_quantize_floor_compute(size - large_pad)); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 82 | assert(qsize <= size); |
| 83 | return (qsize); |
| 84 | } |
| 85 | |
| 86 | static size_t |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 87 | run_quantize_ceil_compute_hard(size_t size) |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 88 | { |
| 89 | size_t large_run_size_next; |
| 90 | |
| 91 | assert(size != 0); |
| 92 | assert(size == PAGE_CEILING(size)); |
| 93 | |
| 94 | /* |
| 95 | * Return the next quantized size greater than the input size. |
| 96 | * Quantized sizes comprise the union of run sizes that back small |
| 97 | * region runs, and run sizes that back large regions with no explicit |
| 98 | * alignment constraints. |
| 99 | */ |
| 100 | |
| 101 | if (size > SMALL_MAXCLASS) { |
| 102 | large_run_size_next = PAGE_CEILING(index2size(size2index(size - |
| 103 | large_pad) + 1) + large_pad); |
| 104 | } else |
| 105 | large_run_size_next = SIZE_T_MAX; |
| 106 | if (size >= small_maxrun) |
| 107 | return (large_run_size_next); |
| 108 | |
| 109 | while (true) { |
| 110 | size += PAGE; |
| 111 | assert(size <= small_maxrun); |
| 112 | if (small_run_tab[size >> LG_PAGE]) { |
| 113 | if (large_run_size_next < size) |
| 114 | return (large_run_size_next); |
| 115 | return (size); |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | static size_t |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 121 | run_quantize_ceil_compute(size_t size) |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 122 | { |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 123 | size_t qsize = run_quantize_floor_compute(size); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 124 | |
| 125 | if (qsize < size) { |
| 126 | /* |
| 127 | * Skip a quantization that may have an adequately large run, |
| 128 | * because under-sized runs may be mixed in. This only happens |
| 129 | * when an unusual size is requested, i.e. for aligned |
| 130 | * allocation, and is just one of several places where linear |
| 131 | * search would potentially find sufficiently aligned available |
| 132 | * memory somewhere lower. |
| 133 | */ |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 134 | qsize = run_quantize_ceil_compute_hard(qsize); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 135 | } |
| 136 | return (qsize); |
| 137 | } |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 138 | |
| 139 | #ifdef JEMALLOC_JET |
| 140 | #undef run_quantize_floor |
| 141 | #define run_quantize_floor JEMALLOC_N(run_quantize_floor_impl) |
| 142 | #endif |
| 143 | static size_t |
| 144 | run_quantize_floor(size_t size) |
| 145 | { |
| 146 | size_t ret; |
| 147 | |
| 148 | assert(size > 0); |
| 149 | assert(size <= run_quantize_max); |
| 150 | assert((size & PAGE_MASK) == 0); |
| 151 | |
| 152 | ret = run_quantize_floor_tab[(size >> LG_PAGE) - 1]; |
| 153 | assert(ret == run_quantize_floor_compute(size)); |
| 154 | return (ret); |
| 155 | } |
| 156 | #ifdef JEMALLOC_JET |
| 157 | #undef run_quantize_floor |
| 158 | #define run_quantize_floor JEMALLOC_N(run_quantize_floor) |
| 159 | run_quantize_t *run_quantize_floor = JEMALLOC_N(run_quantize_floor_impl); |
| 160 | #endif |
| 161 | |
| 162 | #ifdef JEMALLOC_JET |
| 163 | #undef run_quantize_ceil |
| 164 | #define run_quantize_ceil JEMALLOC_N(run_quantize_ceil_impl) |
| 165 | #endif |
| 166 | static size_t |
| 167 | run_quantize_ceil(size_t size) |
| 168 | { |
| 169 | size_t ret; |
| 170 | |
| 171 | assert(size > 0); |
| 172 | assert(size <= run_quantize_max); |
| 173 | assert((size & PAGE_MASK) == 0); |
| 174 | |
| 175 | ret = run_quantize_ceil_tab[(size >> LG_PAGE) - 1]; |
| 176 | assert(ret == run_quantize_ceil_compute(size)); |
| 177 | return (ret); |
| 178 | } |
Jason Evans | a9a4684 | 2016-02-22 14:58:05 -0800 | [diff] [blame] | 179 | #ifdef JEMALLOC_JET |
| 180 | #undef run_quantize_ceil |
| 181 | #define run_quantize_ceil JEMALLOC_N(run_quantize_ceil) |
| 182 | run_quantize_t *run_quantize_ceil = JEMALLOC_N(run_quantize_ceil_impl); |
| 183 | #endif |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 184 | |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 185 | static ph_heap_t * |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 186 | arena_runs_avail_get(arena_t *arena, szind_t ind) |
| 187 | { |
| 188 | |
| 189 | assert(ind >= runs_avail_bias); |
| 190 | assert(ind - runs_avail_bias < runs_avail_nclasses); |
| 191 | |
| 192 | return (&arena->runs_avail[ind - runs_avail_bias]); |
| 193 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 194 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 195 | static void |
| 196 | arena_avail_insert(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 197 | size_t npages) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 198 | { |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 199 | szind_t ind = size2index(run_quantize_floor(arena_miscelm_size_get( |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 200 | arena_miscelm_get_const(chunk, pageind)))); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 201 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 202 | LG_PAGE)); |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 203 | ph_insert(arena_runs_avail_get(arena, ind), |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 204 | &arena_miscelm_get_mutable(chunk, pageind)->ph_link); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 205 | } |
| 206 | |
| 207 | static void |
| 208 | arena_avail_remove(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 209 | size_t npages) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 210 | { |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 211 | szind_t ind = size2index(run_quantize_floor(arena_miscelm_size_get( |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 212 | arena_miscelm_get_const(chunk, pageind)))); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 213 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 214 | LG_PAGE)); |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 215 | ph_remove(arena_runs_avail_get(arena, ind), |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 216 | &arena_miscelm_get_mutable(chunk, pageind)->ph_link); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 217 | } |
| 218 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 219 | static void |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 220 | arena_run_dirty_insert(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 221 | size_t npages) |
| 222 | { |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 223 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get_mutable(chunk, |
| 224 | pageind); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 225 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 226 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 227 | LG_PAGE)); |
| 228 | assert(arena_mapbits_dirty_get(chunk, pageind) == CHUNK_MAP_DIRTY); |
| 229 | assert(arena_mapbits_dirty_get(chunk, pageind+npages-1) == |
| 230 | CHUNK_MAP_DIRTY); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 231 | |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 232 | qr_new(&miscelm->rd, rd_link); |
| 233 | qr_meld(&arena->runs_dirty, &miscelm->rd, rd_link); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 234 | arena->ndirty += npages; |
| 235 | } |
| 236 | |
| 237 | static void |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 238 | arena_run_dirty_remove(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 239 | size_t npages) |
| 240 | { |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 241 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get_mutable(chunk, |
| 242 | pageind); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 243 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 244 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 245 | LG_PAGE)); |
| 246 | assert(arena_mapbits_dirty_get(chunk, pageind) == CHUNK_MAP_DIRTY); |
| 247 | assert(arena_mapbits_dirty_get(chunk, pageind+npages-1) == |
| 248 | CHUNK_MAP_DIRTY); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 249 | |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 250 | qr_remove(&miscelm->rd, rd_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 251 | assert(arena->ndirty >= npages); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 252 | arena->ndirty -= npages; |
| 253 | } |
| 254 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 255 | static size_t |
| 256 | arena_chunk_dirty_npages(const extent_node_t *node) |
| 257 | { |
| 258 | |
| 259 | return (extent_node_size_get(node) >> LG_PAGE); |
| 260 | } |
| 261 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 262 | void |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 263 | arena_chunk_cache_maybe_insert(arena_t *arena, extent_node_t *node, bool cache) |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 264 | { |
| 265 | |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 266 | if (cache) { |
Jason Evans | 47701b2 | 2015-02-17 22:23:10 -0800 | [diff] [blame] | 267 | extent_node_dirty_linkage_init(node); |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 268 | extent_node_dirty_insert(node, &arena->runs_dirty, |
| 269 | &arena->chunks_cache); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 270 | arena->ndirty += arena_chunk_dirty_npages(node); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | void |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 275 | arena_chunk_cache_maybe_remove(arena_t *arena, extent_node_t *node, bool dirty) |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 276 | { |
| 277 | |
| 278 | if (dirty) { |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 279 | extent_node_dirty_remove(node); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 280 | assert(arena->ndirty >= arena_chunk_dirty_npages(node)); |
| 281 | arena->ndirty -= arena_chunk_dirty_npages(node); |
| 282 | } |
| 283 | } |
| 284 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 285 | JEMALLOC_INLINE_C void * |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 286 | arena_run_reg_alloc(arena_run_t *run, arena_bin_info_t *bin_info) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 287 | { |
| 288 | void *ret; |
Jason Evans | 42ce80e | 2016-02-25 20:51:00 -0800 | [diff] [blame] | 289 | size_t regind; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 290 | arena_chunk_map_misc_t *miscelm; |
| 291 | void *rpages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 292 | |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 293 | assert(run->nfree > 0); |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 294 | assert(!bitmap_full(run->bitmap, &bin_info->bitmap_info)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 295 | |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 296 | regind = (unsigned)bitmap_sfu(run->bitmap, &bin_info->bitmap_info); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 297 | miscelm = arena_run_to_miscelm(run); |
| 298 | rpages = arena_miscelm_to_rpages(miscelm); |
| 299 | ret = (void *)((uintptr_t)rpages + (uintptr_t)bin_info->reg0_offset + |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 300 | (uintptr_t)(bin_info->reg_interval * regind)); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 301 | run->nfree--; |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 302 | return (ret); |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 303 | } |
| 304 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 305 | JEMALLOC_INLINE_C void |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 306 | arena_run_reg_dalloc(arena_run_t *run, void *ptr) |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 307 | { |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 308 | arena_chunk_t *chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 309 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
| 310 | size_t mapbits = arena_mapbits_get(chunk, pageind); |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 311 | szind_t binind = arena_ptr_small_binind_get(ptr, mapbits); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 312 | arena_bin_info_t *bin_info = &arena_bin_info[binind]; |
Jason Evans | 42ce80e | 2016-02-25 20:51:00 -0800 | [diff] [blame] | 313 | size_t regind = arena_run_regind(run, bin_info, ptr); |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 314 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 315 | assert(run->nfree < bin_info->nregs); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 316 | /* Freeing an interior pointer can cause assertion failure. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 317 | assert(((uintptr_t)ptr - |
| 318 | ((uintptr_t)arena_miscelm_to_rpages(arena_run_to_miscelm(run)) + |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 319 | (uintptr_t)bin_info->reg0_offset)) % |
| 320 | (uintptr_t)bin_info->reg_interval == 0); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 321 | assert((uintptr_t)ptr >= |
| 322 | (uintptr_t)arena_miscelm_to_rpages(arena_run_to_miscelm(run)) + |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 323 | (uintptr_t)bin_info->reg0_offset); |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 324 | /* Freeing an unallocated pointer can cause assertion failure. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 325 | assert(bitmap_get(run->bitmap, &bin_info->bitmap_info, regind)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 326 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 327 | bitmap_unset(run->bitmap, &bin_info->bitmap_info, regind); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 328 | run->nfree++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 329 | } |
| 330 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 331 | JEMALLOC_INLINE_C void |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 332 | arena_run_zero(arena_chunk_t *chunk, size_t run_ind, size_t npages) |
| 333 | { |
| 334 | |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 335 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
| 336 | (run_ind << LG_PAGE)), (npages << LG_PAGE)); |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 337 | memset((void *)((uintptr_t)chunk + (run_ind << LG_PAGE)), 0, |
| 338 | (npages << LG_PAGE)); |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 339 | } |
| 340 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 341 | JEMALLOC_INLINE_C void |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 342 | arena_run_page_mark_zeroed(arena_chunk_t *chunk, size_t run_ind) |
| 343 | { |
| 344 | |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 345 | JEMALLOC_VALGRIND_MAKE_MEM_DEFINED((void *)((uintptr_t)chunk + (run_ind |
| 346 | << LG_PAGE)), PAGE); |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 347 | } |
| 348 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 349 | JEMALLOC_INLINE_C void |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 350 | arena_run_page_validate_zeroed(arena_chunk_t *chunk, size_t run_ind) |
Jason Evans | 21fb95b | 2010-10-18 17:45:40 -0700 | [diff] [blame] | 351 | { |
Jason Evans | d4bab21 | 2010-10-24 20:08:37 -0700 | [diff] [blame] | 352 | size_t i; |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 353 | UNUSED size_t *p = (size_t *)((uintptr_t)chunk + (run_ind << LG_PAGE)); |
Jason Evans | d4bab21 | 2010-10-24 20:08:37 -0700 | [diff] [blame] | 354 | |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 355 | arena_run_page_mark_zeroed(chunk, run_ind); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 356 | for (i = 0; i < PAGE / sizeof(size_t); i++) |
Jason Evans | 21fb95b | 2010-10-18 17:45:40 -0700 | [diff] [blame] | 357 | assert(p[i] == 0); |
| 358 | } |
Jason Evans | 21fb95b | 2010-10-18 17:45:40 -0700 | [diff] [blame] | 359 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 360 | static void |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 361 | arena_nactive_add(arena_t *arena, size_t add_pages) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 362 | { |
| 363 | |
| 364 | if (config_stats) { |
Jason Evans | 3763d3b | 2016-02-26 17:29:35 -0800 | [diff] [blame] | 365 | size_t cactive_add = CHUNK_CEILING((arena->nactive + |
| 366 | add_pages) << LG_PAGE) - CHUNK_CEILING(arena->nactive << |
Jason Evans | 1522937 | 2014-08-06 23:38:39 -0700 | [diff] [blame] | 367 | LG_PAGE); |
Jason Evans | 3763d3b | 2016-02-26 17:29:35 -0800 | [diff] [blame] | 368 | if (cactive_add != 0) |
| 369 | stats_cactive_add(cactive_add); |
| 370 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 371 | arena->nactive += add_pages; |
Jason Evans | 3763d3b | 2016-02-26 17:29:35 -0800 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | static void |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 375 | arena_nactive_sub(arena_t *arena, size_t sub_pages) |
Jason Evans | 3763d3b | 2016-02-26 17:29:35 -0800 | [diff] [blame] | 376 | { |
| 377 | |
| 378 | if (config_stats) { |
| 379 | size_t cactive_sub = CHUNK_CEILING(arena->nactive << LG_PAGE) - |
| 380 | CHUNK_CEILING((arena->nactive - sub_pages) << LG_PAGE); |
| 381 | if (cactive_sub != 0) |
| 382 | stats_cactive_sub(cactive_sub); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 383 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 384 | arena->nactive -= sub_pages; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | static void |
| 388 | arena_run_split_remove(arena_t *arena, arena_chunk_t *chunk, size_t run_ind, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 389 | size_t flag_dirty, size_t flag_decommitted, size_t need_pages) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 390 | { |
| 391 | size_t total_pages, rem_pages; |
| 392 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 393 | assert(flag_dirty == 0 || flag_decommitted == 0); |
| 394 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 395 | total_pages = arena_mapbits_unallocated_size_get(chunk, run_ind) >> |
| 396 | LG_PAGE; |
| 397 | assert(arena_mapbits_dirty_get(chunk, run_ind+total_pages-1) == |
| 398 | flag_dirty); |
| 399 | assert(need_pages <= total_pages); |
| 400 | rem_pages = total_pages - need_pages; |
| 401 | |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 402 | arena_avail_remove(arena, chunk, run_ind, total_pages); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 403 | if (flag_dirty != 0) |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 404 | arena_run_dirty_remove(arena, chunk, run_ind, total_pages); |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 405 | arena_nactive_add(arena, need_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 406 | |
| 407 | /* Keep track of trailing unused pages for later use. */ |
| 408 | if (rem_pages > 0) { |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 409 | size_t flags = flag_dirty | flag_decommitted; |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 410 | size_t flag_unzeroed_mask = (flags == 0) ? CHUNK_MAP_UNZEROED : |
| 411 | 0; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 412 | |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 413 | arena_mapbits_unallocated_set(chunk, run_ind+need_pages, |
| 414 | (rem_pages << LG_PAGE), flags | |
| 415 | (arena_mapbits_unzeroed_get(chunk, run_ind+need_pages) & |
| 416 | flag_unzeroed_mask)); |
| 417 | arena_mapbits_unallocated_set(chunk, run_ind+total_pages-1, |
| 418 | (rem_pages << LG_PAGE), flags | |
| 419 | (arena_mapbits_unzeroed_get(chunk, run_ind+total_pages-1) & |
| 420 | flag_unzeroed_mask)); |
| 421 | if (flag_dirty != 0) { |
| 422 | arena_run_dirty_insert(arena, chunk, run_ind+need_pages, |
| 423 | rem_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 424 | } |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 425 | arena_avail_insert(arena, chunk, run_ind+need_pages, rem_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 426 | } |
| 427 | } |
| 428 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 429 | static bool |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 430 | arena_run_split_large_helper(arena_t *arena, arena_run_t *run, size_t size, |
| 431 | bool remove, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 432 | { |
| 433 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 434 | arena_chunk_map_misc_t *miscelm; |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 435 | size_t flag_dirty, flag_decommitted, run_ind, need_pages; |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 436 | size_t flag_unzeroed_mask; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 437 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 438 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 439 | miscelm = arena_run_to_miscelm(run); |
| 440 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 441 | flag_dirty = arena_mapbits_dirty_get(chunk, run_ind); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 442 | flag_decommitted = arena_mapbits_decommitted_get(chunk, run_ind); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 443 | need_pages = (size >> LG_PAGE); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 444 | assert(need_pages > 0); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 445 | |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 446 | if (flag_decommitted != 0 && arena->chunk_hooks.commit(chunk, chunksize, |
| 447 | run_ind << LG_PAGE, size, arena->ind)) |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 448 | return (true); |
| 449 | |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 450 | if (remove) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 451 | arena_run_split_remove(arena, chunk, run_ind, flag_dirty, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 452 | flag_decommitted, need_pages); |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 453 | } |
| 454 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 455 | if (zero) { |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 456 | if (flag_decommitted != 0) { |
| 457 | /* The run is untouched, and therefore zeroed. */ |
| 458 | JEMALLOC_VALGRIND_MAKE_MEM_DEFINED((void |
| 459 | *)((uintptr_t)chunk + (run_ind << LG_PAGE)), |
| 460 | (need_pages << LG_PAGE)); |
| 461 | } else if (flag_dirty != 0) { |
| 462 | /* The run is dirty, so all pages must be zeroed. */ |
| 463 | arena_run_zero(chunk, run_ind, need_pages); |
| 464 | } else { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 465 | /* |
| 466 | * The run is clean, so some pages may be zeroed (i.e. |
| 467 | * never before touched). |
| 468 | */ |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 469 | size_t i; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 470 | for (i = 0; i < need_pages; i++) { |
| 471 | if (arena_mapbits_unzeroed_get(chunk, run_ind+i) |
| 472 | != 0) |
| 473 | arena_run_zero(chunk, run_ind+i, 1); |
| 474 | else if (config_debug) { |
| 475 | arena_run_page_validate_zeroed(chunk, |
| 476 | run_ind+i); |
| 477 | } else { |
| 478 | arena_run_page_mark_zeroed(chunk, |
| 479 | run_ind+i); |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 480 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 481 | } |
| 482 | } |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 483 | } else { |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 484 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 485 | (run_ind << LG_PAGE)), (need_pages << LG_PAGE)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 486 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 487 | |
| 488 | /* |
| 489 | * Set the last element first, in case the run only contains one page |
| 490 | * (i.e. both statements set the same element). |
| 491 | */ |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 492 | flag_unzeroed_mask = (flag_dirty | flag_decommitted) == 0 ? |
| 493 | CHUNK_MAP_UNZEROED : 0; |
| 494 | arena_mapbits_large_set(chunk, run_ind+need_pages-1, 0, flag_dirty | |
| 495 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 496 | run_ind+need_pages-1))); |
| 497 | arena_mapbits_large_set(chunk, run_ind, size, flag_dirty | |
| 498 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, run_ind))); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 499 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 500 | } |
| 501 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 502 | static bool |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 503 | arena_run_split_large(arena_t *arena, arena_run_t *run, size_t size, bool zero) |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 504 | { |
| 505 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 506 | return (arena_run_split_large_helper(arena, run, size, true, zero)); |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 507 | } |
| 508 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 509 | static bool |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 510 | arena_run_init_large(arena_t *arena, arena_run_t *run, size_t size, bool zero) |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 511 | { |
| 512 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 513 | return (arena_run_split_large_helper(arena, run, size, false, zero)); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 514 | } |
| 515 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 516 | static bool |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 517 | arena_run_split_small(arena_t *arena, arena_run_t *run, size_t size, |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 518 | szind_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 519 | { |
| 520 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 521 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 522 | size_t flag_dirty, flag_decommitted, run_ind, need_pages, i; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 523 | |
| 524 | assert(binind != BININD_INVALID); |
| 525 | |
| 526 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 527 | miscelm = arena_run_to_miscelm(run); |
| 528 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 529 | flag_dirty = arena_mapbits_dirty_get(chunk, run_ind); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 530 | flag_decommitted = arena_mapbits_decommitted_get(chunk, run_ind); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 531 | need_pages = (size >> LG_PAGE); |
| 532 | assert(need_pages > 0); |
| 533 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 534 | if (flag_decommitted != 0 && arena->chunk_hooks.commit(chunk, chunksize, |
| 535 | run_ind << LG_PAGE, size, arena->ind)) |
| 536 | return (true); |
| 537 | |
| 538 | arena_run_split_remove(arena, chunk, run_ind, flag_dirty, |
| 539 | flag_decommitted, need_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 540 | |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 541 | for (i = 0; i < need_pages; i++) { |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 542 | size_t flag_unzeroed = arena_mapbits_unzeroed_get(chunk, |
| 543 | run_ind+i); |
| 544 | arena_mapbits_small_set(chunk, run_ind+i, i, binind, |
| 545 | flag_unzeroed); |
| 546 | if (config_debug && flag_dirty == 0 && flag_unzeroed == 0) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 547 | arena_run_page_validate_zeroed(chunk, run_ind+i); |
| 548 | } |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 549 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 550 | (run_ind << LG_PAGE)), (need_pages << LG_PAGE)); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 551 | return (false); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | static arena_chunk_t * |
| 555 | arena_chunk_init_spare(arena_t *arena) |
| 556 | { |
| 557 | arena_chunk_t *chunk; |
| 558 | |
| 559 | assert(arena->spare != NULL); |
| 560 | |
| 561 | chunk = arena->spare; |
| 562 | arena->spare = NULL; |
| 563 | |
| 564 | assert(arena_mapbits_allocated_get(chunk, map_bias) == 0); |
| 565 | assert(arena_mapbits_allocated_get(chunk, chunk_npages-1) == 0); |
| 566 | assert(arena_mapbits_unallocated_size_get(chunk, map_bias) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 567 | arena_maxrun); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 568 | assert(arena_mapbits_unallocated_size_get(chunk, chunk_npages-1) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 569 | arena_maxrun); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 570 | assert(arena_mapbits_dirty_get(chunk, map_bias) == |
| 571 | arena_mapbits_dirty_get(chunk, chunk_npages-1)); |
| 572 | |
| 573 | return (chunk); |
| 574 | } |
| 575 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 576 | static bool |
| 577 | arena_chunk_register(arena_t *arena, arena_chunk_t *chunk, bool zero) |
| 578 | { |
| 579 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 580 | /* |
| 581 | * The extent node notion of "committed" doesn't directly apply to |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 582 | * arena chunks. Arbitrarily mark them as committed. The commit state |
| 583 | * of runs is tracked individually, and upon chunk deallocation the |
| 584 | * entire chunk is in a consistent commit state. |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 585 | */ |
| 586 | extent_node_init(&chunk->node, arena, chunk, chunksize, zero, true); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 587 | extent_node_achunk_set(&chunk->node, true); |
| 588 | return (chunk_register(chunk, &chunk->node)); |
| 589 | } |
| 590 | |
| 591 | static arena_chunk_t * |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 592 | arena_chunk_alloc_internal_hard(arena_t *arena, chunk_hooks_t *chunk_hooks, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 593 | bool *zero, bool *commit) |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 594 | { |
| 595 | arena_chunk_t *chunk; |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 596 | |
| 597 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 598 | |
| 599 | chunk = (arena_chunk_t *)chunk_alloc_wrapper(arena, chunk_hooks, NULL, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 600 | chunksize, chunksize, zero, commit); |
| 601 | if (chunk != NULL && !*commit) { |
| 602 | /* Commit header. */ |
| 603 | if (chunk_hooks->commit(chunk, chunksize, 0, map_bias << |
| 604 | LG_PAGE, arena->ind)) { |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 605 | chunk_dalloc_wrapper(arena, chunk_hooks, (void *)chunk, |
| 606 | chunksize, *zero, *commit); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 607 | chunk = NULL; |
| 608 | } |
| 609 | } |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 610 | if (chunk != NULL && arena_chunk_register(arena, chunk, *zero)) { |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 611 | if (!*commit) { |
| 612 | /* Undo commit of header. */ |
| 613 | chunk_hooks->decommit(chunk, chunksize, 0, map_bias << |
| 614 | LG_PAGE, arena->ind); |
| 615 | } |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 616 | chunk_dalloc_wrapper(arena, chunk_hooks, (void *)chunk, |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 617 | chunksize, *zero, *commit); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 618 | chunk = NULL; |
| 619 | } |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 620 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 621 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 622 | return (chunk); |
| 623 | } |
| 624 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 625 | static arena_chunk_t * |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 626 | arena_chunk_alloc_internal(arena_t *arena, bool *zero, bool *commit) |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 627 | { |
| 628 | arena_chunk_t *chunk; |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 629 | chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER; |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 630 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 631 | chunk = chunk_alloc_cache(arena, &chunk_hooks, NULL, chunksize, |
| 632 | chunksize, zero, true); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 633 | if (chunk != NULL) { |
| 634 | if (arena_chunk_register(arena, chunk, *zero)) { |
| 635 | chunk_dalloc_cache(arena, &chunk_hooks, chunk, |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 636 | chunksize, true); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 637 | return (NULL); |
| 638 | } |
| 639 | *commit = true; |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 640 | } |
| 641 | if (chunk == NULL) { |
| 642 | chunk = arena_chunk_alloc_internal_hard(arena, &chunk_hooks, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 643 | zero, commit); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 644 | } |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 645 | |
Jason Evans | 4581b97 | 2014-11-27 17:22:36 -0200 | [diff] [blame] | 646 | if (config_stats && chunk != NULL) { |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 647 | arena->stats.mapped += chunksize; |
Jason Evans | 4581b97 | 2014-11-27 17:22:36 -0200 | [diff] [blame] | 648 | arena->stats.metadata_mapped += (map_bias << LG_PAGE); |
| 649 | } |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 650 | |
| 651 | return (chunk); |
| 652 | } |
| 653 | |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 654 | static arena_chunk_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 655 | arena_chunk_init_hard(arena_t *arena) |
| 656 | { |
| 657 | arena_chunk_t *chunk; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 658 | bool zero, commit; |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 659 | size_t flag_unzeroed, flag_decommitted, i; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 660 | |
| 661 | assert(arena->spare == NULL); |
| 662 | |
| 663 | zero = false; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 664 | commit = false; |
| 665 | chunk = arena_chunk_alloc_internal(arena, &zero, &commit); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 666 | if (chunk == NULL) |
| 667 | return (NULL); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 668 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 669 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 670 | * Initialize the map to contain one maximal free untouched run. Mark |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 671 | * the pages as zeroed if chunk_alloc() returned a zeroed or decommitted |
| 672 | * chunk. |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 673 | */ |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 674 | flag_unzeroed = (zero || !commit) ? 0 : CHUNK_MAP_UNZEROED; |
| 675 | flag_decommitted = commit ? 0 : CHUNK_MAP_DECOMMITTED; |
| 676 | arena_mapbits_unallocated_set(chunk, map_bias, arena_maxrun, |
| 677 | flag_unzeroed | flag_decommitted); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 678 | /* |
| 679 | * There is no need to initialize the internal page map entries unless |
| 680 | * the chunk is not zeroed. |
| 681 | */ |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 682 | if (!zero) { |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 683 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED( |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 684 | (void *)arena_bitselm_get_const(chunk, map_bias+1), |
| 685 | (size_t)((uintptr_t)arena_bitselm_get_const(chunk, |
| 686 | chunk_npages-1) - |
| 687 | (uintptr_t)arena_bitselm_get_const(chunk, map_bias+1))); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 688 | for (i = map_bias+1; i < chunk_npages-1; i++) |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 689 | arena_mapbits_internal_set(chunk, i, flag_unzeroed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 690 | } else { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 691 | JEMALLOC_VALGRIND_MAKE_MEM_DEFINED((void |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 692 | *)arena_bitselm_get_const(chunk, map_bias+1), |
| 693 | (size_t)((uintptr_t)arena_bitselm_get_const(chunk, |
| 694 | chunk_npages-1) - |
| 695 | (uintptr_t)arena_bitselm_get_const(chunk, map_bias+1))); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 696 | if (config_debug) { |
| 697 | for (i = map_bias+1; i < chunk_npages-1; i++) { |
| 698 | assert(arena_mapbits_unzeroed_get(chunk, i) == |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 699 | flag_unzeroed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 700 | } |
| 701 | } |
| 702 | } |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 703 | arena_mapbits_unallocated_set(chunk, chunk_npages-1, arena_maxrun, |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 704 | flag_unzeroed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 705 | |
| 706 | return (chunk); |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 707 | } |
| 708 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 709 | static arena_chunk_t * |
| 710 | arena_chunk_alloc(arena_t *arena) |
| 711 | { |
| 712 | arena_chunk_t *chunk; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 713 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 714 | if (arena->spare != NULL) |
| 715 | chunk = arena_chunk_init_spare(arena); |
Chris Pride | 20a8c78 | 2014-03-25 22:36:05 -0700 | [diff] [blame] | 716 | else { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 717 | chunk = arena_chunk_init_hard(arena); |
Chris Pride | 20a8c78 | 2014-03-25 22:36:05 -0700 | [diff] [blame] | 718 | if (chunk == NULL) |
| 719 | return (NULL); |
| 720 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 721 | |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 722 | arena_avail_insert(arena, chunk, map_bias, chunk_npages-map_bias); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 723 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 724 | return (chunk); |
| 725 | } |
| 726 | |
| 727 | static void |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 728 | arena_chunk_dalloc(arena_t *arena, arena_chunk_t *chunk) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 729 | { |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 730 | |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 731 | assert(arena_mapbits_allocated_get(chunk, map_bias) == 0); |
| 732 | assert(arena_mapbits_allocated_get(chunk, chunk_npages-1) == 0); |
| 733 | assert(arena_mapbits_unallocated_size_get(chunk, map_bias) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 734 | arena_maxrun); |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 735 | assert(arena_mapbits_unallocated_size_get(chunk, chunk_npages-1) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 736 | arena_maxrun); |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 737 | assert(arena_mapbits_dirty_get(chunk, map_bias) == |
| 738 | arena_mapbits_dirty_get(chunk, chunk_npages-1)); |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 739 | assert(arena_mapbits_decommitted_get(chunk, map_bias) == |
| 740 | arena_mapbits_decommitted_get(chunk, chunk_npages-1)); |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 741 | |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 742 | /* Remove run from runs_avail, so that the arena does not use it. */ |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 743 | arena_avail_remove(arena, chunk, map_bias, chunk_npages-map_bias); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 744 | |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 745 | if (arena->spare != NULL) { |
| 746 | arena_chunk_t *spare = arena->spare; |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 747 | chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER; |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 748 | bool committed; |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 749 | |
| 750 | arena->spare = chunk; |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 751 | if (arena_mapbits_dirty_get(spare, map_bias) != 0) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 752 | arena_run_dirty_remove(arena, spare, map_bias, |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 753 | chunk_npages-map_bias); |
| 754 | } |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 755 | |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 756 | chunk_deregister(spare, &spare->node); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 757 | |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 758 | committed = (arena_mapbits_decommitted_get(spare, map_bias) == |
| 759 | 0); |
| 760 | if (!committed) { |
| 761 | /* |
| 762 | * Decommit the header. Mark the chunk as decommitted |
| 763 | * even if header decommit fails, since treating a |
| 764 | * partially committed chunk as committed has a high |
| 765 | * potential for causing later access of decommitted |
| 766 | * memory. |
| 767 | */ |
| 768 | chunk_hooks = chunk_hooks_get(arena); |
| 769 | chunk_hooks.decommit(spare, chunksize, 0, map_bias << |
| 770 | LG_PAGE, arena->ind); |
| 771 | } |
| 772 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 773 | chunk_dalloc_cache(arena, &chunk_hooks, (void *)spare, |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 774 | chunksize, committed); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 775 | |
Jason Evans | 4581b97 | 2014-11-27 17:22:36 -0200 | [diff] [blame] | 776 | if (config_stats) { |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 777 | arena->stats.mapped -= chunksize; |
Jason Evans | 4581b97 | 2014-11-27 17:22:36 -0200 | [diff] [blame] | 778 | arena->stats.metadata_mapped -= (map_bias << LG_PAGE); |
| 779 | } |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 780 | } else |
| 781 | arena->spare = chunk; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 782 | } |
| 783 | |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 784 | static void |
| 785 | arena_huge_malloc_stats_update(arena_t *arena, size_t usize) |
| 786 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 787 | szind_t index = size2index(usize) - nlclasses - NBINS; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 788 | |
| 789 | cassert(config_stats); |
| 790 | |
| 791 | arena->stats.nmalloc_huge++; |
| 792 | arena->stats.allocated_huge += usize; |
| 793 | arena->stats.hstats[index].nmalloc++; |
| 794 | arena->stats.hstats[index].curhchunks++; |
| 795 | } |
| 796 | |
| 797 | static void |
| 798 | arena_huge_malloc_stats_update_undo(arena_t *arena, size_t usize) |
| 799 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 800 | szind_t index = size2index(usize) - nlclasses - NBINS; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 801 | |
| 802 | cassert(config_stats); |
| 803 | |
| 804 | arena->stats.nmalloc_huge--; |
| 805 | arena->stats.allocated_huge -= usize; |
| 806 | arena->stats.hstats[index].nmalloc--; |
| 807 | arena->stats.hstats[index].curhchunks--; |
| 808 | } |
| 809 | |
| 810 | static void |
| 811 | arena_huge_dalloc_stats_update(arena_t *arena, size_t usize) |
| 812 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 813 | szind_t index = size2index(usize) - nlclasses - NBINS; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 814 | |
| 815 | cassert(config_stats); |
| 816 | |
| 817 | arena->stats.ndalloc_huge++; |
| 818 | arena->stats.allocated_huge -= usize; |
| 819 | arena->stats.hstats[index].ndalloc++; |
| 820 | arena->stats.hstats[index].curhchunks--; |
| 821 | } |
| 822 | |
| 823 | static void |
| 824 | arena_huge_dalloc_stats_update_undo(arena_t *arena, size_t usize) |
| 825 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 826 | szind_t index = size2index(usize) - nlclasses - NBINS; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 827 | |
| 828 | cassert(config_stats); |
| 829 | |
| 830 | arena->stats.ndalloc_huge--; |
| 831 | arena->stats.allocated_huge += usize; |
| 832 | arena->stats.hstats[index].ndalloc--; |
| 833 | arena->stats.hstats[index].curhchunks++; |
| 834 | } |
| 835 | |
| 836 | static void |
| 837 | arena_huge_ralloc_stats_update(arena_t *arena, size_t oldsize, size_t usize) |
| 838 | { |
| 839 | |
| 840 | arena_huge_dalloc_stats_update(arena, oldsize); |
| 841 | arena_huge_malloc_stats_update(arena, usize); |
| 842 | } |
| 843 | |
| 844 | static void |
| 845 | arena_huge_ralloc_stats_update_undo(arena_t *arena, size_t oldsize, |
| 846 | size_t usize) |
| 847 | { |
| 848 | |
| 849 | arena_huge_dalloc_stats_update_undo(arena, oldsize); |
| 850 | arena_huge_malloc_stats_update_undo(arena, usize); |
| 851 | } |
| 852 | |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 853 | extent_node_t * |
| 854 | arena_node_alloc(arena_t *arena) |
| 855 | { |
| 856 | extent_node_t *node; |
| 857 | |
| 858 | malloc_mutex_lock(&arena->node_cache_mtx); |
Jason Evans | 2195ba4 | 2015-02-15 16:43:52 -0800 | [diff] [blame] | 859 | node = ql_last(&arena->node_cache, ql_link); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 860 | if (node == NULL) { |
| 861 | malloc_mutex_unlock(&arena->node_cache_mtx); |
| 862 | return (base_alloc(sizeof(extent_node_t))); |
| 863 | } |
Jason Evans | 2195ba4 | 2015-02-15 16:43:52 -0800 | [diff] [blame] | 864 | ql_tail_remove(&arena->node_cache, extent_node_t, ql_link); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 865 | malloc_mutex_unlock(&arena->node_cache_mtx); |
| 866 | return (node); |
| 867 | } |
| 868 | |
| 869 | void |
| 870 | arena_node_dalloc(arena_t *arena, extent_node_t *node) |
| 871 | { |
| 872 | |
| 873 | malloc_mutex_lock(&arena->node_cache_mtx); |
Jason Evans | 2195ba4 | 2015-02-15 16:43:52 -0800 | [diff] [blame] | 874 | ql_elm_new(node, ql_link); |
| 875 | ql_tail_insert(&arena->node_cache, node, ql_link); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 876 | malloc_mutex_unlock(&arena->node_cache_mtx); |
| 877 | } |
| 878 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 879 | static void * |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 880 | arena_chunk_alloc_huge_hard(arena_t *arena, chunk_hooks_t *chunk_hooks, |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 881 | size_t usize, size_t alignment, bool *zero, size_t csize) |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 882 | { |
| 883 | void *ret; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 884 | bool commit = true; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 885 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 886 | ret = chunk_alloc_wrapper(arena, chunk_hooks, NULL, csize, alignment, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 887 | zero, &commit); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 888 | if (ret == NULL) { |
| 889 | /* Revert optimistic stats updates. */ |
| 890 | malloc_mutex_lock(&arena->lock); |
| 891 | if (config_stats) { |
| 892 | arena_huge_malloc_stats_update_undo(arena, usize); |
| 893 | arena->stats.mapped -= usize; |
| 894 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 895 | arena_nactive_sub(arena, usize >> LG_PAGE); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 896 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 897 | } |
| 898 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 899 | return (ret); |
| 900 | } |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 901 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 902 | void * |
| 903 | arena_chunk_alloc_huge(arena_t *arena, size_t usize, size_t alignment, |
| 904 | bool *zero) |
| 905 | { |
| 906 | void *ret; |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 907 | chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER; |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 908 | size_t csize = CHUNK_CEILING(usize); |
| 909 | |
| 910 | malloc_mutex_lock(&arena->lock); |
| 911 | |
| 912 | /* Optimistically update stats. */ |
| 913 | if (config_stats) { |
| 914 | arena_huge_malloc_stats_update(arena, usize); |
| 915 | arena->stats.mapped += usize; |
| 916 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 917 | arena_nactive_add(arena, usize >> LG_PAGE); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 918 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 919 | ret = chunk_alloc_cache(arena, &chunk_hooks, NULL, csize, alignment, |
| 920 | zero, true); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 921 | malloc_mutex_unlock(&arena->lock); |
| 922 | if (ret == NULL) { |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 923 | ret = arena_chunk_alloc_huge_hard(arena, &chunk_hooks, usize, |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 924 | alignment, zero, csize); |
| 925 | } |
| 926 | |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 927 | return (ret); |
| 928 | } |
| 929 | |
| 930 | void |
| 931 | arena_chunk_dalloc_huge(arena_t *arena, void *chunk, size_t usize) |
| 932 | { |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 933 | chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER; |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 934 | size_t csize; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 935 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 936 | csize = CHUNK_CEILING(usize); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 937 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 938 | if (config_stats) { |
| 939 | arena_huge_dalloc_stats_update(arena, usize); |
| 940 | arena->stats.mapped -= usize; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 941 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 942 | arena_nactive_sub(arena, usize >> LG_PAGE); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 943 | |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 944 | chunk_dalloc_cache(arena, &chunk_hooks, chunk, csize, true); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 945 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | void |
| 949 | arena_chunk_ralloc_huge_similar(arena_t *arena, void *chunk, size_t oldsize, |
| 950 | size_t usize) |
| 951 | { |
| 952 | |
| 953 | assert(CHUNK_CEILING(oldsize) == CHUNK_CEILING(usize)); |
| 954 | assert(oldsize != usize); |
| 955 | |
| 956 | malloc_mutex_lock(&arena->lock); |
| 957 | if (config_stats) |
| 958 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 959 | if (oldsize < usize) |
| 960 | arena_nactive_add(arena, (usize - oldsize) >> LG_PAGE); |
| 961 | else |
| 962 | arena_nactive_sub(arena, (oldsize - usize) >> LG_PAGE); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 963 | malloc_mutex_unlock(&arena->lock); |
| 964 | } |
| 965 | |
| 966 | void |
| 967 | arena_chunk_ralloc_huge_shrink(arena_t *arena, void *chunk, size_t oldsize, |
| 968 | size_t usize) |
| 969 | { |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 970 | size_t udiff = oldsize - usize; |
| 971 | size_t cdiff = CHUNK_CEILING(oldsize) - CHUNK_CEILING(usize); |
| 972 | |
| 973 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 974 | if (config_stats) { |
| 975 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 976 | if (cdiff != 0) |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 977 | arena->stats.mapped -= cdiff; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 978 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 979 | arena_nactive_sub(arena, udiff >> LG_PAGE); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 980 | |
Jason Evans | 2012d5a | 2014-11-17 09:54:49 -0800 | [diff] [blame] | 981 | if (cdiff != 0) { |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 982 | chunk_hooks_t chunk_hooks = CHUNK_HOOKS_INITIALIZER; |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 983 | void *nchunk = (void *)((uintptr_t)chunk + |
| 984 | CHUNK_CEILING(usize)); |
| 985 | |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 986 | chunk_dalloc_cache(arena, &chunk_hooks, nchunk, cdiff, true); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 987 | } |
| 988 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 989 | } |
| 990 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 991 | static bool |
| 992 | arena_chunk_ralloc_huge_expand_hard(arena_t *arena, chunk_hooks_t *chunk_hooks, |
| 993 | void *chunk, size_t oldsize, size_t usize, bool *zero, void *nchunk, |
| 994 | size_t udiff, size_t cdiff) |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 995 | { |
| 996 | bool err; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 997 | bool commit = true; |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 998 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 999 | err = (chunk_alloc_wrapper(arena, chunk_hooks, nchunk, cdiff, chunksize, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1000 | zero, &commit) == NULL); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1001 | if (err) { |
| 1002 | /* Revert optimistic stats updates. */ |
| 1003 | malloc_mutex_lock(&arena->lock); |
| 1004 | if (config_stats) { |
| 1005 | arena_huge_ralloc_stats_update_undo(arena, oldsize, |
| 1006 | usize); |
| 1007 | arena->stats.mapped -= cdiff; |
| 1008 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 1009 | arena_nactive_sub(arena, udiff >> LG_PAGE); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1010 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1011 | } else if (chunk_hooks->merge(chunk, CHUNK_CEILING(oldsize), nchunk, |
| 1012 | cdiff, true, arena->ind)) { |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 1013 | chunk_dalloc_wrapper(arena, chunk_hooks, nchunk, cdiff, *zero, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1014 | true); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1015 | err = true; |
Jason Evans | 2012d5a | 2014-11-17 09:54:49 -0800 | [diff] [blame] | 1016 | } |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1017 | return (err); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1018 | } |
| 1019 | |
| 1020 | bool |
| 1021 | arena_chunk_ralloc_huge_expand(arena_t *arena, void *chunk, size_t oldsize, |
| 1022 | size_t usize, bool *zero) |
| 1023 | { |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1024 | bool err; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1025 | chunk_hooks_t chunk_hooks = chunk_hooks_get(arena); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1026 | void *nchunk = (void *)((uintptr_t)chunk + CHUNK_CEILING(oldsize)); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1027 | size_t udiff = usize - oldsize; |
| 1028 | size_t cdiff = CHUNK_CEILING(usize) - CHUNK_CEILING(oldsize); |
| 1029 | |
| 1030 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1031 | |
| 1032 | /* Optimistically update stats. */ |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1033 | if (config_stats) { |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1034 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
| 1035 | arena->stats.mapped += cdiff; |
| 1036 | } |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 1037 | arena_nactive_add(arena, udiff >> LG_PAGE); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1038 | |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 1039 | err = (chunk_alloc_cache(arena, &chunk_hooks, nchunk, cdiff, chunksize, |
| 1040 | zero, true) == NULL); |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1041 | malloc_mutex_unlock(&arena->lock); |
| 1042 | if (err) { |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1043 | err = arena_chunk_ralloc_huge_expand_hard(arena, &chunk_hooks, |
| 1044 | chunk, oldsize, usize, zero, nchunk, udiff, |
| 1045 | cdiff); |
| 1046 | } else if (chunk_hooks.merge(chunk, CHUNK_CEILING(oldsize), nchunk, |
| 1047 | cdiff, true, arena->ind)) { |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 1048 | chunk_dalloc_wrapper(arena, &chunk_hooks, nchunk, cdiff, *zero, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1049 | true); |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1050 | err = true; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1051 | } |
| 1052 | |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1053 | return (err); |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 1054 | } |
| 1055 | |
Jason Evans | aa28266 | 2015-07-15 16:02:21 -0700 | [diff] [blame] | 1056 | /* |
| 1057 | * Do first-best-fit run selection, i.e. select the lowest run that best fits. |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 1058 | * Run sizes are indexed, so not all candidate runs are necessarily exactly the |
| 1059 | * same size. |
Jason Evans | aa28266 | 2015-07-15 16:02:21 -0700 | [diff] [blame] | 1060 | */ |
Jason Evans | 97c04a9 | 2015-03-06 19:57:36 -0800 | [diff] [blame] | 1061 | static arena_run_t * |
Jason Evans | aa28266 | 2015-07-15 16:02:21 -0700 | [diff] [blame] | 1062 | arena_run_first_best_fit(arena_t *arena, size_t size) |
Jason Evans | 97c04a9 | 2015-03-06 19:57:36 -0800 | [diff] [blame] | 1063 | { |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 1064 | szind_t ind, i; |
| 1065 | |
| 1066 | ind = size2index(run_quantize_ceil(size)); |
Dave Watson | cd86c14 | 2016-02-24 11:02:49 -0800 | [diff] [blame] | 1067 | for (i = ind; i < runs_avail_nclasses + runs_avail_bias; i++) { |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 1068 | ph_node_t *node = ph_first(arena_runs_avail_get(arena, i)); |
| 1069 | if (node != NULL) { |
| 1070 | arena_chunk_map_misc_t *miscelm = |
| 1071 | arena_ph_to_miscelm(node); |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 1072 | return (&miscelm->run); |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 1073 | } |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 1074 | } |
| 1075 | |
| 1076 | return (NULL); |
Jason Evans | 97c04a9 | 2015-03-06 19:57:36 -0800 | [diff] [blame] | 1077 | } |
| 1078 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1079 | static arena_run_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1080 | arena_run_alloc_large_helper(arena_t *arena, size_t size, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1081 | { |
Jason Evans | aa28266 | 2015-07-15 16:02:21 -0700 | [diff] [blame] | 1082 | arena_run_t *run = arena_run_first_best_fit(arena, s2u(size)); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1083 | if (run != NULL) { |
| 1084 | if (arena_run_split_large(arena, run, size, zero)) |
| 1085 | run = NULL; |
| 1086 | } |
Jason Evans | 97c04a9 | 2015-03-06 19:57:36 -0800 | [diff] [blame] | 1087 | return (run); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 1088 | } |
| 1089 | |
| 1090 | static arena_run_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1091 | arena_run_alloc_large(arena_t *arena, size_t size, bool zero) |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 1092 | { |
| 1093 | arena_chunk_t *chunk; |
| 1094 | arena_run_t *run; |
| 1095 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1096 | assert(size <= arena_maxrun); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 1097 | assert(size == PAGE_CEILING(size)); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 1098 | |
| 1099 | /* Search the arena's chunks for the lowest best fit. */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1100 | run = arena_run_alloc_large_helper(arena, size, zero); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 1101 | if (run != NULL) |
| 1102 | return (run); |
| 1103 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1104 | /* |
| 1105 | * No usable runs. Create a new chunk from which to allocate the run. |
| 1106 | */ |
| 1107 | chunk = arena_chunk_alloc(arena); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1108 | if (chunk != NULL) { |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 1109 | run = &arena_miscelm_get_mutable(chunk, map_bias)->run; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1110 | if (arena_run_split_large(arena, run, size, zero)) |
| 1111 | run = NULL; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1112 | return (run); |
| 1113 | } |
| 1114 | |
| 1115 | /* |
| 1116 | * arena_chunk_alloc() failed, but another thread may have made |
| 1117 | * sufficient memory available while this one dropped arena->lock in |
| 1118 | * arena_chunk_alloc(), so search one more time. |
| 1119 | */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1120 | return (arena_run_alloc_large_helper(arena, size, zero)); |
| 1121 | } |
| 1122 | |
| 1123 | static arena_run_t * |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 1124 | arena_run_alloc_small_helper(arena_t *arena, size_t size, szind_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1125 | { |
Jason Evans | aa28266 | 2015-07-15 16:02:21 -0700 | [diff] [blame] | 1126 | arena_run_t *run = arena_run_first_best_fit(arena, size); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1127 | if (run != NULL) { |
| 1128 | if (arena_run_split_small(arena, run, size, binind)) |
| 1129 | run = NULL; |
| 1130 | } |
Jason Evans | 97c04a9 | 2015-03-06 19:57:36 -0800 | [diff] [blame] | 1131 | return (run); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | static arena_run_t * |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 1135 | arena_run_alloc_small(arena_t *arena, size_t size, szind_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1136 | { |
| 1137 | arena_chunk_t *chunk; |
| 1138 | arena_run_t *run; |
| 1139 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1140 | assert(size <= arena_maxrun); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 1141 | assert(size == PAGE_CEILING(size)); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1142 | assert(binind != BININD_INVALID); |
| 1143 | |
| 1144 | /* Search the arena's chunks for the lowest best fit. */ |
| 1145 | run = arena_run_alloc_small_helper(arena, size, binind); |
| 1146 | if (run != NULL) |
| 1147 | return (run); |
| 1148 | |
| 1149 | /* |
| 1150 | * No usable runs. Create a new chunk from which to allocate the run. |
| 1151 | */ |
| 1152 | chunk = arena_chunk_alloc(arena); |
| 1153 | if (chunk != NULL) { |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 1154 | run = &arena_miscelm_get_mutable(chunk, map_bias)->run; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1155 | if (arena_run_split_small(arena, run, size, binind)) |
| 1156 | run = NULL; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1157 | return (run); |
| 1158 | } |
| 1159 | |
| 1160 | /* |
| 1161 | * arena_chunk_alloc() failed, but another thread may have made |
| 1162 | * sufficient memory available while this one dropped arena->lock in |
| 1163 | * arena_chunk_alloc(), so search one more time. |
| 1164 | */ |
| 1165 | return (arena_run_alloc_small_helper(arena, size, binind)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1166 | } |
| 1167 | |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 1168 | static bool |
| 1169 | arena_lg_dirty_mult_valid(ssize_t lg_dirty_mult) |
| 1170 | { |
| 1171 | |
Jason Evans | bd16ea4 | 2015-03-24 15:59:28 -0700 | [diff] [blame] | 1172 | return (lg_dirty_mult >= -1 && lg_dirty_mult < (ssize_t)(sizeof(size_t) |
| 1173 | << 3)); |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 1174 | } |
| 1175 | |
| 1176 | ssize_t |
| 1177 | arena_lg_dirty_mult_get(arena_t *arena) |
| 1178 | { |
| 1179 | ssize_t lg_dirty_mult; |
| 1180 | |
| 1181 | malloc_mutex_lock(&arena->lock); |
| 1182 | lg_dirty_mult = arena->lg_dirty_mult; |
| 1183 | malloc_mutex_unlock(&arena->lock); |
| 1184 | |
| 1185 | return (lg_dirty_mult); |
| 1186 | } |
| 1187 | |
| 1188 | bool |
| 1189 | arena_lg_dirty_mult_set(arena_t *arena, ssize_t lg_dirty_mult) |
| 1190 | { |
| 1191 | |
| 1192 | if (!arena_lg_dirty_mult_valid(lg_dirty_mult)) |
| 1193 | return (true); |
| 1194 | |
| 1195 | malloc_mutex_lock(&arena->lock); |
| 1196 | arena->lg_dirty_mult = lg_dirty_mult; |
| 1197 | arena_maybe_purge(arena); |
| 1198 | malloc_mutex_unlock(&arena->lock); |
| 1199 | |
| 1200 | return (false); |
| 1201 | } |
| 1202 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1203 | static void |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1204 | arena_decay_deadline_init(arena_t *arena) |
| 1205 | { |
| 1206 | |
| 1207 | assert(opt_purge == purge_mode_decay); |
| 1208 | |
| 1209 | /* |
| 1210 | * Generate a new deadline that is uniformly random within the next |
| 1211 | * epoch after the current one. |
| 1212 | */ |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1213 | nstime_copy(&arena->decay_deadline, &arena->decay_epoch); |
| 1214 | nstime_add(&arena->decay_deadline, &arena->decay_interval); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1215 | if (arena->decay_time > 0) { |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1216 | nstime_t jitter; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1217 | |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1218 | nstime_init(&jitter, prng_range(&arena->decay_jitter_state, |
| 1219 | nstime_ns(&arena->decay_interval))); |
| 1220 | nstime_add(&arena->decay_deadline, &jitter); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | static bool |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1225 | arena_decay_deadline_reached(const arena_t *arena, const nstime_t *time) |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1226 | { |
| 1227 | |
| 1228 | assert(opt_purge == purge_mode_decay); |
| 1229 | |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1230 | return (nstime_compare(&arena->decay_deadline, time) <= 0); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1231 | } |
| 1232 | |
| 1233 | static size_t |
| 1234 | arena_decay_backlog_npages_limit(const arena_t *arena) |
| 1235 | { |
| 1236 | static const uint64_t h_steps[] = { |
| 1237 | #define STEP(step, h, x, y) \ |
| 1238 | h, |
| 1239 | SMOOTHSTEP |
| 1240 | #undef STEP |
| 1241 | }; |
| 1242 | uint64_t sum; |
| 1243 | size_t npages_limit_backlog; |
| 1244 | unsigned i; |
| 1245 | |
| 1246 | assert(opt_purge == purge_mode_decay); |
| 1247 | |
| 1248 | /* |
| 1249 | * For each element of decay_backlog, multiply by the corresponding |
| 1250 | * fixed-point smoothstep decay factor. Sum the products, then divide |
| 1251 | * to round down to the nearest whole number of pages. |
| 1252 | */ |
| 1253 | sum = 0; |
| 1254 | for (i = 0; i < SMOOTHSTEP_NSTEPS; i++) |
| 1255 | sum += arena->decay_backlog[i] * h_steps[i]; |
| 1256 | npages_limit_backlog = (sum >> SMOOTHSTEP_BFP); |
| 1257 | |
| 1258 | return (npages_limit_backlog); |
| 1259 | } |
| 1260 | |
| 1261 | static void |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1262 | arena_decay_epoch_advance(arena_t *arena, const nstime_t *time) |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1263 | { |
| 1264 | uint64_t nadvance; |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1265 | nstime_t delta; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1266 | size_t ndirty_delta; |
| 1267 | |
| 1268 | assert(opt_purge == purge_mode_decay); |
| 1269 | assert(arena_decay_deadline_reached(arena, time)); |
| 1270 | |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1271 | nstime_copy(&delta, time); |
| 1272 | nstime_subtract(&delta, &arena->decay_epoch); |
| 1273 | nadvance = nstime_divide(&delta, &arena->decay_interval); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1274 | assert(nadvance > 0); |
| 1275 | |
| 1276 | /* Add nadvance decay intervals to epoch. */ |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1277 | nstime_copy(&delta, &arena->decay_interval); |
| 1278 | nstime_imultiply(&delta, nadvance); |
| 1279 | nstime_add(&arena->decay_epoch, &delta); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1280 | |
| 1281 | /* Set a new deadline. */ |
| 1282 | arena_decay_deadline_init(arena); |
| 1283 | |
| 1284 | /* Update the backlog. */ |
| 1285 | if (nadvance >= SMOOTHSTEP_NSTEPS) { |
| 1286 | memset(arena->decay_backlog, 0, (SMOOTHSTEP_NSTEPS-1) * |
| 1287 | sizeof(size_t)); |
| 1288 | } else { |
| 1289 | memmove(arena->decay_backlog, &arena->decay_backlog[nadvance], |
| 1290 | (SMOOTHSTEP_NSTEPS - nadvance) * sizeof(size_t)); |
| 1291 | if (nadvance > 1) { |
| 1292 | memset(&arena->decay_backlog[SMOOTHSTEP_NSTEPS - |
| 1293 | nadvance], 0, (nadvance-1) * sizeof(size_t)); |
| 1294 | } |
| 1295 | } |
| 1296 | ndirty_delta = (arena->ndirty > arena->decay_ndirty) ? arena->ndirty - |
| 1297 | arena->decay_ndirty : 0; |
| 1298 | arena->decay_ndirty = arena->ndirty; |
| 1299 | arena->decay_backlog[SMOOTHSTEP_NSTEPS-1] = ndirty_delta; |
| 1300 | arena->decay_backlog_npages_limit = |
| 1301 | arena_decay_backlog_npages_limit(arena); |
| 1302 | } |
| 1303 | |
| 1304 | static size_t |
| 1305 | arena_decay_npages_limit(arena_t *arena) |
| 1306 | { |
| 1307 | size_t npages_limit; |
| 1308 | |
| 1309 | assert(opt_purge == purge_mode_decay); |
| 1310 | |
| 1311 | npages_limit = arena->decay_backlog_npages_limit; |
| 1312 | |
| 1313 | /* Add in any dirty pages created during the current epoch. */ |
| 1314 | if (arena->ndirty > arena->decay_ndirty) |
| 1315 | npages_limit += arena->ndirty - arena->decay_ndirty; |
| 1316 | |
| 1317 | return (npages_limit); |
| 1318 | } |
| 1319 | |
| 1320 | static void |
| 1321 | arena_decay_init(arena_t *arena, ssize_t decay_time) |
| 1322 | { |
| 1323 | |
| 1324 | arena->decay_time = decay_time; |
| 1325 | if (decay_time > 0) { |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1326 | nstime_init2(&arena->decay_interval, decay_time, 0); |
| 1327 | nstime_idivide(&arena->decay_interval, SMOOTHSTEP_NSTEPS); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1328 | } |
| 1329 | |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1330 | nstime_init(&arena->decay_epoch, 0); |
| 1331 | nstime_update(&arena->decay_epoch); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1332 | arena->decay_jitter_state = (uint64_t)(uintptr_t)arena; |
| 1333 | arena_decay_deadline_init(arena); |
| 1334 | arena->decay_ndirty = arena->ndirty; |
| 1335 | arena->decay_backlog_npages_limit = 0; |
| 1336 | memset(arena->decay_backlog, 0, SMOOTHSTEP_NSTEPS * sizeof(size_t)); |
| 1337 | } |
| 1338 | |
| 1339 | static bool |
| 1340 | arena_decay_time_valid(ssize_t decay_time) |
| 1341 | { |
| 1342 | |
Jason Evans | 022f689 | 2016-03-02 22:41:32 -0800 | [diff] [blame] | 1343 | if (decay_time < -1) |
| 1344 | return (false); |
| 1345 | if (decay_time == -1 || (uint64_t)decay_time <= NSTIME_SEC_MAX) |
| 1346 | return (true); |
| 1347 | return (false); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | ssize_t |
| 1351 | arena_decay_time_get(arena_t *arena) |
| 1352 | { |
| 1353 | ssize_t decay_time; |
| 1354 | |
| 1355 | malloc_mutex_lock(&arena->lock); |
| 1356 | decay_time = arena->decay_time; |
| 1357 | malloc_mutex_unlock(&arena->lock); |
| 1358 | |
| 1359 | return (decay_time); |
| 1360 | } |
| 1361 | |
| 1362 | bool |
| 1363 | arena_decay_time_set(arena_t *arena, ssize_t decay_time) |
| 1364 | { |
| 1365 | |
| 1366 | if (!arena_decay_time_valid(decay_time)) |
| 1367 | return (true); |
| 1368 | |
| 1369 | malloc_mutex_lock(&arena->lock); |
| 1370 | /* |
| 1371 | * Restart decay backlog from scratch, which may cause many dirty pages |
| 1372 | * to be immediately purged. It would conceptually be possible to map |
| 1373 | * the old backlog onto the new backlog, but there is no justification |
| 1374 | * for such complexity since decay_time changes are intended to be |
| 1375 | * infrequent, either between the {-1, 0, >0} states, or a one-time |
| 1376 | * arbitrary change during initial arena configuration. |
| 1377 | */ |
| 1378 | arena_decay_init(arena, decay_time); |
| 1379 | arena_maybe_purge(arena); |
| 1380 | malloc_mutex_unlock(&arena->lock); |
| 1381 | |
| 1382 | return (false); |
| 1383 | } |
| 1384 | |
| 1385 | static void |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1386 | arena_maybe_purge_ratio(arena_t *arena) |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 1387 | { |
| 1388 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1389 | assert(opt_purge == purge_mode_ratio); |
| 1390 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 1391 | /* Don't purge if the option is disabled. */ |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 1392 | if (arena->lg_dirty_mult < 0) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 1393 | return; |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1394 | |
Jason Evans | 0a9f9a4 | 2015-06-22 18:50:32 -0700 | [diff] [blame] | 1395 | /* |
| 1396 | * Iterate, since preventing recursive purging could otherwise leave too |
| 1397 | * many dirty pages. |
| 1398 | */ |
| 1399 | while (true) { |
| 1400 | size_t threshold = (arena->nactive >> arena->lg_dirty_mult); |
| 1401 | if (threshold < chunk_npages) |
| 1402 | threshold = chunk_npages; |
| 1403 | /* |
| 1404 | * Don't purge unless the number of purgeable pages exceeds the |
| 1405 | * threshold. |
| 1406 | */ |
| 1407 | if (arena->ndirty <= threshold) |
| 1408 | return; |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1409 | arena_purge_to_limit(arena, threshold); |
Jason Evans | 0a9f9a4 | 2015-06-22 18:50:32 -0700 | [diff] [blame] | 1410 | } |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 1411 | } |
| 1412 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1413 | static void |
| 1414 | arena_maybe_purge_decay(arena_t *arena) |
| 1415 | { |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1416 | nstime_t time; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1417 | size_t ndirty_limit; |
| 1418 | |
| 1419 | assert(opt_purge == purge_mode_decay); |
| 1420 | |
| 1421 | /* Purge all or nothing if the option is disabled. */ |
| 1422 | if (arena->decay_time <= 0) { |
| 1423 | if (arena->decay_time == 0) |
| 1424 | arena_purge_to_limit(arena, 0); |
| 1425 | return; |
| 1426 | } |
| 1427 | |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1428 | nstime_copy(&time, &arena->decay_epoch); |
| 1429 | if (unlikely(nstime_update(&time))) { |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1430 | /* Time went backwards. Force an epoch advance. */ |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1431 | nstime_copy(&time, &arena->decay_deadline); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1432 | } |
| 1433 | |
| 1434 | if (arena_decay_deadline_reached(arena, &time)) |
| 1435 | arena_decay_epoch_advance(arena, &time); |
| 1436 | |
| 1437 | ndirty_limit = arena_decay_npages_limit(arena); |
| 1438 | |
| 1439 | /* |
| 1440 | * Don't try to purge unless the number of purgeable pages exceeds the |
| 1441 | * current limit. |
| 1442 | */ |
| 1443 | if (arena->ndirty <= ndirty_limit) |
| 1444 | return; |
| 1445 | arena_purge_to_limit(arena, ndirty_limit); |
| 1446 | } |
| 1447 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1448 | void |
| 1449 | arena_maybe_purge(arena_t *arena) |
| 1450 | { |
| 1451 | |
| 1452 | /* Don't recursively purge. */ |
| 1453 | if (arena->purging) |
| 1454 | return; |
| 1455 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1456 | if (opt_purge == purge_mode_ratio) |
| 1457 | arena_maybe_purge_ratio(arena); |
| 1458 | else |
| 1459 | arena_maybe_purge_decay(arena); |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1460 | } |
| 1461 | |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 1462 | static size_t |
| 1463 | arena_dirty_count(arena_t *arena) |
| 1464 | { |
| 1465 | size_t ndirty = 0; |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1466 | arena_runs_dirty_link_t *rdelm; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1467 | extent_node_t *chunkselm; |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 1468 | |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1469 | for (rdelm = qr_next(&arena->runs_dirty, rd_link), |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1470 | chunkselm = qr_next(&arena->chunks_cache, cc_link); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1471 | rdelm != &arena->runs_dirty; rdelm = qr_next(rdelm, rd_link)) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1472 | size_t npages; |
| 1473 | |
Jason Evans | f5c8f37 | 2015-03-10 18:29:49 -0700 | [diff] [blame] | 1474 | if (rdelm == &chunkselm->rd) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1475 | npages = extent_node_size_get(chunkselm) >> LG_PAGE; |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1476 | chunkselm = qr_next(chunkselm, cc_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1477 | } else { |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1478 | arena_chunk_t *chunk = (arena_chunk_t *)CHUNK_ADDR2BASE( |
| 1479 | rdelm); |
| 1480 | arena_chunk_map_misc_t *miscelm = |
| 1481 | arena_rd_to_miscelm(rdelm); |
| 1482 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1483 | assert(arena_mapbits_allocated_get(chunk, pageind) == |
| 1484 | 0); |
| 1485 | assert(arena_mapbits_large_get(chunk, pageind) == 0); |
| 1486 | assert(arena_mapbits_dirty_get(chunk, pageind) != 0); |
| 1487 | npages = arena_mapbits_unallocated_size_get(chunk, |
| 1488 | pageind) >> LG_PAGE; |
| 1489 | } |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 1490 | ndirty += npages; |
| 1491 | } |
| 1492 | |
Jason Evans | 2b2f6dc | 2014-11-01 02:29:10 -0700 | [diff] [blame] | 1493 | return (ndirty); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1494 | } |
| 1495 | |
| 1496 | static size_t |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1497 | arena_stash_dirty(arena_t *arena, chunk_hooks_t *chunk_hooks, |
| 1498 | size_t ndirty_limit, arena_runs_dirty_link_t *purge_runs_sentinel, |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1499 | extent_node_t *purge_chunks_sentinel) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1500 | { |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1501 | arena_runs_dirty_link_t *rdelm, *rdelm_next; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1502 | extent_node_t *chunkselm; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1503 | size_t nstashed = 0; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1504 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1505 | /* Stash runs/chunks according to ndirty_limit. */ |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1506 | for (rdelm = qr_next(&arena->runs_dirty, rd_link), |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1507 | chunkselm = qr_next(&arena->chunks_cache, cc_link); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1508 | rdelm != &arena->runs_dirty; rdelm = rdelm_next) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1509 | size_t npages; |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1510 | rdelm_next = qr_next(rdelm, rd_link); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1511 | |
Jason Evans | f5c8f37 | 2015-03-10 18:29:49 -0700 | [diff] [blame] | 1512 | if (rdelm == &chunkselm->rd) { |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1513 | extent_node_t *chunkselm_next; |
| 1514 | bool zero; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1515 | UNUSED void *chunk; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1516 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1517 | npages = extent_node_size_get(chunkselm) >> LG_PAGE; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1518 | if (opt_purge == purge_mode_decay && arena->ndirty - |
| 1519 | (nstashed + npages) < ndirty_limit) |
| 1520 | break; |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1521 | |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1522 | chunkselm_next = qr_next(chunkselm, cc_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1523 | /* |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1524 | * Allocate. chunkselm remains valid due to the |
| 1525 | * dalloc_node=false argument to chunk_alloc_cache(). |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1526 | */ |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1527 | zero = false; |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1528 | chunk = chunk_alloc_cache(arena, chunk_hooks, |
Jason Evans | 99bd94f | 2015-02-18 16:40:53 -0800 | [diff] [blame] | 1529 | extent_node_addr_get(chunkselm), |
| 1530 | extent_node_size_get(chunkselm), chunksize, &zero, |
| 1531 | false); |
| 1532 | assert(chunk == extent_node_addr_get(chunkselm)); |
| 1533 | assert(zero == extent_node_zeroed_get(chunkselm)); |
| 1534 | extent_node_dirty_insert(chunkselm, purge_runs_sentinel, |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1535 | purge_chunks_sentinel); |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1536 | assert(npages == (extent_node_size_get(chunkselm) >> |
| 1537 | LG_PAGE)); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1538 | chunkselm = chunkselm_next; |
| 1539 | } else { |
| 1540 | arena_chunk_t *chunk = |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1541 | (arena_chunk_t *)CHUNK_ADDR2BASE(rdelm); |
| 1542 | arena_chunk_map_misc_t *miscelm = |
| 1543 | arena_rd_to_miscelm(rdelm); |
| 1544 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
| 1545 | arena_run_t *run = &miscelm->run; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1546 | size_t run_size = |
| 1547 | arena_mapbits_unallocated_size_get(chunk, pageind); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1548 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1549 | npages = run_size >> LG_PAGE; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1550 | if (opt_purge == purge_mode_decay && arena->ndirty - |
| 1551 | (nstashed + npages) < ndirty_limit) |
| 1552 | break; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1553 | |
| 1554 | assert(pageind + npages <= chunk_npages); |
| 1555 | assert(arena_mapbits_dirty_get(chunk, pageind) == |
| 1556 | arena_mapbits_dirty_get(chunk, pageind+npages-1)); |
| 1557 | |
| 1558 | /* |
| 1559 | * If purging the spare chunk's run, make it available |
| 1560 | * prior to allocation. |
| 1561 | */ |
| 1562 | if (chunk == arena->spare) |
| 1563 | arena_chunk_alloc(arena); |
| 1564 | |
| 1565 | /* Temporarily allocate the free dirty run. */ |
| 1566 | arena_run_split_large(arena, run, run_size, false); |
Jason Evans | 339c2b2 | 2015-02-17 22:25:56 -0800 | [diff] [blame] | 1567 | /* Stash. */ |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1568 | if (false) |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1569 | qr_new(rdelm, rd_link); /* Redundant. */ |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1570 | else { |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1571 | assert(qr_next(rdelm, rd_link) == rdelm); |
| 1572 | assert(qr_prev(rdelm, rd_link) == rdelm); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1573 | } |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1574 | qr_meld(purge_runs_sentinel, rdelm, rd_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1575 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1576 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1577 | nstashed += npages; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1578 | if (opt_purge == purge_mode_ratio && arena->ndirty - nstashed <= |
| 1579 | ndirty_limit) |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1580 | break; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1581 | } |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1582 | |
| 1583 | return (nstashed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1584 | } |
| 1585 | |
| 1586 | static size_t |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1587 | arena_purge_stashed(arena_t *arena, chunk_hooks_t *chunk_hooks, |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1588 | arena_runs_dirty_link_t *purge_runs_sentinel, |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1589 | extent_node_t *purge_chunks_sentinel) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1590 | { |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1591 | size_t npurged, nmadvise; |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1592 | arena_runs_dirty_link_t *rdelm; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1593 | extent_node_t *chunkselm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1594 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1595 | if (config_stats) |
| 1596 | nmadvise = 0; |
| 1597 | npurged = 0; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1598 | |
| 1599 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1600 | for (rdelm = qr_next(purge_runs_sentinel, rd_link), |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1601 | chunkselm = qr_next(purge_chunks_sentinel, cc_link); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1602 | rdelm != purge_runs_sentinel; rdelm = qr_next(rdelm, rd_link)) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1603 | size_t npages; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1604 | |
Jason Evans | f5c8f37 | 2015-03-10 18:29:49 -0700 | [diff] [blame] | 1605 | if (rdelm == &chunkselm->rd) { |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1606 | /* |
| 1607 | * Don't actually purge the chunk here because 1) |
| 1608 | * chunkselm is embedded in the chunk and must remain |
| 1609 | * valid, and 2) we deallocate the chunk in |
| 1610 | * arena_unstash_purged(), where it is destroyed, |
| 1611 | * decommitted, or purged, depending on chunk |
| 1612 | * deallocation policy. |
| 1613 | */ |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1614 | size_t size = extent_node_size_get(chunkselm); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1615 | npages = size >> LG_PAGE; |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1616 | chunkselm = qr_next(chunkselm, cc_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1617 | } else { |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1618 | size_t pageind, run_size, flag_unzeroed, flags, i; |
| 1619 | bool decommitted; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1620 | arena_chunk_t *chunk = |
| 1621 | (arena_chunk_t *)CHUNK_ADDR2BASE(rdelm); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1622 | arena_chunk_map_misc_t *miscelm = |
| 1623 | arena_rd_to_miscelm(rdelm); |
| 1624 | pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1625 | run_size = arena_mapbits_large_size_get(chunk, pageind); |
| 1626 | npages = run_size >> LG_PAGE; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1627 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1628 | assert(pageind + npages <= chunk_npages); |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 1629 | assert(!arena_mapbits_decommitted_get(chunk, pageind)); |
| 1630 | assert(!arena_mapbits_decommitted_get(chunk, |
| 1631 | pageind+npages-1)); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1632 | decommitted = !chunk_hooks->decommit(chunk, chunksize, |
| 1633 | pageind << LG_PAGE, npages << LG_PAGE, arena->ind); |
| 1634 | if (decommitted) { |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1635 | flag_unzeroed = 0; |
| 1636 | flags = CHUNK_MAP_DECOMMITTED; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1637 | } else { |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1638 | flag_unzeroed = chunk_purge_wrapper(arena, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1639 | chunk_hooks, chunk, chunksize, pageind << |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1640 | LG_PAGE, run_size) ? CHUNK_MAP_UNZEROED : 0; |
| 1641 | flags = flag_unzeroed; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1642 | } |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1643 | arena_mapbits_large_set(chunk, pageind+npages-1, 0, |
| 1644 | flags); |
| 1645 | arena_mapbits_large_set(chunk, pageind, run_size, |
| 1646 | flags); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1647 | |
| 1648 | /* |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1649 | * Set the unzeroed flag for internal pages, now that |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 1650 | * chunk_purge_wrapper() has returned whether the pages |
| 1651 | * were zeroed as a side effect of purging. This chunk |
| 1652 | * map modification is safe even though the arena mutex |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1653 | * isn't currently owned by this thread, because the run |
| 1654 | * is marked as allocated, thus protecting it from being |
| 1655 | * modified by any other thread. As long as these |
| 1656 | * writes don't perturb the first and last elements' |
| 1657 | * CHUNK_MAP_ALLOCATED bits, behavior is well defined. |
| 1658 | */ |
Jason Evans | 45186f0 | 2015-08-10 23:03:34 -0700 | [diff] [blame] | 1659 | for (i = 1; i < npages-1; i++) { |
| 1660 | arena_mapbits_internal_set(chunk, pageind+i, |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1661 | flag_unzeroed); |
| 1662 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1663 | } |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1664 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1665 | npurged += npages; |
| 1666 | if (config_stats) |
| 1667 | nmadvise++; |
| 1668 | } |
| 1669 | malloc_mutex_lock(&arena->lock); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1670 | |
| 1671 | if (config_stats) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1672 | arena->stats.nmadvise += nmadvise; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1673 | arena->stats.purged += npurged; |
| 1674 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1675 | |
| 1676 | return (npurged); |
| 1677 | } |
| 1678 | |
| 1679 | static void |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1680 | arena_unstash_purged(arena_t *arena, chunk_hooks_t *chunk_hooks, |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1681 | arena_runs_dirty_link_t *purge_runs_sentinel, |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1682 | extent_node_t *purge_chunks_sentinel) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1683 | { |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1684 | arena_runs_dirty_link_t *rdelm, *rdelm_next; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1685 | extent_node_t *chunkselm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1686 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 1687 | /* Deallocate chunks/runs. */ |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1688 | for (rdelm = qr_next(purge_runs_sentinel, rd_link), |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1689 | chunkselm = qr_next(purge_chunks_sentinel, cc_link); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1690 | rdelm != purge_runs_sentinel; rdelm = rdelm_next) { |
| 1691 | rdelm_next = qr_next(rdelm, rd_link); |
Jason Evans | f5c8f37 | 2015-03-10 18:29:49 -0700 | [diff] [blame] | 1692 | if (rdelm == &chunkselm->rd) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1693 | extent_node_t *chunkselm_next = qr_next(chunkselm, |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1694 | cc_link); |
Jason Evans | 339c2b2 | 2015-02-17 22:25:56 -0800 | [diff] [blame] | 1695 | void *addr = extent_node_addr_get(chunkselm); |
| 1696 | size_t size = extent_node_size_get(chunkselm); |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1697 | bool zeroed = extent_node_zeroed_get(chunkselm); |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 1698 | bool committed = extent_node_committed_get(chunkselm); |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 1699 | extent_node_dirty_remove(chunkselm); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1700 | arena_node_dalloc(arena, chunkselm); |
| 1701 | chunkselm = chunkselm_next; |
Jason Evans | ce7c0f9 | 2016-03-30 18:36:04 -0700 | [diff] [blame^] | 1702 | chunk_dalloc_wrapper(arena, chunk_hooks, addr, size, |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 1703 | zeroed, committed); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1704 | } else { |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1705 | arena_chunk_t *chunk = |
| 1706 | (arena_chunk_t *)CHUNK_ADDR2BASE(rdelm); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1707 | arena_chunk_map_misc_t *miscelm = |
| 1708 | arena_rd_to_miscelm(rdelm); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1709 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
| 1710 | bool decommitted = (arena_mapbits_decommitted_get(chunk, |
| 1711 | pageind) != 0); |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1712 | arena_run_t *run = &miscelm->run; |
| 1713 | qr_remove(rdelm, rd_link); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1714 | arena_run_dalloc(arena, run, false, true, decommitted); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1715 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1716 | } |
| 1717 | } |
| 1718 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1719 | /* |
| 1720 | * NB: ndirty_limit is interpreted differently depending on opt_purge: |
| 1721 | * - purge_mode_ratio: Purge as few dirty run/chunks as possible to reach the |
| 1722 | * desired state: |
| 1723 | * (arena->ndirty <= ndirty_limit) |
| 1724 | * - purge_mode_decay: Purge as many dirty runs/chunks as possible without |
| 1725 | * violating the invariant: |
| 1726 | * (arena->ndirty >= ndirty_limit) |
| 1727 | */ |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 1728 | static void |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1729 | arena_purge_to_limit(arena_t *arena, size_t ndirty_limit) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1730 | { |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1731 | chunk_hooks_t chunk_hooks = chunk_hooks_get(arena); |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1732 | size_t npurge, npurged; |
Jason Evans | 38e42d3 | 2015-03-10 18:15:40 -0700 | [diff] [blame] | 1733 | arena_runs_dirty_link_t purge_runs_sentinel; |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1734 | extent_node_t purge_chunks_sentinel; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1735 | |
Jason Evans | 0a9f9a4 | 2015-06-22 18:50:32 -0700 | [diff] [blame] | 1736 | arena->purging = true; |
| 1737 | |
Jason Evans | 2b2f6dc | 2014-11-01 02:29:10 -0700 | [diff] [blame] | 1738 | /* |
| 1739 | * Calls to arena_dirty_count() are disabled even for debug builds |
| 1740 | * because overhead grows nonlinearly as memory usage increases. |
| 1741 | */ |
| 1742 | if (false && config_debug) { |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1743 | size_t ndirty = arena_dirty_count(arena); |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 1744 | assert(ndirty == arena->ndirty); |
Jason Evans | 2caa471 | 2010-03-04 21:35:07 -0800 | [diff] [blame] | 1745 | } |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1746 | assert(opt_purge != purge_mode_ratio || (arena->nactive >> |
| 1747 | arena->lg_dirty_mult) < arena->ndirty || ndirty_limit == 0); |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1748 | |
| 1749 | qr_new(&purge_runs_sentinel, rd_link); |
| 1750 | extent_node_dirty_linkage_init(&purge_chunks_sentinel); |
| 1751 | |
| 1752 | npurge = arena_stash_dirty(arena, &chunk_hooks, ndirty_limit, |
| 1753 | &purge_runs_sentinel, &purge_chunks_sentinel); |
| 1754 | if (npurge == 0) |
| 1755 | goto label_return; |
| 1756 | npurged = arena_purge_stashed(arena, &chunk_hooks, &purge_runs_sentinel, |
| 1757 | &purge_chunks_sentinel); |
| 1758 | assert(npurged == npurge); |
| 1759 | arena_unstash_purged(arena, &chunk_hooks, &purge_runs_sentinel, |
| 1760 | &purge_chunks_sentinel); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1761 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1762 | if (config_stats) |
| 1763 | arena->stats.npurge++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1764 | |
Jason Evans | 1a4ad3c | 2016-02-19 19:51:23 -0800 | [diff] [blame] | 1765 | label_return: |
Jason Evans | 0a9f9a4 | 2015-06-22 18:50:32 -0700 | [diff] [blame] | 1766 | arena->purging = false; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1767 | } |
| 1768 | |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 1769 | void |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1770 | arena_purge(arena_t *arena, bool all) |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 1771 | { |
| 1772 | |
| 1773 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 1774 | if (all) |
| 1775 | arena_purge_to_limit(arena, 0); |
| 1776 | else |
| 1777 | arena_maybe_purge(arena); |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 1778 | malloc_mutex_unlock(&arena->lock); |
| 1779 | } |
| 1780 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1781 | static void |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1782 | arena_run_coalesce(arena_t *arena, arena_chunk_t *chunk, size_t *p_size, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1783 | size_t *p_run_ind, size_t *p_run_pages, size_t flag_dirty, |
| 1784 | size_t flag_decommitted) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1785 | { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1786 | size_t size = *p_size; |
| 1787 | size_t run_ind = *p_run_ind; |
| 1788 | size_t run_pages = *p_run_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1789 | |
| 1790 | /* Try to coalesce forward. */ |
| 1791 | if (run_ind + run_pages < chunk_npages && |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1792 | arena_mapbits_allocated_get(chunk, run_ind+run_pages) == 0 && |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1793 | arena_mapbits_dirty_get(chunk, run_ind+run_pages) == flag_dirty && |
| 1794 | arena_mapbits_decommitted_get(chunk, run_ind+run_pages) == |
| 1795 | flag_decommitted) { |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1796 | size_t nrun_size = arena_mapbits_unallocated_size_get(chunk, |
| 1797 | run_ind+run_pages); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1798 | size_t nrun_pages = nrun_size >> LG_PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1799 | |
| 1800 | /* |
| 1801 | * Remove successor from runs_avail; the coalesced run is |
| 1802 | * inserted later. |
| 1803 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1804 | assert(arena_mapbits_unallocated_size_get(chunk, |
| 1805 | run_ind+run_pages+nrun_pages-1) == nrun_size); |
| 1806 | assert(arena_mapbits_dirty_get(chunk, |
| 1807 | run_ind+run_pages+nrun_pages-1) == flag_dirty); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1808 | assert(arena_mapbits_decommitted_get(chunk, |
| 1809 | run_ind+run_pages+nrun_pages-1) == flag_decommitted); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1810 | arena_avail_remove(arena, chunk, run_ind+run_pages, nrun_pages); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1811 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1812 | /* |
| 1813 | * If the successor is dirty, remove it from the set of dirty |
| 1814 | * pages. |
| 1815 | */ |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1816 | if (flag_dirty != 0) { |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1817 | arena_run_dirty_remove(arena, chunk, run_ind+run_pages, |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1818 | nrun_pages); |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1819 | } |
| 1820 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1821 | size += nrun_size; |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1822 | run_pages += nrun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1823 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1824 | arena_mapbits_unallocated_size_set(chunk, run_ind, size); |
| 1825 | arena_mapbits_unallocated_size_set(chunk, run_ind+run_pages-1, |
| 1826 | size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1827 | } |
| 1828 | |
| 1829 | /* Try to coalesce backward. */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1830 | if (run_ind > map_bias && arena_mapbits_allocated_get(chunk, |
| 1831 | run_ind-1) == 0 && arena_mapbits_dirty_get(chunk, run_ind-1) == |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1832 | flag_dirty && arena_mapbits_decommitted_get(chunk, run_ind-1) == |
| 1833 | flag_decommitted) { |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1834 | size_t prun_size = arena_mapbits_unallocated_size_get(chunk, |
| 1835 | run_ind-1); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1836 | size_t prun_pages = prun_size >> LG_PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1837 | |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1838 | run_ind -= prun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1839 | |
| 1840 | /* |
| 1841 | * Remove predecessor from runs_avail; the coalesced run is |
| 1842 | * inserted later. |
| 1843 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1844 | assert(arena_mapbits_unallocated_size_get(chunk, run_ind) == |
| 1845 | prun_size); |
| 1846 | assert(arena_mapbits_dirty_get(chunk, run_ind) == flag_dirty); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1847 | assert(arena_mapbits_decommitted_get(chunk, run_ind) == |
| 1848 | flag_decommitted); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1849 | arena_avail_remove(arena, chunk, run_ind, prun_pages); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1850 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1851 | /* |
| 1852 | * If the predecessor is dirty, remove it from the set of dirty |
| 1853 | * pages. |
| 1854 | */ |
| 1855 | if (flag_dirty != 0) { |
| 1856 | arena_run_dirty_remove(arena, chunk, run_ind, |
| 1857 | prun_pages); |
| 1858 | } |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1859 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1860 | size += prun_size; |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1861 | run_pages += prun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1862 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1863 | arena_mapbits_unallocated_size_set(chunk, run_ind, size); |
| 1864 | arena_mapbits_unallocated_size_set(chunk, run_ind+run_pages-1, |
| 1865 | size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1866 | } |
| 1867 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1868 | *p_size = size; |
| 1869 | *p_run_ind = run_ind; |
| 1870 | *p_run_pages = run_pages; |
| 1871 | } |
| 1872 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1873 | static size_t |
| 1874 | arena_run_size_get(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1875 | size_t run_ind) |
| 1876 | { |
| 1877 | size_t size; |
| 1878 | |
| 1879 | assert(run_ind >= map_bias); |
| 1880 | assert(run_ind < chunk_npages); |
| 1881 | |
| 1882 | if (arena_mapbits_large_get(chunk, run_ind) != 0) { |
| 1883 | size = arena_mapbits_large_size_get(chunk, run_ind); |
| 1884 | assert(size == PAGE || arena_mapbits_large_size_get(chunk, |
| 1885 | run_ind+(size>>LG_PAGE)-1) == 0); |
| 1886 | } else { |
| 1887 | arena_bin_info_t *bin_info = &arena_bin_info[run->binind]; |
| 1888 | size = bin_info->run_size; |
| 1889 | } |
| 1890 | |
| 1891 | return (size); |
| 1892 | } |
| 1893 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1894 | static void |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1895 | arena_run_dalloc(arena_t *arena, arena_run_t *run, bool dirty, bool cleaned, |
| 1896 | bool decommitted) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1897 | { |
| 1898 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1899 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1900 | size_t size, run_ind, run_pages, flag_dirty, flag_decommitted; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1901 | |
| 1902 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1903 | miscelm = arena_run_to_miscelm(run); |
| 1904 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1905 | assert(run_ind >= map_bias); |
| 1906 | assert(run_ind < chunk_npages); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1907 | size = arena_run_size_get(arena, chunk, run, run_ind); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1908 | run_pages = (size >> LG_PAGE); |
Jason Evans | 40ee9aa | 2016-02-27 12:34:50 -0800 | [diff] [blame] | 1909 | arena_nactive_sub(arena, run_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1910 | |
| 1911 | /* |
| 1912 | * The run is dirty if the caller claims to have dirtied it, as well as |
| 1913 | * if it was already dirty before being allocated and the caller |
| 1914 | * doesn't claim to have cleaned it. |
| 1915 | */ |
| 1916 | assert(arena_mapbits_dirty_get(chunk, run_ind) == |
| 1917 | arena_mapbits_dirty_get(chunk, run_ind+run_pages-1)); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1918 | if (!cleaned && !decommitted && arena_mapbits_dirty_get(chunk, run_ind) |
| 1919 | != 0) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1920 | dirty = true; |
| 1921 | flag_dirty = dirty ? CHUNK_MAP_DIRTY : 0; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1922 | flag_decommitted = decommitted ? CHUNK_MAP_DECOMMITTED : 0; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1923 | |
| 1924 | /* Mark pages as unallocated in the chunk map. */ |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1925 | if (dirty || decommitted) { |
| 1926 | size_t flags = flag_dirty | flag_decommitted; |
| 1927 | arena_mapbits_unallocated_set(chunk, run_ind, size, flags); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1928 | arena_mapbits_unallocated_set(chunk, run_ind+run_pages-1, size, |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1929 | flags); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1930 | } else { |
| 1931 | arena_mapbits_unallocated_set(chunk, run_ind, size, |
| 1932 | arena_mapbits_unzeroed_get(chunk, run_ind)); |
| 1933 | arena_mapbits_unallocated_set(chunk, run_ind+run_pages-1, size, |
| 1934 | arena_mapbits_unzeroed_get(chunk, run_ind+run_pages-1)); |
| 1935 | } |
| 1936 | |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1937 | arena_run_coalesce(arena, chunk, &size, &run_ind, &run_pages, |
| 1938 | flag_dirty, flag_decommitted); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1939 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1940 | /* Insert into runs_avail, now that coalescing is complete. */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1941 | assert(arena_mapbits_unallocated_size_get(chunk, run_ind) == |
| 1942 | arena_mapbits_unallocated_size_get(chunk, run_ind+run_pages-1)); |
| 1943 | assert(arena_mapbits_dirty_get(chunk, run_ind) == |
| 1944 | arena_mapbits_dirty_get(chunk, run_ind+run_pages-1)); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 1945 | assert(arena_mapbits_decommitted_get(chunk, run_ind) == |
| 1946 | arena_mapbits_decommitted_get(chunk, run_ind+run_pages-1)); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1947 | arena_avail_insert(arena, chunk, run_ind, run_pages); |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1948 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1949 | if (dirty) |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 1950 | arena_run_dirty_insert(arena, chunk, run_ind, run_pages); |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1951 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1952 | /* Deallocate chunk if it is now completely unused. */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1953 | if (size == arena_maxrun) { |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1954 | assert(run_ind == map_bias); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1955 | assert(run_pages == (arena_maxrun >> LG_PAGE)); |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 1956 | arena_chunk_dalloc(arena, chunk); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1957 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1958 | |
Jason Evans | 4fb7f51 | 2010-01-27 18:27:09 -0800 | [diff] [blame] | 1959 | /* |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1960 | * It is okay to do dirty page processing here even if the chunk was |
Jason Evans | 4fb7f51 | 2010-01-27 18:27:09 -0800 | [diff] [blame] | 1961 | * deallocated above, since in that case it is the spare. Waiting |
| 1962 | * until after possible chunk deallocation to do dirty processing |
| 1963 | * allows for an old spare to be fully deallocated, thus decreasing the |
| 1964 | * chances of spuriously crossing the dirty page purging threshold. |
| 1965 | */ |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1966 | if (dirty) |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 1967 | arena_maybe_purge(arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1968 | } |
| 1969 | |
| 1970 | static void |
| 1971 | arena_run_trim_head(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1972 | size_t oldsize, size_t newsize) |
| 1973 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1974 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
| 1975 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1976 | size_t head_npages = (oldsize - newsize) >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1977 | size_t flag_dirty = arena_mapbits_dirty_get(chunk, pageind); |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 1978 | size_t flag_decommitted = arena_mapbits_decommitted_get(chunk, pageind); |
| 1979 | size_t flag_unzeroed_mask = (flag_dirty | flag_decommitted) == 0 ? |
| 1980 | CHUNK_MAP_UNZEROED : 0; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1981 | |
| 1982 | assert(oldsize > newsize); |
| 1983 | |
| 1984 | /* |
| 1985 | * Update the chunk map so that arena_run_dalloc() can treat the |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1986 | * leading run as separately allocated. Set the last element of each |
| 1987 | * run first, in case of single-page runs. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1988 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1989 | assert(arena_mapbits_large_size_get(chunk, pageind) == oldsize); |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 1990 | arena_mapbits_large_set(chunk, pageind+head_npages-1, 0, flag_dirty | |
| 1991 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 1992 | pageind+head_npages-1))); |
| 1993 | arena_mapbits_large_set(chunk, pageind, oldsize-newsize, flag_dirty | |
| 1994 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, pageind))); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1995 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1996 | if (config_debug) { |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1997 | UNUSED size_t tail_npages = newsize >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1998 | assert(arena_mapbits_large_size_get(chunk, |
| 1999 | pageind+head_npages+tail_npages-1) == 0); |
| 2000 | assert(arena_mapbits_dirty_get(chunk, |
| 2001 | pageind+head_npages+tail_npages-1) == flag_dirty); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2002 | } |
Jason Evans | d8ceef6 | 2012-05-10 20:59:39 -0700 | [diff] [blame] | 2003 | arena_mapbits_large_set(chunk, pageind+head_npages, newsize, |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2004 | flag_dirty | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 2005 | pageind+head_npages))); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2006 | |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2007 | arena_run_dalloc(arena, run, false, false, (flag_decommitted != 0)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2008 | } |
| 2009 | |
| 2010 | static void |
| 2011 | arena_run_trim_tail(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 2012 | size_t oldsize, size_t newsize, bool dirty) |
| 2013 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2014 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
| 2015 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2016 | size_t head_npages = newsize >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2017 | size_t flag_dirty = arena_mapbits_dirty_get(chunk, pageind); |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2018 | size_t flag_decommitted = arena_mapbits_decommitted_get(chunk, pageind); |
| 2019 | size_t flag_unzeroed_mask = (flag_dirty | flag_decommitted) == 0 ? |
| 2020 | CHUNK_MAP_UNZEROED : 0; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2021 | arena_chunk_map_misc_t *tail_miscelm; |
| 2022 | arena_run_t *tail_run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2023 | |
| 2024 | assert(oldsize > newsize); |
| 2025 | |
| 2026 | /* |
| 2027 | * Update the chunk map so that arena_run_dalloc() can treat the |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2028 | * trailing run as separately allocated. Set the last element of each |
| 2029 | * run first, in case of single-page runs. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2030 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2031 | assert(arena_mapbits_large_size_get(chunk, pageind) == oldsize); |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2032 | arena_mapbits_large_set(chunk, pageind+head_npages-1, 0, flag_dirty | |
| 2033 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 2034 | pageind+head_npages-1))); |
| 2035 | arena_mapbits_large_set(chunk, pageind, newsize, flag_dirty | |
| 2036 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, pageind))); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2037 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2038 | if (config_debug) { |
| 2039 | UNUSED size_t tail_npages = (oldsize - newsize) >> LG_PAGE; |
| 2040 | assert(arena_mapbits_large_size_get(chunk, |
| 2041 | pageind+head_npages+tail_npages-1) == 0); |
| 2042 | assert(arena_mapbits_dirty_get(chunk, |
| 2043 | pageind+head_npages+tail_npages-1) == flag_dirty); |
| 2044 | } |
| 2045 | arena_mapbits_large_set(chunk, pageind+head_npages, oldsize-newsize, |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2046 | flag_dirty | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 2047 | pageind+head_npages))); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2048 | |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2049 | tail_miscelm = arena_miscelm_get_mutable(chunk, pageind + head_npages); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2050 | tail_run = &tail_miscelm->run; |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2051 | arena_run_dalloc(arena, tail_run, dirty, false, (flag_decommitted != |
| 2052 | 0)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2053 | } |
| 2054 | |
| 2055 | static arena_run_t * |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2056 | arena_bin_runs_first(arena_bin_t *bin) |
| 2057 | { |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 2058 | ph_node_t *node; |
| 2059 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2060 | |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 2061 | node = ph_first(&bin->runs); |
| 2062 | if (node == NULL) |
| 2063 | return (NULL); |
| 2064 | miscelm = arena_ph_to_miscelm(node); |
| 2065 | return (&miscelm->run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2066 | } |
| 2067 | |
| 2068 | static void |
| 2069 | arena_bin_runs_insert(arena_bin_t *bin, arena_run_t *run) |
| 2070 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2071 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2072 | |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 2073 | ph_insert(&bin->runs, &miscelm->ph_link); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2074 | } |
| 2075 | |
| 2076 | static void |
| 2077 | arena_bin_runs_remove(arena_bin_t *bin, arena_run_t *run) |
| 2078 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2079 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2080 | |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 2081 | ph_remove(&bin->runs, &miscelm->ph_link); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2082 | } |
| 2083 | |
| 2084 | static arena_run_t * |
| 2085 | arena_bin_nonfull_run_tryget(arena_bin_t *bin) |
| 2086 | { |
| 2087 | arena_run_t *run = arena_bin_runs_first(bin); |
| 2088 | if (run != NULL) { |
| 2089 | arena_bin_runs_remove(bin, run); |
| 2090 | if (config_stats) |
| 2091 | bin->stats.reruns++; |
| 2092 | } |
| 2093 | return (run); |
| 2094 | } |
| 2095 | |
| 2096 | static arena_run_t * |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2097 | arena_bin_nonfull_run_get(arena_t *arena, arena_bin_t *bin) |
| 2098 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2099 | arena_run_t *run; |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2100 | szind_t binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2101 | arena_bin_info_t *bin_info; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2102 | |
| 2103 | /* Look for a usable run. */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2104 | run = arena_bin_nonfull_run_tryget(bin); |
| 2105 | if (run != NULL) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2106 | return (run); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2107 | /* No existing runs have any space available. */ |
| 2108 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2109 | binind = arena_bin_index(arena, bin); |
| 2110 | bin_info = &arena_bin_info[binind]; |
| 2111 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2112 | /* Allocate a new run. */ |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2113 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 2114 | /******************************/ |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2115 | malloc_mutex_lock(&arena->lock); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 2116 | run = arena_run_alloc_small(arena, bin_info->run_size, binind); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2117 | if (run != NULL) { |
| 2118 | /* Initialize run internals. */ |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 2119 | run->binind = binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2120 | run->nfree = bin_info->nregs; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2121 | bitmap_init(run->bitmap, &bin_info->bitmap_info); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 2122 | } |
| 2123 | malloc_mutex_unlock(&arena->lock); |
| 2124 | /********************************/ |
| 2125 | malloc_mutex_lock(&bin->lock); |
| 2126 | if (run != NULL) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2127 | if (config_stats) { |
| 2128 | bin->stats.nruns++; |
| 2129 | bin->stats.curruns++; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2130 | } |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2131 | return (run); |
| 2132 | } |
| 2133 | |
| 2134 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 2135 | * arena_run_alloc_small() failed, but another thread may have made |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2136 | * sufficient memory available while this one dropped bin->lock above, |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2137 | * so search one more time. |
| 2138 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2139 | run = arena_bin_nonfull_run_tryget(bin); |
| 2140 | if (run != NULL) |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2141 | return (run); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2142 | |
| 2143 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2144 | } |
| 2145 | |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 2146 | /* Re-fill bin->runcur, then call arena_run_reg_alloc(). */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2147 | static void * |
| 2148 | arena_bin_malloc_hard(arena_t *arena, arena_bin_t *bin) |
| 2149 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2150 | szind_t binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2151 | arena_bin_info_t *bin_info; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2152 | arena_run_t *run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2153 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2154 | binind = arena_bin_index(arena, bin); |
| 2155 | bin_info = &arena_bin_info[binind]; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2156 | bin->runcur = NULL; |
| 2157 | run = arena_bin_nonfull_run_get(arena, bin); |
| 2158 | if (bin->runcur != NULL && bin->runcur->nfree > 0) { |
| 2159 | /* |
| 2160 | * Another thread updated runcur while this one ran without the |
| 2161 | * bin lock in arena_bin_nonfull_run_get(). |
| 2162 | */ |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 2163 | void *ret; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2164 | assert(bin->runcur->nfree > 0); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2165 | ret = arena_run_reg_alloc(bin->runcur, bin_info); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2166 | if (run != NULL) { |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2167 | arena_chunk_t *chunk; |
| 2168 | |
| 2169 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 2170 | * arena_run_alloc_small() may have allocated run, or |
| 2171 | * it may have pulled run from the bin's run tree. |
| 2172 | * Therefore it is unsafe to make any assumptions about |
| 2173 | * how run has previously been used, and |
| 2174 | * arena_bin_lower_run() must be called, as if a region |
| 2175 | * were just deallocated from the run. |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2176 | */ |
| 2177 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2178 | if (run->nfree == bin_info->nregs) |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2179 | arena_dalloc_bin_run(arena, chunk, run, bin); |
| 2180 | else |
| 2181 | arena_bin_lower_run(arena, chunk, run, bin); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2182 | } |
| 2183 | return (ret); |
| 2184 | } |
| 2185 | |
| 2186 | if (run == NULL) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2187 | return (NULL); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2188 | |
| 2189 | bin->runcur = run; |
| 2190 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2191 | assert(bin->runcur->nfree > 0); |
| 2192 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2193 | return (arena_run_reg_alloc(bin->runcur, bin_info)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2194 | } |
| 2195 | |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2196 | void |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2197 | arena_tcache_fill_small(tsd_t *tsd, arena_t *arena, tcache_bin_t *tbin, |
| 2198 | szind_t binind, uint64_t prof_accumbytes) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2199 | { |
| 2200 | unsigned i, nfill; |
| 2201 | arena_bin_t *bin; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2202 | |
| 2203 | assert(tbin->ncached == 0); |
| 2204 | |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 2205 | if (config_prof && arena_prof_accum(arena, prof_accumbytes)) |
| 2206 | prof_idump(); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 2207 | bin = &arena->bins[binind]; |
| 2208 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 1dcb4f8 | 2011-03-21 00:18:17 -0700 | [diff] [blame] | 2209 | for (i = 0, nfill = (tcache_bin_info[binind].ncached_max >> |
| 2210 | tbin->lg_fill_div); i < nfill; i++) { |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 2211 | arena_run_t *run; |
| 2212 | void *ptr; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2213 | if ((run = bin->runcur) != NULL && run->nfree > 0) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2214 | ptr = arena_run_reg_alloc(run, &arena_bin_info[binind]); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2215 | else |
| 2216 | ptr = arena_bin_malloc_hard(arena, bin); |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 2217 | if (ptr == NULL) { |
| 2218 | /* |
| 2219 | * OOM. tbin->avail isn't yet filled down to its first |
| 2220 | * element, so the successful allocations (if any) must |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2221 | * be moved just before tbin->avail before bailing out. |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 2222 | */ |
| 2223 | if (i > 0) { |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2224 | memmove(tbin->avail - i, tbin->avail - nfill, |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 2225 | i * sizeof(void *)); |
| 2226 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2227 | break; |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 2228 | } |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2229 | if (config_fill && unlikely(opt_junk_alloc)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2230 | arena_alloc_junk_small(ptr, &arena_bin_info[binind], |
| 2231 | true); |
| 2232 | } |
Jason Evans | 9c43c13 | 2011-03-18 10:53:15 -0700 | [diff] [blame] | 2233 | /* Insert such that low regions get used first. */ |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2234 | *(tbin->avail - nfill + i) = ptr; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2235 | } |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2236 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2237 | bin->stats.nmalloc += i; |
| 2238 | bin->stats.nrequests += tbin->tstats.nrequests; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2239 | bin->stats.curregs += i; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2240 | bin->stats.nfills++; |
| 2241 | tbin->tstats.nrequests = 0; |
| 2242 | } |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2243 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2244 | tbin->ncached = i; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2245 | arena_decay_tick(tsd, arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2246 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2247 | |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2248 | void |
| 2249 | arena_alloc_junk_small(void *ptr, arena_bin_info_t *bin_info, bool zero) |
| 2250 | { |
| 2251 | |
| 2252 | if (zero) { |
| 2253 | size_t redzone_size = bin_info->redzone_size; |
| 2254 | memset((void *)((uintptr_t)ptr - redzone_size), 0xa5, |
| 2255 | redzone_size); |
| 2256 | memset((void *)((uintptr_t)ptr + bin_info->reg_size), 0xa5, |
| 2257 | redzone_size); |
| 2258 | } else { |
| 2259 | memset((void *)((uintptr_t)ptr - bin_info->redzone_size), 0xa5, |
| 2260 | bin_info->reg_interval); |
| 2261 | } |
| 2262 | } |
| 2263 | |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2264 | #ifdef JEMALLOC_JET |
| 2265 | #undef arena_redzone_corruption |
| 2266 | #define arena_redzone_corruption JEMALLOC_N(arena_redzone_corruption_impl) |
| 2267 | #endif |
| 2268 | static void |
| 2269 | arena_redzone_corruption(void *ptr, size_t usize, bool after, |
| 2270 | size_t offset, uint8_t byte) |
| 2271 | { |
| 2272 | |
Jason Evans | 5fae7dc | 2015-07-23 13:56:25 -0700 | [diff] [blame] | 2273 | malloc_printf("<jemalloc>: Corrupt redzone %zu byte%s %s %p " |
| 2274 | "(size %zu), byte=%#x\n", offset, (offset == 1) ? "" : "s", |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2275 | after ? "after" : "before", ptr, usize, byte); |
| 2276 | } |
| 2277 | #ifdef JEMALLOC_JET |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2278 | #undef arena_redzone_corruption |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2279 | #define arena_redzone_corruption JEMALLOC_N(arena_redzone_corruption) |
| 2280 | arena_redzone_corruption_t *arena_redzone_corruption = |
| 2281 | JEMALLOC_N(arena_redzone_corruption_impl); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2282 | #endif |
| 2283 | |
| 2284 | static void |
| 2285 | arena_redzones_validate(void *ptr, arena_bin_info_t *bin_info, bool reset) |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2286 | { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2287 | bool error = false; |
| 2288 | |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2289 | if (opt_junk_alloc) { |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 2290 | size_t size = bin_info->reg_size; |
| 2291 | size_t redzone_size = bin_info->redzone_size; |
| 2292 | size_t i; |
| 2293 | |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2294 | for (i = 1; i <= redzone_size; i++) { |
| 2295 | uint8_t *byte = (uint8_t *)((uintptr_t)ptr - i); |
| 2296 | if (*byte != 0xa5) { |
| 2297 | error = true; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 2298 | arena_redzone_corruption(ptr, size, false, i, |
| 2299 | *byte); |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2300 | if (reset) |
| 2301 | *byte = 0xa5; |
| 2302 | } |
| 2303 | } |
| 2304 | for (i = 0; i < redzone_size; i++) { |
| 2305 | uint8_t *byte = (uint8_t *)((uintptr_t)ptr + size + i); |
| 2306 | if (*byte != 0xa5) { |
| 2307 | error = true; |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 2308 | arena_redzone_corruption(ptr, size, true, i, |
| 2309 | *byte); |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2310 | if (reset) |
| 2311 | *byte = 0xa5; |
| 2312 | } |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2313 | } |
| 2314 | } |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2315 | |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2316 | if (opt_abort && error) |
| 2317 | abort(); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2318 | } |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2319 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2320 | #ifdef JEMALLOC_JET |
| 2321 | #undef arena_dalloc_junk_small |
| 2322 | #define arena_dalloc_junk_small JEMALLOC_N(arena_dalloc_junk_small_impl) |
| 2323 | #endif |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2324 | void |
| 2325 | arena_dalloc_junk_small(void *ptr, arena_bin_info_t *bin_info) |
| 2326 | { |
| 2327 | size_t redzone_size = bin_info->redzone_size; |
| 2328 | |
| 2329 | arena_redzones_validate(ptr, bin_info, false); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2330 | memset((void *)((uintptr_t)ptr - redzone_size), 0x5a, |
| 2331 | bin_info->reg_interval); |
| 2332 | } |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2333 | #ifdef JEMALLOC_JET |
| 2334 | #undef arena_dalloc_junk_small |
| 2335 | #define arena_dalloc_junk_small JEMALLOC_N(arena_dalloc_junk_small) |
| 2336 | arena_dalloc_junk_small_t *arena_dalloc_junk_small = |
| 2337 | JEMALLOC_N(arena_dalloc_junk_small_impl); |
| 2338 | #endif |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2339 | |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2340 | void |
| 2341 | arena_quarantine_junk_small(void *ptr, size_t usize) |
| 2342 | { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2343 | szind_t binind; |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2344 | arena_bin_info_t *bin_info; |
| 2345 | cassert(config_fill); |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2346 | assert(opt_junk_free); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2347 | assert(opt_quarantine); |
| 2348 | assert(usize <= SMALL_MAXCLASS); |
| 2349 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2350 | binind = size2index(usize); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 2351 | bin_info = &arena_bin_info[binind]; |
| 2352 | arena_redzones_validate(ptr, bin_info, true); |
| 2353 | } |
| 2354 | |
Jason Evans | 578cd16 | 2016-02-19 18:40:03 -0800 | [diff] [blame] | 2355 | static void * |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2356 | arena_malloc_small(tsd_t *tsd, arena_t *arena, szind_t binind, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2357 | { |
| 2358 | void *ret; |
| 2359 | arena_bin_t *bin; |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2360 | size_t usize; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2361 | arena_run_t *run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2362 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2363 | assert(binind < NBINS); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2364 | bin = &arena->bins[binind]; |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2365 | usize = index2size(binind); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2366 | |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2367 | malloc_mutex_lock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2368 | if ((run = bin->runcur) != NULL && run->nfree > 0) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2369 | ret = arena_run_reg_alloc(run, &arena_bin_info[binind]); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2370 | else |
| 2371 | ret = arena_bin_malloc_hard(arena, bin); |
| 2372 | |
| 2373 | if (ret == NULL) { |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2374 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2375 | return (NULL); |
| 2376 | } |
| 2377 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2378 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2379 | bin->stats.nmalloc++; |
| 2380 | bin->stats.nrequests++; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2381 | bin->stats.curregs++; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2382 | } |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2383 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2384 | if (config_prof && !isthreaded && arena_prof_accum(arena, usize)) |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 2385 | prof_idump(); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2386 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2387 | if (!zero) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2388 | if (config_fill) { |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2389 | if (unlikely(opt_junk_alloc)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2390 | arena_alloc_junk_small(ret, |
| 2391 | &arena_bin_info[binind], false); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2392 | } else if (unlikely(opt_zero)) |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2393 | memset(ret, 0, usize); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2394 | } |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2395 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, usize); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2396 | } else { |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2397 | if (config_fill && unlikely(opt_junk_alloc)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2398 | arena_alloc_junk_small(ret, &arena_bin_info[binind], |
| 2399 | true); |
| 2400 | } |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2401 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, usize); |
| 2402 | memset(ret, 0, usize); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2403 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2404 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2405 | arena_decay_tick(tsd, arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2406 | return (ret); |
| 2407 | } |
| 2408 | |
| 2409 | void * |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2410 | arena_malloc_large(tsd_t *tsd, arena_t *arena, szind_t binind, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2411 | { |
| 2412 | void *ret; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2413 | size_t usize; |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2414 | uintptr_t random_offset; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2415 | arena_run_t *run; |
| 2416 | arena_chunk_map_misc_t *miscelm; |
Dmitri Smirnov | 33184bf | 2016-02-29 14:30:19 -0800 | [diff] [blame] | 2417 | UNUSED bool idump JEMALLOC_CC_SILENCE_INIT(false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2418 | |
| 2419 | /* Large allocation. */ |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2420 | usize = index2size(binind); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2421 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2422 | if (config_cache_oblivious) { |
Jason Evans | bce61d6 | 2015-07-07 09:32:05 -0700 | [diff] [blame] | 2423 | uint64_t r; |
| 2424 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2425 | /* |
| 2426 | * Compute a uniformly distributed offset within the first page |
| 2427 | * that is a multiple of the cacheline size, e.g. [0 .. 63) * 64 |
| 2428 | * for 4 KiB pages and 64-byte cachelines. |
| 2429 | */ |
Jason Evans | 34676d3 | 2016-02-09 16:28:40 -0800 | [diff] [blame] | 2430 | r = prng_lg_range(&arena->offset_state, LG_PAGE - LG_CACHELINE); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2431 | random_offset = ((uintptr_t)r) << LG_CACHELINE; |
| 2432 | } else |
| 2433 | random_offset = 0; |
| 2434 | run = arena_run_alloc_large(arena, usize + large_pad, zero); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2435 | if (run == NULL) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2436 | malloc_mutex_unlock(&arena->lock); |
| 2437 | return (NULL); |
| 2438 | } |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2439 | miscelm = arena_run_to_miscelm(run); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2440 | ret = (void *)((uintptr_t)arena_miscelm_to_rpages(miscelm) + |
| 2441 | random_offset); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2442 | if (config_stats) { |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2443 | szind_t index = binind - NBINS; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2444 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2445 | arena->stats.nmalloc_large++; |
| 2446 | arena->stats.nrequests_large++; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2447 | arena->stats.allocated_large += usize; |
| 2448 | arena->stats.lstats[index].nmalloc++; |
| 2449 | arena->stats.lstats[index].nrequests++; |
| 2450 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2451 | } |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2452 | if (config_prof) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2453 | idump = arena_prof_accum_locked(arena, usize); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2454 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 2455 | if (config_prof && idump) |
| 2456 | prof_idump(); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2457 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2458 | if (!zero) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2459 | if (config_fill) { |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2460 | if (unlikely(opt_junk_alloc)) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2461 | memset(ret, 0xa5, usize); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2462 | else if (unlikely(opt_zero)) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2463 | memset(ret, 0, usize); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2464 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2465 | } |
| 2466 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2467 | arena_decay_tick(tsd, arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2468 | return (ret); |
| 2469 | } |
| 2470 | |
Jason Evans | 578cd16 | 2016-02-19 18:40:03 -0800 | [diff] [blame] | 2471 | void * |
| 2472 | arena_malloc_hard(tsd_t *tsd, arena_t *arena, size_t size, szind_t ind, |
| 2473 | bool zero, tcache_t *tcache) |
| 2474 | { |
| 2475 | |
| 2476 | arena = arena_choose(tsd, arena); |
| 2477 | if (unlikely(arena == NULL)) |
| 2478 | return (NULL); |
| 2479 | |
| 2480 | if (likely(size <= SMALL_MAXCLASS)) |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2481 | return (arena_malloc_small(tsd, arena, ind, zero)); |
Jason Evans | 578cd16 | 2016-02-19 18:40:03 -0800 | [diff] [blame] | 2482 | if (likely(size <= large_maxclass)) |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 2483 | return (arena_malloc_large(tsd, arena, ind, zero)); |
| 2484 | return (huge_malloc(tsd, arena, index2size(ind), zero, tcache)); |
Jason Evans | 578cd16 | 2016-02-19 18:40:03 -0800 | [diff] [blame] | 2485 | } |
| 2486 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2487 | /* Only handles large allocations that require more than page alignment. */ |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 2488 | static void * |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2489 | arena_palloc_large(tsd_t *tsd, arena_t *arena, size_t usize, size_t alignment, |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 2490 | bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2491 | { |
| 2492 | void *ret; |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2493 | size_t alloc_size, leadsize, trailsize; |
| 2494 | arena_run_t *run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2495 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2496 | arena_chunk_map_misc_t *miscelm; |
| 2497 | void *rpages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2498 | |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2499 | assert(usize == PAGE_CEILING(usize)); |
Jason Evans | 9344368 | 2010-10-20 17:39:18 -0700 | [diff] [blame] | 2500 | |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 2501 | arena = arena_choose(tsd, arena); |
| 2502 | if (unlikely(arena == NULL)) |
| 2503 | return (NULL); |
| 2504 | |
Jason Evans | 9344368 | 2010-10-20 17:39:18 -0700 | [diff] [blame] | 2505 | alignment = PAGE_CEILING(alignment); |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2506 | alloc_size = usize + large_pad + alignment - PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2507 | |
| 2508 | malloc_mutex_lock(&arena->lock); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 2509 | run = arena_run_alloc_large(arena, alloc_size, false); |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2510 | if (run == NULL) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2511 | malloc_mutex_unlock(&arena->lock); |
| 2512 | return (NULL); |
| 2513 | } |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2514 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2515 | miscelm = arena_run_to_miscelm(run); |
| 2516 | rpages = arena_miscelm_to_rpages(miscelm); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2517 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2518 | leadsize = ALIGNMENT_CEILING((uintptr_t)rpages, alignment) - |
| 2519 | (uintptr_t)rpages; |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2520 | assert(alloc_size >= leadsize + usize); |
| 2521 | trailsize = alloc_size - leadsize - usize - large_pad; |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2522 | if (leadsize != 0) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2523 | arena_chunk_map_misc_t *head_miscelm = miscelm; |
| 2524 | arena_run_t *head_run = run; |
| 2525 | |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2526 | miscelm = arena_miscelm_get_mutable(chunk, |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2527 | arena_miscelm_to_pageind(head_miscelm) + (leadsize >> |
| 2528 | LG_PAGE)); |
| 2529 | run = &miscelm->run; |
| 2530 | |
| 2531 | arena_run_trim_head(arena, chunk, head_run, alloc_size, |
| 2532 | alloc_size - leadsize); |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2533 | } |
| 2534 | if (trailsize != 0) { |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2535 | arena_run_trim_tail(arena, chunk, run, usize + large_pad + |
| 2536 | trailsize, usize + large_pad, false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2537 | } |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 2538 | if (arena_run_init_large(arena, run, usize + large_pad, zero)) { |
| 2539 | size_t run_ind = |
| 2540 | arena_miscelm_to_pageind(arena_run_to_miscelm(run)); |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 2541 | bool dirty = (arena_mapbits_dirty_get(chunk, run_ind) != 0); |
| 2542 | bool decommitted = (arena_mapbits_decommitted_get(chunk, |
| 2543 | run_ind) != 0); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 2544 | |
Jason Evans | de249c8 | 2015-08-09 16:47:27 -0700 | [diff] [blame] | 2545 | assert(decommitted); /* Cause of OOM. */ |
| 2546 | arena_run_dalloc(arena, run, dirty, false, decommitted); |
Jason Evans | 8fadb1a | 2015-08-04 10:49:46 -0700 | [diff] [blame] | 2547 | malloc_mutex_unlock(&arena->lock); |
| 2548 | return (NULL); |
| 2549 | } |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2550 | ret = arena_miscelm_to_rpages(miscelm); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2551 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2552 | if (config_stats) { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2553 | szind_t index = size2index(usize) - NBINS; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2554 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2555 | arena->stats.nmalloc_large++; |
| 2556 | arena->stats.nrequests_large++; |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2557 | arena->stats.allocated_large += usize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2558 | arena->stats.lstats[index].nmalloc++; |
| 2559 | arena->stats.lstats[index].nrequests++; |
| 2560 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2561 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2562 | malloc_mutex_unlock(&arena->lock); |
| 2563 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2564 | if (config_fill && !zero) { |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2565 | if (unlikely(opt_junk_alloc)) |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2566 | memset(ret, 0xa5, usize); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2567 | else if (unlikely(opt_zero)) |
Jason Evans | 50883de | 2015-07-23 17:13:18 -0700 | [diff] [blame] | 2568 | memset(ret, 0, usize); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2569 | } |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2570 | arena_decay_tick(tsd, arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2571 | return (ret); |
| 2572 | } |
| 2573 | |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 2574 | void * |
| 2575 | arena_palloc(tsd_t *tsd, arena_t *arena, size_t usize, size_t alignment, |
| 2576 | bool zero, tcache_t *tcache) |
| 2577 | { |
| 2578 | void *ret; |
| 2579 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2580 | if (usize <= SMALL_MAXCLASS && (alignment < PAGE || (alignment == PAGE |
Jason Evans | 5154175 | 2015-05-19 17:42:31 -0700 | [diff] [blame] | 2581 | && (usize & PAGE_MASK) == 0))) { |
| 2582 | /* Small; alignment doesn't require special run placement. */ |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2583 | ret = arena_malloc(tsd, arena, usize, size2index(usize), zero, |
| 2584 | tcache, true); |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 2585 | } else if (usize <= large_maxclass && alignment <= PAGE) { |
Jason Evans | 5154175 | 2015-05-19 17:42:31 -0700 | [diff] [blame] | 2586 | /* |
| 2587 | * Large; alignment doesn't require special run placement. |
| 2588 | * However, the cached pointer may be at a random offset from |
| 2589 | * the base of the run, so do some bit manipulation to retrieve |
| 2590 | * the base. |
| 2591 | */ |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 2592 | ret = arena_malloc(tsd, arena, usize, size2index(usize), zero, |
| 2593 | tcache, true); |
Jason Evans | 5154175 | 2015-05-19 17:42:31 -0700 | [diff] [blame] | 2594 | if (config_cache_oblivious) |
| 2595 | ret = (void *)((uintptr_t)ret & ~PAGE_MASK); |
| 2596 | } else { |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 2597 | if (likely(usize <= large_maxclass)) { |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 2598 | ret = arena_palloc_large(tsd, arena, usize, alignment, |
| 2599 | zero); |
| 2600 | } else if (likely(alignment <= chunksize)) |
| 2601 | ret = huge_malloc(tsd, arena, usize, zero, tcache); |
| 2602 | else { |
| 2603 | ret = huge_palloc(tsd, arena, usize, alignment, zero, |
| 2604 | tcache); |
| 2605 | } |
| 2606 | } |
| 2607 | return (ret); |
| 2608 | } |
| 2609 | |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2610 | void |
| 2611 | arena_prof_promoted(const void *ptr, size_t size) |
| 2612 | { |
| 2613 | arena_chunk_t *chunk; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2614 | size_t pageind; |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2615 | szind_t binind; |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2616 | |
Jason Evans | 78f7352 | 2012-04-18 13:38:40 -0700 | [diff] [blame] | 2617 | cassert(config_prof); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2618 | assert(ptr != NULL); |
| 2619 | assert(CHUNK_ADDR2BASE(ptr) != ptr); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2620 | assert(isalloc(ptr, false) == LARGE_MINCLASS); |
| 2621 | assert(isalloc(ptr, true) == LARGE_MINCLASS); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2622 | assert(size <= SMALL_MAXCLASS); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2623 | |
| 2624 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2625 | pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2626 | binind = size2index(size); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2627 | assert(binind < NBINS); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2628 | arena_mapbits_large_binind_set(chunk, pageind, binind); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2629 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2630 | assert(isalloc(ptr, false) == LARGE_MINCLASS); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2631 | assert(isalloc(ptr, true) == size); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 2632 | } |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 2633 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2634 | static void |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2635 | arena_dissociate_bin_run(arena_chunk_t *chunk, arena_run_t *run, |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2636 | arena_bin_t *bin) |
| 2637 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2638 | |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 2639 | /* Dissociate run from bin. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2640 | if (run == bin->runcur) |
| 2641 | bin->runcur = NULL; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2642 | else { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2643 | szind_t binind = arena_bin_index(extent_node_arena_get( |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 2644 | &chunk->node), bin); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2645 | arena_bin_info_t *bin_info = &arena_bin_info[binind]; |
| 2646 | |
| 2647 | if (bin_info->nregs != 1) { |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2648 | /* |
| 2649 | * This block's conditional is necessary because if the |
| 2650 | * run only contains one region, then it never gets |
| 2651 | * inserted into the non-full runs tree. |
| 2652 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2653 | arena_bin_runs_remove(bin, run); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2654 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2655 | } |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2656 | } |
| 2657 | |
| 2658 | static void |
| 2659 | arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 2660 | arena_bin_t *bin) |
| 2661 | { |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2662 | |
| 2663 | assert(run != bin->runcur); |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2664 | |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2665 | malloc_mutex_unlock(&bin->lock); |
| 2666 | /******************************/ |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2667 | malloc_mutex_lock(&arena->lock); |
Mike Hommey | f97298b | 2015-09-03 20:32:57 +0900 | [diff] [blame] | 2668 | arena_run_dalloc(arena, run, true, false, false); |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2669 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 2670 | /****************************/ |
| 2671 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2672 | if (config_stats) |
| 2673 | bin->stats.curruns--; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2674 | } |
| 2675 | |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2676 | static void |
| 2677 | arena_bin_lower_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 2678 | arena_bin_t *bin) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2679 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2680 | |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2681 | /* |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2682 | * Make sure that if bin->runcur is non-NULL, it refers to the lowest |
| 2683 | * non-full run. It is okay to NULL runcur out rather than proactively |
| 2684 | * keeping it pointing at the lowest non-full run. |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2685 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2686 | if ((uintptr_t)run < (uintptr_t)bin->runcur) { |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2687 | /* Switch runcur. */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2688 | if (bin->runcur->nfree > 0) |
| 2689 | arena_bin_runs_insert(bin, bin->runcur); |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2690 | bin->runcur = run; |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 2691 | if (config_stats) |
| 2692 | bin->stats.reruns++; |
| 2693 | } else |
| 2694 | arena_bin_runs_insert(bin, run); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2695 | } |
| 2696 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2697 | static void |
| 2698 | arena_dalloc_bin_locked_impl(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
| 2699 | arena_chunk_map_bits_t *bitselm, bool junked) |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2700 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2701 | size_t pageind, rpages_ind; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2702 | arena_run_t *run; |
| 2703 | arena_bin_t *bin; |
Mike Hommey | 8b49971 | 2012-04-24 23:22:02 +0200 | [diff] [blame] | 2704 | arena_bin_info_t *bin_info; |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2705 | szind_t binind; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2706 | |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2707 | pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2708 | rpages_ind = pageind - arena_mapbits_small_runind_get(chunk, pageind); |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2709 | run = &arena_miscelm_get_mutable(chunk, rpages_ind)->run; |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 2710 | binind = run->binind; |
| 2711 | bin = &arena->bins[binind]; |
Mike Hommey | 8b49971 | 2012-04-24 23:22:02 +0200 | [diff] [blame] | 2712 | bin_info = &arena_bin_info[binind]; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2713 | |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2714 | if (!junked && config_fill && unlikely(opt_junk_free)) |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2715 | arena_dalloc_junk_small(ptr, bin_info); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2716 | |
| 2717 | arena_run_reg_dalloc(run, ptr); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2718 | if (run->nfree == bin_info->nregs) { |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2719 | arena_dissociate_bin_run(chunk, run, bin); |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2720 | arena_dalloc_bin_run(arena, chunk, run, bin); |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2721 | } else if (run->nfree == 1 && run != bin->runcur) |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 2722 | arena_bin_lower_run(arena, chunk, run, bin); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2723 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2724 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2725 | bin->stats.ndalloc++; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2726 | bin->stats.curregs--; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2727 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2728 | } |
| 2729 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2730 | void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2731 | arena_dalloc_bin_junked_locked(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
| 2732 | arena_chunk_map_bits_t *bitselm) |
| 2733 | { |
| 2734 | |
| 2735 | arena_dalloc_bin_locked_impl(arena, chunk, ptr, bitselm, true); |
| 2736 | } |
| 2737 | |
| 2738 | void |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2739 | arena_dalloc_bin(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2740 | size_t pageind, arena_chunk_map_bits_t *bitselm) |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2741 | { |
| 2742 | arena_run_t *run; |
| 2743 | arena_bin_t *bin; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2744 | size_t rpages_ind; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2745 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2746 | rpages_ind = pageind - arena_mapbits_small_runind_get(chunk, pageind); |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2747 | run = &arena_miscelm_get_mutable(chunk, rpages_ind)->run; |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 2748 | bin = &arena->bins[run->binind]; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2749 | malloc_mutex_lock(&bin->lock); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2750 | arena_dalloc_bin_locked_impl(arena, chunk, ptr, bitselm, false); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2751 | malloc_mutex_unlock(&bin->lock); |
| 2752 | } |
| 2753 | |
| 2754 | void |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2755 | arena_dalloc_small(tsd_t *tsd, arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2756 | size_t pageind) |
| 2757 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2758 | arena_chunk_map_bits_t *bitselm; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2759 | |
| 2760 | if (config_debug) { |
Jason Evans | 80737c3 | 2012-05-02 16:11:03 -0700 | [diff] [blame] | 2761 | /* arena_ptr_small_binind_get() does extra sanity checking. */ |
| 2762 | assert(arena_ptr_small_binind_get(ptr, arena_mapbits_get(chunk, |
| 2763 | pageind)) != BININD_INVALID); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2764 | } |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2765 | bitselm = arena_bitselm_get_mutable(chunk, pageind); |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2766 | arena_dalloc_bin(arena, chunk, ptr, pageind, bitselm); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2767 | arena_decay_tick(tsd, arena); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2768 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2769 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2770 | #ifdef JEMALLOC_JET |
| 2771 | #undef arena_dalloc_junk_large |
| 2772 | #define arena_dalloc_junk_large JEMALLOC_N(arena_dalloc_junk_large_impl) |
| 2773 | #endif |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2774 | void |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2775 | arena_dalloc_junk_large(void *ptr, size_t usize) |
| 2776 | { |
| 2777 | |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2778 | if (config_fill && unlikely(opt_junk_free)) |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2779 | memset(ptr, 0x5a, usize); |
| 2780 | } |
| 2781 | #ifdef JEMALLOC_JET |
| 2782 | #undef arena_dalloc_junk_large |
| 2783 | #define arena_dalloc_junk_large JEMALLOC_N(arena_dalloc_junk_large) |
| 2784 | arena_dalloc_junk_large_t *arena_dalloc_junk_large = |
| 2785 | JEMALLOC_N(arena_dalloc_junk_large_impl); |
| 2786 | #endif |
| 2787 | |
Jason Evans | e56b24e | 2015-09-20 09:58:10 -0700 | [diff] [blame] | 2788 | static void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2789 | arena_dalloc_large_locked_impl(arena_t *arena, arena_chunk_t *chunk, |
| 2790 | void *ptr, bool junked) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2791 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2792 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2793 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get_mutable(chunk, |
| 2794 | pageind); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2795 | arena_run_t *run = &miscelm->run; |
Jason Evans | 1366826 | 2010-01-31 03:57:29 -0800 | [diff] [blame] | 2796 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2797 | if (config_fill || config_stats) { |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2798 | size_t usize = arena_mapbits_large_size_get(chunk, pageind) - |
| 2799 | large_pad; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2800 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2801 | if (!junked) |
| 2802 | arena_dalloc_junk_large(ptr, usize); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2803 | if (config_stats) { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2804 | szind_t index = size2index(usize) - NBINS; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2805 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2806 | arena->stats.ndalloc_large++; |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2807 | arena->stats.allocated_large -= usize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2808 | arena->stats.lstats[index].ndalloc++; |
| 2809 | arena->stats.lstats[index].curruns--; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2810 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2811 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2812 | |
Mike Hommey | f97298b | 2015-09-03 20:32:57 +0900 | [diff] [blame] | 2813 | arena_run_dalloc(arena, run, true, false, false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2814 | } |
| 2815 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2816 | void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2817 | arena_dalloc_large_junked_locked(arena_t *arena, arena_chunk_t *chunk, |
| 2818 | void *ptr) |
| 2819 | { |
| 2820 | |
| 2821 | arena_dalloc_large_locked_impl(arena, chunk, ptr, true); |
| 2822 | } |
| 2823 | |
| 2824 | void |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2825 | arena_dalloc_large(tsd_t *tsd, arena_t *arena, arena_chunk_t *chunk, void *ptr) |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2826 | { |
| 2827 | |
| 2828 | malloc_mutex_lock(&arena->lock); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2829 | arena_dalloc_large_locked_impl(arena, chunk, ptr, false); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2830 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 2831 | arena_decay_tick(tsd, arena); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2832 | } |
| 2833 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2834 | static void |
| 2835 | arena_ralloc_large_shrink(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2836 | size_t oldsize, size_t size) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2837 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2838 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2839 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get_mutable(chunk, |
| 2840 | pageind); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2841 | arena_run_t *run = &miscelm->run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2842 | |
| 2843 | assert(size < oldsize); |
| 2844 | |
| 2845 | /* |
| 2846 | * Shrink the run, and make trailing pages available for other |
| 2847 | * allocations. |
| 2848 | */ |
| 2849 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2850 | arena_run_trim_tail(arena, chunk, run, oldsize + large_pad, size + |
| 2851 | large_pad, true); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2852 | if (config_stats) { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2853 | szind_t oldindex = size2index(oldsize) - NBINS; |
| 2854 | szind_t index = size2index(size) - NBINS; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2855 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2856 | arena->stats.ndalloc_large++; |
| 2857 | arena->stats.allocated_large -= oldsize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2858 | arena->stats.lstats[oldindex].ndalloc++; |
| 2859 | arena->stats.lstats[oldindex].curruns--; |
Jason Evans | 990d10c | 2010-01-31 03:49:35 -0800 | [diff] [blame] | 2860 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2861 | arena->stats.nmalloc_large++; |
| 2862 | arena->stats.nrequests_large++; |
| 2863 | arena->stats.allocated_large += size; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2864 | arena->stats.lstats[index].nmalloc++; |
| 2865 | arena->stats.lstats[index].nrequests++; |
| 2866 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2867 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2868 | malloc_mutex_unlock(&arena->lock); |
| 2869 | } |
| 2870 | |
| 2871 | static bool |
| 2872 | arena_ralloc_large_grow(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2873 | size_t oldsize, size_t usize_min, size_t usize_max, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2874 | { |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2875 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 5716d97 | 2015-08-06 23:34:12 -0700 | [diff] [blame] | 2876 | size_t npages = (oldsize + large_pad) >> LG_PAGE; |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2877 | size_t followsize; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2878 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 2879 | assert(oldsize == arena_mapbits_large_size_get(chunk, pageind) - |
| 2880 | large_pad); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2881 | |
| 2882 | /* Try to extend the run. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2883 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2884 | if (pageind+npages >= chunk_npages || arena_mapbits_allocated_get(chunk, |
| 2885 | pageind+npages) != 0) |
| 2886 | goto label_fail; |
| 2887 | followsize = arena_mapbits_unallocated_size_get(chunk, pageind+npages); |
| 2888 | if (oldsize + followsize >= usize_min) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2889 | /* |
| 2890 | * The next run is available and sufficiently large. Split the |
| 2891 | * following run, then merge the first part with the existing |
| 2892 | * allocation. |
| 2893 | */ |
Guilherme Goncalves | 9c6a8d3 | 2014-12-17 14:46:35 -0200 | [diff] [blame] | 2894 | arena_run_t *run; |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2895 | size_t usize, splitsize, size, flag_dirty, flag_unzeroed_mask; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2896 | |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2897 | usize = usize_max; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2898 | while (oldsize + followsize < usize) |
| 2899 | usize = index2size(size2index(usize)-1); |
| 2900 | assert(usize >= usize_min); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2901 | assert(usize >= oldsize); |
Jason Evans | 5716d97 | 2015-08-06 23:34:12 -0700 | [diff] [blame] | 2902 | splitsize = usize - oldsize; |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2903 | if (splitsize == 0) |
| 2904 | goto label_fail; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2905 | |
Jason Evans | 61a6dfc | 2016-03-23 16:04:38 -0700 | [diff] [blame] | 2906 | run = &arena_miscelm_get_mutable(chunk, pageind+npages)->run; |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2907 | if (arena_run_split_large(arena, run, splitsize, zero)) |
| 2908 | goto label_fail; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2909 | |
Jason Evans | d260f44 | 2015-09-24 16:38:45 -0700 | [diff] [blame] | 2910 | if (config_cache_oblivious && zero) { |
| 2911 | /* |
| 2912 | * Zero the trailing bytes of the original allocation's |
| 2913 | * last page, since they are in an indeterminate state. |
Jason Evans | a784e41 | 2015-09-24 22:21:55 -0700 | [diff] [blame] | 2914 | * There will always be trailing bytes, because ptr's |
| 2915 | * offset from the beginning of the run is a multiple of |
| 2916 | * CACHELINE in [0 .. PAGE). |
Jason Evans | d260f44 | 2015-09-24 16:38:45 -0700 | [diff] [blame] | 2917 | */ |
Jason Evans | a784e41 | 2015-09-24 22:21:55 -0700 | [diff] [blame] | 2918 | void *zbase = (void *)((uintptr_t)ptr + oldsize); |
| 2919 | void *zpast = PAGE_ADDR2BASE((void *)((uintptr_t)zbase + |
| 2920 | PAGE)); |
| 2921 | size_t nzero = (uintptr_t)zpast - (uintptr_t)zbase; |
| 2922 | assert(nzero > 0); |
| 2923 | memset(zbase, 0, nzero); |
Jason Evans | d260f44 | 2015-09-24 16:38:45 -0700 | [diff] [blame] | 2924 | } |
| 2925 | |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2926 | size = oldsize + splitsize; |
Jason Evans | 5716d97 | 2015-08-06 23:34:12 -0700 | [diff] [blame] | 2927 | npages = (size + large_pad) >> LG_PAGE; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2928 | |
| 2929 | /* |
| 2930 | * Mark the extended run as dirty if either portion of the run |
| 2931 | * was dirty before allocation. This is rather pedantic, |
| 2932 | * because there's not actually any sequence of events that |
| 2933 | * could cause the resulting run to be passed to |
| 2934 | * arena_run_dalloc() with the dirty argument set to false |
| 2935 | * (which is when dirty flag consistency would really matter). |
| 2936 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2937 | flag_dirty = arena_mapbits_dirty_get(chunk, pageind) | |
| 2938 | arena_mapbits_dirty_get(chunk, pageind+npages-1); |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2939 | flag_unzeroed_mask = flag_dirty == 0 ? CHUNK_MAP_UNZEROED : 0; |
Jason Evans | 5716d97 | 2015-08-06 23:34:12 -0700 | [diff] [blame] | 2940 | arena_mapbits_large_set(chunk, pageind, size + large_pad, |
Jason Evans | 1f27abc | 2015-08-11 12:42:33 -0700 | [diff] [blame] | 2941 | flag_dirty | (flag_unzeroed_mask & |
| 2942 | arena_mapbits_unzeroed_get(chunk, pageind))); |
| 2943 | arena_mapbits_large_set(chunk, pageind+npages-1, 0, flag_dirty | |
| 2944 | (flag_unzeroed_mask & arena_mapbits_unzeroed_get(chunk, |
| 2945 | pageind+npages-1))); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2946 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2947 | if (config_stats) { |
Jason Evans | d01fd19 | 2015-08-19 15:21:32 -0700 | [diff] [blame] | 2948 | szind_t oldindex = size2index(oldsize) - NBINS; |
| 2949 | szind_t index = size2index(size) - NBINS; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2950 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2951 | arena->stats.ndalloc_large++; |
| 2952 | arena->stats.allocated_large -= oldsize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2953 | arena->stats.lstats[oldindex].ndalloc++; |
| 2954 | arena->stats.lstats[oldindex].curruns--; |
Jason Evans | 990d10c | 2010-01-31 03:49:35 -0800 | [diff] [blame] | 2955 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2956 | arena->stats.nmalloc_large++; |
| 2957 | arena->stats.nrequests_large++; |
| 2958 | arena->stats.allocated_large += size; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2959 | arena->stats.lstats[index].nmalloc++; |
| 2960 | arena->stats.lstats[index].nrequests++; |
| 2961 | arena->stats.lstats[index].curruns++; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2962 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2963 | malloc_mutex_unlock(&arena->lock); |
| 2964 | return (false); |
| 2965 | } |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2966 | label_fail: |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2967 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2968 | return (true); |
| 2969 | } |
| 2970 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2971 | #ifdef JEMALLOC_JET |
| 2972 | #undef arena_ralloc_junk_large |
| 2973 | #define arena_ralloc_junk_large JEMALLOC_N(arena_ralloc_junk_large_impl) |
| 2974 | #endif |
| 2975 | static void |
| 2976 | arena_ralloc_junk_large(void *ptr, size_t old_usize, size_t usize) |
| 2977 | { |
| 2978 | |
Guilherme Goncalves | 2c5cb61 | 2014-12-08 19:12:41 -0200 | [diff] [blame] | 2979 | if (config_fill && unlikely(opt_junk_free)) { |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2980 | memset((void *)((uintptr_t)ptr + usize), 0x5a, |
| 2981 | old_usize - usize); |
| 2982 | } |
| 2983 | } |
| 2984 | #ifdef JEMALLOC_JET |
| 2985 | #undef arena_ralloc_junk_large |
| 2986 | #define arena_ralloc_junk_large JEMALLOC_N(arena_ralloc_junk_large) |
| 2987 | arena_ralloc_junk_large_t *arena_ralloc_junk_large = |
| 2988 | JEMALLOC_N(arena_ralloc_junk_large_impl); |
| 2989 | #endif |
| 2990 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2991 | /* |
| 2992 | * Try to resize a large allocation, in order to avoid copying. This will |
| 2993 | * always fail if growing an object, and the following run is already in use. |
| 2994 | */ |
| 2995 | static bool |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2996 | arena_ralloc_large(void *ptr, size_t oldsize, size_t usize_min, |
| 2997 | size_t usize_max, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2998 | { |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 2999 | arena_chunk_t *chunk; |
| 3000 | arena_t *arena; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3001 | |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3002 | if (oldsize == usize_max) { |
| 3003 | /* Current size class is compatible and maximal. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3004 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3005 | } |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3006 | |
| 3007 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); |
| 3008 | arena = extent_node_arena_get(&chunk->node); |
| 3009 | |
| 3010 | if (oldsize < usize_max) { |
| 3011 | bool ret = arena_ralloc_large_grow(arena, chunk, ptr, oldsize, |
| 3012 | usize_min, usize_max, zero); |
| 3013 | if (config_fill && !ret && !zero) { |
| 3014 | if (unlikely(opt_junk_alloc)) { |
| 3015 | memset((void *)((uintptr_t)ptr + oldsize), 0xa5, |
| 3016 | isalloc(ptr, config_prof) - oldsize); |
| 3017 | } else if (unlikely(opt_zero)) { |
| 3018 | memset((void *)((uintptr_t)ptr + oldsize), 0, |
| 3019 | isalloc(ptr, config_prof) - oldsize); |
| 3020 | } |
| 3021 | } |
| 3022 | return (ret); |
| 3023 | } |
| 3024 | |
| 3025 | assert(oldsize > usize_max); |
| 3026 | /* Fill before shrinking in order avoid a race. */ |
| 3027 | arena_ralloc_junk_large(ptr, oldsize, usize_max); |
| 3028 | arena_ralloc_large_shrink(arena, chunk, ptr, oldsize, usize_max); |
| 3029 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3030 | } |
| 3031 | |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 3032 | bool |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3033 | arena_ralloc_no_move(tsd_t *tsd, void *ptr, size_t oldsize, size_t size, |
| 3034 | size_t extra, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3035 | { |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3036 | size_t usize_min, usize_max; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3037 | |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 3038 | /* Calls with non-zero extra had to clamp extra. */ |
| 3039 | assert(extra == 0 || size + extra <= HUGE_MAXCLASS); |
| 3040 | |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 3041 | if (unlikely(size > HUGE_MAXCLASS)) |
| 3042 | return (true); |
| 3043 | |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3044 | usize_min = s2u(size); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3045 | usize_max = s2u(size + extra); |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 3046 | if (likely(oldsize <= large_maxclass && usize_min <= large_maxclass)) { |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3047 | arena_chunk_t *chunk; |
| 3048 | |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3049 | /* |
| 3050 | * Avoid moving the allocation if the size class can be left the |
| 3051 | * same. |
| 3052 | */ |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3053 | if (oldsize <= SMALL_MAXCLASS) { |
| 3054 | assert(arena_bin_info[size2index(oldsize)].reg_size == |
| 3055 | oldsize); |
Jason Evans | 4985dc6 | 2016-02-19 19:24:58 -0800 | [diff] [blame] | 3056 | if ((usize_max > SMALL_MAXCLASS || |
| 3057 | size2index(usize_max) != size2index(oldsize)) && |
| 3058 | (size > oldsize || usize_max < oldsize)) |
| 3059 | return (true); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3060 | } else { |
Jason Evans | 4985dc6 | 2016-02-19 19:24:58 -0800 | [diff] [blame] | 3061 | if (usize_max <= SMALL_MAXCLASS) |
| 3062 | return (true); |
| 3063 | if (arena_ralloc_large(ptr, oldsize, usize_min, |
| 3064 | usize_max, zero)) |
| 3065 | return (true); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3066 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3067 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3068 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); |
| 3069 | arena_decay_tick(tsd, extent_node_arena_get(&chunk->node)); |
Jason Evans | 4985dc6 | 2016-02-19 19:24:58 -0800 | [diff] [blame] | 3070 | return (false); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3071 | } else { |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3072 | return (huge_ralloc_no_move(tsd, ptr, oldsize, usize_min, |
| 3073 | usize_max, zero)); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3074 | } |
| 3075 | } |
| 3076 | |
| 3077 | static void * |
| 3078 | arena_ralloc_move_helper(tsd_t *tsd, arena_t *arena, size_t usize, |
| 3079 | size_t alignment, bool zero, tcache_t *tcache) |
| 3080 | { |
| 3081 | |
| 3082 | if (alignment == 0) |
Qi Wang | f4a0f32 | 2015-10-27 15:12:10 -0700 | [diff] [blame] | 3083 | return (arena_malloc(tsd, arena, usize, size2index(usize), zero, |
| 3084 | tcache, true)); |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3085 | usize = sa2u(usize, alignment); |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 3086 | if (unlikely(usize == 0 || usize > HUGE_MAXCLASS)) |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3087 | return (NULL); |
| 3088 | return (ipalloct(tsd, usize, alignment, zero, tcache, arena)); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3089 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3090 | |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3091 | void * |
Jason Evans | 5460aa6 | 2014-09-22 21:09:23 -0700 | [diff] [blame] | 3092 | arena_ralloc(tsd_t *tsd, arena_t *arena, void *ptr, size_t oldsize, size_t size, |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3093 | size_t alignment, bool zero, tcache_t *tcache) |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3094 | { |
| 3095 | void *ret; |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3096 | size_t usize; |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3097 | |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3098 | usize = s2u(size); |
Jason Evans | 0c516a0 | 2016-02-25 15:29:49 -0800 | [diff] [blame] | 3099 | if (unlikely(usize == 0 || size > HUGE_MAXCLASS)) |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3100 | return (NULL); |
| 3101 | |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 3102 | if (likely(usize <= large_maxclass)) { |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3103 | size_t copysize; |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3104 | |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3105 | /* Try to avoid moving the allocation. */ |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3106 | if (!arena_ralloc_no_move(tsd, ptr, oldsize, usize, 0, zero)) |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3107 | return (ptr); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3108 | |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3109 | /* |
| 3110 | * size and oldsize are different enough that we need to move |
| 3111 | * the object. In that case, fall back to allocating new space |
| 3112 | * and copying. |
| 3113 | */ |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3114 | ret = arena_ralloc_move_helper(tsd, arena, usize, alignment, |
| 3115 | zero, tcache); |
| 3116 | if (ret == NULL) |
| 3117 | return (NULL); |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3118 | |
| 3119 | /* |
| 3120 | * Junk/zero-filling were already done by |
| 3121 | * ipalloc()/arena_malloc(). |
| 3122 | */ |
| 3123 | |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3124 | copysize = (usize < oldsize) ? usize : oldsize; |
Jason Evans | 88fef7c | 2015-02-12 14:06:37 -0800 | [diff] [blame] | 3125 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, copysize); |
| 3126 | memcpy(ret, ptr, copysize); |
| 3127 | isqalloc(tsd, ptr, oldsize, tcache); |
| 3128 | } else { |
Jason Evans | 560a4e1 | 2015-09-11 16:18:53 -0700 | [diff] [blame] | 3129 | ret = huge_ralloc(tsd, arena, ptr, oldsize, usize, alignment, |
| 3130 | zero, tcache); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 3131 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3132 | return (ret); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3133 | } |
| 3134 | |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3135 | dss_prec_t |
| 3136 | arena_dss_prec_get(arena_t *arena) |
| 3137 | { |
| 3138 | dss_prec_t ret; |
| 3139 | |
| 3140 | malloc_mutex_lock(&arena->lock); |
| 3141 | ret = arena->dss_prec; |
| 3142 | malloc_mutex_unlock(&arena->lock); |
| 3143 | return (ret); |
| 3144 | } |
| 3145 | |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 3146 | bool |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3147 | arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec) |
| 3148 | { |
| 3149 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 3150 | if (!have_dss) |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 3151 | return (dss_prec != dss_prec_disabled); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3152 | malloc_mutex_lock(&arena->lock); |
| 3153 | arena->dss_prec = dss_prec; |
| 3154 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 3155 | return (false); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3156 | } |
| 3157 | |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 3158 | ssize_t |
| 3159 | arena_lg_dirty_mult_default_get(void) |
| 3160 | { |
| 3161 | |
| 3162 | return ((ssize_t)atomic_read_z((size_t *)&lg_dirty_mult_default)); |
| 3163 | } |
| 3164 | |
| 3165 | bool |
| 3166 | arena_lg_dirty_mult_default_set(ssize_t lg_dirty_mult) |
| 3167 | { |
| 3168 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3169 | if (opt_purge != purge_mode_ratio) |
| 3170 | return (true); |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 3171 | if (!arena_lg_dirty_mult_valid(lg_dirty_mult)) |
| 3172 | return (true); |
| 3173 | atomic_write_z((size_t *)&lg_dirty_mult_default, (size_t)lg_dirty_mult); |
| 3174 | return (false); |
| 3175 | } |
| 3176 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3177 | ssize_t |
| 3178 | arena_decay_time_default_get(void) |
| 3179 | { |
| 3180 | |
| 3181 | return ((ssize_t)atomic_read_z((size_t *)&decay_time_default)); |
| 3182 | } |
| 3183 | |
| 3184 | bool |
| 3185 | arena_decay_time_default_set(ssize_t decay_time) |
| 3186 | { |
| 3187 | |
| 3188 | if (opt_purge != purge_mode_decay) |
| 3189 | return (true); |
| 3190 | if (!arena_decay_time_valid(decay_time)) |
| 3191 | return (true); |
| 3192 | atomic_write_z((size_t *)&decay_time_default, (size_t)decay_time); |
| 3193 | return (false); |
| 3194 | } |
| 3195 | |
Jason Evans | 3c07f80 | 2016-02-27 20:40:13 -0800 | [diff] [blame] | 3196 | static void |
| 3197 | arena_basic_stats_merge_locked(arena_t *arena, unsigned *nthreads, |
| 3198 | const char **dss, ssize_t *lg_dirty_mult, ssize_t *decay_time, |
| 3199 | size_t *nactive, size_t *ndirty) |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3200 | { |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3201 | |
Jason Evans | 3c07f80 | 2016-02-27 20:40:13 -0800 | [diff] [blame] | 3202 | *nthreads += arena_nthreads_get(arena); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3203 | *dss = dss_prec_names[arena->dss_prec]; |
Jason Evans | 562d266 | 2015-03-24 16:36:12 -0700 | [diff] [blame] | 3204 | *lg_dirty_mult = arena->lg_dirty_mult; |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3205 | *decay_time = arena->decay_time; |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3206 | *nactive += arena->nactive; |
| 3207 | *ndirty += arena->ndirty; |
Jason Evans | 3c07f80 | 2016-02-27 20:40:13 -0800 | [diff] [blame] | 3208 | } |
| 3209 | |
| 3210 | void |
| 3211 | arena_basic_stats_merge(arena_t *arena, unsigned *nthreads, const char **dss, |
| 3212 | ssize_t *lg_dirty_mult, ssize_t *decay_time, size_t *nactive, |
| 3213 | size_t *ndirty) |
| 3214 | { |
| 3215 | |
| 3216 | malloc_mutex_lock(&arena->lock); |
| 3217 | arena_basic_stats_merge_locked(arena, nthreads, dss, lg_dirty_mult, |
| 3218 | decay_time, nactive, ndirty); |
| 3219 | malloc_mutex_unlock(&arena->lock); |
| 3220 | } |
| 3221 | |
| 3222 | void |
| 3223 | arena_stats_merge(arena_t *arena, unsigned *nthreads, const char **dss, |
| 3224 | ssize_t *lg_dirty_mult, ssize_t *decay_time, size_t *nactive, |
| 3225 | size_t *ndirty, arena_stats_t *astats, malloc_bin_stats_t *bstats, |
| 3226 | malloc_large_stats_t *lstats, malloc_huge_stats_t *hstats) |
| 3227 | { |
| 3228 | unsigned i; |
| 3229 | |
| 3230 | cassert(config_stats); |
| 3231 | |
| 3232 | malloc_mutex_lock(&arena->lock); |
| 3233 | arena_basic_stats_merge_locked(arena, nthreads, dss, lg_dirty_mult, |
| 3234 | decay_time, nactive, ndirty); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3235 | |
| 3236 | astats->mapped += arena->stats.mapped; |
| 3237 | astats->npurge += arena->stats.npurge; |
| 3238 | astats->nmadvise += arena->stats.nmadvise; |
| 3239 | astats->purged += arena->stats.purged; |
Jason Evans | 4581b97 | 2014-11-27 17:22:36 -0200 | [diff] [blame] | 3240 | astats->metadata_mapped += arena->stats.metadata_mapped; |
| 3241 | astats->metadata_allocated += arena_metadata_allocated_get(arena); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3242 | astats->allocated_large += arena->stats.allocated_large; |
| 3243 | astats->nmalloc_large += arena->stats.nmalloc_large; |
| 3244 | astats->ndalloc_large += arena->stats.ndalloc_large; |
| 3245 | astats->nrequests_large += arena->stats.nrequests_large; |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 3246 | astats->allocated_huge += arena->stats.allocated_huge; |
| 3247 | astats->nmalloc_huge += arena->stats.nmalloc_huge; |
| 3248 | astats->ndalloc_huge += arena->stats.ndalloc_huge; |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3249 | |
| 3250 | for (i = 0; i < nlclasses; i++) { |
| 3251 | lstats[i].nmalloc += arena->stats.lstats[i].nmalloc; |
| 3252 | lstats[i].ndalloc += arena->stats.lstats[i].ndalloc; |
| 3253 | lstats[i].nrequests += arena->stats.lstats[i].nrequests; |
| 3254 | lstats[i].curruns += arena->stats.lstats[i].curruns; |
| 3255 | } |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3256 | |
| 3257 | for (i = 0; i < nhclasses; i++) { |
| 3258 | hstats[i].nmalloc += arena->stats.hstats[i].nmalloc; |
| 3259 | hstats[i].ndalloc += arena->stats.hstats[i].ndalloc; |
| 3260 | hstats[i].curhchunks += arena->stats.hstats[i].curhchunks; |
| 3261 | } |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3262 | malloc_mutex_unlock(&arena->lock); |
| 3263 | |
| 3264 | for (i = 0; i < NBINS; i++) { |
| 3265 | arena_bin_t *bin = &arena->bins[i]; |
| 3266 | |
| 3267 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3268 | bstats[i].nmalloc += bin->stats.nmalloc; |
| 3269 | bstats[i].ndalloc += bin->stats.ndalloc; |
| 3270 | bstats[i].nrequests += bin->stats.nrequests; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3271 | bstats[i].curregs += bin->stats.curregs; |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3272 | if (config_tcache) { |
| 3273 | bstats[i].nfills += bin->stats.nfills; |
| 3274 | bstats[i].nflushes += bin->stats.nflushes; |
| 3275 | } |
| 3276 | bstats[i].nruns += bin->stats.nruns; |
| 3277 | bstats[i].reruns += bin->stats.reruns; |
| 3278 | bstats[i].curruns += bin->stats.curruns; |
| 3279 | malloc_mutex_unlock(&bin->lock); |
| 3280 | } |
| 3281 | } |
| 3282 | |
Jason Evans | 767d850 | 2016-02-24 23:58:10 -0800 | [diff] [blame] | 3283 | unsigned |
| 3284 | arena_nthreads_get(arena_t *arena) |
| 3285 | { |
| 3286 | |
| 3287 | return (atomic_read_u(&arena->nthreads)); |
| 3288 | } |
| 3289 | |
| 3290 | void |
| 3291 | arena_nthreads_inc(arena_t *arena) |
| 3292 | { |
| 3293 | |
| 3294 | atomic_add_u(&arena->nthreads, 1); |
| 3295 | } |
| 3296 | |
| 3297 | void |
| 3298 | arena_nthreads_dec(arena_t *arena) |
| 3299 | { |
| 3300 | |
| 3301 | atomic_sub_u(&arena->nthreads, 1); |
| 3302 | } |
| 3303 | |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3304 | arena_t * |
| 3305 | arena_new(unsigned ind) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3306 | { |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3307 | arena_t *arena; |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3308 | size_t arena_size; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3309 | unsigned i; |
| 3310 | arena_bin_t *bin; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3311 | |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3312 | /* Compute arena size to incorporate sufficient runs_avail elements. */ |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 3313 | arena_size = offsetof(arena_t, runs_avail) + (sizeof(ph_heap_t) * |
Dave Watson | 3812729 | 2016-02-24 20:10:02 -0800 | [diff] [blame] | 3314 | runs_avail_nclasses); |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3315 | /* |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3316 | * Allocate arena, arena->lstats, and arena->hstats contiguously, mainly |
| 3317 | * because there is no way to clean up if base_alloc() OOMs. |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3318 | */ |
| 3319 | if (config_stats) { |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3320 | arena = (arena_t *)base_alloc(CACHELINE_CEILING(arena_size) + |
| 3321 | QUANTUM_CEILING(nlclasses * sizeof(malloc_large_stats_t) + |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3322 | nhclasses) * sizeof(malloc_huge_stats_t)); |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3323 | } else |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3324 | arena = (arena_t *)base_alloc(arena_size); |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3325 | if (arena == NULL) |
| 3326 | return (NULL); |
| 3327 | |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 3328 | arena->ind = ind; |
Jason Evans | 597632b | 2011-03-18 13:41:33 -0700 | [diff] [blame] | 3329 | arena->nthreads = 0; |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 3330 | if (malloc_mutex_init(&arena->lock)) |
| 3331 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3332 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 3333 | if (config_stats) { |
| 3334 | memset(&arena->stats, 0, sizeof(arena_stats_t)); |
Jason Evans | d49cb68 | 2014-11-17 10:31:59 -0800 | [diff] [blame] | 3335 | arena->stats.lstats = (malloc_large_stats_t *)((uintptr_t)arena |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3336 | + CACHELINE_CEILING(arena_size)); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 3337 | memset(arena->stats.lstats, 0, nlclasses * |
| 3338 | sizeof(malloc_large_stats_t)); |
Jason Evans | d49cb68 | 2014-11-17 10:31:59 -0800 | [diff] [blame] | 3339 | arena->stats.hstats = (malloc_huge_stats_t *)((uintptr_t)arena |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3340 | + CACHELINE_CEILING(arena_size) + |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3341 | QUANTUM_CEILING(nlclasses * sizeof(malloc_large_stats_t))); |
| 3342 | memset(arena->stats.hstats, 0, nhclasses * |
| 3343 | sizeof(malloc_huge_stats_t)); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 3344 | if (config_tcache) |
| 3345 | ql_new(&arena->tcache_ql); |
| 3346 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3347 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 3348 | if (config_prof) |
| 3349 | arena->prof_accumbytes = 0; |
Jason Evans | d34f9e7 | 2010-02-11 13:19:21 -0800 | [diff] [blame] | 3350 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 3351 | if (config_cache_oblivious) { |
| 3352 | /* |
| 3353 | * A nondeterministic seed based on the address of arena reduces |
| 3354 | * the likelihood of lockstep non-uniform cache index |
| 3355 | * utilization among identical concurrent processes, but at the |
| 3356 | * cost of test repeatability. For debug builds, instead use a |
| 3357 | * deterministic seed. |
| 3358 | */ |
| 3359 | arena->offset_state = config_debug ? ind : |
| 3360 | (uint64_t)(uintptr_t)arena; |
| 3361 | } |
| 3362 | |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 3363 | arena->dss_prec = chunk_dss_prec_get(); |
| 3364 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3365 | arena->spare = NULL; |
| 3366 | |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 3367 | arena->lg_dirty_mult = arena_lg_dirty_mult_default_get(); |
Jason Evans | 0a9f9a4 | 2015-06-22 18:50:32 -0700 | [diff] [blame] | 3368 | arena->purging = false; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3369 | arena->nactive = 0; |
| 3370 | arena->ndirty = 0; |
| 3371 | |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3372 | for(i = 0; i < runs_avail_nclasses; i++) |
Dave Watson | 4a0dbb5 | 2016-02-29 11:54:42 -0800 | [diff] [blame] | 3373 | ph_new(&arena->runs_avail[i]); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 3374 | qr_new(&arena->runs_dirty, rd_link); |
Jason Evans | 738e089 | 2015-02-18 01:15:50 -0800 | [diff] [blame] | 3375 | qr_new(&arena->chunks_cache, cc_link); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 3376 | |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3377 | if (opt_purge == purge_mode_decay) |
| 3378 | arena_decay_init(arena, arena_decay_time_default_get()); |
| 3379 | |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 3380 | ql_new(&arena->huge); |
| 3381 | if (malloc_mutex_init(&arena->huge_mtx)) |
| 3382 | return (NULL); |
| 3383 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 3384 | extent_tree_szad_new(&arena->chunks_szad_cached); |
| 3385 | extent_tree_ad_new(&arena->chunks_ad_cached); |
| 3386 | extent_tree_szad_new(&arena->chunks_szad_retained); |
| 3387 | extent_tree_ad_new(&arena->chunks_ad_retained); |
Jason Evans | ee41ad4 | 2015-02-15 18:04:46 -0800 | [diff] [blame] | 3388 | if (malloc_mutex_init(&arena->chunks_mtx)) |
| 3389 | return (NULL); |
| 3390 | ql_new(&arena->node_cache); |
| 3391 | if (malloc_mutex_init(&arena->node_cache_mtx)) |
| 3392 | return (NULL); |
| 3393 | |
Jason Evans | b49a334 | 2015-07-28 11:28:19 -0400 | [diff] [blame] | 3394 | arena->chunk_hooks = chunk_hooks_default; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3395 | |
| 3396 | /* Initialize bins. */ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3397 | for (i = 0; i < NBINS; i++) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3398 | bin = &arena->bins[i]; |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 3399 | if (malloc_mutex_init(&bin->lock)) |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3400 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3401 | bin->runcur = NULL; |
Jason Evans | 613cdc8 | 2016-03-08 01:04:48 -0800 | [diff] [blame] | 3402 | ph_new(&bin->runs); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 3403 | if (config_stats) |
| 3404 | memset(&bin->stats, 0, sizeof(malloc_bin_stats_t)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3405 | } |
| 3406 | |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 3407 | return (arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3408 | } |
| 3409 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3410 | /* |
| 3411 | * Calculate bin_info->run_size such that it meets the following constraints: |
| 3412 | * |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 3413 | * *) bin_info->run_size <= arena_maxrun |
Jason Evans | 47e57f9 | 2011-03-22 09:00:56 -0700 | [diff] [blame] | 3414 | * *) bin_info->nregs <= RUN_MAXREGS |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3415 | * |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3416 | * bin_info->nregs and bin_info->reg0_offset are also calculated here, since |
| 3417 | * these settings are all interdependent. |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3418 | */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3419 | static void |
| 3420 | bin_info_run_size_calc(arena_bin_info_t *bin_info) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3421 | { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 3422 | size_t pad_size; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3423 | size_t try_run_size, perfect_run_size, actual_run_size; |
| 3424 | uint32_t try_nregs, perfect_nregs, actual_nregs; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3425 | |
| 3426 | /* |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 3427 | * Determine redzone size based on minimum alignment and minimum |
| 3428 | * redzone size. Add padding to the end of the run if it is needed to |
| 3429 | * align the regions. The padding allows each redzone to be half the |
| 3430 | * minimum alignment; without the padding, each redzone would have to |
| 3431 | * be twice as large in order to maintain alignment. |
| 3432 | */ |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 3433 | if (config_fill && unlikely(opt_redzone)) { |
Jason Evans | 9f4ee60 | 2016-02-24 10:32:45 -0800 | [diff] [blame] | 3434 | size_t align_min = ZU(1) << (ffs_zu(bin_info->reg_size) - 1); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 3435 | if (align_min <= REDZONE_MINSIZE) { |
| 3436 | bin_info->redzone_size = REDZONE_MINSIZE; |
| 3437 | pad_size = 0; |
| 3438 | } else { |
| 3439 | bin_info->redzone_size = align_min >> 1; |
| 3440 | pad_size = bin_info->redzone_size; |
| 3441 | } |
| 3442 | } else { |
| 3443 | bin_info->redzone_size = 0; |
| 3444 | pad_size = 0; |
| 3445 | } |
| 3446 | bin_info->reg_interval = bin_info->reg_size + |
| 3447 | (bin_info->redzone_size << 1); |
| 3448 | |
| 3449 | /* |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3450 | * Compute run size under ideal conditions (no redzones, no limit on run |
| 3451 | * size). |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3452 | */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3453 | try_run_size = PAGE; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3454 | try_nregs = (uint32_t)(try_run_size / bin_info->reg_size); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3455 | do { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3456 | perfect_run_size = try_run_size; |
| 3457 | perfect_nregs = try_nregs; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3458 | |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 3459 | try_run_size += PAGE; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3460 | try_nregs = (uint32_t)(try_run_size / bin_info->reg_size); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3461 | } while (perfect_run_size != perfect_nregs * bin_info->reg_size); |
| 3462 | assert(perfect_nregs <= RUN_MAXREGS); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3463 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3464 | actual_run_size = perfect_run_size; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3465 | actual_nregs = (uint32_t)((actual_run_size - pad_size) / |
| 3466 | bin_info->reg_interval); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3467 | |
| 3468 | /* |
| 3469 | * Redzones can require enough padding that not even a single region can |
| 3470 | * fit within the number of pages that would normally be dedicated to a |
| 3471 | * run for this size class. Increase the run size until at least one |
| 3472 | * region fits. |
| 3473 | */ |
| 3474 | while (actual_nregs == 0) { |
| 3475 | assert(config_fill && unlikely(opt_redzone)); |
| 3476 | |
| 3477 | actual_run_size += PAGE; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3478 | actual_nregs = (uint32_t)((actual_run_size - pad_size) / |
| 3479 | bin_info->reg_interval); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3480 | } |
| 3481 | |
| 3482 | /* |
| 3483 | * Make sure that the run will fit within an arena chunk. |
| 3484 | */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 3485 | while (actual_run_size > arena_maxrun) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3486 | actual_run_size -= PAGE; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3487 | actual_nregs = (uint32_t)((actual_run_size - pad_size) / |
| 3488 | bin_info->reg_interval); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3489 | } |
| 3490 | assert(actual_nregs > 0); |
Jason Evans | 5707d6f | 2015-03-06 17:14:05 -0800 | [diff] [blame] | 3491 | assert(actual_run_size == s2u(actual_run_size)); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3492 | |
| 3493 | /* Copy final settings. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3494 | bin_info->run_size = actual_run_size; |
| 3495 | bin_info->nregs = actual_nregs; |
Jason Evans | 9e1810c | 2016-02-24 12:42:23 -0800 | [diff] [blame] | 3496 | bin_info->reg0_offset = (uint32_t)(actual_run_size - (actual_nregs * |
| 3497 | bin_info->reg_interval) - pad_size + bin_info->redzone_size); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 3498 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 3499 | if (actual_run_size > small_maxrun) |
| 3500 | small_maxrun = actual_run_size; |
| 3501 | |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 3502 | assert(bin_info->reg0_offset - bin_info->redzone_size + (bin_info->nregs |
| 3503 | * bin_info->reg_interval) + pad_size == bin_info->run_size); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3504 | } |
| 3505 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3506 | static void |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3507 | bin_info_init(void) |
| 3508 | { |
| 3509 | arena_bin_info_t *bin_info; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3510 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 3511 | #define BIN_INFO_INIT_bin_yes(index, size) \ |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 3512 | bin_info = &arena_bin_info[index]; \ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3513 | bin_info->reg_size = size; \ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3514 | bin_info_run_size_calc(bin_info); \ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3515 | bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs); |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 3516 | #define BIN_INFO_INIT_bin_no(index, size) |
| 3517 | #define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \ |
| 3518 | BIN_INFO_INIT_bin_##bin(index, (ZU(1)<<lg_grp) + (ZU(ndelta)<<lg_delta)) |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3519 | SIZE_CLASSES |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 3520 | #undef BIN_INFO_INIT_bin_yes |
| 3521 | #undef BIN_INFO_INIT_bin_no |
| 3522 | #undef SC |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 3523 | } |
| 3524 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 3525 | static bool |
| 3526 | small_run_size_init(void) |
| 3527 | { |
| 3528 | |
| 3529 | assert(small_maxrun != 0); |
| 3530 | |
| 3531 | small_run_tab = (bool *)base_alloc(sizeof(bool) * (small_maxrun >> |
| 3532 | LG_PAGE)); |
| 3533 | if (small_run_tab == NULL) |
| 3534 | return (true); |
| 3535 | |
| 3536 | #define TAB_INIT_bin_yes(index, size) { \ |
| 3537 | arena_bin_info_t *bin_info = &arena_bin_info[index]; \ |
| 3538 | small_run_tab[bin_info->run_size >> LG_PAGE] = true; \ |
| 3539 | } |
| 3540 | #define TAB_INIT_bin_no(index, size) |
| 3541 | #define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \ |
| 3542 | TAB_INIT_bin_##bin(index, (ZU(1)<<lg_grp) + (ZU(ndelta)<<lg_delta)) |
| 3543 | SIZE_CLASSES |
| 3544 | #undef TAB_INIT_bin_yes |
| 3545 | #undef TAB_INIT_bin_no |
| 3546 | #undef SC |
| 3547 | |
| 3548 | return (false); |
| 3549 | } |
| 3550 | |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 3551 | static bool |
| 3552 | run_quantize_init(void) |
| 3553 | { |
| 3554 | unsigned i; |
| 3555 | |
| 3556 | run_quantize_max = chunksize + large_pad; |
| 3557 | |
| 3558 | run_quantize_floor_tab = (size_t *)base_alloc(sizeof(size_t) * |
| 3559 | (run_quantize_max >> LG_PAGE)); |
| 3560 | if (run_quantize_floor_tab == NULL) |
| 3561 | return (true); |
| 3562 | |
| 3563 | run_quantize_ceil_tab = (size_t *)base_alloc(sizeof(size_t) * |
| 3564 | (run_quantize_max >> LG_PAGE)); |
| 3565 | if (run_quantize_ceil_tab == NULL) |
| 3566 | return (true); |
| 3567 | |
| 3568 | for (i = 1; i <= run_quantize_max >> LG_PAGE; i++) { |
| 3569 | size_t run_size = i << LG_PAGE; |
| 3570 | |
| 3571 | run_quantize_floor_tab[i-1] = |
| 3572 | run_quantize_floor_compute(run_size); |
| 3573 | run_quantize_ceil_tab[i-1] = |
| 3574 | run_quantize_ceil_compute(run_size); |
| 3575 | } |
| 3576 | |
| 3577 | return (false); |
| 3578 | } |
| 3579 | |
Jason Evans | 8a03cf0 | 2015-05-04 09:58:36 -0700 | [diff] [blame] | 3580 | bool |
Jason Evans | a0bf242 | 2010-01-29 14:30:41 -0800 | [diff] [blame] | 3581 | arena_boot(void) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3582 | { |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 3583 | unsigned i; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3584 | |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 3585 | arena_lg_dirty_mult_default_set(opt_lg_dirty_mult); |
Jason Evans | 243f7a0 | 2016-02-19 20:09:31 -0800 | [diff] [blame] | 3586 | arena_decay_time_default_set(opt_decay_time); |
Jason Evans | 8d6a3e8 | 2015-03-18 18:55:33 -0700 | [diff] [blame] | 3587 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3588 | /* |
| 3589 | * Compute the header size such that it is large enough to contain the |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 3590 | * page map. The page map is biased to omit entries for the header |
| 3591 | * itself, so some iteration is necessary to compute the map bias. |
| 3592 | * |
| 3593 | * 1) Compute safe header_size and map_bias values that include enough |
| 3594 | * space for an unbiased page map. |
| 3595 | * 2) Refine map_bias based on (1) to omit the header pages in the page |
| 3596 | * map. The resulting map_bias may be one too small. |
| 3597 | * 3) Refine map_bias based on (2). The result will be >= the result |
| 3598 | * from (2), and will always be correct. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3599 | */ |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 3600 | map_bias = 0; |
| 3601 | for (i = 0; i < 3; i++) { |
Dmitry-Me | a306a60 | 2015-09-04 13:15:28 +0300 | [diff] [blame] | 3602 | size_t header_size = offsetof(arena_chunk_t, map_bits) + |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 3603 | ((sizeof(arena_chunk_map_bits_t) + |
| 3604 | sizeof(arena_chunk_map_misc_t)) * (chunk_npages-map_bias)); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 3605 | map_bias = (header_size + PAGE_MASK) >> LG_PAGE; |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 3606 | } |
| 3607 | assert(map_bias > 0); |
| 3608 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 3609 | map_misc_offset = offsetof(arena_chunk_t, map_bits) + |
| 3610 | sizeof(arena_chunk_map_bits_t) * (chunk_npages-map_bias); |
| 3611 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 3612 | arena_maxrun = chunksize - (map_bias << LG_PAGE); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 3613 | assert(arena_maxrun > 0); |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 3614 | large_maxclass = index2size(size2index(chunksize)-1); |
| 3615 | if (large_maxclass > arena_maxrun) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 3616 | /* |
| 3617 | * For small chunk sizes it's possible for there to be fewer |
| 3618 | * non-header pages available than are necessary to serve the |
| 3619 | * size classes just below chunksize. |
| 3620 | */ |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 3621 | large_maxclass = arena_maxrun; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 3622 | } |
Jason Evans | 676df88 | 2015-09-11 20:50:20 -0700 | [diff] [blame] | 3623 | assert(large_maxclass > 0); |
| 3624 | nlclasses = size2index(large_maxclass) - size2index(SMALL_MAXCLASS); |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 3625 | nhclasses = NSIZES - nlclasses - NBINS; |
Jason Evans | a0bf242 | 2010-01-29 14:30:41 -0800 | [diff] [blame] | 3626 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 3627 | bin_info_init(); |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 3628 | if (small_run_size_init()) |
| 3629 | return (true); |
| 3630 | if (run_quantize_init()) |
| 3631 | return (true); |
| 3632 | |
Dave Watson | 3417a30 | 2016-02-23 12:06:21 -0800 | [diff] [blame] | 3633 | runs_avail_bias = size2index(PAGE); |
| 3634 | runs_avail_nclasses = size2index(run_quantize_max)+1 - runs_avail_bias; |
| 3635 | |
Jason Evans | 0da8ce1 | 2016-02-22 16:20:56 -0800 | [diff] [blame] | 3636 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 3637 | } |
Jason Evans | 4e2e3dd | 2012-03-13 16:31:41 -0700 | [diff] [blame] | 3638 | |
| 3639 | void |
| 3640 | arena_prefork(arena_t *arena) |
| 3641 | { |
| 3642 | unsigned i; |
| 3643 | |
| 3644 | malloc_mutex_prefork(&arena->lock); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 3645 | malloc_mutex_prefork(&arena->huge_mtx); |
| 3646 | malloc_mutex_prefork(&arena->chunks_mtx); |
| 3647 | malloc_mutex_prefork(&arena->node_cache_mtx); |
Jason Evans | 4e2e3dd | 2012-03-13 16:31:41 -0700 | [diff] [blame] | 3648 | for (i = 0; i < NBINS; i++) |
| 3649 | malloc_mutex_prefork(&arena->bins[i].lock); |
| 3650 | } |
| 3651 | |
| 3652 | void |
| 3653 | arena_postfork_parent(arena_t *arena) |
| 3654 | { |
| 3655 | unsigned i; |
| 3656 | |
| 3657 | for (i = 0; i < NBINS; i++) |
| 3658 | malloc_mutex_postfork_parent(&arena->bins[i].lock); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 3659 | malloc_mutex_postfork_parent(&arena->node_cache_mtx); |
| 3660 | malloc_mutex_postfork_parent(&arena->chunks_mtx); |
| 3661 | malloc_mutex_postfork_parent(&arena->huge_mtx); |
Jason Evans | 4e2e3dd | 2012-03-13 16:31:41 -0700 | [diff] [blame] | 3662 | malloc_mutex_postfork_parent(&arena->lock); |
| 3663 | } |
| 3664 | |
| 3665 | void |
| 3666 | arena_postfork_child(arena_t *arena) |
| 3667 | { |
| 3668 | unsigned i; |
| 3669 | |
| 3670 | for (i = 0; i < NBINS; i++) |
| 3671 | malloc_mutex_postfork_child(&arena->bins[i].lock); |
Jason Evans | cbf3a6d | 2015-02-11 12:24:27 -0800 | [diff] [blame] | 3672 | malloc_mutex_postfork_child(&arena->node_cache_mtx); |
| 3673 | malloc_mutex_postfork_child(&arena->chunks_mtx); |
| 3674 | malloc_mutex_postfork_child(&arena->huge_mtx); |
Jason Evans | 4e2e3dd | 2012-03-13 16:31:41 -0700 | [diff] [blame] | 3675 | malloc_mutex_postfork_child(&arena->lock); |
| 3676 | } |