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 | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 7 | ssize_t opt_lg_dirty_mult = LG_DIRTY_MULT_DEFAULT; |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 8 | arena_bin_info_t arena_bin_info[NBINS]; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 9 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 10 | size_t map_bias; |
| 11 | size_t map_misc_offset; |
| 12 | size_t arena_maxrun; /* Max run size for arenas. */ |
| 13 | size_t arena_maxclass; /* Max size class for arenas. */ |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 14 | unsigned nlclasses; /* Number of large size classes. */ |
| 15 | unsigned nhclasses; /* Number of huge size classes. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 16 | |
| 17 | /******************************************************************************/ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 18 | /* |
| 19 | * Function prototypes for static functions that are referenced prior to |
| 20 | * definition. |
| 21 | */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 22 | |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 23 | static void arena_purge(arena_t *arena, bool all); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 24 | static void arena_run_dalloc(arena_t *arena, arena_run_t *run, bool dirty, |
| 25 | bool cleaned); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 26 | static void arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, |
| 27 | arena_run_t *run, arena_bin_t *bin); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 28 | static void arena_bin_lower_run(arena_t *arena, arena_chunk_t *chunk, |
| 29 | arena_run_t *run, arena_bin_t *bin); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 30 | |
| 31 | /******************************************************************************/ |
| 32 | |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 33 | JEMALLOC_INLINE_C size_t |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 34 | arena_miscelm_to_bits(arena_chunk_map_misc_t *miscelm) |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 35 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 36 | arena_chunk_t *chunk = CHUNK_ADDR2BASE(miscelm); |
| 37 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 38 | |
Jason Evans | e12eaf9 | 2014-12-08 14:40:14 -0800 | [diff] [blame^] | 39 | return (arena_mapbits_get(chunk, pageind)); |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 40 | } |
| 41 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 42 | JEMALLOC_INLINE_C int |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 43 | arena_run_comp(arena_chunk_map_misc_t *a, arena_chunk_map_misc_t *b) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 44 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 45 | uintptr_t a_miscelm = (uintptr_t)a; |
| 46 | uintptr_t b_miscelm = (uintptr_t)b; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 47 | |
| 48 | assert(a != NULL); |
| 49 | assert(b != NULL); |
| 50 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 51 | return ((a_miscelm > b_miscelm) - (a_miscelm < b_miscelm)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 52 | } |
| 53 | |
Jason Evans | f3ff752 | 2010-02-28 15:00:18 -0800 | [diff] [blame] | 54 | /* Generate red-black tree functions. */ |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 55 | rb_gen(static UNUSED, arena_run_tree_, arena_run_tree_t, arena_chunk_map_misc_t, |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 56 | rb_link, arena_run_comp) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 57 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 58 | JEMALLOC_INLINE_C int |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 59 | arena_avail_comp(arena_chunk_map_misc_t *a, arena_chunk_map_misc_t *b) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 60 | { |
| 61 | int ret; |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 62 | size_t a_size; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 63 | size_t b_size = arena_miscelm_to_bits(b) & ~PAGE_MASK; |
| 64 | uintptr_t a_miscelm = (uintptr_t)a; |
| 65 | uintptr_t b_miscelm = (uintptr_t)b; |
Ben Maurer | f9ff603 | 2014-04-06 13:24:16 -0700 | [diff] [blame] | 66 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 67 | if (a_miscelm & CHUNK_MAP_KEY) |
| 68 | a_size = a_miscelm & ~PAGE_MASK; |
| 69 | else |
| 70 | a_size = arena_miscelm_to_bits(a) & ~PAGE_MASK; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 71 | |
| 72 | ret = (a_size > b_size) - (a_size < b_size); |
Qinfan Wu | 55c9aa1 | 2014-08-06 16:10:08 -0700 | [diff] [blame] | 73 | if (ret == 0) { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 74 | if (!(a_miscelm & CHUNK_MAP_KEY)) |
| 75 | ret = (a_miscelm > b_miscelm) - (a_miscelm < b_miscelm); |
Qinfan Wu | ea73eb8 | 2014-08-06 16:43:01 -0700 | [diff] [blame] | 76 | else { |
| 77 | /* |
| 78 | * Treat keys as if they are lower than anything else. |
| 79 | */ |
Qinfan Wu | 55c9aa1 | 2014-08-06 16:10:08 -0700 | [diff] [blame] | 80 | ret = -1; |
Qinfan Wu | ea73eb8 | 2014-08-06 16:43:01 -0700 | [diff] [blame] | 81 | } |
Qinfan Wu | 55c9aa1 | 2014-08-06 16:10:08 -0700 | [diff] [blame] | 82 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 83 | |
| 84 | return (ret); |
| 85 | } |
| 86 | |
Jason Evans | f3ff752 | 2010-02-28 15:00:18 -0800 | [diff] [blame] | 87 | /* Generate red-black tree functions. */ |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 88 | rb_gen(static UNUSED, arena_avail_tree_, arena_avail_tree_t, |
| 89 | arena_chunk_map_misc_t, rb_link, arena_avail_comp) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 90 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 91 | static void |
| 92 | 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] | 93 | size_t npages) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 94 | { |
| 95 | |
| 96 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 97 | LG_PAGE)); |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 98 | arena_avail_tree_insert(&arena->runs_avail, arena_miscelm_get(chunk, |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 99 | pageind)); |
| 100 | } |
| 101 | |
| 102 | static void |
| 103 | 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] | 104 | size_t npages) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 105 | { |
| 106 | |
| 107 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 108 | LG_PAGE)); |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 109 | arena_avail_tree_remove(&arena->runs_avail, arena_miscelm_get(chunk, |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 110 | pageind)); |
| 111 | } |
| 112 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 113 | static void |
| 114 | arena_dirty_insert(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
| 115 | size_t npages) |
| 116 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 117 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get(chunk, pageind); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 118 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 119 | LG_PAGE)); |
| 120 | assert(arena_mapbits_dirty_get(chunk, pageind) == CHUNK_MAP_DIRTY); |
| 121 | assert(arena_mapbits_dirty_get(chunk, pageind+npages-1) == |
| 122 | CHUNK_MAP_DIRTY); |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 123 | ql_elm_new(miscelm, dr_link); |
| 124 | ql_tail_insert(&arena->runs_dirty, miscelm, dr_link); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 125 | arena->ndirty += npages; |
| 126 | } |
| 127 | |
| 128 | static void |
| 129 | arena_dirty_remove(arena_t *arena, arena_chunk_t *chunk, size_t pageind, |
| 130 | size_t npages) |
| 131 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 132 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get(chunk, pageind); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 133 | assert(npages == (arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 134 | LG_PAGE)); |
| 135 | assert(arena_mapbits_dirty_get(chunk, pageind) == CHUNK_MAP_DIRTY); |
| 136 | assert(arena_mapbits_dirty_get(chunk, pageind+npages-1) == |
| 137 | CHUNK_MAP_DIRTY); |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 138 | ql_remove(&arena->runs_dirty, miscelm, dr_link); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 139 | arena->ndirty -= npages; |
| 140 | } |
| 141 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 142 | JEMALLOC_INLINE_C void * |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 143 | 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] | 144 | { |
| 145 | void *ret; |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 146 | unsigned regind; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 147 | arena_chunk_map_misc_t *miscelm; |
| 148 | void *rpages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 149 | |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 150 | assert(run->nfree > 0); |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 151 | assert(!bitmap_full(run->bitmap, &bin_info->bitmap_info)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 152 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 153 | regind = bitmap_sfu(run->bitmap, &bin_info->bitmap_info); |
| 154 | miscelm = arena_run_to_miscelm(run); |
| 155 | rpages = arena_miscelm_to_rpages(miscelm); |
| 156 | ret = (void *)((uintptr_t)rpages + (uintptr_t)bin_info->reg0_offset + |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 157 | (uintptr_t)(bin_info->reg_interval * regind)); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 158 | run->nfree--; |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 159 | return (ret); |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 160 | } |
| 161 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 162 | JEMALLOC_INLINE_C void |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 163 | arena_run_reg_dalloc(arena_run_t *run, void *ptr) |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 164 | { |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 165 | arena_chunk_t *chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 166 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
| 167 | size_t mapbits = arena_mapbits_get(chunk, pageind); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 168 | index_t binind = arena_ptr_small_binind_get(ptr, mapbits); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 169 | arena_bin_info_t *bin_info = &arena_bin_info[binind]; |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 170 | unsigned regind = arena_run_regind(run, bin_info, ptr); |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 171 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 172 | assert(run->nfree < bin_info->nregs); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 173 | /* Freeing an interior pointer can cause assertion failure. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 174 | assert(((uintptr_t)ptr - |
| 175 | ((uintptr_t)arena_miscelm_to_rpages(arena_run_to_miscelm(run)) + |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 176 | (uintptr_t)bin_info->reg0_offset)) % |
| 177 | (uintptr_t)bin_info->reg_interval == 0); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 178 | assert((uintptr_t)ptr >= |
| 179 | (uintptr_t)arena_miscelm_to_rpages(arena_run_to_miscelm(run)) + |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 180 | (uintptr_t)bin_info->reg0_offset); |
Jason Evans | 84c8eef | 2011-03-16 10:30:13 -0700 | [diff] [blame] | 181 | /* Freeing an unallocated pointer can cause assertion failure. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 182 | assert(bitmap_get(run->bitmap, &bin_info->bitmap_info, regind)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 183 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 184 | bitmap_unset(run->bitmap, &bin_info->bitmap_info, regind); |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 185 | run->nfree++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 186 | } |
| 187 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 188 | JEMALLOC_INLINE_C void |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 189 | arena_run_zero(arena_chunk_t *chunk, size_t run_ind, size_t npages) |
| 190 | { |
| 191 | |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 192 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
| 193 | (run_ind << LG_PAGE)), (npages << LG_PAGE)); |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 194 | memset((void *)((uintptr_t)chunk + (run_ind << LG_PAGE)), 0, |
| 195 | (npages << LG_PAGE)); |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 196 | } |
| 197 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 198 | JEMALLOC_INLINE_C void |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 199 | arena_run_page_mark_zeroed(arena_chunk_t *chunk, size_t run_ind) |
| 200 | { |
| 201 | |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 202 | JEMALLOC_VALGRIND_MAKE_MEM_DEFINED((void *)((uintptr_t)chunk + (run_ind |
| 203 | << LG_PAGE)), PAGE); |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 204 | } |
| 205 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 206 | JEMALLOC_INLINE_C void |
Jason Evans | 3806748 | 2013-01-21 20:04:42 -0800 | [diff] [blame] | 207 | 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] | 208 | { |
Jason Evans | d4bab21 | 2010-10-24 20:08:37 -0700 | [diff] [blame] | 209 | size_t i; |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 210 | 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] | 211 | |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 212 | arena_run_page_mark_zeroed(chunk, run_ind); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 213 | for (i = 0; i < PAGE / sizeof(size_t); i++) |
Jason Evans | 21fb95b | 2010-10-18 17:45:40 -0700 | [diff] [blame] | 214 | assert(p[i] == 0); |
| 215 | } |
Jason Evans | 21fb95b | 2010-10-18 17:45:40 -0700 | [diff] [blame] | 216 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 217 | static void |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 218 | arena_cactive_update(arena_t *arena, size_t add_pages, size_t sub_pages) |
| 219 | { |
| 220 | |
| 221 | if (config_stats) { |
Jason Evans | 1522937 | 2014-08-06 23:38:39 -0700 | [diff] [blame] | 222 | ssize_t cactive_diff = CHUNK_CEILING((arena->nactive + add_pages |
| 223 | - sub_pages) << LG_PAGE) - CHUNK_CEILING(arena->nactive << |
| 224 | LG_PAGE); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 225 | if (cactive_diff != 0) |
| 226 | stats_cactive_add(cactive_diff); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | static void |
| 231 | arena_run_split_remove(arena_t *arena, arena_chunk_t *chunk, size_t run_ind, |
| 232 | size_t flag_dirty, size_t need_pages) |
| 233 | { |
| 234 | size_t total_pages, rem_pages; |
| 235 | |
| 236 | total_pages = arena_mapbits_unallocated_size_get(chunk, run_ind) >> |
| 237 | LG_PAGE; |
| 238 | assert(arena_mapbits_dirty_get(chunk, run_ind+total_pages-1) == |
| 239 | flag_dirty); |
| 240 | assert(need_pages <= total_pages); |
| 241 | rem_pages = total_pages - need_pages; |
| 242 | |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 243 | arena_avail_remove(arena, chunk, run_ind, total_pages); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 244 | if (flag_dirty != 0) |
| 245 | arena_dirty_remove(arena, chunk, run_ind, total_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 246 | arena_cactive_update(arena, need_pages, 0); |
| 247 | arena->nactive += need_pages; |
| 248 | |
| 249 | /* Keep track of trailing unused pages for later use. */ |
| 250 | if (rem_pages > 0) { |
| 251 | if (flag_dirty != 0) { |
| 252 | arena_mapbits_unallocated_set(chunk, |
| 253 | run_ind+need_pages, (rem_pages << LG_PAGE), |
| 254 | flag_dirty); |
| 255 | arena_mapbits_unallocated_set(chunk, |
| 256 | run_ind+total_pages-1, (rem_pages << LG_PAGE), |
| 257 | flag_dirty); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 258 | arena_dirty_insert(arena, chunk, run_ind+need_pages, |
| 259 | rem_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 260 | } else { |
| 261 | arena_mapbits_unallocated_set(chunk, run_ind+need_pages, |
| 262 | (rem_pages << LG_PAGE), |
| 263 | arena_mapbits_unzeroed_get(chunk, |
| 264 | run_ind+need_pages)); |
| 265 | arena_mapbits_unallocated_set(chunk, |
| 266 | run_ind+total_pages-1, (rem_pages << LG_PAGE), |
| 267 | arena_mapbits_unzeroed_get(chunk, |
| 268 | run_ind+total_pages-1)); |
| 269 | } |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 270 | arena_avail_insert(arena, chunk, run_ind+need_pages, rem_pages); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | |
| 274 | static void |
| 275 | arena_run_split_large_helper(arena_t *arena, arena_run_t *run, size_t size, |
| 276 | bool remove, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 277 | { |
| 278 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 279 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 280 | size_t flag_dirty, run_ind, need_pages, i; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 281 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 282 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 283 | miscelm = arena_run_to_miscelm(run); |
| 284 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 285 | flag_dirty = arena_mapbits_dirty_get(chunk, run_ind); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 286 | need_pages = (size >> LG_PAGE); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 287 | assert(need_pages > 0); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 288 | |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 289 | if (remove) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 290 | arena_run_split_remove(arena, chunk, run_ind, flag_dirty, |
| 291 | need_pages); |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 294 | if (zero) { |
| 295 | if (flag_dirty == 0) { |
| 296 | /* |
| 297 | * The run is clean, so some pages may be zeroed (i.e. |
| 298 | * never before touched). |
| 299 | */ |
| 300 | for (i = 0; i < need_pages; i++) { |
| 301 | if (arena_mapbits_unzeroed_get(chunk, run_ind+i) |
| 302 | != 0) |
| 303 | arena_run_zero(chunk, run_ind+i, 1); |
| 304 | else if (config_debug) { |
| 305 | arena_run_page_validate_zeroed(chunk, |
| 306 | run_ind+i); |
| 307 | } else { |
| 308 | arena_run_page_mark_zeroed(chunk, |
| 309 | run_ind+i); |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 310 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 311 | } |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 312 | } else { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 313 | /* The run is dirty, so all pages must be zeroed. */ |
| 314 | arena_run_zero(chunk, run_ind, need_pages); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 315 | } |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 316 | } else { |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 317 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
Jason Evans | dda90f5 | 2013-10-19 23:48:40 -0700 | [diff] [blame] | 318 | (run_ind << LG_PAGE)), (need_pages << LG_PAGE)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 319 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 320 | |
| 321 | /* |
| 322 | * Set the last element first, in case the run only contains one page |
| 323 | * (i.e. both statements set the same element). |
| 324 | */ |
| 325 | arena_mapbits_large_set(chunk, run_ind+need_pages-1, 0, flag_dirty); |
| 326 | arena_mapbits_large_set(chunk, run_ind, size, flag_dirty); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 327 | } |
| 328 | |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 329 | static void |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 330 | 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] | 331 | { |
| 332 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 333 | arena_run_split_large_helper(arena, run, size, true, zero); |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | static void |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 337 | 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] | 338 | { |
| 339 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 340 | arena_run_split_large_helper(arena, run, size, false, zero); |
| 341 | } |
| 342 | |
| 343 | static void |
| 344 | arena_run_split_small(arena_t *arena, arena_run_t *run, size_t size, |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 345 | index_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 346 | { |
| 347 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 348 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 349 | size_t flag_dirty, run_ind, need_pages, i; |
| 350 | |
| 351 | assert(binind != BININD_INVALID); |
| 352 | |
| 353 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 354 | miscelm = arena_run_to_miscelm(run); |
| 355 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 356 | flag_dirty = arena_mapbits_dirty_get(chunk, run_ind); |
| 357 | need_pages = (size >> LG_PAGE); |
| 358 | assert(need_pages > 0); |
| 359 | |
| 360 | arena_run_split_remove(arena, chunk, run_ind, flag_dirty, need_pages); |
| 361 | |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 362 | for (i = 0; i < need_pages; i++) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 363 | arena_mapbits_small_set(chunk, run_ind+i, i, binind, 0); |
| 364 | if (config_debug && flag_dirty == 0 && |
| 365 | arena_mapbits_unzeroed_get(chunk, run_ind+i) == 0) |
| 366 | arena_run_page_validate_zeroed(chunk, run_ind+i); |
| 367 | } |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 368 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED((void *)((uintptr_t)chunk + |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 369 | (run_ind << LG_PAGE)), (need_pages << LG_PAGE)); |
| 370 | } |
| 371 | |
| 372 | static arena_chunk_t * |
| 373 | arena_chunk_init_spare(arena_t *arena) |
| 374 | { |
| 375 | arena_chunk_t *chunk; |
| 376 | |
| 377 | assert(arena->spare != NULL); |
| 378 | |
| 379 | chunk = arena->spare; |
| 380 | arena->spare = NULL; |
| 381 | |
| 382 | assert(arena_mapbits_allocated_get(chunk, map_bias) == 0); |
| 383 | assert(arena_mapbits_allocated_get(chunk, chunk_npages-1) == 0); |
| 384 | assert(arena_mapbits_unallocated_size_get(chunk, map_bias) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 385 | arena_maxrun); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 386 | assert(arena_mapbits_unallocated_size_get(chunk, chunk_npages-1) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 387 | arena_maxrun); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 388 | assert(arena_mapbits_dirty_get(chunk, map_bias) == |
| 389 | arena_mapbits_dirty_get(chunk, chunk_npages-1)); |
| 390 | |
| 391 | return (chunk); |
| 392 | } |
| 393 | |
| 394 | static arena_chunk_t * |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 395 | arena_chunk_alloc_internal(arena_t *arena, size_t size, size_t alignment, |
| 396 | bool *zero) |
| 397 | { |
| 398 | arena_chunk_t *chunk; |
| 399 | chunk_alloc_t *chunk_alloc; |
| 400 | chunk_dalloc_t *chunk_dalloc; |
| 401 | |
| 402 | chunk_alloc = arena->chunk_alloc; |
| 403 | chunk_dalloc = arena->chunk_dalloc; |
| 404 | malloc_mutex_unlock(&arena->lock); |
| 405 | chunk = (arena_chunk_t *)chunk_alloc_arena(chunk_alloc, chunk_dalloc, |
Daniel Micay | a95018e | 2014-10-04 01:39:32 -0400 | [diff] [blame] | 406 | arena->ind, NULL, size, alignment, zero); |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 407 | malloc_mutex_lock(&arena->lock); |
| 408 | if (config_stats && chunk != NULL) |
| 409 | arena->stats.mapped += chunksize; |
| 410 | |
| 411 | return (chunk); |
| 412 | } |
| 413 | |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 414 | static arena_chunk_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 415 | arena_chunk_init_hard(arena_t *arena) |
| 416 | { |
| 417 | arena_chunk_t *chunk; |
| 418 | bool zero; |
| 419 | size_t unzeroed, i; |
| 420 | |
| 421 | assert(arena->spare == NULL); |
| 422 | |
| 423 | zero = false; |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 424 | chunk = arena_chunk_alloc_internal(arena, chunksize, chunksize, &zero); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 425 | if (chunk == NULL) |
| 426 | return (NULL); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 427 | |
| 428 | chunk->arena = arena; |
| 429 | |
| 430 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 431 | * Initialize the map to contain one maximal free untouched run. Mark |
| 432 | * the pages as zeroed iff chunk_alloc() returned a zeroed chunk. |
| 433 | */ |
| 434 | unzeroed = zero ? 0 : CHUNK_MAP_UNZEROED; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 435 | arena_mapbits_unallocated_set(chunk, map_bias, arena_maxrun, unzeroed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 436 | /* |
| 437 | * There is no need to initialize the internal page map entries unless |
| 438 | * the chunk is not zeroed. |
| 439 | */ |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 440 | if (!zero) { |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 441 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED( |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 442 | (void *)arena_bitselm_get(chunk, map_bias+1), |
| 443 | (size_t)((uintptr_t) arena_bitselm_get(chunk, |
| 444 | chunk_npages-1) - (uintptr_t)arena_bitselm_get(chunk, |
| 445 | map_bias+1))); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 446 | for (i = map_bias+1; i < chunk_npages-1; i++) |
| 447 | arena_mapbits_unzeroed_set(chunk, i, unzeroed); |
| 448 | } else { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 449 | JEMALLOC_VALGRIND_MAKE_MEM_DEFINED((void |
| 450 | *)arena_bitselm_get(chunk, map_bias+1), (size_t)((uintptr_t) |
| 451 | arena_bitselm_get(chunk, chunk_npages-1) - |
| 452 | (uintptr_t)arena_bitselm_get(chunk, map_bias+1))); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 453 | if (config_debug) { |
| 454 | for (i = map_bias+1; i < chunk_npages-1; i++) { |
| 455 | assert(arena_mapbits_unzeroed_get(chunk, i) == |
| 456 | unzeroed); |
| 457 | } |
| 458 | } |
| 459 | } |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 460 | arena_mapbits_unallocated_set(chunk, chunk_npages-1, arena_maxrun, |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 461 | unzeroed); |
| 462 | |
| 463 | return (chunk); |
Jason Evans | c368f8c | 2013-10-29 18:17:42 -0700 | [diff] [blame] | 464 | } |
| 465 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 466 | static arena_chunk_t * |
| 467 | arena_chunk_alloc(arena_t *arena) |
| 468 | { |
| 469 | arena_chunk_t *chunk; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 470 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 471 | if (arena->spare != NULL) |
| 472 | chunk = arena_chunk_init_spare(arena); |
Chris Pride | 20a8c78 | 2014-03-25 22:36:05 -0700 | [diff] [blame] | 473 | else { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 474 | chunk = arena_chunk_init_hard(arena); |
Chris Pride | 20a8c78 | 2014-03-25 22:36:05 -0700 | [diff] [blame] | 475 | if (chunk == NULL) |
| 476 | return (NULL); |
| 477 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 478 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 479 | /* Insert the run into the runs_avail tree. */ |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 480 | arena_avail_insert(arena, chunk, map_bias, chunk_npages-map_bias); |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 481 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 482 | return (chunk); |
| 483 | } |
| 484 | |
| 485 | static void |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 486 | arena_chunk_dalloc(arena_t *arena, arena_chunk_t *chunk) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 487 | { |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 488 | |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 489 | assert(arena_mapbits_allocated_get(chunk, map_bias) == 0); |
| 490 | assert(arena_mapbits_allocated_get(chunk, chunk_npages-1) == 0); |
| 491 | assert(arena_mapbits_unallocated_size_get(chunk, map_bias) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 492 | arena_maxrun); |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 493 | assert(arena_mapbits_unallocated_size_get(chunk, chunk_npages-1) == |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 494 | arena_maxrun); |
Jason Evans | 30fe12b | 2012-05-10 17:09:17 -0700 | [diff] [blame] | 495 | assert(arena_mapbits_dirty_get(chunk, map_bias) == |
| 496 | arena_mapbits_dirty_get(chunk, chunk_npages-1)); |
| 497 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 498 | /* |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 499 | * Remove run from the runs_avail tree, so that the arena does not use |
| 500 | * it. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 501 | */ |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 502 | arena_avail_remove(arena, chunk, map_bias, chunk_npages-map_bias); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 503 | |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 504 | if (arena->spare != NULL) { |
| 505 | arena_chunk_t *spare = arena->spare; |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 506 | chunk_dalloc_t *chunk_dalloc; |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 507 | |
| 508 | arena->spare = chunk; |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 509 | if (arena_mapbits_dirty_get(spare, map_bias) != 0) { |
| 510 | arena_dirty_remove(arena, spare, map_bias, |
| 511 | chunk_npages-map_bias); |
| 512 | } |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 513 | chunk_dalloc = arena->chunk_dalloc; |
| 514 | malloc_mutex_unlock(&arena->lock); |
| 515 | chunk_dalloc((void *)spare, chunksize, arena->ind); |
| 516 | malloc_mutex_lock(&arena->lock); |
| 517 | if (config_stats) |
| 518 | arena->stats.mapped -= chunksize; |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 519 | } else |
| 520 | arena->spare = chunk; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 521 | } |
| 522 | |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 523 | static void |
| 524 | arena_huge_malloc_stats_update(arena_t *arena, size_t usize) |
| 525 | { |
| 526 | index_t index = size2index(usize) - nlclasses - NBINS; |
| 527 | |
| 528 | cassert(config_stats); |
| 529 | |
| 530 | arena->stats.nmalloc_huge++; |
| 531 | arena->stats.allocated_huge += usize; |
| 532 | arena->stats.hstats[index].nmalloc++; |
| 533 | arena->stats.hstats[index].curhchunks++; |
| 534 | } |
| 535 | |
| 536 | static void |
| 537 | arena_huge_malloc_stats_update_undo(arena_t *arena, size_t usize) |
| 538 | { |
| 539 | index_t index = size2index(usize) - nlclasses - NBINS; |
| 540 | |
| 541 | cassert(config_stats); |
| 542 | |
| 543 | arena->stats.nmalloc_huge--; |
| 544 | arena->stats.allocated_huge -= usize; |
| 545 | arena->stats.hstats[index].nmalloc--; |
| 546 | arena->stats.hstats[index].curhchunks--; |
| 547 | } |
| 548 | |
| 549 | static void |
| 550 | arena_huge_dalloc_stats_update(arena_t *arena, size_t usize) |
| 551 | { |
| 552 | index_t index = size2index(usize) - nlclasses - NBINS; |
| 553 | |
| 554 | cassert(config_stats); |
| 555 | |
| 556 | arena->stats.ndalloc_huge++; |
| 557 | arena->stats.allocated_huge -= usize; |
| 558 | arena->stats.hstats[index].ndalloc++; |
| 559 | arena->stats.hstats[index].curhchunks--; |
| 560 | } |
| 561 | |
| 562 | static void |
| 563 | arena_huge_dalloc_stats_update_undo(arena_t *arena, size_t usize) |
| 564 | { |
| 565 | index_t index = size2index(usize) - nlclasses - NBINS; |
| 566 | |
| 567 | cassert(config_stats); |
| 568 | |
| 569 | arena->stats.ndalloc_huge--; |
| 570 | arena->stats.allocated_huge += usize; |
| 571 | arena->stats.hstats[index].ndalloc--; |
| 572 | arena->stats.hstats[index].curhchunks++; |
| 573 | } |
| 574 | |
| 575 | static void |
| 576 | arena_huge_ralloc_stats_update(arena_t *arena, size_t oldsize, size_t usize) |
| 577 | { |
| 578 | |
| 579 | arena_huge_dalloc_stats_update(arena, oldsize); |
| 580 | arena_huge_malloc_stats_update(arena, usize); |
| 581 | } |
| 582 | |
| 583 | static void |
| 584 | arena_huge_ralloc_stats_update_undo(arena_t *arena, size_t oldsize, |
| 585 | size_t usize) |
| 586 | { |
| 587 | |
| 588 | arena_huge_dalloc_stats_update_undo(arena, oldsize); |
| 589 | arena_huge_malloc_stats_update_undo(arena, usize); |
| 590 | } |
| 591 | |
| 592 | void * |
| 593 | arena_chunk_alloc_huge(arena_t *arena, size_t usize, size_t alignment, |
| 594 | bool *zero) |
| 595 | { |
| 596 | void *ret; |
| 597 | chunk_alloc_t *chunk_alloc; |
| 598 | chunk_dalloc_t *chunk_dalloc; |
| 599 | size_t csize = CHUNK_CEILING(usize); |
| 600 | |
| 601 | malloc_mutex_lock(&arena->lock); |
| 602 | chunk_alloc = arena->chunk_alloc; |
| 603 | chunk_dalloc = arena->chunk_dalloc; |
| 604 | if (config_stats) { |
| 605 | /* Optimistically update stats prior to unlocking. */ |
| 606 | arena_huge_malloc_stats_update(arena, usize); |
| 607 | arena->stats.mapped += usize; |
| 608 | } |
| 609 | arena->nactive += (usize >> LG_PAGE); |
| 610 | malloc_mutex_unlock(&arena->lock); |
| 611 | |
| 612 | ret = chunk_alloc_arena(chunk_alloc, chunk_dalloc, arena->ind, NULL, |
| 613 | csize, alignment, zero); |
| 614 | if (ret == NULL) { |
| 615 | /* Revert optimistic stats updates. */ |
| 616 | malloc_mutex_lock(&arena->lock); |
| 617 | if (config_stats) { |
| 618 | arena_huge_malloc_stats_update_undo(arena, usize); |
| 619 | arena->stats.mapped -= usize; |
| 620 | } |
| 621 | arena->nactive -= (usize >> LG_PAGE); |
| 622 | malloc_mutex_unlock(&arena->lock); |
| 623 | return (NULL); |
| 624 | } |
| 625 | |
| 626 | if (config_stats) |
| 627 | stats_cactive_add(usize); |
| 628 | |
| 629 | return (ret); |
| 630 | } |
| 631 | |
| 632 | void |
| 633 | arena_chunk_dalloc_huge(arena_t *arena, void *chunk, size_t usize) |
| 634 | { |
| 635 | chunk_dalloc_t *chunk_dalloc; |
| 636 | |
| 637 | malloc_mutex_lock(&arena->lock); |
| 638 | chunk_dalloc = arena->chunk_dalloc; |
| 639 | if (config_stats) { |
| 640 | arena_huge_dalloc_stats_update(arena, usize); |
| 641 | arena->stats.mapped -= usize; |
| 642 | stats_cactive_sub(usize); |
| 643 | } |
| 644 | arena->nactive -= (usize >> LG_PAGE); |
| 645 | malloc_mutex_unlock(&arena->lock); |
| 646 | chunk_dalloc(chunk, CHUNK_CEILING(usize), arena->ind); |
| 647 | } |
| 648 | |
| 649 | void |
| 650 | arena_chunk_ralloc_huge_similar(arena_t *arena, void *chunk, size_t oldsize, |
| 651 | size_t usize) |
| 652 | { |
| 653 | |
| 654 | assert(CHUNK_CEILING(oldsize) == CHUNK_CEILING(usize)); |
| 655 | assert(oldsize != usize); |
| 656 | |
| 657 | malloc_mutex_lock(&arena->lock); |
| 658 | if (config_stats) |
| 659 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
| 660 | if (oldsize < usize) { |
| 661 | size_t udiff = usize - oldsize; |
| 662 | arena->nactive += udiff >> LG_PAGE; |
| 663 | if (config_stats) |
| 664 | stats_cactive_add(udiff); |
| 665 | } else { |
| 666 | size_t udiff = oldsize - usize; |
| 667 | arena->nactive -= udiff >> LG_PAGE; |
| 668 | if (config_stats) |
| 669 | stats_cactive_sub(udiff); |
| 670 | } |
| 671 | malloc_mutex_unlock(&arena->lock); |
| 672 | } |
| 673 | |
| 674 | void |
| 675 | arena_chunk_ralloc_huge_shrink(arena_t *arena, void *chunk, size_t oldsize, |
| 676 | size_t usize) |
| 677 | { |
| 678 | chunk_dalloc_t *chunk_dalloc; |
| 679 | size_t udiff = oldsize - usize; |
| 680 | size_t cdiff = CHUNK_CEILING(oldsize) - CHUNK_CEILING(usize); |
| 681 | |
| 682 | malloc_mutex_lock(&arena->lock); |
| 683 | chunk_dalloc = arena->chunk_dalloc; |
| 684 | if (config_stats) { |
| 685 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
| 686 | if (cdiff != 0) { |
| 687 | arena->stats.mapped -= cdiff; |
| 688 | stats_cactive_sub(udiff); |
| 689 | } |
| 690 | } |
| 691 | arena->nactive -= udiff >> LG_PAGE; |
| 692 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 2012d5a | 2014-11-17 09:54:49 -0800 | [diff] [blame] | 693 | if (cdiff != 0) { |
| 694 | chunk_dalloc((void *)((uintptr_t)chunk + CHUNK_CEILING(usize)), |
| 695 | cdiff, arena->ind); |
| 696 | } |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 697 | } |
| 698 | |
| 699 | bool |
| 700 | arena_chunk_ralloc_huge_expand(arena_t *arena, void *chunk, size_t oldsize, |
| 701 | size_t usize, bool *zero) |
| 702 | { |
| 703 | chunk_alloc_t *chunk_alloc; |
| 704 | chunk_dalloc_t *chunk_dalloc; |
| 705 | size_t udiff = usize - oldsize; |
| 706 | size_t cdiff = CHUNK_CEILING(usize) - CHUNK_CEILING(oldsize); |
| 707 | |
| 708 | malloc_mutex_lock(&arena->lock); |
| 709 | chunk_alloc = arena->chunk_alloc; |
| 710 | chunk_dalloc = arena->chunk_dalloc; |
| 711 | if (config_stats) { |
| 712 | /* Optimistically update stats prior to unlocking. */ |
| 713 | arena_huge_ralloc_stats_update(arena, oldsize, usize); |
| 714 | arena->stats.mapped += cdiff; |
| 715 | } |
| 716 | arena->nactive += (udiff >> LG_PAGE); |
| 717 | malloc_mutex_unlock(&arena->lock); |
| 718 | |
Jason Evans | 2012d5a | 2014-11-17 09:54:49 -0800 | [diff] [blame] | 719 | if (chunk_alloc_arena(chunk_alloc, chunk_dalloc, arena->ind, |
| 720 | (void *)((uintptr_t)chunk + CHUNK_CEILING(oldsize)), cdiff, |
| 721 | chunksize, zero) == NULL) { |
Jason Evans | 9b41ac9 | 2014-10-14 22:20:00 -0700 | [diff] [blame] | 722 | /* Revert optimistic stats updates. */ |
| 723 | malloc_mutex_lock(&arena->lock); |
| 724 | if (config_stats) { |
| 725 | arena_huge_ralloc_stats_update_undo(arena, |
| 726 | oldsize, usize); |
| 727 | arena->stats.mapped -= cdiff; |
| 728 | } |
| 729 | arena->nactive -= (udiff >> LG_PAGE); |
| 730 | malloc_mutex_unlock(&arena->lock); |
| 731 | return (true); |
| 732 | } |
| 733 | |
| 734 | if (config_stats) |
| 735 | stats_cactive_add(udiff); |
| 736 | |
| 737 | return (false); |
| 738 | } |
| 739 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 740 | static arena_run_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 741 | 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] | 742 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 743 | arena_chunk_map_misc_t *miscelm; |
| 744 | arena_chunk_map_misc_t *key; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 745 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 746 | key = (arena_chunk_map_misc_t *)(size | CHUNK_MAP_KEY); |
| 747 | miscelm = arena_avail_tree_nsearch(&arena->runs_avail, key); |
| 748 | if (miscelm != NULL) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 749 | arena_run_t *run = &miscelm->run; |
| 750 | arena_run_split_large(arena, &miscelm->run, size, zero); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 751 | return (run); |
| 752 | } |
| 753 | |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 754 | return (NULL); |
| 755 | } |
| 756 | |
| 757 | static arena_run_t * |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 758 | arena_run_alloc_large(arena_t *arena, size_t size, bool zero) |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 759 | { |
| 760 | arena_chunk_t *chunk; |
| 761 | arena_run_t *run; |
| 762 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 763 | assert(size <= arena_maxrun); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 764 | assert((size & PAGE_MASK) == 0); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 765 | |
| 766 | /* Search the arena's chunks for the lowest best fit. */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 767 | run = arena_run_alloc_large_helper(arena, size, zero); |
Jason Evans | 5b0c996 | 2012-05-10 15:47:24 -0700 | [diff] [blame] | 768 | if (run != NULL) |
| 769 | return (run); |
| 770 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 771 | /* |
| 772 | * No usable runs. Create a new chunk from which to allocate the run. |
| 773 | */ |
| 774 | chunk = arena_chunk_alloc(arena); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 775 | if (chunk != NULL) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 776 | run = &arena_miscelm_get(chunk, map_bias)->run; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 777 | arena_run_split_large(arena, run, size, zero); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 778 | return (run); |
| 779 | } |
| 780 | |
| 781 | /* |
| 782 | * arena_chunk_alloc() failed, but another thread may have made |
| 783 | * sufficient memory available while this one dropped arena->lock in |
| 784 | * arena_chunk_alloc(), so search one more time. |
| 785 | */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 786 | return (arena_run_alloc_large_helper(arena, size, zero)); |
| 787 | } |
| 788 | |
| 789 | static arena_run_t * |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 790 | arena_run_alloc_small_helper(arena_t *arena, size_t size, index_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 791 | { |
| 792 | arena_run_t *run; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 793 | arena_chunk_map_misc_t *miscelm; |
| 794 | arena_chunk_map_misc_t *key; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 795 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 796 | key = (arena_chunk_map_misc_t *)(size | CHUNK_MAP_KEY); |
| 797 | miscelm = arena_avail_tree_nsearch(&arena->runs_avail, key); |
| 798 | if (miscelm != NULL) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 799 | run = &miscelm->run; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 800 | arena_run_split_small(arena, run, size, binind); |
| 801 | return (run); |
| 802 | } |
| 803 | |
| 804 | return (NULL); |
| 805 | } |
| 806 | |
| 807 | static arena_run_t * |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 808 | arena_run_alloc_small(arena_t *arena, size_t size, index_t binind) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 809 | { |
| 810 | arena_chunk_t *chunk; |
| 811 | arena_run_t *run; |
| 812 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 813 | assert(size <= arena_maxrun); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 814 | assert((size & PAGE_MASK) == 0); |
| 815 | assert(binind != BININD_INVALID); |
| 816 | |
| 817 | /* Search the arena's chunks for the lowest best fit. */ |
| 818 | run = arena_run_alloc_small_helper(arena, size, binind); |
| 819 | if (run != NULL) |
| 820 | return (run); |
| 821 | |
| 822 | /* |
| 823 | * No usable runs. Create a new chunk from which to allocate the run. |
| 824 | */ |
| 825 | chunk = arena_chunk_alloc(arena); |
| 826 | if (chunk != NULL) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 827 | run = &arena_miscelm_get(chunk, map_bias)->run; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 828 | arena_run_split_small(arena, run, size, binind); |
| 829 | return (run); |
| 830 | } |
| 831 | |
| 832 | /* |
| 833 | * arena_chunk_alloc() failed, but another thread may have made |
| 834 | * sufficient memory available while this one dropped arena->lock in |
| 835 | * arena_chunk_alloc(), so search one more time. |
| 836 | */ |
| 837 | return (arena_run_alloc_small_helper(arena, size, binind)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 838 | } |
| 839 | |
Jason Evans | af1f592 | 2014-10-30 16:38:08 -0700 | [diff] [blame] | 840 | JEMALLOC_INLINE_C void |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 841 | arena_maybe_purge(arena_t *arena) |
| 842 | { |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 843 | size_t threshold; |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 844 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 845 | /* Don't purge if the option is disabled. */ |
| 846 | if (opt_lg_dirty_mult < 0) |
| 847 | return; |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 848 | threshold = (arena->nactive >> opt_lg_dirty_mult); |
| 849 | /* |
| 850 | * Don't purge unless the number of purgeable pages exceeds the |
| 851 | * threshold. |
| 852 | */ |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 853 | if (arena->ndirty <= threshold) |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 854 | return; |
| 855 | |
| 856 | arena_purge(arena, false); |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 857 | } |
| 858 | |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 859 | static size_t |
| 860 | arena_dirty_count(arena_t *arena) |
| 861 | { |
| 862 | size_t ndirty = 0; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 863 | arena_chunk_map_misc_t *miscelm; |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 864 | arena_chunk_t *chunk; |
| 865 | size_t pageind, npages; |
| 866 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 867 | ql_foreach(miscelm, &arena->runs_dirty, dr_link) { |
| 868 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm); |
| 869 | pageind = arena_miscelm_to_pageind(miscelm); |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 870 | assert(arena_mapbits_allocated_get(chunk, pageind) == 0); |
| 871 | assert(arena_mapbits_large_get(chunk, pageind) == 0); |
| 872 | assert(arena_mapbits_dirty_get(chunk, pageind) != 0); |
| 873 | npages = arena_mapbits_unallocated_size_get(chunk, pageind) >> |
| 874 | LG_PAGE; |
| 875 | ndirty += npages; |
| 876 | } |
| 877 | |
Jason Evans | 2b2f6dc | 2014-11-01 02:29:10 -0700 | [diff] [blame] | 878 | return (ndirty); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 879 | } |
| 880 | |
| 881 | static size_t |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 882 | arena_compute_npurge(arena_t *arena, bool all) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 883 | { |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 884 | size_t npurge; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 885 | |
| 886 | /* |
| 887 | * Compute the minimum number of pages that this thread should try to |
| 888 | * purge. |
| 889 | */ |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 890 | if (!all) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 891 | size_t threshold = (arena->nactive >> opt_lg_dirty_mult); |
| 892 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 893 | npurge = arena->ndirty - threshold; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 894 | } else |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 895 | npurge = arena->ndirty; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 896 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 897 | return (npurge); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 898 | } |
| 899 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 900 | static size_t |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 901 | arena_stash_dirty(arena_t *arena, bool all, size_t npurge, |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 902 | arena_chunk_miscelms_t *miscelms) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 903 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 904 | arena_chunk_map_misc_t *miscelm; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 905 | size_t nstashed = 0; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 906 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 907 | /* Add at least npurge pages to purge_list. */ |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 908 | for (miscelm = ql_first(&arena->runs_dirty); miscelm != NULL; |
| 909 | miscelm = ql_first(&arena->runs_dirty)) { |
| 910 | arena_chunk_t *chunk = |
| 911 | (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm); |
| 912 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 913 | size_t run_size = arena_mapbits_unallocated_size_get(chunk, |
| 914 | pageind); |
| 915 | size_t npages = run_size >> LG_PAGE; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 916 | arena_run_t *run = &miscelm->run; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 917 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 918 | assert(pageind + npages <= chunk_npages); |
| 919 | assert(arena_mapbits_dirty_get(chunk, pageind) == |
| 920 | arena_mapbits_dirty_get(chunk, pageind+npages-1)); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 921 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 922 | /* |
| 923 | * If purging the spare chunk's run, make it available prior to |
| 924 | * allocation. |
| 925 | */ |
| 926 | if (chunk == arena->spare) |
| 927 | arena_chunk_alloc(arena); |
| 928 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 929 | /* Temporarily allocate the free dirty run. */ |
| 930 | arena_run_split_large(arena, run, run_size, false); |
| 931 | /* Append to purge_list for later processing. */ |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 932 | ql_elm_new(miscelm, dr_link); |
| 933 | ql_tail_insert(miscelms, miscelm, dr_link); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 934 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 935 | nstashed += npages; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 936 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 937 | if (!all && nstashed >= npurge) |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 938 | break; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 939 | } |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 940 | |
| 941 | return (nstashed); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 942 | } |
| 943 | |
| 944 | static size_t |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 945 | arena_purge_stashed(arena_t *arena, arena_chunk_miscelms_t *miscelms) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 946 | { |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 947 | size_t npurged, nmadvise; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 948 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 949 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 950 | if (config_stats) |
| 951 | nmadvise = 0; |
| 952 | npurged = 0; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 953 | |
| 954 | malloc_mutex_unlock(&arena->lock); |
| 955 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 956 | ql_foreach(miscelm, miscelms, dr_link) { |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 957 | arena_chunk_t *chunk; |
| 958 | size_t pageind, run_size, npages, flag_unzeroed, i; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 959 | bool unzeroed; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 960 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 961 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm); |
| 962 | pageind = arena_miscelm_to_pageind(miscelm); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 963 | run_size = arena_mapbits_large_size_get(chunk, pageind); |
| 964 | npages = run_size >> LG_PAGE; |
| 965 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 966 | assert(pageind + npages <= chunk_npages); |
| 967 | unzeroed = pages_purge((void *)((uintptr_t)chunk + (pageind << |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 968 | LG_PAGE)), run_size); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 969 | flag_unzeroed = unzeroed ? CHUNK_MAP_UNZEROED : 0; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 970 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 971 | /* |
| 972 | * Set the unzeroed flag for all pages, now that pages_purge() |
| 973 | * has returned whether the pages were zeroed as a side effect |
| 974 | * of purging. This chunk map modification is safe even though |
| 975 | * the arena mutex isn't currently owned by this thread, |
| 976 | * because the run is marked as allocated, thus protecting it |
| 977 | * from being modified by any other thread. As long as these |
| 978 | * writes don't perturb the first and last elements' |
| 979 | * CHUNK_MAP_ALLOCATED bits, behavior is well defined. |
| 980 | */ |
| 981 | for (i = 0; i < npages; i++) { |
| 982 | arena_mapbits_unzeroed_set(chunk, pageind+i, |
| 983 | flag_unzeroed); |
| 984 | } |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 985 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 986 | npurged += npages; |
| 987 | if (config_stats) |
| 988 | nmadvise++; |
| 989 | } |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 990 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 991 | malloc_mutex_lock(&arena->lock); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 992 | |
| 993 | if (config_stats) { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 994 | arena->stats.nmadvise += nmadvise; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 995 | arena->stats.purged += npurged; |
| 996 | } |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 997 | |
| 998 | return (npurged); |
| 999 | } |
| 1000 | |
| 1001 | static void |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1002 | arena_unstash_purged(arena_t *arena, arena_chunk_miscelms_t *miscelms) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1003 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1004 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1005 | |
| 1006 | /* Deallocate runs. */ |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1007 | for (miscelm = ql_first(miscelms); miscelm != NULL; |
| 1008 | miscelm = ql_first(miscelms)) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1009 | arena_run_t *run = &miscelm->run; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1010 | ql_remove(miscelms, miscelm, dr_link); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1011 | arena_run_dalloc(arena, run, false, true); |
| 1012 | } |
| 1013 | } |
| 1014 | |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1015 | void |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 1016 | arena_purge(arena_t *arena, bool all) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1017 | { |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1018 | size_t npurge, npurgeable, npurged; |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1019 | arena_chunk_miscelms_t purge_list; |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1020 | |
Jason Evans | 2b2f6dc | 2014-11-01 02:29:10 -0700 | [diff] [blame] | 1021 | /* |
| 1022 | * Calls to arena_dirty_count() are disabled even for debug builds |
| 1023 | * because overhead grows nonlinearly as memory usage increases. |
| 1024 | */ |
| 1025 | if (false && config_debug) { |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1026 | size_t ndirty = arena_dirty_count(arena); |
Qinfan Wu | a244e50 | 2014-07-21 10:23:36 -0700 | [diff] [blame] | 1027 | assert(ndirty == arena->ndirty); |
Jason Evans | 2caa471 | 2010-03-04 21:35:07 -0800 | [diff] [blame] | 1028 | } |
Qinfan Wu | e8a2fd8 | 2014-07-21 20:00:14 -0700 | [diff] [blame] | 1029 | assert((arena->nactive >> opt_lg_dirty_mult) < arena->ndirty || all); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1030 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1031 | if (config_stats) |
| 1032 | arena->stats.npurge++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1033 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1034 | npurge = arena_compute_npurge(arena, all); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1035 | ql_new(&purge_list); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1036 | npurgeable = arena_stash_dirty(arena, all, npurge, &purge_list); |
| 1037 | assert(npurgeable >= npurge); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1038 | npurged = arena_purge_stashed(arena, &purge_list); |
| 1039 | assert(npurged == npurgeable); |
Qinfan Wu | e970800 | 2014-07-21 18:09:04 -0700 | [diff] [blame] | 1040 | arena_unstash_purged(arena, &purge_list); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1041 | } |
| 1042 | |
Jason Evans | 6005f07 | 2010-09-30 16:55:08 -0700 | [diff] [blame] | 1043 | void |
| 1044 | arena_purge_all(arena_t *arena) |
| 1045 | { |
| 1046 | |
| 1047 | malloc_mutex_lock(&arena->lock); |
| 1048 | arena_purge(arena, true); |
| 1049 | malloc_mutex_unlock(&arena->lock); |
| 1050 | } |
| 1051 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1052 | static void |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1053 | arena_run_coalesce(arena_t *arena, arena_chunk_t *chunk, size_t *p_size, |
| 1054 | size_t *p_run_ind, size_t *p_run_pages, size_t flag_dirty) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1055 | { |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1056 | size_t size = *p_size; |
| 1057 | size_t run_ind = *p_run_ind; |
| 1058 | size_t run_pages = *p_run_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1059 | |
| 1060 | /* Try to coalesce forward. */ |
| 1061 | if (run_ind + run_pages < chunk_npages && |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1062 | arena_mapbits_allocated_get(chunk, run_ind+run_pages) == 0 && |
| 1063 | arena_mapbits_dirty_get(chunk, run_ind+run_pages) == flag_dirty) { |
| 1064 | size_t nrun_size = arena_mapbits_unallocated_size_get(chunk, |
| 1065 | run_ind+run_pages); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1066 | size_t nrun_pages = nrun_size >> LG_PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1067 | |
| 1068 | /* |
| 1069 | * Remove successor from runs_avail; the coalesced run is |
| 1070 | * inserted later. |
| 1071 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1072 | assert(arena_mapbits_unallocated_size_get(chunk, |
| 1073 | run_ind+run_pages+nrun_pages-1) == nrun_size); |
| 1074 | assert(arena_mapbits_dirty_get(chunk, |
| 1075 | run_ind+run_pages+nrun_pages-1) == flag_dirty); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1076 | arena_avail_remove(arena, chunk, run_ind+run_pages, nrun_pages); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1077 | |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1078 | /* If the successor is dirty, remove it from runs_dirty. */ |
| 1079 | if (flag_dirty != 0) { |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1080 | arena_dirty_remove(arena, chunk, run_ind+run_pages, |
| 1081 | nrun_pages); |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1082 | } |
| 1083 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1084 | size += nrun_size; |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1085 | run_pages += nrun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1086 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1087 | arena_mapbits_unallocated_size_set(chunk, run_ind, size); |
| 1088 | arena_mapbits_unallocated_size_set(chunk, run_ind+run_pages-1, |
| 1089 | size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1090 | } |
| 1091 | |
| 1092 | /* Try to coalesce backward. */ |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1093 | if (run_ind > map_bias && arena_mapbits_allocated_get(chunk, |
| 1094 | run_ind-1) == 0 && arena_mapbits_dirty_get(chunk, run_ind-1) == |
| 1095 | flag_dirty) { |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1096 | size_t prun_size = arena_mapbits_unallocated_size_get(chunk, |
| 1097 | run_ind-1); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1098 | size_t prun_pages = prun_size >> LG_PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1099 | |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1100 | run_ind -= prun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1101 | |
| 1102 | /* |
| 1103 | * Remove predecessor from runs_avail; the coalesced run is |
| 1104 | * inserted later. |
| 1105 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1106 | assert(arena_mapbits_unallocated_size_get(chunk, run_ind) == |
| 1107 | prun_size); |
| 1108 | assert(arena_mapbits_dirty_get(chunk, run_ind) == flag_dirty); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1109 | arena_avail_remove(arena, chunk, run_ind, prun_pages); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1110 | |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1111 | /* If the predecessor is dirty, remove it from runs_dirty. */ |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1112 | if (flag_dirty != 0) |
| 1113 | arena_dirty_remove(arena, chunk, run_ind, prun_pages); |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1114 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1115 | size += prun_size; |
Jason Evans | 12ca914 | 2010-10-17 19:56:09 -0700 | [diff] [blame] | 1116 | run_pages += prun_pages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1117 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1118 | arena_mapbits_unallocated_size_set(chunk, run_ind, size); |
| 1119 | arena_mapbits_unallocated_size_set(chunk, run_ind+run_pages-1, |
| 1120 | size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1121 | } |
| 1122 | |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1123 | *p_size = size; |
| 1124 | *p_run_ind = run_ind; |
| 1125 | *p_run_pages = run_pages; |
| 1126 | } |
| 1127 | |
| 1128 | static void |
| 1129 | arena_run_dalloc(arena_t *arena, arena_run_t *run, bool dirty, bool cleaned) |
| 1130 | { |
| 1131 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1132 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1133 | size_t size, run_ind, run_pages, flag_dirty; |
| 1134 | |
| 1135 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1136 | miscelm = arena_run_to_miscelm(run); |
| 1137 | run_ind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1138 | assert(run_ind >= map_bias); |
| 1139 | assert(run_ind < chunk_npages); |
| 1140 | if (arena_mapbits_large_get(chunk, run_ind) != 0) { |
| 1141 | size = arena_mapbits_large_size_get(chunk, run_ind); |
| 1142 | assert(size == PAGE || |
| 1143 | arena_mapbits_large_size_get(chunk, |
| 1144 | run_ind+(size>>LG_PAGE)-1) == 0); |
| 1145 | } else { |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 1146 | arena_bin_info_t *bin_info = &arena_bin_info[run->binind]; |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1147 | size = bin_info->run_size; |
| 1148 | } |
| 1149 | run_pages = (size >> LG_PAGE); |
| 1150 | arena_cactive_update(arena, 0, run_pages); |
| 1151 | arena->nactive -= run_pages; |
| 1152 | |
| 1153 | /* |
| 1154 | * The run is dirty if the caller claims to have dirtied it, as well as |
| 1155 | * if it was already dirty before being allocated and the caller |
| 1156 | * doesn't claim to have cleaned it. |
| 1157 | */ |
| 1158 | assert(arena_mapbits_dirty_get(chunk, run_ind) == |
| 1159 | arena_mapbits_dirty_get(chunk, run_ind+run_pages-1)); |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 1160 | if (!cleaned && arena_mapbits_dirty_get(chunk, run_ind) != 0) |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1161 | dirty = true; |
| 1162 | flag_dirty = dirty ? CHUNK_MAP_DIRTY : 0; |
| 1163 | |
| 1164 | /* Mark pages as unallocated in the chunk map. */ |
| 1165 | if (dirty) { |
| 1166 | arena_mapbits_unallocated_set(chunk, run_ind, size, |
| 1167 | CHUNK_MAP_DIRTY); |
| 1168 | arena_mapbits_unallocated_set(chunk, run_ind+run_pages-1, size, |
| 1169 | CHUNK_MAP_DIRTY); |
| 1170 | } else { |
| 1171 | arena_mapbits_unallocated_set(chunk, run_ind, size, |
| 1172 | arena_mapbits_unzeroed_get(chunk, run_ind)); |
| 1173 | arena_mapbits_unallocated_set(chunk, run_ind+run_pages-1, size, |
| 1174 | arena_mapbits_unzeroed_get(chunk, run_ind+run_pages-1)); |
| 1175 | } |
| 1176 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1177 | arena_run_coalesce(arena, chunk, &size, &run_ind, &run_pages, flag_dirty); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1178 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1179 | /* Insert into runs_avail, now that coalescing is complete. */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1180 | assert(arena_mapbits_unallocated_size_get(chunk, run_ind) == |
| 1181 | arena_mapbits_unallocated_size_get(chunk, run_ind+run_pages-1)); |
| 1182 | assert(arena_mapbits_dirty_get(chunk, run_ind) == |
| 1183 | arena_mapbits_dirty_get(chunk, run_ind+run_pages-1)); |
Qinfan Wu | 90737fc | 2014-07-21 19:39:20 -0700 | [diff] [blame] | 1184 | arena_avail_insert(arena, chunk, run_ind, run_pages); |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1185 | |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 1186 | if (dirty) |
| 1187 | arena_dirty_insert(arena, chunk, run_ind, run_pages); |
Qinfan Wu | 04d60a1 | 2014-07-18 14:21:17 -0700 | [diff] [blame] | 1188 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1189 | /* Deallocate chunk if it is now completely unused. */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1190 | if (size == arena_maxrun) { |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1191 | assert(run_ind == map_bias); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1192 | assert(run_pages == (arena_maxrun >> LG_PAGE)); |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 1193 | arena_chunk_dalloc(arena, chunk); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1194 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1195 | |
Jason Evans | 4fb7f51 | 2010-01-27 18:27:09 -0800 | [diff] [blame] | 1196 | /* |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1197 | * 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] | 1198 | * deallocated above, since in that case it is the spare. Waiting |
| 1199 | * until after possible chunk deallocation to do dirty processing |
| 1200 | * allows for an old spare to be fully deallocated, thus decreasing the |
| 1201 | * chances of spuriously crossing the dirty page purging threshold. |
| 1202 | */ |
Jason Evans | 8d4203c | 2010-04-13 20:53:21 -0700 | [diff] [blame] | 1203 | if (dirty) |
Jason Evans | 05b21be | 2010-03-14 17:36:10 -0700 | [diff] [blame] | 1204 | arena_maybe_purge(arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1205 | } |
| 1206 | |
| 1207 | static void |
| 1208 | arena_run_trim_head(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1209 | size_t oldsize, size_t newsize) |
| 1210 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1211 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
| 1212 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1213 | size_t head_npages = (oldsize - newsize) >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1214 | size_t flag_dirty = arena_mapbits_dirty_get(chunk, pageind); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1215 | |
| 1216 | assert(oldsize > newsize); |
| 1217 | |
| 1218 | /* |
| 1219 | * Update the chunk map so that arena_run_dalloc() can treat the |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1220 | * leading run as separately allocated. Set the last element of each |
| 1221 | * run first, in case of single-page runs. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1222 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1223 | assert(arena_mapbits_large_size_get(chunk, pageind) == oldsize); |
Jason Evans | d8ceef6 | 2012-05-10 20:59:39 -0700 | [diff] [blame] | 1224 | arena_mapbits_large_set(chunk, pageind+head_npages-1, 0, flag_dirty); |
| 1225 | arena_mapbits_large_set(chunk, pageind, oldsize-newsize, flag_dirty); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1226 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1227 | if (config_debug) { |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1228 | UNUSED size_t tail_npages = newsize >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1229 | assert(arena_mapbits_large_size_get(chunk, |
| 1230 | pageind+head_npages+tail_npages-1) == 0); |
| 1231 | assert(arena_mapbits_dirty_get(chunk, |
| 1232 | pageind+head_npages+tail_npages-1) == flag_dirty); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1233 | } |
Jason Evans | d8ceef6 | 2012-05-10 20:59:39 -0700 | [diff] [blame] | 1234 | arena_mapbits_large_set(chunk, pageind+head_npages, newsize, |
| 1235 | flag_dirty); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1236 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 1237 | arena_run_dalloc(arena, run, false, false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1238 | } |
| 1239 | |
| 1240 | static void |
| 1241 | arena_run_trim_tail(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1242 | size_t oldsize, size_t newsize, bool dirty) |
| 1243 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1244 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
| 1245 | size_t pageind = arena_miscelm_to_pageind(miscelm); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1246 | size_t head_npages = newsize >> LG_PAGE; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1247 | size_t flag_dirty = arena_mapbits_dirty_get(chunk, pageind); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1248 | arena_chunk_map_misc_t *tail_miscelm; |
| 1249 | arena_run_t *tail_run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1250 | |
| 1251 | assert(oldsize > newsize); |
| 1252 | |
| 1253 | /* |
| 1254 | * Update the chunk map so that arena_run_dalloc() can treat the |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1255 | * trailing run as separately allocated. Set the last element of each |
| 1256 | * run first, in case of single-page runs. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1257 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1258 | assert(arena_mapbits_large_size_get(chunk, pageind) == oldsize); |
Jason Evans | d8ceef6 | 2012-05-10 20:59:39 -0700 | [diff] [blame] | 1259 | arena_mapbits_large_set(chunk, pageind+head_npages-1, 0, flag_dirty); |
| 1260 | arena_mapbits_large_set(chunk, pageind, newsize, flag_dirty); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1261 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1262 | if (config_debug) { |
| 1263 | UNUSED size_t tail_npages = (oldsize - newsize) >> LG_PAGE; |
| 1264 | assert(arena_mapbits_large_size_get(chunk, |
| 1265 | pageind+head_npages+tail_npages-1) == 0); |
| 1266 | assert(arena_mapbits_dirty_get(chunk, |
| 1267 | pageind+head_npages+tail_npages-1) == flag_dirty); |
| 1268 | } |
| 1269 | arena_mapbits_large_set(chunk, pageind+head_npages, oldsize-newsize, |
Jason Evans | d8ceef6 | 2012-05-10 20:59:39 -0700 | [diff] [blame] | 1270 | flag_dirty); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1271 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1272 | tail_miscelm = arena_miscelm_get(chunk, pageind + head_npages); |
| 1273 | tail_run = &tail_miscelm->run; |
| 1274 | arena_run_dalloc(arena, tail_run, dirty, false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | static arena_run_t * |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1278 | arena_bin_runs_first(arena_bin_t *bin) |
| 1279 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1280 | arena_chunk_map_misc_t *miscelm = arena_run_tree_first(&bin->runs); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1281 | if (miscelm != NULL) |
| 1282 | return (&miscelm->run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1283 | |
| 1284 | return (NULL); |
| 1285 | } |
| 1286 | |
| 1287 | static void |
| 1288 | arena_bin_runs_insert(arena_bin_t *bin, arena_run_t *run) |
| 1289 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1290 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1291 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1292 | assert(arena_run_tree_search(&bin->runs, miscelm) == NULL); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1293 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1294 | arena_run_tree_insert(&bin->runs, miscelm); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | static void |
| 1298 | arena_bin_runs_remove(arena_bin_t *bin, arena_run_t *run) |
| 1299 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1300 | arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1301 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1302 | assert(arena_run_tree_search(&bin->runs, miscelm) != NULL); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1303 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1304 | arena_run_tree_remove(&bin->runs, miscelm); |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | static arena_run_t * |
| 1308 | arena_bin_nonfull_run_tryget(arena_bin_t *bin) |
| 1309 | { |
| 1310 | arena_run_t *run = arena_bin_runs_first(bin); |
| 1311 | if (run != NULL) { |
| 1312 | arena_bin_runs_remove(bin, run); |
| 1313 | if (config_stats) |
| 1314 | bin->stats.reruns++; |
| 1315 | } |
| 1316 | return (run); |
| 1317 | } |
| 1318 | |
| 1319 | static arena_run_t * |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1320 | arena_bin_nonfull_run_get(arena_t *arena, arena_bin_t *bin) |
| 1321 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1322 | arena_run_t *run; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1323 | index_t binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1324 | arena_bin_info_t *bin_info; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1325 | |
| 1326 | /* Look for a usable run. */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1327 | run = arena_bin_nonfull_run_tryget(bin); |
| 1328 | if (run != NULL) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1329 | return (run); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1330 | /* No existing runs have any space available. */ |
| 1331 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1332 | binind = arena_bin_index(arena, bin); |
| 1333 | bin_info = &arena_bin_info[binind]; |
| 1334 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1335 | /* Allocate a new run. */ |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1336 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 1337 | /******************************/ |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1338 | malloc_mutex_lock(&arena->lock); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1339 | run = arena_run_alloc_small(arena, bin_info->run_size, binind); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1340 | if (run != NULL) { |
| 1341 | /* Initialize run internals. */ |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 1342 | run->binind = binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1343 | run->nfree = bin_info->nregs; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1344 | bitmap_init(run->bitmap, &bin_info->bitmap_info); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 1345 | } |
| 1346 | malloc_mutex_unlock(&arena->lock); |
| 1347 | /********************************/ |
| 1348 | malloc_mutex_lock(&bin->lock); |
| 1349 | if (run != NULL) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1350 | if (config_stats) { |
| 1351 | bin->stats.nruns++; |
| 1352 | bin->stats.curruns++; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1353 | } |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1354 | return (run); |
| 1355 | } |
| 1356 | |
| 1357 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1358 | * arena_run_alloc_small() failed, but another thread may have made |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1359 | * sufficient memory available while this one dropped bin->lock above, |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1360 | * so search one more time. |
| 1361 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1362 | run = arena_bin_nonfull_run_tryget(bin); |
| 1363 | if (run != NULL) |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1364 | return (run); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1365 | |
| 1366 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1367 | } |
| 1368 | |
Jason Evans | 1e0a636 | 2010-03-13 13:41:58 -0800 | [diff] [blame] | 1369 | /* Re-fill bin->runcur, then call arena_run_reg_alloc(). */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1370 | static void * |
| 1371 | arena_bin_malloc_hard(arena_t *arena, arena_bin_t *bin) |
| 1372 | { |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1373 | void *ret; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1374 | index_t binind; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1375 | arena_bin_info_t *bin_info; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1376 | arena_run_t *run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1377 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1378 | binind = arena_bin_index(arena, bin); |
| 1379 | bin_info = &arena_bin_info[binind]; |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1380 | bin->runcur = NULL; |
| 1381 | run = arena_bin_nonfull_run_get(arena, bin); |
| 1382 | if (bin->runcur != NULL && bin->runcur->nfree > 0) { |
| 1383 | /* |
| 1384 | * Another thread updated runcur while this one ran without the |
| 1385 | * bin lock in arena_bin_nonfull_run_get(). |
| 1386 | */ |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1387 | assert(bin->runcur->nfree > 0); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1388 | ret = arena_run_reg_alloc(bin->runcur, bin_info); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1389 | if (run != NULL) { |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1390 | arena_chunk_t *chunk; |
| 1391 | |
| 1392 | /* |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1393 | * arena_run_alloc_small() may have allocated run, or |
| 1394 | * it may have pulled run from the bin's run tree. |
| 1395 | * Therefore it is unsafe to make any assumptions about |
| 1396 | * how run has previously been used, and |
| 1397 | * arena_bin_lower_run() must be called, as if a region |
| 1398 | * were just deallocated from the run. |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1399 | */ |
| 1400 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1401 | if (run->nfree == bin_info->nregs) |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1402 | arena_dalloc_bin_run(arena, chunk, run, bin); |
| 1403 | else |
| 1404 | arena_bin_lower_run(arena, chunk, run, bin); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1405 | } |
| 1406 | return (ret); |
| 1407 | } |
| 1408 | |
| 1409 | if (run == NULL) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1410 | return (NULL); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1411 | |
| 1412 | bin->runcur = run; |
| 1413 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1414 | assert(bin->runcur->nfree > 0); |
| 1415 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1416 | return (arena_run_reg_alloc(bin->runcur, bin_info)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1417 | } |
| 1418 | |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1419 | void |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1420 | arena_tcache_fill_small(arena_t *arena, tcache_bin_t *tbin, index_t binind, |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1421 | uint64_t prof_accumbytes) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1422 | { |
| 1423 | unsigned i, nfill; |
| 1424 | arena_bin_t *bin; |
| 1425 | arena_run_t *run; |
| 1426 | void *ptr; |
| 1427 | |
| 1428 | assert(tbin->ncached == 0); |
| 1429 | |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 1430 | if (config_prof && arena_prof_accum(arena, prof_accumbytes)) |
| 1431 | prof_idump(); |
Jason Evans | e69bee0 | 2010-03-15 22:25:23 -0700 | [diff] [blame] | 1432 | bin = &arena->bins[binind]; |
| 1433 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 1dcb4f8 | 2011-03-21 00:18:17 -0700 | [diff] [blame] | 1434 | for (i = 0, nfill = (tcache_bin_info[binind].ncached_max >> |
| 1435 | tbin->lg_fill_div); i < nfill; i++) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1436 | if ((run = bin->runcur) != NULL && run->nfree > 0) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1437 | ptr = arena_run_reg_alloc(run, &arena_bin_info[binind]); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1438 | else |
| 1439 | ptr = arena_bin_malloc_hard(arena, bin); |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 1440 | if (ptr == NULL) { |
| 1441 | /* |
| 1442 | * OOM. tbin->avail isn't yet filled down to its first |
| 1443 | * element, so the successful allocations (if any) must |
| 1444 | * be moved to the base of tbin->avail before bailing |
| 1445 | * out. |
| 1446 | */ |
| 1447 | if (i > 0) { |
| 1448 | memmove(tbin->avail, &tbin->avail[nfill - i], |
| 1449 | i * sizeof(void *)); |
| 1450 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1451 | break; |
Jason Evans | f11a677 | 2014-10-05 13:05:10 -0700 | [diff] [blame] | 1452 | } |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1453 | if (config_fill && unlikely(opt_junk)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1454 | arena_alloc_junk_small(ptr, &arena_bin_info[binind], |
| 1455 | true); |
| 1456 | } |
Jason Evans | 9c43c13 | 2011-03-18 10:53:15 -0700 | [diff] [blame] | 1457 | /* Insert such that low regions get used first. */ |
| 1458 | tbin->avail[nfill - 1 - i] = ptr; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1459 | } |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1460 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1461 | bin->stats.nmalloc += i; |
| 1462 | bin->stats.nrequests += tbin->tstats.nrequests; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 1463 | bin->stats.curregs += i; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1464 | bin->stats.nfills++; |
| 1465 | tbin->tstats.nrequests = 0; |
| 1466 | } |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1467 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1468 | tbin->ncached = i; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1469 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1470 | |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1471 | void |
| 1472 | arena_alloc_junk_small(void *ptr, arena_bin_info_t *bin_info, bool zero) |
| 1473 | { |
| 1474 | |
| 1475 | if (zero) { |
| 1476 | size_t redzone_size = bin_info->redzone_size; |
| 1477 | memset((void *)((uintptr_t)ptr - redzone_size), 0xa5, |
| 1478 | redzone_size); |
| 1479 | memset((void *)((uintptr_t)ptr + bin_info->reg_size), 0xa5, |
| 1480 | redzone_size); |
| 1481 | } else { |
| 1482 | memset((void *)((uintptr_t)ptr - bin_info->redzone_size), 0xa5, |
| 1483 | bin_info->reg_interval); |
| 1484 | } |
| 1485 | } |
| 1486 | |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1487 | #ifdef JEMALLOC_JET |
| 1488 | #undef arena_redzone_corruption |
| 1489 | #define arena_redzone_corruption JEMALLOC_N(arena_redzone_corruption_impl) |
| 1490 | #endif |
| 1491 | static void |
| 1492 | arena_redzone_corruption(void *ptr, size_t usize, bool after, |
| 1493 | size_t offset, uint8_t byte) |
| 1494 | { |
| 1495 | |
| 1496 | malloc_printf("<jemalloc>: Corrupt redzone %zu byte%s %s %p " |
| 1497 | "(size %zu), byte=%#x\n", offset, (offset == 1) ? "" : "s", |
| 1498 | after ? "after" : "before", ptr, usize, byte); |
| 1499 | } |
| 1500 | #ifdef JEMALLOC_JET |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1501 | #undef arena_redzone_corruption |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1502 | #define arena_redzone_corruption JEMALLOC_N(arena_redzone_corruption) |
| 1503 | arena_redzone_corruption_t *arena_redzone_corruption = |
| 1504 | JEMALLOC_N(arena_redzone_corruption_impl); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1505 | #endif |
| 1506 | |
| 1507 | static void |
| 1508 | 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] | 1509 | { |
| 1510 | size_t size = bin_info->reg_size; |
| 1511 | size_t redzone_size = bin_info->redzone_size; |
| 1512 | size_t i; |
| 1513 | bool error = false; |
| 1514 | |
| 1515 | for (i = 1; i <= redzone_size; i++) { |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1516 | uint8_t *byte = (uint8_t *)((uintptr_t)ptr - i); |
| 1517 | if (*byte != 0xa5) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1518 | error = true; |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1519 | arena_redzone_corruption(ptr, size, false, i, *byte); |
| 1520 | if (reset) |
| 1521 | *byte = 0xa5; |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1522 | } |
| 1523 | } |
| 1524 | for (i = 0; i < redzone_size; i++) { |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1525 | uint8_t *byte = (uint8_t *)((uintptr_t)ptr + size + i); |
| 1526 | if (*byte != 0xa5) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1527 | error = true; |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1528 | arena_redzone_corruption(ptr, size, true, i, *byte); |
| 1529 | if (reset) |
| 1530 | *byte = 0xa5; |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1531 | } |
| 1532 | } |
| 1533 | if (opt_abort && error) |
| 1534 | abort(); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1535 | } |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1536 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1537 | #ifdef JEMALLOC_JET |
| 1538 | #undef arena_dalloc_junk_small |
| 1539 | #define arena_dalloc_junk_small JEMALLOC_N(arena_dalloc_junk_small_impl) |
| 1540 | #endif |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1541 | void |
| 1542 | arena_dalloc_junk_small(void *ptr, arena_bin_info_t *bin_info) |
| 1543 | { |
| 1544 | size_t redzone_size = bin_info->redzone_size; |
| 1545 | |
| 1546 | arena_redzones_validate(ptr, bin_info, false); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1547 | memset((void *)((uintptr_t)ptr - redzone_size), 0x5a, |
| 1548 | bin_info->reg_interval); |
| 1549 | } |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1550 | #ifdef JEMALLOC_JET |
| 1551 | #undef arena_dalloc_junk_small |
| 1552 | #define arena_dalloc_junk_small JEMALLOC_N(arena_dalloc_junk_small) |
| 1553 | arena_dalloc_junk_small_t *arena_dalloc_junk_small = |
| 1554 | JEMALLOC_N(arena_dalloc_junk_small_impl); |
| 1555 | #endif |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1556 | |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1557 | void |
| 1558 | arena_quarantine_junk_small(void *ptr, size_t usize) |
| 1559 | { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1560 | index_t binind; |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1561 | arena_bin_info_t *bin_info; |
| 1562 | cassert(config_fill); |
| 1563 | assert(opt_junk); |
| 1564 | assert(opt_quarantine); |
| 1565 | assert(usize <= SMALL_MAXCLASS); |
| 1566 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1567 | binind = size2index(usize); |
Jason Evans | 0d6c5d8 | 2013-12-17 15:14:36 -0800 | [diff] [blame] | 1568 | bin_info = &arena_bin_info[binind]; |
| 1569 | arena_redzones_validate(ptr, bin_info, true); |
| 1570 | } |
| 1571 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1572 | void * |
| 1573 | arena_malloc_small(arena_t *arena, size_t size, bool zero) |
| 1574 | { |
| 1575 | void *ret; |
| 1576 | arena_bin_t *bin; |
| 1577 | arena_run_t *run; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1578 | index_t binind; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1579 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1580 | binind = size2index(size); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 1581 | assert(binind < NBINS); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1582 | bin = &arena->bins[binind]; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1583 | size = index2size(binind); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1584 | |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1585 | malloc_mutex_lock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1586 | if ((run = bin->runcur) != NULL && run->nfree > 0) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1587 | ret = arena_run_reg_alloc(run, &arena_bin_info[binind]); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1588 | else |
| 1589 | ret = arena_bin_malloc_hard(arena, bin); |
| 1590 | |
| 1591 | if (ret == NULL) { |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1592 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1593 | return (NULL); |
| 1594 | } |
| 1595 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1596 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1597 | bin->stats.nmalloc++; |
| 1598 | bin->stats.nrequests++; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 1599 | bin->stats.curregs++; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1600 | } |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1601 | malloc_mutex_unlock(&bin->lock); |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 1602 | if (config_prof && !isthreaded && arena_prof_accum(arena, size)) |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 1603 | prof_idump(); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1604 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 1605 | if (!zero) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1606 | if (config_fill) { |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1607 | if (unlikely(opt_junk)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1608 | arena_alloc_junk_small(ret, |
| 1609 | &arena_bin_info[binind], false); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1610 | } else if (unlikely(opt_zero)) |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1611 | memset(ret, 0, size); |
| 1612 | } |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 1613 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, size); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1614 | } else { |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1615 | if (config_fill && unlikely(opt_junk)) { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1616 | arena_alloc_junk_small(ret, &arena_bin_info[binind], |
| 1617 | true); |
| 1618 | } |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 1619 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1620 | memset(ret, 0, size); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1621 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1622 | |
| 1623 | return (ret); |
| 1624 | } |
| 1625 | |
| 1626 | void * |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1627 | arena_malloc_large(arena_t *arena, size_t size, bool zero) |
| 1628 | { |
| 1629 | void *ret; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1630 | size_t usize; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1631 | arena_run_t *run; |
| 1632 | arena_chunk_map_misc_t *miscelm; |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 1633 | UNUSED bool idump; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1634 | |
| 1635 | /* Large allocation. */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1636 | usize = s2u(size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1637 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1638 | run = arena_run_alloc_large(arena, usize, zero); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1639 | if (run == NULL) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1640 | malloc_mutex_unlock(&arena->lock); |
| 1641 | return (NULL); |
| 1642 | } |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1643 | miscelm = arena_run_to_miscelm(run); |
| 1644 | ret = arena_miscelm_to_rpages(miscelm); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1645 | if (config_stats) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1646 | index_t index = size2index(usize) - NBINS; |
| 1647 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1648 | arena->stats.nmalloc_large++; |
| 1649 | arena->stats.nrequests_large++; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1650 | arena->stats.allocated_large += usize; |
| 1651 | arena->stats.lstats[index].nmalloc++; |
| 1652 | arena->stats.lstats[index].nrequests++; |
| 1653 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1654 | } |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1655 | if (config_prof) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1656 | idump = arena_prof_accum_locked(arena, usize); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1657 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 88c222c | 2013-02-06 11:59:30 -0800 | [diff] [blame] | 1658 | if (config_prof && idump) |
| 1659 | prof_idump(); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1660 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 1661 | if (!zero) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1662 | if (config_fill) { |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1663 | if (unlikely(opt_junk)) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1664 | memset(ret, 0xa5, usize); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1665 | else if (unlikely(opt_zero)) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1666 | memset(ret, 0, usize); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1667 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1668 | } |
| 1669 | |
| 1670 | return (ret); |
| 1671 | } |
| 1672 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1673 | /* Only handles large allocations that require more than page alignment. */ |
| 1674 | void * |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1675 | arena_palloc(arena_t *arena, size_t size, size_t alignment, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1676 | { |
| 1677 | void *ret; |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1678 | size_t alloc_size, leadsize, trailsize; |
| 1679 | arena_run_t *run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1680 | arena_chunk_t *chunk; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1681 | arena_chunk_map_misc_t *miscelm; |
| 1682 | void *rpages; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1683 | |
| 1684 | assert((size & PAGE_MASK) == 0); |
Jason Evans | 9344368 | 2010-10-20 17:39:18 -0700 | [diff] [blame] | 1685 | |
| 1686 | alignment = PAGE_CEILING(alignment); |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1687 | alloc_size = size + alignment - PAGE; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1688 | |
| 1689 | malloc_mutex_lock(&arena->lock); |
Jason Evans | aa5113b | 2014-01-14 16:23:03 -0800 | [diff] [blame] | 1690 | run = arena_run_alloc_large(arena, alloc_size, false); |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1691 | if (run == NULL) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1692 | malloc_mutex_unlock(&arena->lock); |
| 1693 | return (NULL); |
| 1694 | } |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1695 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(run); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1696 | miscelm = arena_run_to_miscelm(run); |
| 1697 | rpages = arena_miscelm_to_rpages(miscelm); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1698 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1699 | leadsize = ALIGNMENT_CEILING((uintptr_t)rpages, alignment) - |
| 1700 | (uintptr_t)rpages; |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1701 | assert(alloc_size >= leadsize + size); |
| 1702 | trailsize = alloc_size - leadsize - size; |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1703 | if (leadsize != 0) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1704 | arena_chunk_map_misc_t *head_miscelm = miscelm; |
| 1705 | arena_run_t *head_run = run; |
| 1706 | |
| 1707 | miscelm = arena_miscelm_get(chunk, |
| 1708 | arena_miscelm_to_pageind(head_miscelm) + (leadsize >> |
| 1709 | LG_PAGE)); |
| 1710 | run = &miscelm->run; |
| 1711 | |
| 1712 | arena_run_trim_head(arena, chunk, head_run, alloc_size, |
| 1713 | alloc_size - leadsize); |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1714 | } |
| 1715 | if (trailsize != 0) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1716 | arena_run_trim_tail(arena, chunk, run, size + trailsize, size, |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 1717 | false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1718 | } |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1719 | arena_run_init_large(arena, run, size, zero); |
| 1720 | ret = arena_miscelm_to_rpages(miscelm); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1721 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1722 | if (config_stats) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1723 | index_t index = size2index(size) - NBINS; |
| 1724 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1725 | arena->stats.nmalloc_large++; |
| 1726 | arena->stats.nrequests_large++; |
| 1727 | arena->stats.allocated_large += size; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1728 | arena->stats.lstats[index].nmalloc++; |
| 1729 | arena->stats.lstats[index].nrequests++; |
| 1730 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1731 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1732 | malloc_mutex_unlock(&arena->lock); |
| 1733 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 1734 | if (config_fill && !zero) { |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1735 | if (unlikely(opt_junk)) |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 1736 | memset(ret, 0xa5, size); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1737 | else if (unlikely(opt_zero)) |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 1738 | memset(ret, 0, size); |
| 1739 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1740 | return (ret); |
| 1741 | } |
| 1742 | |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1743 | void |
| 1744 | arena_prof_promoted(const void *ptr, size_t size) |
| 1745 | { |
| 1746 | arena_chunk_t *chunk; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1747 | size_t pageind; |
| 1748 | index_t binind; |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1749 | |
Jason Evans | 78f7352 | 2012-04-18 13:38:40 -0700 | [diff] [blame] | 1750 | cassert(config_prof); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1751 | assert(ptr != NULL); |
| 1752 | assert(CHUNK_ADDR2BASE(ptr) != ptr); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1753 | assert(isalloc(ptr, false) == LARGE_MINCLASS); |
| 1754 | assert(isalloc(ptr, true) == LARGE_MINCLASS); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 1755 | assert(size <= SMALL_MAXCLASS); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1756 | |
| 1757 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1758 | pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1759 | binind = size2index(size); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 1760 | assert(binind < NBINS); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1761 | arena_mapbits_large_binind_set(chunk, pageind, binind); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1762 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1763 | assert(isalloc(ptr, false) == LARGE_MINCLASS); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1764 | assert(isalloc(ptr, true) == size); |
Jason Evans | 0b270a9 | 2010-03-31 16:45:04 -0700 | [diff] [blame] | 1765 | } |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 1766 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1767 | static void |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 1768 | arena_dissociate_bin_run(arena_chunk_t *chunk, arena_run_t *run, |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1769 | arena_bin_t *bin) |
| 1770 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1771 | |
Jason Evans | 19b3d61 | 2010-03-18 20:36:40 -0700 | [diff] [blame] | 1772 | /* Dissociate run from bin. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1773 | if (run == bin->runcur) |
| 1774 | bin->runcur = NULL; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1775 | else { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1776 | index_t binind = arena_bin_index(chunk->arena, bin); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1777 | arena_bin_info_t *bin_info = &arena_bin_info[binind]; |
| 1778 | |
| 1779 | if (bin_info->nregs != 1) { |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1780 | /* |
| 1781 | * This block's conditional is necessary because if the |
| 1782 | * run only contains one region, then it never gets |
| 1783 | * inserted into the non-full runs tree. |
| 1784 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1785 | arena_bin_runs_remove(bin, run); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1786 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1787 | } |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 1788 | } |
| 1789 | |
| 1790 | static void |
| 1791 | arena_dalloc_bin_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1792 | arena_bin_t *bin) |
| 1793 | { |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 1794 | |
| 1795 | assert(run != bin->runcur); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1796 | assert(arena_run_tree_search(&bin->runs, arena_run_to_miscelm(run)) == |
| 1797 | NULL); |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1798 | |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1799 | malloc_mutex_unlock(&bin->lock); |
| 1800 | /******************************/ |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1801 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 1802 | arena_run_dalloc(arena, run, true, false); |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 1803 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | e00572b | 2010-03-14 19:43:56 -0700 | [diff] [blame] | 1804 | /****************************/ |
| 1805 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1806 | if (config_stats) |
| 1807 | bin->stats.curruns--; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1808 | } |
| 1809 | |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1810 | static void |
| 1811 | arena_bin_lower_run(arena_t *arena, arena_chunk_t *chunk, arena_run_t *run, |
| 1812 | arena_bin_t *bin) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1813 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1814 | |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1815 | /* |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1816 | * Make sure that if bin->runcur is non-NULL, it refers to the lowest |
| 1817 | * non-full run. It is okay to NULL runcur out rather than proactively |
| 1818 | * keeping it pointing at the lowest non-full run. |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1819 | */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1820 | if ((uintptr_t)run < (uintptr_t)bin->runcur) { |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1821 | /* Switch runcur. */ |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1822 | if (bin->runcur->nfree > 0) |
| 1823 | arena_bin_runs_insert(bin, bin->runcur); |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1824 | bin->runcur = run; |
Jason Evans | e7a1058 | 2012-02-13 17:36:52 -0800 | [diff] [blame] | 1825 | if (config_stats) |
| 1826 | bin->stats.reruns++; |
| 1827 | } else |
| 1828 | arena_bin_runs_insert(bin, run); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1829 | } |
| 1830 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1831 | static void |
| 1832 | arena_dalloc_bin_locked_impl(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
| 1833 | arena_chunk_map_bits_t *bitselm, bool junked) |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1834 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1835 | size_t pageind, rpages_ind; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1836 | arena_run_t *run; |
| 1837 | arena_bin_t *bin; |
Mike Hommey | 8b49971 | 2012-04-24 23:22:02 +0200 | [diff] [blame] | 1838 | arena_bin_info_t *bin_info; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1839 | index_t binind; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1840 | |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 1841 | pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1842 | rpages_ind = pageind - arena_mapbits_small_runind_get(chunk, pageind); |
| 1843 | run = &arena_miscelm_get(chunk, rpages_ind)->run; |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 1844 | binind = run->binind; |
| 1845 | bin = &arena->bins[binind]; |
Mike Hommey | 8b49971 | 2012-04-24 23:22:02 +0200 | [diff] [blame] | 1846 | bin_info = &arena_bin_info[binind]; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1847 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1848 | if (!junked && config_fill && unlikely(opt_junk)) |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 1849 | arena_dalloc_junk_small(ptr, bin_info); |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 1850 | |
| 1851 | arena_run_reg_dalloc(run, ptr); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 1852 | if (run->nfree == bin_info->nregs) { |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 1853 | arena_dissociate_bin_run(chunk, run, bin); |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1854 | arena_dalloc_bin_run(arena, chunk, run, bin); |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 1855 | } else if (run->nfree == 1 && run != bin->runcur) |
Jason Evans | 8de6a02 | 2010-10-17 20:57:30 -0700 | [diff] [blame] | 1856 | arena_bin_lower_run(arena, chunk, run, bin); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1857 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1858 | if (config_stats) { |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1859 | bin->stats.ndalloc++; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 1860 | bin->stats.curregs--; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1861 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1862 | } |
| 1863 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1864 | void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1865 | arena_dalloc_bin_junked_locked(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
| 1866 | arena_chunk_map_bits_t *bitselm) |
| 1867 | { |
| 1868 | |
| 1869 | arena_dalloc_bin_locked_impl(arena, chunk, ptr, bitselm, true); |
| 1870 | } |
| 1871 | |
| 1872 | void |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1873 | arena_dalloc_bin(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1874 | size_t pageind, arena_chunk_map_bits_t *bitselm) |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1875 | { |
| 1876 | arena_run_t *run; |
| 1877 | arena_bin_t *bin; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1878 | size_t rpages_ind; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1879 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1880 | rpages_ind = pageind - arena_mapbits_small_runind_get(chunk, pageind); |
| 1881 | run = &arena_miscelm_get(chunk, rpages_ind)->run; |
Jason Evans | 381c23d | 2014-10-10 23:01:03 -0700 | [diff] [blame] | 1882 | bin = &arena->bins[run->binind]; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1883 | malloc_mutex_lock(&bin->lock); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1884 | arena_dalloc_bin_locked_impl(arena, chunk, ptr, bitselm, false); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1885 | malloc_mutex_unlock(&bin->lock); |
| 1886 | } |
| 1887 | |
| 1888 | void |
| 1889 | arena_dalloc_small(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
| 1890 | size_t pageind) |
| 1891 | { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1892 | arena_chunk_map_bits_t *bitselm; |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1893 | |
| 1894 | if (config_debug) { |
Jason Evans | 80737c3 | 2012-05-02 16:11:03 -0700 | [diff] [blame] | 1895 | /* arena_ptr_small_binind_get() does extra sanity checking. */ |
| 1896 | assert(arena_ptr_small_binind_get(ptr, arena_mapbits_get(chunk, |
| 1897 | pageind)) != BININD_INVALID); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1898 | } |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 1899 | bitselm = arena_bitselm_get(chunk, pageind); |
| 1900 | arena_dalloc_bin(arena, chunk, ptr, pageind, bitselm); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1901 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1902 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1903 | #ifdef JEMALLOC_JET |
| 1904 | #undef arena_dalloc_junk_large |
| 1905 | #define arena_dalloc_junk_large JEMALLOC_N(arena_dalloc_junk_large_impl) |
| 1906 | #endif |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1907 | void |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1908 | arena_dalloc_junk_large(void *ptr, size_t usize) |
| 1909 | { |
| 1910 | |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 1911 | if (config_fill && unlikely(opt_junk)) |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1912 | memset(ptr, 0x5a, usize); |
| 1913 | } |
| 1914 | #ifdef JEMALLOC_JET |
| 1915 | #undef arena_dalloc_junk_large |
| 1916 | #define arena_dalloc_junk_large JEMALLOC_N(arena_dalloc_junk_large) |
| 1917 | arena_dalloc_junk_large_t *arena_dalloc_junk_large = |
| 1918 | JEMALLOC_N(arena_dalloc_junk_large_impl); |
| 1919 | #endif |
| 1920 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1921 | void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1922 | arena_dalloc_large_locked_impl(arena_t *arena, arena_chunk_t *chunk, |
| 1923 | void *ptr, bool junked) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1924 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1925 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
| 1926 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get(chunk, pageind); |
| 1927 | arena_run_t *run = &miscelm->run; |
Jason Evans | 1366826 | 2010-01-31 03:57:29 -0800 | [diff] [blame] | 1928 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1929 | if (config_fill || config_stats) { |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1930 | size_t usize = arena_mapbits_large_size_get(chunk, pageind); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1931 | |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1932 | if (!junked) |
| 1933 | arena_dalloc_junk_large(ptr, usize); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1934 | if (config_stats) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1935 | index_t index = size2index(usize) - NBINS; |
| 1936 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1937 | arena->stats.ndalloc_large++; |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 1938 | arena->stats.allocated_large -= usize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1939 | arena->stats.lstats[index].ndalloc++; |
| 1940 | arena->stats.lstats[index].curruns--; |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1941 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1942 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1943 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1944 | arena_run_dalloc(arena, run, true, false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1945 | } |
| 1946 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1947 | void |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1948 | arena_dalloc_large_junked_locked(arena_t *arena, arena_chunk_t *chunk, |
| 1949 | void *ptr) |
| 1950 | { |
| 1951 | |
| 1952 | arena_dalloc_large_locked_impl(arena, chunk, ptr, true); |
| 1953 | } |
| 1954 | |
| 1955 | void |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1956 | arena_dalloc_large(arena_t *arena, arena_chunk_t *chunk, void *ptr) |
| 1957 | { |
| 1958 | |
| 1959 | malloc_mutex_lock(&arena->lock); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 1960 | arena_dalloc_large_locked_impl(arena, chunk, ptr, false); |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 1961 | malloc_mutex_unlock(&arena->lock); |
| 1962 | } |
| 1963 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1964 | static void |
| 1965 | 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] | 1966 | size_t oldsize, size_t size) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1967 | { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1968 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
| 1969 | arena_chunk_map_misc_t *miscelm = arena_miscelm_get(chunk, pageind); |
| 1970 | arena_run_t *run = &miscelm->run; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1971 | |
| 1972 | assert(size < oldsize); |
| 1973 | |
| 1974 | /* |
| 1975 | * Shrink the run, and make trailing pages available for other |
| 1976 | * allocations. |
| 1977 | */ |
| 1978 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 1979 | arena_run_trim_tail(arena, chunk, run, oldsize, size, true); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1980 | if (config_stats) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1981 | index_t oldindex = size2index(oldsize) - NBINS; |
| 1982 | index_t index = size2index(size) - NBINS; |
| 1983 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1984 | arena->stats.ndalloc_large++; |
| 1985 | arena->stats.allocated_large -= oldsize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1986 | arena->stats.lstats[oldindex].ndalloc++; |
| 1987 | arena->stats.lstats[oldindex].curruns--; |
Jason Evans | 990d10c | 2010-01-31 03:49:35 -0800 | [diff] [blame] | 1988 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 1989 | arena->stats.nmalloc_large++; |
| 1990 | arena->stats.nrequests_large++; |
| 1991 | arena->stats.allocated_large += size; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 1992 | arena->stats.lstats[index].nmalloc++; |
| 1993 | arena->stats.lstats[index].nrequests++; |
| 1994 | arena->stats.lstats[index].curruns++; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1995 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 1996 | malloc_mutex_unlock(&arena->lock); |
| 1997 | } |
| 1998 | |
| 1999 | static bool |
| 2000 | arena_ralloc_large_grow(arena_t *arena, arena_chunk_t *chunk, void *ptr, |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2001 | size_t oldsize, size_t size, size_t extra, bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2002 | { |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2003 | size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE; |
| 2004 | size_t npages = oldsize >> LG_PAGE; |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2005 | size_t followsize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2006 | size_t usize_min = s2u(size); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2007 | |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2008 | assert(oldsize == arena_mapbits_large_size_get(chunk, pageind)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2009 | |
| 2010 | /* Try to extend the run. */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2011 | assert(usize_min > oldsize); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2012 | malloc_mutex_lock(&arena->lock); |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 2013 | if (pageind + npages < chunk_npages && |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2014 | arena_mapbits_allocated_get(chunk, pageind+npages) == 0 && |
| 2015 | (followsize = arena_mapbits_unallocated_size_get(chunk, |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2016 | pageind+npages)) >= usize_min - oldsize) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2017 | /* |
| 2018 | * The next run is available and sufficiently large. Split the |
| 2019 | * following run, then merge the first part with the existing |
| 2020 | * allocation. |
| 2021 | */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2022 | size_t flag_dirty, splitsize, usize; |
| 2023 | |
| 2024 | usize = s2u(size + extra); |
| 2025 | while (oldsize + followsize < usize) |
| 2026 | usize = index2size(size2index(usize)-1); |
| 2027 | assert(usize >= usize_min); |
| 2028 | splitsize = usize - oldsize; |
| 2029 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2030 | arena_run_t *run = &arena_miscelm_get(chunk, |
| 2031 | pageind+npages)->run; |
| 2032 | arena_run_split_large(arena, run, splitsize, zero); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2033 | |
Jason Evans | 088e6a0 | 2010-10-18 00:04:44 -0700 | [diff] [blame] | 2034 | size = oldsize + splitsize; |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2035 | npages = size >> LG_PAGE; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2036 | |
| 2037 | /* |
| 2038 | * Mark the extended run as dirty if either portion of the run |
| 2039 | * was dirty before allocation. This is rather pedantic, |
| 2040 | * because there's not actually any sequence of events that |
| 2041 | * could cause the resulting run to be passed to |
| 2042 | * arena_run_dalloc() with the dirty argument set to false |
| 2043 | * (which is when dirty flag consistency would really matter). |
| 2044 | */ |
Jason Evans | 203484e | 2012-05-02 00:30:36 -0700 | [diff] [blame] | 2045 | flag_dirty = arena_mapbits_dirty_get(chunk, pageind) | |
| 2046 | arena_mapbits_dirty_get(chunk, pageind+npages-1); |
| 2047 | arena_mapbits_large_set(chunk, pageind, size, flag_dirty); |
| 2048 | arena_mapbits_large_set(chunk, pageind+npages-1, 0, flag_dirty); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2049 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2050 | if (config_stats) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2051 | index_t oldindex = size2index(oldsize) - NBINS; |
| 2052 | index_t index = size2index(size) - NBINS; |
| 2053 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2054 | arena->stats.ndalloc_large++; |
| 2055 | arena->stats.allocated_large -= oldsize; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2056 | arena->stats.lstats[oldindex].ndalloc++; |
| 2057 | arena->stats.lstats[oldindex].curruns--; |
Jason Evans | 990d10c | 2010-01-31 03:49:35 -0800 | [diff] [blame] | 2058 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2059 | arena->stats.nmalloc_large++; |
| 2060 | arena->stats.nrequests_large++; |
| 2061 | arena->stats.allocated_large += size; |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2062 | arena->stats.lstats[index].nmalloc++; |
| 2063 | arena->stats.lstats[index].nrequests++; |
| 2064 | arena->stats.lstats[index].curruns++; |
Jason Evans | 940a2e0 | 2010-10-17 17:51:37 -0700 | [diff] [blame] | 2065 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2066 | malloc_mutex_unlock(&arena->lock); |
| 2067 | return (false); |
| 2068 | } |
| 2069 | malloc_mutex_unlock(&arena->lock); |
| 2070 | |
| 2071 | return (true); |
| 2072 | } |
| 2073 | |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2074 | #ifdef JEMALLOC_JET |
| 2075 | #undef arena_ralloc_junk_large |
| 2076 | #define arena_ralloc_junk_large JEMALLOC_N(arena_ralloc_junk_large_impl) |
| 2077 | #endif |
| 2078 | static void |
| 2079 | arena_ralloc_junk_large(void *ptr, size_t old_usize, size_t usize) |
| 2080 | { |
| 2081 | |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2082 | if (config_fill && unlikely(opt_junk)) { |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2083 | memset((void *)((uintptr_t)ptr + usize), 0x5a, |
| 2084 | old_usize - usize); |
| 2085 | } |
| 2086 | } |
| 2087 | #ifdef JEMALLOC_JET |
| 2088 | #undef arena_ralloc_junk_large |
| 2089 | #define arena_ralloc_junk_large JEMALLOC_N(arena_ralloc_junk_large) |
| 2090 | arena_ralloc_junk_large_t *arena_ralloc_junk_large = |
| 2091 | JEMALLOC_N(arena_ralloc_junk_large_impl); |
| 2092 | #endif |
| 2093 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2094 | /* |
| 2095 | * Try to resize a large allocation, in order to avoid copying. This will |
| 2096 | * always fail if growing an object, and the following run is already in use. |
| 2097 | */ |
| 2098 | static bool |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2099 | arena_ralloc_large(void *ptr, size_t oldsize, size_t size, size_t extra, |
| 2100 | bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2101 | { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2102 | size_t usize; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2103 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2104 | /* Make sure extra can't cause size_t overflow. */ |
Daniel Micay | 809b0ac | 2014-10-23 10:30:52 -0400 | [diff] [blame] | 2105 | if (unlikely(extra >= arena_maxclass)) |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2106 | return (true); |
| 2107 | |
| 2108 | usize = s2u(size + extra); |
| 2109 | if (usize == oldsize) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2110 | /* Same size class. */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2111 | return (false); |
| 2112 | } else { |
| 2113 | arena_chunk_t *chunk; |
| 2114 | arena_t *arena; |
| 2115 | |
| 2116 | chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); |
| 2117 | arena = chunk->arena; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2118 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2119 | if (usize < oldsize) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2120 | /* Fill before shrinking in order avoid a race. */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2121 | arena_ralloc_junk_large(ptr, oldsize, usize); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2122 | arena_ralloc_large_shrink(arena, chunk, ptr, oldsize, |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2123 | usize); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2124 | return (false); |
| 2125 | } else { |
| 2126 | bool ret = arena_ralloc_large_grow(arena, chunk, ptr, |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2127 | oldsize, size, extra, zero); |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2128 | if (config_fill && !ret && !zero) { |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2129 | if (unlikely(opt_junk)) { |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2130 | memset((void *)((uintptr_t)ptr + |
| 2131 | oldsize), 0xa5, isalloc(ptr, |
| 2132 | config_prof) - oldsize); |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2133 | } else if (unlikely(opt_zero)) { |
Jason Evans | 6b694c4 | 2014-01-07 16:47:56 -0800 | [diff] [blame] | 2134 | memset((void *)((uintptr_t)ptr + |
| 2135 | oldsize), 0, isalloc(ptr, |
| 2136 | config_prof) - oldsize); |
| 2137 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2138 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2139 | return (ret); |
| 2140 | } |
| 2141 | } |
| 2142 | } |
| 2143 | |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 2144 | bool |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2145 | arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size, size_t extra, |
| 2146 | bool zero) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2147 | { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2148 | |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2149 | /* |
| 2150 | * Avoid moving the allocation if the size class can be left the same. |
| 2151 | */ |
Daniel Micay | 809b0ac | 2014-10-23 10:30:52 -0400 | [diff] [blame] | 2152 | if (likely(oldsize <= arena_maxclass)) { |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2153 | if (oldsize <= SMALL_MAXCLASS) { |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2154 | assert(arena_bin_info[size2index(oldsize)].reg_size |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2155 | == oldsize); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2156 | if ((size + extra <= SMALL_MAXCLASS && size2index(size + |
| 2157 | extra) == size2index(oldsize)) || (size <= oldsize |
| 2158 | && size + extra >= oldsize)) |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 2159 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2160 | } else { |
| 2161 | assert(size <= arena_maxclass); |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2162 | if (size + extra > SMALL_MAXCLASS) { |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2163 | if (!arena_ralloc_large(ptr, oldsize, size, |
| 2164 | extra, zero)) |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 2165 | return (false); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2166 | } |
| 2167 | } |
| 2168 | } |
| 2169 | |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2170 | /* Reallocation would require a move. */ |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 2171 | return (true); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2172 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2173 | |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2174 | void * |
Jason Evans | 5460aa6 | 2014-09-22 21:09:23 -0700 | [diff] [blame] | 2175 | arena_ralloc(tsd_t *tsd, arena_t *arena, void *ptr, size_t oldsize, size_t size, |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2176 | size_t extra, size_t alignment, bool zero, bool try_tcache_alloc, |
| 2177 | bool try_tcache_dalloc) |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2178 | { |
| 2179 | void *ret; |
| 2180 | size_t copysize; |
| 2181 | |
| 2182 | /* Try to avoid moving the allocation. */ |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2183 | if (!arena_ralloc_no_move(ptr, oldsize, size, extra, zero)) |
Jason Evans | b2c3166 | 2014-01-12 15:05:44 -0800 | [diff] [blame] | 2184 | return (ptr); |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2185 | |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2186 | /* |
| 2187 | * size and oldsize are different enough that we need to move the |
| 2188 | * object. In that case, fall back to allocating new space and |
| 2189 | * copying. |
| 2190 | */ |
Jason Evans | 38d9210 | 2011-03-23 00:37:29 -0700 | [diff] [blame] | 2191 | if (alignment != 0) { |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2192 | size_t usize = sa2u(size + extra, alignment); |
Jason Evans | 38d9210 | 2011-03-23 00:37:29 -0700 | [diff] [blame] | 2193 | if (usize == 0) |
| 2194 | return (NULL); |
Jason Evans | 5460aa6 | 2014-09-22 21:09:23 -0700 | [diff] [blame] | 2195 | ret = ipalloct(tsd, usize, alignment, zero, try_tcache_alloc, |
| 2196 | arena); |
| 2197 | } else { |
| 2198 | ret = arena_malloc(tsd, arena, size + extra, zero, |
| 2199 | try_tcache_alloc); |
| 2200 | } |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2201 | |
| 2202 | if (ret == NULL) { |
| 2203 | if (extra == 0) |
| 2204 | return (NULL); |
| 2205 | /* Try again, this time without extra. */ |
Jason Evans | 38d9210 | 2011-03-23 00:37:29 -0700 | [diff] [blame] | 2206 | if (alignment != 0) { |
Jason Evans | 5ff709c | 2012-04-11 18:13:45 -0700 | [diff] [blame] | 2207 | size_t usize = sa2u(size, alignment); |
Jason Evans | 38d9210 | 2011-03-23 00:37:29 -0700 | [diff] [blame] | 2208 | if (usize == 0) |
| 2209 | return (NULL); |
Jason Evans | 5460aa6 | 2014-09-22 21:09:23 -0700 | [diff] [blame] | 2210 | ret = ipalloct(tsd, usize, alignment, zero, |
| 2211 | try_tcache_alloc, arena); |
| 2212 | } else { |
| 2213 | ret = arena_malloc(tsd, arena, size, zero, |
| 2214 | try_tcache_alloc); |
| 2215 | } |
Jason Evans | 8e3c3c6 | 2010-09-17 15:46:18 -0700 | [diff] [blame] | 2216 | |
| 2217 | if (ret == NULL) |
| 2218 | return (NULL); |
| 2219 | } |
| 2220 | |
| 2221 | /* Junk/zero-filling were already done by ipalloc()/arena_malloc(). */ |
| 2222 | |
| 2223 | /* |
| 2224 | * Copy at most size bytes (not size+extra), since the caller has no |
| 2225 | * expectation that the extra bytes will be reliably preserved. |
| 2226 | */ |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2227 | copysize = (size < oldsize) ? size : oldsize; |
Jason Evans | bd87b01 | 2014-04-15 16:35:08 -0700 | [diff] [blame] | 2228 | JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, copysize); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2229 | memcpy(ret, ptr, copysize); |
Daniel Micay | a9ea10d | 2014-10-16 15:05:02 -0400 | [diff] [blame] | 2230 | isqalloc(tsd, ptr, oldsize, try_tcache_dalloc); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2231 | return (ret); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2232 | } |
| 2233 | |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2234 | dss_prec_t |
| 2235 | arena_dss_prec_get(arena_t *arena) |
| 2236 | { |
| 2237 | dss_prec_t ret; |
| 2238 | |
| 2239 | malloc_mutex_lock(&arena->lock); |
| 2240 | ret = arena->dss_prec; |
| 2241 | malloc_mutex_unlock(&arena->lock); |
| 2242 | return (ret); |
| 2243 | } |
| 2244 | |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 2245 | bool |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2246 | arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec) |
| 2247 | { |
| 2248 | |
Jason Evans | 551ebc4 | 2014-10-03 10:16:09 -0700 | [diff] [blame] | 2249 | if (!have_dss) |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 2250 | return (dss_prec != dss_prec_disabled); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2251 | malloc_mutex_lock(&arena->lock); |
| 2252 | arena->dss_prec = dss_prec; |
| 2253 | malloc_mutex_unlock(&arena->lock); |
Jason Evans | 4d434ad | 2014-04-15 12:09:48 -0700 | [diff] [blame] | 2254 | return (false); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2255 | } |
| 2256 | |
| 2257 | void |
| 2258 | arena_stats_merge(arena_t *arena, const char **dss, size_t *nactive, |
| 2259 | size_t *ndirty, arena_stats_t *astats, malloc_bin_stats_t *bstats, |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2260 | malloc_large_stats_t *lstats, malloc_huge_stats_t *hstats) |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2261 | { |
| 2262 | unsigned i; |
| 2263 | |
| 2264 | malloc_mutex_lock(&arena->lock); |
| 2265 | *dss = dss_prec_names[arena->dss_prec]; |
| 2266 | *nactive += arena->nactive; |
| 2267 | *ndirty += arena->ndirty; |
| 2268 | |
| 2269 | astats->mapped += arena->stats.mapped; |
| 2270 | astats->npurge += arena->stats.npurge; |
| 2271 | astats->nmadvise += arena->stats.nmadvise; |
| 2272 | astats->purged += arena->stats.purged; |
| 2273 | astats->allocated_large += arena->stats.allocated_large; |
| 2274 | astats->nmalloc_large += arena->stats.nmalloc_large; |
| 2275 | astats->ndalloc_large += arena->stats.ndalloc_large; |
| 2276 | astats->nrequests_large += arena->stats.nrequests_large; |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 2277 | astats->allocated_huge += arena->stats.allocated_huge; |
| 2278 | astats->nmalloc_huge += arena->stats.nmalloc_huge; |
| 2279 | astats->ndalloc_huge += arena->stats.ndalloc_huge; |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2280 | |
| 2281 | for (i = 0; i < nlclasses; i++) { |
| 2282 | lstats[i].nmalloc += arena->stats.lstats[i].nmalloc; |
| 2283 | lstats[i].ndalloc += arena->stats.lstats[i].ndalloc; |
| 2284 | lstats[i].nrequests += arena->stats.lstats[i].nrequests; |
| 2285 | lstats[i].curruns += arena->stats.lstats[i].curruns; |
| 2286 | } |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2287 | |
| 2288 | for (i = 0; i < nhclasses; i++) { |
| 2289 | hstats[i].nmalloc += arena->stats.hstats[i].nmalloc; |
| 2290 | hstats[i].ndalloc += arena->stats.hstats[i].ndalloc; |
| 2291 | hstats[i].curhchunks += arena->stats.hstats[i].curhchunks; |
| 2292 | } |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2293 | malloc_mutex_unlock(&arena->lock); |
| 2294 | |
| 2295 | for (i = 0; i < NBINS; i++) { |
| 2296 | arena_bin_t *bin = &arena->bins[i]; |
| 2297 | |
| 2298 | malloc_mutex_lock(&bin->lock); |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2299 | bstats[i].nmalloc += bin->stats.nmalloc; |
| 2300 | bstats[i].ndalloc += bin->stats.ndalloc; |
| 2301 | bstats[i].nrequests += bin->stats.nrequests; |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2302 | bstats[i].curregs += bin->stats.curregs; |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2303 | if (config_tcache) { |
| 2304 | bstats[i].nfills += bin->stats.nfills; |
| 2305 | bstats[i].nflushes += bin->stats.nflushes; |
| 2306 | } |
| 2307 | bstats[i].nruns += bin->stats.nruns; |
| 2308 | bstats[i].reruns += bin->stats.reruns; |
| 2309 | bstats[i].curruns += bin->stats.curruns; |
| 2310 | malloc_mutex_unlock(&bin->lock); |
| 2311 | } |
| 2312 | } |
| 2313 | |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2314 | arena_t * |
| 2315 | arena_new(unsigned ind) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2316 | { |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2317 | arena_t *arena; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2318 | unsigned i; |
| 2319 | arena_bin_t *bin; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2320 | |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2321 | /* |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2322 | * Allocate arena, arena->lstats, and arena->hstats contiguously, mainly |
| 2323 | * because there is no way to clean up if base_alloc() OOMs. |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2324 | */ |
| 2325 | if (config_stats) { |
| 2326 | arena = (arena_t *)base_alloc(CACHELINE_CEILING(sizeof(arena_t)) |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2327 | + QUANTUM_CEILING(nlclasses * sizeof(malloc_large_stats_t) + |
| 2328 | nhclasses) * sizeof(malloc_huge_stats_t)); |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2329 | } else |
| 2330 | arena = (arena_t *)base_alloc(sizeof(arena_t)); |
| 2331 | if (arena == NULL) |
| 2332 | return (NULL); |
| 2333 | |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 2334 | arena->ind = ind; |
Jason Evans | 597632b | 2011-03-18 13:41:33 -0700 | [diff] [blame] | 2335 | arena->nthreads = 0; |
aravind | fb7fe50 | 2014-05-05 15:16:56 -0700 | [diff] [blame] | 2336 | arena->chunk_alloc = chunk_alloc_default; |
Jason Evans | e2deab7 | 2014-05-15 22:22:27 -0700 | [diff] [blame] | 2337 | arena->chunk_dalloc = chunk_dalloc_default; |
Jason Evans | 6109fe0 | 2010-02-10 10:37:56 -0800 | [diff] [blame] | 2338 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2339 | if (malloc_mutex_init(&arena->lock)) |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2340 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2341 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2342 | if (config_stats) { |
| 2343 | memset(&arena->stats, 0, sizeof(arena_stats_t)); |
Jason Evans | d49cb68 | 2014-11-17 10:31:59 -0800 | [diff] [blame] | 2344 | arena->stats.lstats = (malloc_large_stats_t *)((uintptr_t)arena |
| 2345 | + CACHELINE_CEILING(sizeof(arena_t))); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2346 | memset(arena->stats.lstats, 0, nlclasses * |
| 2347 | sizeof(malloc_large_stats_t)); |
Jason Evans | d49cb68 | 2014-11-17 10:31:59 -0800 | [diff] [blame] | 2348 | arena->stats.hstats = (malloc_huge_stats_t *)((uintptr_t)arena |
| 2349 | + CACHELINE_CEILING(sizeof(arena_t)) + |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2350 | QUANTUM_CEILING(nlclasses * sizeof(malloc_large_stats_t))); |
| 2351 | memset(arena->stats.hstats, 0, nhclasses * |
| 2352 | sizeof(malloc_huge_stats_t)); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2353 | if (config_tcache) |
| 2354 | ql_new(&arena->tcache_ql); |
| 2355 | } |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2356 | |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2357 | if (config_prof) |
| 2358 | arena->prof_accumbytes = 0; |
Jason Evans | d34f9e7 | 2010-02-11 13:19:21 -0800 | [diff] [blame] | 2359 | |
Jason Evans | 609ae59 | 2012-10-11 13:53:15 -0700 | [diff] [blame] | 2360 | arena->dss_prec = chunk_dss_prec_get(); |
| 2361 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2362 | arena->spare = NULL; |
| 2363 | |
| 2364 | arena->nactive = 0; |
| 2365 | arena->ndirty = 0; |
| 2366 | |
Jason Evans | e3d1306 | 2012-10-30 15:42:37 -0700 | [diff] [blame] | 2367 | arena_avail_tree_new(&arena->runs_avail); |
Jason Evans | 070b3c3 | 2014-08-14 14:45:58 -0700 | [diff] [blame] | 2368 | ql_new(&arena->runs_dirty); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2369 | |
| 2370 | /* Initialize bins. */ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2371 | for (i = 0; i < NBINS; i++) { |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2372 | bin = &arena->bins[i]; |
Jason Evans | 86815df | 2010-03-13 20:32:56 -0800 | [diff] [blame] | 2373 | if (malloc_mutex_init(&bin->lock)) |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2374 | return (NULL); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2375 | bin->runcur = NULL; |
| 2376 | arena_run_tree_new(&bin->runs); |
Jason Evans | 7372b15 | 2012-02-10 20:22:09 -0800 | [diff] [blame] | 2377 | if (config_stats) |
| 2378 | memset(&bin->stats, 0, sizeof(malloc_bin_stats_t)); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2379 | } |
| 2380 | |
Jason Evans | 8bb3198 | 2014-10-07 23:14:57 -0700 | [diff] [blame] | 2381 | return (arena); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2382 | } |
| 2383 | |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2384 | /* |
| 2385 | * Calculate bin_info->run_size such that it meets the following constraints: |
| 2386 | * |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2387 | * *) bin_info->run_size <= arena_maxrun |
Jason Evans | 47e57f9 | 2011-03-22 09:00:56 -0700 | [diff] [blame] | 2388 | * *) bin_info->nregs <= RUN_MAXREGS |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2389 | * |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2390 | * bin_info->nregs and bin_info->reg0_offset are also calculated here, since |
| 2391 | * these settings are all interdependent. |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2392 | */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2393 | static void |
| 2394 | bin_info_run_size_calc(arena_bin_info_t *bin_info) |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2395 | { |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2396 | size_t pad_size; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2397 | size_t try_run_size, perfect_run_size, actual_run_size; |
| 2398 | uint32_t try_nregs, perfect_nregs, actual_nregs; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2399 | |
| 2400 | /* |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2401 | * Determine redzone size based on minimum alignment and minimum |
| 2402 | * redzone size. Add padding to the end of the run if it is needed to |
| 2403 | * align the regions. The padding allows each redzone to be half the |
| 2404 | * minimum alignment; without the padding, each redzone would have to |
| 2405 | * be twice as large in order to maintain alignment. |
| 2406 | */ |
Jason Evans | 9c640bf | 2014-09-11 16:20:44 -0700 | [diff] [blame] | 2407 | if (config_fill && unlikely(opt_redzone)) { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2408 | size_t align_min = ZU(1) << (jemalloc_ffs(bin_info->reg_size) - |
| 2409 | 1); |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2410 | if (align_min <= REDZONE_MINSIZE) { |
| 2411 | bin_info->redzone_size = REDZONE_MINSIZE; |
| 2412 | pad_size = 0; |
| 2413 | } else { |
| 2414 | bin_info->redzone_size = align_min >> 1; |
| 2415 | pad_size = bin_info->redzone_size; |
| 2416 | } |
| 2417 | } else { |
| 2418 | bin_info->redzone_size = 0; |
| 2419 | pad_size = 0; |
| 2420 | } |
| 2421 | bin_info->reg_interval = bin_info->reg_size + |
| 2422 | (bin_info->redzone_size << 1); |
| 2423 | |
| 2424 | /* |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2425 | * Compute run size under ideal conditions (no redzones, no limit on run |
| 2426 | * size). |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2427 | */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2428 | try_run_size = PAGE; |
| 2429 | try_nregs = try_run_size / bin_info->reg_size; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2430 | do { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2431 | perfect_run_size = try_run_size; |
| 2432 | perfect_nregs = try_nregs; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2433 | |
Jason Evans | ae4c7b4 | 2012-04-02 07:04:34 -0700 | [diff] [blame] | 2434 | try_run_size += PAGE; |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2435 | try_nregs = try_run_size / bin_info->reg_size; |
| 2436 | } while (perfect_run_size != perfect_nregs * bin_info->reg_size); |
| 2437 | assert(perfect_nregs <= RUN_MAXREGS); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2438 | |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2439 | actual_run_size = perfect_run_size; |
| 2440 | actual_nregs = (actual_run_size - pad_size) / bin_info->reg_interval; |
| 2441 | |
| 2442 | /* |
| 2443 | * Redzones can require enough padding that not even a single region can |
| 2444 | * fit within the number of pages that would normally be dedicated to a |
| 2445 | * run for this size class. Increase the run size until at least one |
| 2446 | * region fits. |
| 2447 | */ |
| 2448 | while (actual_nregs == 0) { |
| 2449 | assert(config_fill && unlikely(opt_redzone)); |
| 2450 | |
| 2451 | actual_run_size += PAGE; |
| 2452 | actual_nregs = (actual_run_size - pad_size) / |
| 2453 | bin_info->reg_interval; |
| 2454 | } |
| 2455 | |
| 2456 | /* |
| 2457 | * Make sure that the run will fit within an arena chunk. |
| 2458 | */ |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2459 | while (actual_run_size > arena_maxrun) { |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2460 | actual_run_size -= PAGE; |
| 2461 | actual_nregs = (actual_run_size - pad_size) / |
| 2462 | bin_info->reg_interval; |
| 2463 | } |
| 2464 | assert(actual_nregs > 0); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2465 | |
| 2466 | /* Copy final settings. */ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2467 | bin_info->run_size = actual_run_size; |
| 2468 | bin_info->nregs = actual_nregs; |
| 2469 | bin_info->reg0_offset = actual_run_size - (actual_nregs * |
| 2470 | bin_info->reg_interval) - pad_size + bin_info->redzone_size; |
Jason Evans | 122449b | 2012-04-06 00:35:09 -0700 | [diff] [blame] | 2471 | |
| 2472 | assert(bin_info->reg0_offset - bin_info->redzone_size + (bin_info->nregs |
| 2473 | * bin_info->reg_interval) + pad_size == bin_info->run_size); |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2474 | } |
| 2475 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2476 | static void |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2477 | bin_info_init(void) |
| 2478 | { |
| 2479 | arena_bin_info_t *bin_info; |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2480 | |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 2481 | #define BIN_INFO_INIT_bin_yes(index, size) \ |
| 2482 | bin_info = &arena_bin_info[index]; \ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2483 | bin_info->reg_size = size; \ |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2484 | bin_info_run_size_calc(bin_info); \ |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2485 | bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs); |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 2486 | #define BIN_INFO_INIT_bin_no(index, size) |
| 2487 | #define SC(index, lg_grp, lg_delta, ndelta, bin, lg_delta_lookup) \ |
| 2488 | 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] | 2489 | SIZE_CLASSES |
Jason Evans | d04047c | 2014-05-28 16:11:55 -0700 | [diff] [blame] | 2490 | #undef BIN_INFO_INIT_bin_yes |
| 2491 | #undef BIN_INFO_INIT_bin_no |
| 2492 | #undef SC |
Jason Evans | 49f7e8f | 2011-03-15 13:59:15 -0700 | [diff] [blame] | 2493 | } |
| 2494 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2495 | void |
Jason Evans | a0bf242 | 2010-01-29 14:30:41 -0800 | [diff] [blame] | 2496 | arena_boot(void) |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2497 | { |
Jason Evans | a0bf242 | 2010-01-29 14:30:41 -0800 | [diff] [blame] | 2498 | size_t header_size; |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 2499 | unsigned i; |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2500 | |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2501 | /* |
| 2502 | * 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] | 2503 | * page map. The page map is biased to omit entries for the header |
| 2504 | * itself, so some iteration is necessary to compute the map bias. |
| 2505 | * |
| 2506 | * 1) Compute safe header_size and map_bias values that include enough |
| 2507 | * space for an unbiased page map. |
| 2508 | * 2) Refine map_bias based on (1) to omit the header pages in the page |
| 2509 | * map. The resulting map_bias may be one too small. |
| 2510 | * 3) Refine map_bias based on (2). The result will be >= the result |
| 2511 | * from (2), and will always be correct. |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2512 | */ |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 2513 | map_bias = 0; |
| 2514 | for (i = 0; i < 3; i++) { |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2515 | header_size = offsetof(arena_chunk_t, map_bits) + |
| 2516 | ((sizeof(arena_chunk_map_bits_t) + |
| 2517 | sizeof(arena_chunk_map_misc_t)) * (chunk_npages-map_bias)); |
Jason Evans | 0c5dd03 | 2014-09-29 01:31:39 -0700 | [diff] [blame] | 2518 | map_bias = (header_size + PAGE_MASK) >> LG_PAGE; |
Jason Evans | 7393f44 | 2010-10-01 17:35:43 -0700 | [diff] [blame] | 2519 | } |
| 2520 | assert(map_bias > 0); |
| 2521 | |
Qinfan Wu | ff6a31d | 2014-08-29 13:34:40 -0700 | [diff] [blame] | 2522 | map_misc_offset = offsetof(arena_chunk_t, map_bits) + |
| 2523 | sizeof(arena_chunk_map_bits_t) * (chunk_npages-map_bias); |
| 2524 | |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2525 | arena_maxrun = chunksize - (map_bias << LG_PAGE); |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2526 | assert(arena_maxrun > 0); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2527 | arena_maxclass = index2size(size2index(chunksize)-1); |
| 2528 | if (arena_maxclass > arena_maxrun) { |
| 2529 | /* |
| 2530 | * For small chunk sizes it's possible for there to be fewer |
| 2531 | * non-header pages available than are necessary to serve the |
| 2532 | * size classes just below chunksize. |
| 2533 | */ |
| 2534 | arena_maxclass = arena_maxrun; |
| 2535 | } |
Jason Evans | fc0b3b7 | 2014-10-09 17:54:06 -0700 | [diff] [blame] | 2536 | assert(arena_maxclass > 0); |
Jason Evans | 155bfa7 | 2014-10-05 17:54:10 -0700 | [diff] [blame] | 2537 | nlclasses = size2index(arena_maxclass) - size2index(SMALL_MAXCLASS); |
Jason Evans | 3c4d92e | 2014-10-12 22:53:59 -0700 | [diff] [blame] | 2538 | nhclasses = NSIZES - nlclasses - NBINS; |
Jason Evans | a0bf242 | 2010-01-29 14:30:41 -0800 | [diff] [blame] | 2539 | |
Jason Evans | b172610 | 2012-02-28 16:50:47 -0800 | [diff] [blame] | 2540 | bin_info_init(); |
Jason Evans | e476f8a | 2010-01-16 09:53:50 -0800 | [diff] [blame] | 2541 | } |
Jason Evans | 4e2e3dd | 2012-03-13 16:31:41 -0700 | [diff] [blame] | 2542 | |
| 2543 | void |
| 2544 | arena_prefork(arena_t *arena) |
| 2545 | { |
| 2546 | unsigned i; |
| 2547 | |
| 2548 | malloc_mutex_prefork(&arena->lock); |
| 2549 | for (i = 0; i < NBINS; i++) |
| 2550 | malloc_mutex_prefork(&arena->bins[i].lock); |
| 2551 | } |
| 2552 | |
| 2553 | void |
| 2554 | arena_postfork_parent(arena_t *arena) |
| 2555 | { |
| 2556 | unsigned i; |
| 2557 | |
| 2558 | for (i = 0; i < NBINS; i++) |
| 2559 | malloc_mutex_postfork_parent(&arena->bins[i].lock); |
| 2560 | malloc_mutex_postfork_parent(&arena->lock); |
| 2561 | } |
| 2562 | |
| 2563 | void |
| 2564 | arena_postfork_child(arena_t *arena) |
| 2565 | { |
| 2566 | unsigned i; |
| 2567 | |
| 2568 | for (i = 0; i < NBINS; i++) |
| 2569 | malloc_mutex_postfork_child(&arena->bins[i].lock); |
| 2570 | malloc_mutex_postfork_child(&arena->lock); |
| 2571 | } |