Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1 | #include "Python.h" |
| 2 | #include "hashtable.h" |
| 3 | #include "frameobject.h" |
| 4 | #include "pythread.h" |
| 5 | #include "osdefs.h" |
| 6 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 7 | #include "clinic/_tracemalloc.c.h" |
| 8 | /*[clinic input] |
| 9 | module _tracemalloc |
| 10 | [clinic start generated code]*/ |
| 11 | /*[clinic end generated code: output=da39a3ee5e6b4b0d input=708a98302fc46e5f]*/ |
| 12 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 13 | /* Trace memory blocks allocated by PyMem_RawMalloc() */ |
| 14 | #define TRACE_RAW_MALLOC |
| 15 | |
| 16 | /* Forward declaration */ |
| 17 | static void tracemalloc_stop(void); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 18 | static void* raw_malloc(size_t size); |
| 19 | static void raw_free(void *ptr); |
| 20 | |
| 21 | #ifdef Py_DEBUG |
| 22 | # define TRACE_DEBUG |
| 23 | #endif |
| 24 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 25 | /* Protected by the GIL */ |
| 26 | static struct { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 27 | PyMemAllocatorEx mem; |
| 28 | PyMemAllocatorEx raw; |
| 29 | PyMemAllocatorEx obj; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 30 | } allocators; |
| 31 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 32 | static struct { |
| 33 | /* Module initialized? |
| 34 | Variable protected by the GIL */ |
| 35 | enum { |
| 36 | TRACEMALLOC_NOT_INITIALIZED, |
| 37 | TRACEMALLOC_INITIALIZED, |
| 38 | TRACEMALLOC_FINALIZED |
| 39 | } initialized; |
| 40 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 41 | /* Is tracemalloc tracing memory allocations? |
| 42 | Variable protected by the GIL */ |
| 43 | int tracing; |
| 44 | |
| 45 | /* limit of the number of frames in a traceback, 1 by default. |
| 46 | Variable protected by the GIL. */ |
| 47 | int max_nframe; |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 48 | |
| 49 | /* use domain in trace key? |
| 50 | Variable protected by the GIL. */ |
| 51 | int use_domain; |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 52 | } tracemalloc_config = {TRACEMALLOC_NOT_INITIALIZED, 0, 1, 0}; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 53 | |
Antoine Pitrou | a6a4dc8 | 2017-09-07 18:56:24 +0200 | [diff] [blame] | 54 | #if defined(TRACE_RAW_MALLOC) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 55 | /* This lock is needed because tracemalloc_free() is called without |
| 56 | the GIL held from PyMem_RawFree(). It cannot acquire the lock because it |
| 57 | would introduce a deadlock in PyThreadState_DeleteCurrent(). */ |
| 58 | static PyThread_type_lock tables_lock; |
| 59 | # define TABLES_LOCK() PyThread_acquire_lock(tables_lock, 1) |
| 60 | # define TABLES_UNLOCK() PyThread_release_lock(tables_lock) |
| 61 | #else |
| 62 | /* variables are protected by the GIL */ |
| 63 | # define TABLES_LOCK() |
| 64 | # define TABLES_UNLOCK() |
| 65 | #endif |
| 66 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 67 | |
| 68 | #define DEFAULT_DOMAIN 0 |
| 69 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 70 | /* Pack the frame_t structure to reduce the memory footprint. */ |
| 71 | typedef struct |
| 72 | #ifdef __GNUC__ |
| 73 | __attribute__((packed)) |
| 74 | #endif |
| 75 | { |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 76 | uintptr_t ptr; |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 77 | unsigned int domain; |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 78 | } pointer_t; |
| 79 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 80 | /* Pack the frame_t structure to reduce the memory footprint on 64-bit |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 81 | architectures: 12 bytes instead of 16. */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 82 | typedef struct |
| 83 | #ifdef __GNUC__ |
| 84 | __attribute__((packed)) |
Victor Stinner | dd382ef | 2014-02-01 03:43:58 +0100 | [diff] [blame] | 85 | #elif defined(_MSC_VER) |
Segev Finer | 3924377 | 2017-07-25 11:47:43 +0300 | [diff] [blame] | 86 | #pragma pack(push, 4) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 87 | #endif |
| 88 | { |
Victor Stinner | 7105e9f | 2016-03-15 14:28:04 +0100 | [diff] [blame] | 89 | /* filename cannot be NULL: "<unknown>" is used if the Python frame |
| 90 | filename is NULL */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 91 | PyObject *filename; |
Victor Stinner | 9528334 | 2016-03-15 21:57:02 +0100 | [diff] [blame] | 92 | unsigned int lineno; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 93 | } frame_t; |
Segev Finer | 3924377 | 2017-07-25 11:47:43 +0300 | [diff] [blame] | 94 | #ifdef _MSC_VER |
| 95 | #pragma pack(pop) |
| 96 | #endif |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 97 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 98 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 99 | typedef struct { |
| 100 | Py_uhash_t hash; |
| 101 | int nframe; |
| 102 | frame_t frames[1]; |
| 103 | } traceback_t; |
| 104 | |
| 105 | #define TRACEBACK_SIZE(NFRAME) \ |
| 106 | (sizeof(traceback_t) + sizeof(frame_t) * (NFRAME - 1)) |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 107 | |
| 108 | #define MAX_NFRAME \ |
Victor Stinner | 52aee85 | 2014-08-16 15:44:02 +0200 | [diff] [blame] | 109 | ((INT_MAX - (int)sizeof(traceback_t)) / (int)sizeof(frame_t) + 1) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 110 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 111 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 112 | static PyObject *unknown_filename = NULL; |
| 113 | static traceback_t tracemalloc_empty_traceback; |
| 114 | |
Victor Stinner | 7a5be14 | 2013-11-26 01:06:02 +0100 | [diff] [blame] | 115 | /* Trace of a memory block */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 116 | typedef struct { |
Victor Stinner | 7a5be14 | 2013-11-26 01:06:02 +0100 | [diff] [blame] | 117 | /* Size of the memory block in bytes */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 118 | size_t size; |
Victor Stinner | 7a5be14 | 2013-11-26 01:06:02 +0100 | [diff] [blame] | 119 | |
| 120 | /* Traceback where the memory block was allocated */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 121 | traceback_t *traceback; |
| 122 | } trace_t; |
| 123 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 124 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 125 | /* Size in bytes of currently traced memory. |
| 126 | Protected by TABLES_LOCK(). */ |
| 127 | static size_t tracemalloc_traced_memory = 0; |
| 128 | |
Victor Stinner | 3c0481d | 2013-11-27 21:39:49 +0100 | [diff] [blame] | 129 | /* Peak size in bytes of traced memory. |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 130 | Protected by TABLES_LOCK(). */ |
Victor Stinner | 3c0481d | 2013-11-27 21:39:49 +0100 | [diff] [blame] | 131 | static size_t tracemalloc_peak_traced_memory = 0; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 132 | |
Serhiy Storchaka | 56a6d85 | 2014-12-01 18:28:43 +0200 | [diff] [blame] | 133 | /* Hash table used as a set to intern filenames: |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 134 | PyObject* => PyObject*. |
| 135 | Protected by the GIL */ |
| 136 | static _Py_hashtable_t *tracemalloc_filenames = NULL; |
| 137 | |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 138 | /* Buffer to store a new traceback in traceback_new(). |
| 139 | Protected by the GIL. */ |
| 140 | static traceback_t *tracemalloc_traceback = NULL; |
| 141 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 142 | /* Hash table used as a set to intern tracebacks: |
| 143 | traceback_t* => traceback_t* |
| 144 | Protected by the GIL */ |
| 145 | static _Py_hashtable_t *tracemalloc_tracebacks = NULL; |
| 146 | |
| 147 | /* pointer (void*) => trace (trace_t). |
| 148 | Protected by TABLES_LOCK(). */ |
| 149 | static _Py_hashtable_t *tracemalloc_traces = NULL; |
| 150 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 151 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 152 | #ifdef TRACE_DEBUG |
| 153 | static void |
| 154 | tracemalloc_error(const char *format, ...) |
| 155 | { |
| 156 | va_list ap; |
| 157 | fprintf(stderr, "tracemalloc: "); |
| 158 | va_start(ap, format); |
| 159 | vfprintf(stderr, format, ap); |
| 160 | va_end(ap); |
| 161 | fprintf(stderr, "\n"); |
| 162 | fflush(stderr); |
| 163 | } |
| 164 | #endif |
| 165 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 166 | |
Antoine Pitrou | a6a4dc8 | 2017-09-07 18:56:24 +0200 | [diff] [blame] | 167 | #if defined(TRACE_RAW_MALLOC) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 168 | #define REENTRANT_THREADLOCAL |
| 169 | |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 170 | static Py_tss_t tracemalloc_reentrant_key = Py_tss_NEEDS_INIT; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 171 | |
| 172 | /* Any non-NULL pointer can be used */ |
| 173 | #define REENTRANT Py_True |
| 174 | |
| 175 | static int |
| 176 | get_reentrant(void) |
| 177 | { |
Victor Stinner | 4a06647 | 2016-03-22 17:45:09 +0100 | [diff] [blame] | 178 | void *ptr; |
| 179 | |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 180 | assert(PyThread_tss_is_created(&tracemalloc_reentrant_key)); |
| 181 | ptr = PyThread_tss_get(&tracemalloc_reentrant_key); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 182 | if (ptr != NULL) { |
| 183 | assert(ptr == REENTRANT); |
| 184 | return 1; |
| 185 | } |
| 186 | else |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static void |
| 191 | set_reentrant(int reentrant) |
| 192 | { |
Victor Stinner | 2ead3d2 | 2013-11-26 01:08:53 +0100 | [diff] [blame] | 193 | assert(reentrant == 0 || reentrant == 1); |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 194 | assert(PyThread_tss_is_created(&tracemalloc_reentrant_key)); |
Victor Stinner | 4a06647 | 2016-03-22 17:45:09 +0100 | [diff] [blame] | 195 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 196 | if (reentrant) { |
Victor Stinner | 0cfc058 | 2016-03-22 17:40:07 +0100 | [diff] [blame] | 197 | assert(!get_reentrant()); |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 198 | PyThread_tss_set(&tracemalloc_reentrant_key, REENTRANT); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 199 | } |
| 200 | else { |
Victor Stinner | 0cfc058 | 2016-03-22 17:40:07 +0100 | [diff] [blame] | 201 | assert(get_reentrant()); |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 202 | PyThread_tss_set(&tracemalloc_reentrant_key, NULL); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 203 | } |
| 204 | } |
| 205 | |
| 206 | #else |
| 207 | |
Antoine Pitrou | a6a4dc8 | 2017-09-07 18:56:24 +0200 | [diff] [blame] | 208 | /* TRACE_RAW_MALLOC not defined: variable protected by the GIL */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 209 | static int tracemalloc_reentrant = 0; |
| 210 | |
| 211 | static int |
| 212 | get_reentrant(void) |
| 213 | { |
| 214 | return tracemalloc_reentrant; |
| 215 | } |
| 216 | |
| 217 | static void |
| 218 | set_reentrant(int reentrant) |
| 219 | { |
Victor Stinner | d5871e6 | 2016-03-23 00:17:04 +0100 | [diff] [blame] | 220 | assert(reentrant != tracemalloc_reentrant); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 221 | tracemalloc_reentrant = reentrant; |
| 222 | } |
| 223 | #endif |
| 224 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 225 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 226 | static Py_uhash_t |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 227 | hashtable_hash_pyobject(_Py_hashtable_t *ht, const void *pkey) |
Victor Stinner | 51b846c | 2016-03-18 21:52:22 +0100 | [diff] [blame] | 228 | { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 229 | PyObject *obj; |
| 230 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 231 | _Py_HASHTABLE_READ_KEY(ht, pkey, obj); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 232 | return PyObject_Hash(obj); |
| 233 | } |
| 234 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 235 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 236 | static int |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 237 | hashtable_compare_unicode(_Py_hashtable_t *ht, const void *pkey, |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 238 | const _Py_hashtable_entry_t *entry) |
| 239 | { |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 240 | PyObject *key1, *key2; |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 241 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 242 | _Py_HASHTABLE_READ_KEY(ht, pkey, key1); |
| 243 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, key2); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 244 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 245 | if (key1 != NULL && key2 != NULL) |
| 246 | return (PyUnicode_Compare(key1, key2) == 0); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 247 | else |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 248 | return key1 == key2; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 249 | } |
| 250 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 251 | |
| 252 | static Py_uhash_t |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 253 | hashtable_hash_pointer_t(_Py_hashtable_t *ht, const void *pkey) |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 254 | { |
| 255 | pointer_t ptr; |
| 256 | Py_uhash_t hash; |
| 257 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 258 | _Py_HASHTABLE_READ_KEY(ht, pkey, ptr); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 259 | |
| 260 | hash = (Py_uhash_t)_Py_HashPointer((void*)ptr.ptr); |
| 261 | hash ^= ptr.domain; |
| 262 | return hash; |
| 263 | } |
| 264 | |
| 265 | |
doko@ubuntu.com | bc73150 | 2016-05-18 01:06:01 +0200 | [diff] [blame] | 266 | static int |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 267 | hashtable_compare_pointer_t(_Py_hashtable_t *ht, const void *pkey, |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 268 | const _Py_hashtable_entry_t *entry) |
| 269 | { |
| 270 | pointer_t ptr1, ptr2; |
| 271 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 272 | _Py_HASHTABLE_READ_KEY(ht, pkey, ptr1); |
| 273 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, ptr2); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 274 | |
| 275 | /* compare pointer before domain, because pointer is more likely to be |
| 276 | different */ |
| 277 | return (ptr1.ptr == ptr2.ptr && ptr1.domain == ptr2.domain); |
| 278 | |
| 279 | } |
| 280 | |
| 281 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 282 | static _Py_hashtable_t * |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 283 | hashtable_new(size_t key_size, size_t data_size, |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 284 | _Py_hashtable_hash_func hash_func, |
| 285 | _Py_hashtable_compare_func compare_func) |
| 286 | { |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 287 | _Py_hashtable_allocator_t hashtable_alloc = {malloc, free}; |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 288 | return _Py_hashtable_new_full(key_size, data_size, 0, |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 289 | hash_func, compare_func, |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 290 | &hashtable_alloc); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 291 | } |
| 292 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 293 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 294 | static void* |
| 295 | raw_malloc(size_t size) |
| 296 | { |
| 297 | return allocators.raw.malloc(allocators.raw.ctx, size); |
| 298 | } |
| 299 | |
| 300 | static void |
| 301 | raw_free(void *ptr) |
| 302 | { |
| 303 | allocators.raw.free(allocators.raw.ctx, ptr); |
| 304 | } |
| 305 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 306 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 307 | static Py_uhash_t |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 308 | hashtable_hash_traceback(_Py_hashtable_t *ht, const void *pkey) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 309 | { |
Victor Stinner | b32a7ed | 2016-03-21 23:05:08 +0100 | [diff] [blame] | 310 | traceback_t *traceback; |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 311 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 312 | _Py_HASHTABLE_READ_KEY(ht, pkey, traceback); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 313 | return traceback->hash; |
| 314 | } |
| 315 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 316 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 317 | static int |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 318 | hashtable_compare_traceback(_Py_hashtable_t *ht, const void *pkey, |
| 319 | const _Py_hashtable_entry_t *entry) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 320 | { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 321 | traceback_t *traceback1, *traceback2; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 322 | const frame_t *frame1, *frame2; |
| 323 | int i; |
| 324 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 325 | _Py_HASHTABLE_READ_KEY(ht, pkey, traceback1); |
| 326 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, traceback2); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 327 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 328 | if (traceback1->nframe != traceback2->nframe) |
| 329 | return 0; |
| 330 | |
| 331 | for (i=0; i < traceback1->nframe; i++) { |
| 332 | frame1 = &traceback1->frames[i]; |
| 333 | frame2 = &traceback2->frames[i]; |
| 334 | |
| 335 | if (frame1->lineno != frame2->lineno) |
| 336 | return 0; |
| 337 | |
| 338 | if (frame1->filename != frame2->filename) { |
| 339 | assert(PyUnicode_Compare(frame1->filename, frame2->filename) != 0); |
| 340 | return 0; |
| 341 | } |
| 342 | } |
| 343 | return 1; |
| 344 | } |
| 345 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 346 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 347 | static void |
| 348 | tracemalloc_get_frame(PyFrameObject *pyframe, frame_t *frame) |
| 349 | { |
| 350 | PyCodeObject *code; |
| 351 | PyObject *filename; |
| 352 | _Py_hashtable_entry_t *entry; |
Victor Stinner | 9528334 | 2016-03-15 21:57:02 +0100 | [diff] [blame] | 353 | int lineno; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 354 | |
| 355 | frame->filename = unknown_filename; |
Victor Stinner | 9528334 | 2016-03-15 21:57:02 +0100 | [diff] [blame] | 356 | lineno = PyFrame_GetLineNumber(pyframe); |
| 357 | if (lineno < 0) |
| 358 | lineno = 0; |
| 359 | frame->lineno = (unsigned int)lineno; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 360 | |
| 361 | code = pyframe->f_code; |
| 362 | if (code == NULL) { |
| 363 | #ifdef TRACE_DEBUG |
Victor Stinner | 4dc7420 | 2013-11-26 01:18:52 +0100 | [diff] [blame] | 364 | tracemalloc_error("failed to get the code object of the frame"); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 365 | #endif |
| 366 | return; |
| 367 | } |
| 368 | |
| 369 | if (code->co_filename == NULL) { |
| 370 | #ifdef TRACE_DEBUG |
| 371 | tracemalloc_error("failed to get the filename of the code object"); |
| 372 | #endif |
| 373 | return; |
| 374 | } |
| 375 | |
| 376 | filename = code->co_filename; |
| 377 | assert(filename != NULL); |
| 378 | if (filename == NULL) |
| 379 | return; |
| 380 | |
| 381 | if (!PyUnicode_Check(filename)) { |
| 382 | #ifdef TRACE_DEBUG |
Martin Panter | 6245cb3 | 2016-04-15 02:14:19 +0000 | [diff] [blame] | 383 | tracemalloc_error("filename is not a unicode string"); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 384 | #endif |
| 385 | return; |
| 386 | } |
| 387 | if (!PyUnicode_IS_READY(filename)) { |
| 388 | /* Don't make a Unicode string ready to avoid reentrant calls |
| 389 | to tracemalloc_malloc() or tracemalloc_realloc() */ |
| 390 | #ifdef TRACE_DEBUG |
| 391 | tracemalloc_error("filename is not a ready unicode string"); |
| 392 | #endif |
| 393 | return; |
| 394 | } |
| 395 | |
| 396 | /* intern the filename */ |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 397 | entry = _Py_HASHTABLE_GET_ENTRY(tracemalloc_filenames, filename); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 398 | if (entry != NULL) { |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 399 | _Py_HASHTABLE_ENTRY_READ_KEY(tracemalloc_filenames, entry, filename); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 400 | } |
| 401 | else { |
| 402 | /* tracemalloc_filenames is responsible to keep a reference |
| 403 | to the filename */ |
| 404 | Py_INCREF(filename); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 405 | if (_Py_HASHTABLE_SET_NODATA(tracemalloc_filenames, filename) < 0) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 406 | Py_DECREF(filename); |
| 407 | #ifdef TRACE_DEBUG |
| 408 | tracemalloc_error("failed to intern the filename"); |
| 409 | #endif |
| 410 | return; |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | /* the tracemalloc_filenames table keeps a reference to the filename */ |
| 415 | frame->filename = filename; |
| 416 | } |
| 417 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 418 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 419 | static Py_uhash_t |
| 420 | traceback_hash(traceback_t *traceback) |
| 421 | { |
| 422 | /* code based on tuplehash() of Objects/tupleobject.c */ |
Victor Stinner | 4d8c29c | 2013-12-16 23:05:13 +0100 | [diff] [blame] | 423 | Py_uhash_t x, y; /* Unsigned for defined overflow behavior. */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 424 | int len = traceback->nframe; |
| 425 | Py_uhash_t mult = _PyHASH_MULTIPLIER; |
| 426 | frame_t *frame; |
| 427 | |
| 428 | x = 0x345678UL; |
| 429 | frame = traceback->frames; |
| 430 | while (--len >= 0) { |
Victor Stinner | 4d8c29c | 2013-12-16 23:05:13 +0100 | [diff] [blame] | 431 | y = (Py_uhash_t)PyObject_Hash(frame->filename); |
| 432 | y ^= (Py_uhash_t)frame->lineno; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 433 | frame++; |
| 434 | |
| 435 | x = (x ^ y) * mult; |
| 436 | /* the cast might truncate len; that doesn't change hash stability */ |
Victor Stinner | 4d8c29c | 2013-12-16 23:05:13 +0100 | [diff] [blame] | 437 | mult += (Py_uhash_t)(82520UL + len + len); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 438 | } |
| 439 | x += 97531UL; |
| 440 | return x; |
| 441 | } |
| 442 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 443 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 444 | static void |
| 445 | traceback_get_frames(traceback_t *traceback) |
| 446 | { |
| 447 | PyThreadState *tstate; |
| 448 | PyFrameObject *pyframe; |
| 449 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 450 | tstate = PyGILState_GetThisThreadState(); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 451 | if (tstate == NULL) { |
| 452 | #ifdef TRACE_DEBUG |
| 453 | tracemalloc_error("failed to get the current thread state"); |
| 454 | #endif |
| 455 | return; |
| 456 | } |
| 457 | |
| 458 | for (pyframe = tstate->frame; pyframe != NULL; pyframe = pyframe->f_back) { |
| 459 | tracemalloc_get_frame(pyframe, &traceback->frames[traceback->nframe]); |
| 460 | assert(traceback->frames[traceback->nframe].filename != NULL); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 461 | traceback->nframe++; |
| 462 | if (traceback->nframe == tracemalloc_config.max_nframe) |
| 463 | break; |
| 464 | } |
| 465 | } |
| 466 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 467 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 468 | static traceback_t * |
| 469 | traceback_new(void) |
| 470 | { |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 471 | traceback_t *traceback; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 472 | _Py_hashtable_entry_t *entry; |
| 473 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 474 | assert(PyGILState_Check()); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 475 | |
| 476 | /* get frames */ |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 477 | traceback = tracemalloc_traceback; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 478 | traceback->nframe = 0; |
| 479 | traceback_get_frames(traceback); |
| 480 | if (traceback->nframe == 0) |
| 481 | return &tracemalloc_empty_traceback; |
| 482 | traceback->hash = traceback_hash(traceback); |
| 483 | |
| 484 | /* intern the traceback */ |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 485 | entry = _Py_HASHTABLE_GET_ENTRY(tracemalloc_tracebacks, traceback); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 486 | if (entry != NULL) { |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 487 | _Py_HASHTABLE_ENTRY_READ_KEY(tracemalloc_tracebacks, entry, traceback); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 488 | } |
| 489 | else { |
| 490 | traceback_t *copy; |
| 491 | size_t traceback_size; |
| 492 | |
| 493 | traceback_size = TRACEBACK_SIZE(traceback->nframe); |
| 494 | |
| 495 | copy = raw_malloc(traceback_size); |
| 496 | if (copy == NULL) { |
| 497 | #ifdef TRACE_DEBUG |
| 498 | tracemalloc_error("failed to intern the traceback: malloc failed"); |
| 499 | #endif |
| 500 | return NULL; |
| 501 | } |
| 502 | memcpy(copy, traceback, traceback_size); |
| 503 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 504 | if (_Py_HASHTABLE_SET_NODATA(tracemalloc_tracebacks, copy) < 0) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 505 | raw_free(copy); |
| 506 | #ifdef TRACE_DEBUG |
| 507 | tracemalloc_error("failed to intern the traceback: putdata failed"); |
| 508 | #endif |
| 509 | return NULL; |
| 510 | } |
| 511 | traceback = copy; |
| 512 | } |
| 513 | return traceback; |
| 514 | } |
| 515 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 516 | |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 517 | static int |
| 518 | tracemalloc_use_domain_cb(_Py_hashtable_t *old_traces, |
| 519 | _Py_hashtable_entry_t *entry, void *user_data) |
| 520 | { |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 521 | uintptr_t ptr; |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 522 | pointer_t key; |
| 523 | _Py_hashtable_t *new_traces = (_Py_hashtable_t *)user_data; |
| 524 | const void *pdata = _Py_HASHTABLE_ENTRY_PDATA(old_traces, entry); |
| 525 | |
| 526 | _Py_HASHTABLE_ENTRY_READ_KEY(old_traces, entry, ptr); |
| 527 | key.ptr = ptr; |
| 528 | key.domain = DEFAULT_DOMAIN; |
| 529 | |
| 530 | return _Py_hashtable_set(new_traces, |
| 531 | sizeof(key), &key, |
| 532 | old_traces->data_size, pdata); |
| 533 | } |
| 534 | |
| 535 | |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 536 | /* Convert tracemalloc_traces from compact key (uintptr_t) to pointer_t key. |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 537 | * Return 0 on success, -1 on error. */ |
| 538 | static int |
| 539 | tracemalloc_use_domain(void) |
| 540 | { |
| 541 | _Py_hashtable_t *new_traces = NULL; |
| 542 | |
| 543 | assert(!tracemalloc_config.use_domain); |
| 544 | |
| 545 | new_traces = hashtable_new(sizeof(pointer_t), |
| 546 | sizeof(trace_t), |
| 547 | hashtable_hash_pointer_t, |
| 548 | hashtable_compare_pointer_t); |
| 549 | if (new_traces == NULL) { |
| 550 | return -1; |
| 551 | } |
| 552 | |
| 553 | if (_Py_hashtable_foreach(tracemalloc_traces, tracemalloc_use_domain_cb, |
| 554 | new_traces) < 0) |
| 555 | { |
| 556 | _Py_hashtable_destroy(new_traces); |
| 557 | return -1; |
| 558 | } |
| 559 | |
| 560 | _Py_hashtable_destroy(tracemalloc_traces); |
| 561 | tracemalloc_traces = new_traces; |
| 562 | |
| 563 | tracemalloc_config.use_domain = 1; |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
| 568 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 569 | static void |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 570 | tracemalloc_remove_trace(unsigned int domain, uintptr_t ptr) |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 571 | { |
| 572 | trace_t trace; |
| 573 | int removed; |
| 574 | |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 575 | assert(tracemalloc_config.tracing); |
| 576 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 577 | if (tracemalloc_config.use_domain) { |
| 578 | pointer_t key = {ptr, domain}; |
| 579 | removed = _Py_HASHTABLE_POP(tracemalloc_traces, key, trace); |
| 580 | } |
| 581 | else { |
| 582 | removed = _Py_HASHTABLE_POP(tracemalloc_traces, ptr, trace); |
| 583 | } |
| 584 | if (!removed) { |
| 585 | return; |
| 586 | } |
| 587 | |
| 588 | assert(tracemalloc_traced_memory >= trace.size); |
| 589 | tracemalloc_traced_memory -= trace.size; |
| 590 | } |
| 591 | |
| 592 | #define REMOVE_TRACE(ptr) \ |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 593 | tracemalloc_remove_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr)) |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 594 | |
| 595 | |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 596 | static int |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 597 | tracemalloc_add_trace(unsigned int domain, uintptr_t ptr, |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 598 | size_t size) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 599 | { |
Victor Stinner | ca79ccd | 2016-03-23 09:38:54 +0100 | [diff] [blame] | 600 | pointer_t key = {ptr, domain}; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 601 | traceback_t *traceback; |
| 602 | trace_t trace; |
Victor Stinner | ca79ccd | 2016-03-23 09:38:54 +0100 | [diff] [blame] | 603 | _Py_hashtable_entry_t* entry; |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 604 | int res; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 605 | |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 606 | assert(tracemalloc_config.tracing); |
| 607 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 608 | traceback = traceback_new(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 609 | if (traceback == NULL) { |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 610 | return -1; |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 611 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 612 | |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 613 | if (!tracemalloc_config.use_domain && domain != DEFAULT_DOMAIN) { |
| 614 | /* first trace using a non-zero domain whereas traces use compact |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 615 | (uintptr_t) keys: switch to pointer_t keys. */ |
Victor Stinner | 5e14a38 | 2016-03-23 22:03:55 +0100 | [diff] [blame] | 616 | if (tracemalloc_use_domain() < 0) { |
| 617 | return -1; |
| 618 | } |
| 619 | } |
| 620 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 621 | if (tracemalloc_config.use_domain) { |
Victor Stinner | ca79ccd | 2016-03-23 09:38:54 +0100 | [diff] [blame] | 622 | entry = _Py_HASHTABLE_GET_ENTRY(tracemalloc_traces, key); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 623 | } |
| 624 | else { |
Victor Stinner | ca79ccd | 2016-03-23 09:38:54 +0100 | [diff] [blame] | 625 | entry = _Py_HASHTABLE_GET_ENTRY(tracemalloc_traces, ptr); |
Victor Stinner | d606ba7 | 2013-11-24 11:28:20 +0100 | [diff] [blame] | 626 | } |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 627 | |
Victor Stinner | ca79ccd | 2016-03-23 09:38:54 +0100 | [diff] [blame] | 628 | if (entry != NULL) { |
| 629 | /* the memory block is already tracked */ |
| 630 | _Py_HASHTABLE_ENTRY_READ_DATA(tracemalloc_traces, entry, trace); |
| 631 | assert(tracemalloc_traced_memory >= trace.size); |
| 632 | tracemalloc_traced_memory -= trace.size; |
| 633 | |
| 634 | trace.size = size; |
| 635 | trace.traceback = traceback; |
| 636 | _Py_HASHTABLE_ENTRY_WRITE_DATA(tracemalloc_traces, entry, trace); |
| 637 | } |
| 638 | else { |
| 639 | trace.size = size; |
| 640 | trace.traceback = traceback; |
| 641 | |
| 642 | if (tracemalloc_config.use_domain) { |
| 643 | res = _Py_HASHTABLE_SET(tracemalloc_traces, key, trace); |
| 644 | } |
| 645 | else { |
| 646 | res = _Py_HASHTABLE_SET(tracemalloc_traces, ptr, trace); |
| 647 | } |
| 648 | if (res != 0) { |
| 649 | return res; |
| 650 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 651 | } |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 652 | |
Benjamin Peterson | 2f8bfef | 2016-09-07 09:26:18 -0700 | [diff] [blame] | 653 | assert(tracemalloc_traced_memory <= SIZE_MAX - size); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 654 | tracemalloc_traced_memory += size; |
| 655 | if (tracemalloc_traced_memory > tracemalloc_peak_traced_memory) |
| 656 | tracemalloc_peak_traced_memory = tracemalloc_traced_memory; |
| 657 | return 0; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 658 | } |
| 659 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 660 | #define ADD_TRACE(ptr, size) \ |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 661 | tracemalloc_add_trace(DEFAULT_DOMAIN, (uintptr_t)(ptr), size) |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 662 | |
| 663 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 664 | static void* |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 665 | tracemalloc_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 666 | { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 667 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 668 | void *ptr; |
| 669 | |
Benjamin Peterson | 2f8bfef | 2016-09-07 09:26:18 -0700 | [diff] [blame] | 670 | assert(elsize == 0 || nelem <= SIZE_MAX / elsize); |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 671 | |
| 672 | if (use_calloc) |
| 673 | ptr = alloc->calloc(alloc->ctx, nelem, elsize); |
| 674 | else |
| 675 | ptr = alloc->malloc(alloc->ctx, nelem * elsize); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 676 | if (ptr == NULL) |
| 677 | return NULL; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 678 | |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 679 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 680 | if (ADD_TRACE(ptr, nelem * elsize) < 0) { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 681 | /* Failed to allocate a trace for the new memory block */ |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 682 | TABLES_UNLOCK(); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 683 | alloc->free(alloc->ctx, ptr); |
| 684 | return NULL; |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 685 | } |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 686 | TABLES_UNLOCK(); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 687 | return ptr; |
| 688 | } |
| 689 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 690 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 691 | static void* |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 692 | tracemalloc_realloc(void *ctx, void *ptr, size_t new_size) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 693 | { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 694 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 695 | void *ptr2; |
| 696 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 697 | ptr2 = alloc->realloc(alloc->ctx, ptr, new_size); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 698 | if (ptr2 == NULL) |
| 699 | return NULL; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 700 | |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 701 | if (ptr != NULL) { |
| 702 | /* an existing memory block has been resized */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 703 | |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 704 | TABLES_LOCK(); |
Victor Stinner | 42bcf37 | 2016-03-23 09:08:08 +0100 | [diff] [blame] | 705 | |
| 706 | /* tracemalloc_add_trace() updates the trace if there is already |
| 707 | a trace at address (domain, ptr2) */ |
| 708 | if (ptr2 != ptr) { |
| 709 | REMOVE_TRACE(ptr); |
| 710 | } |
Victor Stinner | 08facd2 | 2013-11-24 12:27:59 +0100 | [diff] [blame] | 711 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 712 | if (ADD_TRACE(ptr2, new_size) < 0) { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 713 | /* Memory allocation failed. The error cannot be reported to |
Raymond Hettinger | 15f44ab | 2016-08-30 10:47:49 -0700 | [diff] [blame] | 714 | the caller, because realloc() may already have shrunk the |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 715 | memory block and so removed bytes. |
| 716 | |
Serhiy Storchaka | 6a7b3a7 | 2016-04-17 08:32:47 +0300 | [diff] [blame] | 717 | This case is very unlikely: a hash entry has just been |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 718 | released, so the hash table should have at least one free entry. |
| 719 | |
| 720 | The GIL and the table lock ensures that only one thread is |
| 721 | allocating memory. */ |
Barry Warsaw | b2e5794 | 2017-09-14 18:13:16 -0700 | [diff] [blame] | 722 | Py_UNREACHABLE(); |
Victor Stinner | 5296867 | 2013-11-24 11:37:15 +0100 | [diff] [blame] | 723 | } |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 724 | TABLES_UNLOCK(); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 725 | } |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 726 | else { |
| 727 | /* new allocation */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 728 | |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 729 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 730 | if (ADD_TRACE(ptr2, new_size) < 0) { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 731 | /* Failed to allocate a trace for the new memory block */ |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 732 | TABLES_UNLOCK(); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 733 | alloc->free(alloc->ctx, ptr2); |
| 734 | return NULL; |
| 735 | } |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 736 | TABLES_UNLOCK(); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 737 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 738 | return ptr2; |
| 739 | } |
| 740 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 741 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 742 | static void |
| 743 | tracemalloc_free(void *ctx, void *ptr) |
| 744 | { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 745 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 746 | |
| 747 | if (ptr == NULL) |
| 748 | return; |
| 749 | |
| 750 | /* GIL cannot be locked in PyMem_RawFree() because it would introduce |
| 751 | a deadlock in PyThreadState_DeleteCurrent(). */ |
| 752 | |
| 753 | alloc->free(alloc->ctx, ptr); |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 754 | |
| 755 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 756 | REMOVE_TRACE(ptr); |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 757 | TABLES_UNLOCK(); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 758 | } |
| 759 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 760 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 761 | static void* |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 762 | tracemalloc_alloc_gil(int use_calloc, void *ctx, size_t nelem, size_t elsize) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 763 | { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 764 | void *ptr; |
| 765 | |
| 766 | if (get_reentrant()) { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 767 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 768 | if (use_calloc) |
| 769 | return alloc->calloc(alloc->ctx, nelem, elsize); |
| 770 | else |
| 771 | return alloc->malloc(alloc->ctx, nelem * elsize); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | /* Ignore reentrant call. PyObjet_Malloc() calls PyMem_Malloc() for |
| 775 | allocations larger than 512 bytes, don't trace the same memory |
| 776 | allocation twice. */ |
| 777 | set_reentrant(1); |
| 778 | |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 779 | ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 780 | |
| 781 | set_reentrant(0); |
| 782 | return ptr; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 783 | } |
| 784 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 785 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 786 | static void* |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 787 | tracemalloc_malloc_gil(void *ctx, size_t size) |
| 788 | { |
| 789 | return tracemalloc_alloc_gil(0, ctx, 1, size); |
| 790 | } |
| 791 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 792 | |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 793 | static void* |
| 794 | tracemalloc_calloc_gil(void *ctx, size_t nelem, size_t elsize) |
| 795 | { |
| 796 | return tracemalloc_alloc_gil(1, ctx, nelem, elsize); |
| 797 | } |
| 798 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 799 | |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 800 | static void* |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 801 | tracemalloc_realloc_gil(void *ctx, void *ptr, size_t new_size) |
| 802 | { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 803 | void *ptr2; |
| 804 | |
| 805 | if (get_reentrant()) { |
| 806 | /* Reentrant call to PyMem_Realloc() and PyMem_RawRealloc(). |
| 807 | Example: PyMem_RawRealloc() is called internally by pymalloc |
| 808 | (_PyObject_Malloc() and _PyObject_Realloc()) to allocate a new |
| 809 | arena (new_arena()). */ |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 810 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 811 | |
| 812 | ptr2 = alloc->realloc(alloc->ctx, ptr, new_size); |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 813 | if (ptr2 != NULL && ptr != NULL) { |
| 814 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 815 | REMOVE_TRACE(ptr); |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 816 | TABLES_UNLOCK(); |
| 817 | } |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 818 | return ptr2; |
| 819 | } |
| 820 | |
| 821 | /* Ignore reentrant call. PyObjet_Realloc() calls PyMem_Realloc() for |
| 822 | allocations larger than 512 bytes. Don't trace the same memory |
| 823 | allocation twice. */ |
| 824 | set_reentrant(1); |
| 825 | |
| 826 | ptr2 = tracemalloc_realloc(ctx, ptr, new_size); |
| 827 | |
| 828 | set_reentrant(0); |
| 829 | return ptr2; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 830 | } |
| 831 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 832 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 833 | #ifdef TRACE_RAW_MALLOC |
| 834 | static void* |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 835 | tracemalloc_raw_alloc(int use_calloc, void *ctx, size_t nelem, size_t elsize) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 836 | { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 837 | PyGILState_STATE gil_state; |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 838 | void *ptr; |
| 839 | |
| 840 | if (get_reentrant()) { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 841 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 842 | if (use_calloc) |
| 843 | return alloc->calloc(alloc->ctx, nelem, elsize); |
| 844 | else |
| 845 | return alloc->malloc(alloc->ctx, nelem * elsize); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc() |
| 849 | indirectly which would call PyGILState_Ensure() if reentrant are not |
| 850 | disabled. */ |
| 851 | set_reentrant(1); |
| 852 | |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 853 | gil_state = PyGILState_Ensure(); |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 854 | ptr = tracemalloc_alloc(use_calloc, ctx, nelem, elsize); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 855 | PyGILState_Release(gil_state); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 856 | |
| 857 | set_reentrant(0); |
| 858 | return ptr; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 859 | } |
| 860 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 861 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 862 | static void* |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 863 | tracemalloc_raw_malloc(void *ctx, size_t size) |
| 864 | { |
| 865 | return tracemalloc_raw_alloc(0, ctx, 1, size); |
| 866 | } |
| 867 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 868 | |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 869 | static void* |
| 870 | tracemalloc_raw_calloc(void *ctx, size_t nelem, size_t elsize) |
| 871 | { |
| 872 | return tracemalloc_raw_alloc(1, ctx, nelem, elsize); |
| 873 | } |
| 874 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 875 | |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 876 | static void* |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 877 | tracemalloc_raw_realloc(void *ctx, void *ptr, size_t new_size) |
| 878 | { |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 879 | PyGILState_STATE gil_state; |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 880 | void *ptr2; |
| 881 | |
| 882 | if (get_reentrant()) { |
| 883 | /* Reentrant call to PyMem_RawRealloc(). */ |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 884 | PyMemAllocatorEx *alloc = (PyMemAllocatorEx *)ctx; |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 885 | |
| 886 | ptr2 = alloc->realloc(alloc->ctx, ptr, new_size); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 887 | |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 888 | if (ptr2 != NULL && ptr != NULL) { |
| 889 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 890 | REMOVE_TRACE(ptr); |
Victor Stinner | 88c2987 | 2013-12-04 01:47:46 +0100 | [diff] [blame] | 891 | TABLES_UNLOCK(); |
| 892 | } |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 893 | return ptr2; |
| 894 | } |
| 895 | |
| 896 | /* Ignore reentrant call. PyGILState_Ensure() may call PyMem_RawMalloc() |
| 897 | indirectly which would call PyGILState_Ensure() if reentrant calls are |
| 898 | not disabled. */ |
| 899 | set_reentrant(1); |
| 900 | |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 901 | gil_state = PyGILState_Ensure(); |
| 902 | ptr2 = tracemalloc_realloc(ctx, ptr, new_size); |
| 903 | PyGILState_Release(gil_state); |
Victor Stinner | 1511680 | 2013-12-04 01:29:35 +0100 | [diff] [blame] | 904 | |
| 905 | set_reentrant(0); |
| 906 | return ptr2; |
| 907 | } |
| 908 | #endif /* TRACE_RAW_MALLOC */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 909 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 910 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 911 | static int |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 912 | tracemalloc_clear_filename(_Py_hashtable_t *ht, _Py_hashtable_entry_t *entry, |
| 913 | void *user_data) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 914 | { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 915 | PyObject *filename; |
| 916 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 917 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, filename); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 918 | Py_DECREF(filename); |
| 919 | return 0; |
| 920 | } |
| 921 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 922 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 923 | static int |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 924 | traceback_free_traceback(_Py_hashtable_t *ht, _Py_hashtable_entry_t *entry, |
| 925 | void *user_data) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 926 | { |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 927 | traceback_t *traceback; |
| 928 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 929 | _Py_HASHTABLE_ENTRY_READ_KEY(ht, entry, traceback); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 930 | raw_free(traceback); |
| 931 | return 0; |
| 932 | } |
| 933 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 934 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 935 | /* reentrant flag must be set to call this function and GIL must be held */ |
| 936 | static void |
| 937 | tracemalloc_clear_traces(void) |
| 938 | { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 939 | /* The GIL protects variables againt concurrent access */ |
| 940 | assert(PyGILState_Check()); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 941 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 942 | TABLES_LOCK(); |
| 943 | _Py_hashtable_clear(tracemalloc_traces); |
| 944 | tracemalloc_traced_memory = 0; |
Victor Stinner | 3c0481d | 2013-11-27 21:39:49 +0100 | [diff] [blame] | 945 | tracemalloc_peak_traced_memory = 0; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 946 | TABLES_UNLOCK(); |
| 947 | |
| 948 | _Py_hashtable_foreach(tracemalloc_tracebacks, traceback_free_traceback, NULL); |
| 949 | _Py_hashtable_clear(tracemalloc_tracebacks); |
| 950 | |
| 951 | _Py_hashtable_foreach(tracemalloc_filenames, tracemalloc_clear_filename, NULL); |
| 952 | _Py_hashtable_clear(tracemalloc_filenames); |
| 953 | } |
| 954 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 955 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 956 | static int |
| 957 | tracemalloc_init(void) |
| 958 | { |
| 959 | if (tracemalloc_config.initialized == TRACEMALLOC_FINALIZED) { |
| 960 | PyErr_SetString(PyExc_RuntimeError, |
| 961 | "the tracemalloc module has been unloaded"); |
| 962 | return -1; |
| 963 | } |
| 964 | |
Victor Stinner | f9a7115 | 2016-03-22 23:54:42 +0100 | [diff] [blame] | 965 | if (tracemalloc_config.initialized == TRACEMALLOC_INITIALIZED) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 966 | return 0; |
| 967 | |
| 968 | PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw); |
| 969 | |
| 970 | #ifdef REENTRANT_THREADLOCAL |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 971 | if (PyThread_tss_create(&tracemalloc_reentrant_key) != 0) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 972 | #ifdef MS_WINDOWS |
| 973 | PyErr_SetFromWindowsErr(0); |
| 974 | #else |
| 975 | PyErr_SetFromErrno(PyExc_OSError); |
| 976 | #endif |
| 977 | return -1; |
| 978 | } |
| 979 | #endif |
| 980 | |
Antoine Pitrou | a6a4dc8 | 2017-09-07 18:56:24 +0200 | [diff] [blame] | 981 | #if defined(TRACE_RAW_MALLOC) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 982 | if (tables_lock == NULL) { |
| 983 | tables_lock = PyThread_allocate_lock(); |
| 984 | if (tables_lock == NULL) { |
| 985 | PyErr_SetString(PyExc_RuntimeError, "cannot allocate lock"); |
| 986 | return -1; |
| 987 | } |
| 988 | } |
| 989 | #endif |
| 990 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 991 | tracemalloc_filenames = hashtable_new(sizeof(PyObject *), 0, |
| 992 | hashtable_hash_pyobject, |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 993 | hashtable_compare_unicode); |
| 994 | |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 995 | tracemalloc_tracebacks = hashtable_new(sizeof(traceback_t *), 0, |
| 996 | hashtable_hash_traceback, |
| 997 | hashtable_compare_traceback); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 998 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 999 | if (tracemalloc_config.use_domain) { |
| 1000 | tracemalloc_traces = hashtable_new(sizeof(pointer_t), |
| 1001 | sizeof(trace_t), |
| 1002 | hashtable_hash_pointer_t, |
| 1003 | hashtable_compare_pointer_t); |
| 1004 | } |
| 1005 | else { |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 1006 | tracemalloc_traces = hashtable_new(sizeof(uintptr_t), |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1007 | sizeof(trace_t), |
| 1008 | _Py_hashtable_hash_ptr, |
| 1009 | _Py_hashtable_compare_direct); |
| 1010 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1011 | |
| 1012 | if (tracemalloc_filenames == NULL || tracemalloc_tracebacks == NULL |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1013 | || tracemalloc_traces == NULL) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1014 | PyErr_NoMemory(); |
| 1015 | return -1; |
| 1016 | } |
| 1017 | |
| 1018 | unknown_filename = PyUnicode_FromString("<unknown>"); |
| 1019 | if (unknown_filename == NULL) |
| 1020 | return -1; |
| 1021 | PyUnicode_InternInPlace(&unknown_filename); |
| 1022 | |
| 1023 | tracemalloc_empty_traceback.nframe = 1; |
| 1024 | /* borrowed reference */ |
| 1025 | tracemalloc_empty_traceback.frames[0].filename = unknown_filename; |
| 1026 | tracemalloc_empty_traceback.frames[0].lineno = 0; |
| 1027 | tracemalloc_empty_traceback.hash = traceback_hash(&tracemalloc_empty_traceback); |
| 1028 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1029 | tracemalloc_config.initialized = TRACEMALLOC_INITIALIZED; |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1033 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1034 | static void |
| 1035 | tracemalloc_deinit(void) |
| 1036 | { |
Victor Stinner | f9a7115 | 2016-03-22 23:54:42 +0100 | [diff] [blame] | 1037 | if (tracemalloc_config.initialized != TRACEMALLOC_INITIALIZED) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1038 | return; |
| 1039 | tracemalloc_config.initialized = TRACEMALLOC_FINALIZED; |
| 1040 | |
| 1041 | tracemalloc_stop(); |
| 1042 | |
| 1043 | /* destroy hash tables */ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1044 | _Py_hashtable_destroy(tracemalloc_tracebacks); |
| 1045 | _Py_hashtable_destroy(tracemalloc_filenames); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1046 | _Py_hashtable_destroy(tracemalloc_traces); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1047 | |
Antoine Pitrou | a6a4dc8 | 2017-09-07 18:56:24 +0200 | [diff] [blame] | 1048 | #if defined(TRACE_RAW_MALLOC) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1049 | if (tables_lock != NULL) { |
| 1050 | PyThread_free_lock(tables_lock); |
| 1051 | tables_lock = NULL; |
| 1052 | } |
| 1053 | #endif |
| 1054 | |
| 1055 | #ifdef REENTRANT_THREADLOCAL |
Masayuki Yamamoto | 731e189 | 2017-10-06 19:41:34 +0900 | [diff] [blame] | 1056 | PyThread_tss_delete(&tracemalloc_reentrant_key); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1057 | #endif |
| 1058 | |
| 1059 | Py_XDECREF(unknown_filename); |
| 1060 | } |
| 1061 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1062 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1063 | static int |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 1064 | tracemalloc_start(int max_nframe) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1065 | { |
Victor Stinner | d8f0d92 | 2014-06-02 21:57:10 +0200 | [diff] [blame] | 1066 | PyMemAllocatorEx alloc; |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 1067 | size_t size; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1068 | |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1069 | if (max_nframe < 1 || max_nframe > MAX_NFRAME) { |
| 1070 | PyErr_Format(PyExc_ValueError, |
| 1071 | "the number of frames must be in range [1; %i]", |
| 1072 | (int)MAX_NFRAME); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1073 | return -1; |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1074 | } |
| 1075 | |
| 1076 | if (tracemalloc_init() < 0) { |
| 1077 | return -1; |
| 1078 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1079 | |
| 1080 | if (tracemalloc_config.tracing) { |
| 1081 | /* hook already installed: do nothing */ |
| 1082 | return 0; |
| 1083 | } |
| 1084 | |
Victor Stinner | 52aee85 | 2014-08-16 15:44:02 +0200 | [diff] [blame] | 1085 | assert(1 <= max_nframe && max_nframe <= MAX_NFRAME); |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 1086 | tracemalloc_config.max_nframe = max_nframe; |
| 1087 | |
| 1088 | /* allocate a buffer to store a new traceback */ |
| 1089 | size = TRACEBACK_SIZE(max_nframe); |
| 1090 | assert(tracemalloc_traceback == NULL); |
| 1091 | tracemalloc_traceback = raw_malloc(size); |
| 1092 | if (tracemalloc_traceback == NULL) { |
| 1093 | PyErr_NoMemory(); |
| 1094 | return -1; |
| 1095 | } |
| 1096 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1097 | #ifdef TRACE_RAW_MALLOC |
| 1098 | alloc.malloc = tracemalloc_raw_malloc; |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 1099 | alloc.calloc = tracemalloc_raw_calloc; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1100 | alloc.realloc = tracemalloc_raw_realloc; |
| 1101 | alloc.free = tracemalloc_free; |
| 1102 | |
| 1103 | alloc.ctx = &allocators.raw; |
| 1104 | PyMem_GetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw); |
| 1105 | PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &alloc); |
| 1106 | #endif |
| 1107 | |
| 1108 | alloc.malloc = tracemalloc_malloc_gil; |
Victor Stinner | db067af | 2014-05-02 22:31:14 +0200 | [diff] [blame] | 1109 | alloc.calloc = tracemalloc_calloc_gil; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1110 | alloc.realloc = tracemalloc_realloc_gil; |
| 1111 | alloc.free = tracemalloc_free; |
| 1112 | |
| 1113 | alloc.ctx = &allocators.mem; |
| 1114 | PyMem_GetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem); |
| 1115 | PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &alloc); |
| 1116 | |
| 1117 | alloc.ctx = &allocators.obj; |
| 1118 | PyMem_GetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj); |
| 1119 | PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &alloc); |
| 1120 | |
| 1121 | /* everything is ready: start tracing Python memory allocations */ |
| 1122 | tracemalloc_config.tracing = 1; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1123 | |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1127 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1128 | static void |
| 1129 | tracemalloc_stop(void) |
| 1130 | { |
Victor Stinner | f9a7115 | 2016-03-22 23:54:42 +0100 | [diff] [blame] | 1131 | if (!tracemalloc_config.tracing) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1132 | return; |
| 1133 | |
| 1134 | /* stop tracing Python memory allocations */ |
| 1135 | tracemalloc_config.tracing = 0; |
| 1136 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1137 | /* unregister the hook on memory allocators */ |
| 1138 | #ifdef TRACE_RAW_MALLOC |
| 1139 | PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &allocators.raw); |
| 1140 | #endif |
| 1141 | PyMem_SetAllocator(PYMEM_DOMAIN_MEM, &allocators.mem); |
| 1142 | PyMem_SetAllocator(PYMEM_DOMAIN_OBJ, &allocators.obj); |
| 1143 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1144 | tracemalloc_clear_traces(); |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1145 | |
| 1146 | /* release memory */ |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 1147 | raw_free(tracemalloc_traceback); |
| 1148 | tracemalloc_traceback = NULL; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1149 | } |
| 1150 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1151 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1152 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1153 | /*[clinic input] |
| 1154 | _tracemalloc.is_tracing |
| 1155 | |
| 1156 | Return True if the tracemalloc module is tracing Python memory allocations. |
| 1157 | [clinic start generated code]*/ |
| 1158 | |
| 1159 | static PyObject * |
| 1160 | _tracemalloc_is_tracing_impl(PyObject *module) |
Serhiy Storchaka | 9735384 | 2017-02-05 22:58:46 +0200 | [diff] [blame] | 1161 | /*[clinic end generated code: output=2d763b42601cd3ef input=af104b0a00192f63]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1162 | { |
| 1163 | return PyBool_FromLong(tracemalloc_config.tracing); |
| 1164 | } |
| 1165 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1166 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1167 | /*[clinic input] |
| 1168 | _tracemalloc.clear_traces |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1169 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1170 | Clear traces of memory blocks allocated by Python. |
| 1171 | [clinic start generated code]*/ |
| 1172 | |
| 1173 | static PyObject * |
| 1174 | _tracemalloc_clear_traces_impl(PyObject *module) |
| 1175 | /*[clinic end generated code: output=a86080ee41b84197 input=0dab5b6c785183a5]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1176 | { |
| 1177 | if (!tracemalloc_config.tracing) |
| 1178 | Py_RETURN_NONE; |
| 1179 | |
| 1180 | set_reentrant(1); |
| 1181 | tracemalloc_clear_traces(); |
| 1182 | set_reentrant(0); |
| 1183 | |
| 1184 | Py_RETURN_NONE; |
| 1185 | } |
| 1186 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1187 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1188 | static PyObject* |
| 1189 | frame_to_pyobject(frame_t *frame) |
| 1190 | { |
| 1191 | PyObject *frame_obj, *lineno_obj; |
| 1192 | |
| 1193 | frame_obj = PyTuple_New(2); |
| 1194 | if (frame_obj == NULL) |
| 1195 | return NULL; |
| 1196 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1197 | Py_INCREF(frame->filename); |
| 1198 | PyTuple_SET_ITEM(frame_obj, 0, frame->filename); |
| 1199 | |
Victor Stinner | 9528334 | 2016-03-15 21:57:02 +0100 | [diff] [blame] | 1200 | lineno_obj = PyLong_FromUnsignedLong(frame->lineno); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1201 | if (lineno_obj == NULL) { |
| 1202 | Py_DECREF(frame_obj); |
| 1203 | return NULL; |
| 1204 | } |
| 1205 | PyTuple_SET_ITEM(frame_obj, 1, lineno_obj); |
| 1206 | |
| 1207 | return frame_obj; |
| 1208 | } |
| 1209 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1210 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1211 | static PyObject* |
| 1212 | traceback_to_pyobject(traceback_t *traceback, _Py_hashtable_t *intern_table) |
| 1213 | { |
| 1214 | int i; |
| 1215 | PyObject *frames, *frame; |
| 1216 | |
| 1217 | if (intern_table != NULL) { |
| 1218 | if (_Py_HASHTABLE_GET(intern_table, traceback, frames)) { |
| 1219 | Py_INCREF(frames); |
| 1220 | return frames; |
| 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | frames = PyTuple_New(traceback->nframe); |
| 1225 | if (frames == NULL) |
| 1226 | return NULL; |
| 1227 | |
| 1228 | for (i=0; i < traceback->nframe; i++) { |
| 1229 | frame = frame_to_pyobject(&traceback->frames[i]); |
| 1230 | if (frame == NULL) { |
| 1231 | Py_DECREF(frames); |
| 1232 | return NULL; |
| 1233 | } |
| 1234 | PyTuple_SET_ITEM(frames, i, frame); |
| 1235 | } |
| 1236 | |
| 1237 | if (intern_table != NULL) { |
| 1238 | if (_Py_HASHTABLE_SET(intern_table, traceback, frames) < 0) { |
| 1239 | Py_DECREF(frames); |
| 1240 | PyErr_NoMemory(); |
| 1241 | return NULL; |
| 1242 | } |
| 1243 | /* intern_table keeps a new reference to frames */ |
| 1244 | Py_INCREF(frames); |
| 1245 | } |
| 1246 | return frames; |
| 1247 | } |
| 1248 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1249 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1250 | static PyObject* |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1251 | trace_to_pyobject(unsigned int domain, trace_t *trace, |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1252 | _Py_hashtable_t *intern_tracebacks) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1253 | { |
| 1254 | PyObject *trace_obj = NULL; |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1255 | PyObject *obj; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1256 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1257 | trace_obj = PyTuple_New(3); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1258 | if (trace_obj == NULL) |
| 1259 | return NULL; |
| 1260 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1261 | obj = PyLong_FromSize_t(domain); |
| 1262 | if (obj == NULL) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1263 | Py_DECREF(trace_obj); |
| 1264 | return NULL; |
| 1265 | } |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1266 | PyTuple_SET_ITEM(trace_obj, 0, obj); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1267 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1268 | obj = PyLong_FromSize_t(trace->size); |
| 1269 | if (obj == NULL) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1270 | Py_DECREF(trace_obj); |
| 1271 | return NULL; |
| 1272 | } |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1273 | PyTuple_SET_ITEM(trace_obj, 1, obj); |
| 1274 | |
| 1275 | obj = traceback_to_pyobject(trace->traceback, intern_tracebacks); |
| 1276 | if (obj == NULL) { |
| 1277 | Py_DECREF(trace_obj); |
| 1278 | return NULL; |
| 1279 | } |
| 1280 | PyTuple_SET_ITEM(trace_obj, 2, obj); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1281 | |
| 1282 | return trace_obj; |
| 1283 | } |
| 1284 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1285 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1286 | typedef struct { |
| 1287 | _Py_hashtable_t *traces; |
| 1288 | _Py_hashtable_t *tracebacks; |
| 1289 | PyObject *list; |
| 1290 | } get_traces_t; |
| 1291 | |
| 1292 | static int |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1293 | tracemalloc_get_traces_fill(_Py_hashtable_t *traces, _Py_hashtable_entry_t *entry, |
| 1294 | void *user_data) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1295 | { |
| 1296 | get_traces_t *get_traces = user_data; |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1297 | unsigned int domain; |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 1298 | trace_t trace; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1299 | PyObject *tracemalloc_obj; |
| 1300 | int res; |
| 1301 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1302 | if (tracemalloc_config.use_domain) { |
| 1303 | pointer_t key; |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 1304 | _Py_HASHTABLE_ENTRY_READ_KEY(traces, entry, key); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1305 | domain = key.domain; |
| 1306 | } |
| 1307 | else { |
| 1308 | domain = DEFAULT_DOMAIN; |
| 1309 | } |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 1310 | _Py_HASHTABLE_ENTRY_READ_DATA(traces, entry, trace); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1311 | |
Victor Stinner | 5dacbd4 | 2016-03-23 09:52:13 +0100 | [diff] [blame] | 1312 | tracemalloc_obj = trace_to_pyobject(domain, &trace, get_traces->tracebacks); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1313 | if (tracemalloc_obj == NULL) |
| 1314 | return 1; |
| 1315 | |
| 1316 | res = PyList_Append(get_traces->list, tracemalloc_obj); |
| 1317 | Py_DECREF(tracemalloc_obj); |
| 1318 | if (res < 0) |
| 1319 | return 1; |
| 1320 | |
| 1321 | return 0; |
| 1322 | } |
| 1323 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1324 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1325 | static int |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1326 | tracemalloc_pyobject_decref_cb(_Py_hashtable_t *tracebacks, |
| 1327 | _Py_hashtable_entry_t *entry, |
| 1328 | void *user_data) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1329 | { |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 1330 | PyObject *obj; |
Victor Stinner | e8c6b2f | 2016-03-23 09:25:01 +0100 | [diff] [blame] | 1331 | _Py_HASHTABLE_ENTRY_READ_DATA(tracebacks, entry, obj); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1332 | Py_DECREF(obj); |
| 1333 | return 0; |
| 1334 | } |
| 1335 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1336 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1337 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1338 | /*[clinic input] |
| 1339 | _tracemalloc._get_traces |
| 1340 | |
| 1341 | Get traces of all memory blocks allocated by Python. |
| 1342 | |
| 1343 | Return a list of (size: int, traceback: tuple) tuples. |
| 1344 | traceback is a tuple of (filename: str, lineno: int) tuples. |
| 1345 | |
| 1346 | Return an empty list if the tracemalloc module is disabled. |
| 1347 | [clinic start generated code]*/ |
| 1348 | |
| 1349 | static PyObject * |
| 1350 | _tracemalloc__get_traces_impl(PyObject *module) |
| 1351 | /*[clinic end generated code: output=e9929876ced4b5cc input=6c7d2230b24255aa]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1352 | { |
| 1353 | get_traces_t get_traces; |
| 1354 | int err; |
| 1355 | |
| 1356 | get_traces.traces = NULL; |
| 1357 | get_traces.tracebacks = NULL; |
| 1358 | get_traces.list = PyList_New(0); |
| 1359 | if (get_traces.list == NULL) |
| 1360 | goto error; |
| 1361 | |
| 1362 | if (!tracemalloc_config.tracing) |
| 1363 | return get_traces.list; |
| 1364 | |
Victor Stinner | de2f132 | 2013-11-26 00:26:23 +0100 | [diff] [blame] | 1365 | /* the traceback hash table is used temporarily to intern traceback tuple |
| 1366 | of (filename, lineno) tuples */ |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 1367 | get_traces.tracebacks = hashtable_new(sizeof(traceback_t *), |
| 1368 | sizeof(PyObject *), |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1369 | _Py_hashtable_hash_ptr, |
| 1370 | _Py_hashtable_compare_direct); |
| 1371 | if (get_traces.tracebacks == NULL) { |
| 1372 | PyErr_NoMemory(); |
| 1373 | goto error; |
| 1374 | } |
| 1375 | |
| 1376 | TABLES_LOCK(); |
| 1377 | get_traces.traces = _Py_hashtable_copy(tracemalloc_traces); |
| 1378 | TABLES_UNLOCK(); |
| 1379 | |
| 1380 | if (get_traces.traces == NULL) { |
| 1381 | PyErr_NoMemory(); |
| 1382 | goto error; |
| 1383 | } |
| 1384 | |
| 1385 | set_reentrant(1); |
| 1386 | err = _Py_hashtable_foreach(get_traces.traces, |
| 1387 | tracemalloc_get_traces_fill, &get_traces); |
| 1388 | set_reentrant(0); |
| 1389 | if (err) |
| 1390 | goto error; |
| 1391 | |
| 1392 | goto finally; |
| 1393 | |
| 1394 | error: |
| 1395 | Py_CLEAR(get_traces.list); |
| 1396 | |
| 1397 | finally: |
| 1398 | if (get_traces.tracebacks != NULL) { |
| 1399 | _Py_hashtable_foreach(get_traces.tracebacks, |
Victor Stinner | 285cf0a | 2016-03-21 22:00:58 +0100 | [diff] [blame] | 1400 | tracemalloc_pyobject_decref_cb, NULL); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1401 | _Py_hashtable_destroy(get_traces.tracebacks); |
| 1402 | } |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 1403 | if (get_traces.traces != NULL) { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1404 | _Py_hashtable_destroy(get_traces.traces); |
Victor Stinner | c955387 | 2016-03-22 12:13:01 +0100 | [diff] [blame] | 1405 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1406 | |
| 1407 | return get_traces.list; |
| 1408 | } |
| 1409 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1410 | |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1411 | static traceback_t* |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1412 | tracemalloc_get_traceback(unsigned int domain, uintptr_t ptr) |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1413 | { |
| 1414 | trace_t trace; |
| 1415 | int found; |
| 1416 | |
| 1417 | if (!tracemalloc_config.tracing) |
| 1418 | return NULL; |
| 1419 | |
| 1420 | TABLES_LOCK(); |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1421 | if (tracemalloc_config.use_domain) { |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1422 | pointer_t key = {ptr, domain}; |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1423 | found = _Py_HASHTABLE_GET(tracemalloc_traces, key, trace); |
| 1424 | } |
| 1425 | else { |
| 1426 | found = _Py_HASHTABLE_GET(tracemalloc_traces, ptr, trace); |
| 1427 | } |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1428 | TABLES_UNLOCK(); |
| 1429 | |
| 1430 | if (!found) |
| 1431 | return NULL; |
| 1432 | |
| 1433 | return trace.traceback; |
| 1434 | } |
| 1435 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1436 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1437 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1438 | /*[clinic input] |
| 1439 | _tracemalloc._get_object_traceback |
| 1440 | |
| 1441 | obj: object |
| 1442 | / |
| 1443 | |
| 1444 | Get the traceback where the Python object obj was allocated. |
| 1445 | |
| 1446 | Return a tuple of (filename: str, lineno: int) tuples. |
| 1447 | Return None if the tracemalloc module is disabled or did not |
| 1448 | trace the allocation of the object. |
| 1449 | [clinic start generated code]*/ |
| 1450 | |
| 1451 | static PyObject * |
| 1452 | _tracemalloc__get_object_traceback(PyObject *module, PyObject *obj) |
| 1453 | /*[clinic end generated code: output=41ee0553a658b0aa input=29495f1b21c53212]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1454 | { |
| 1455 | PyTypeObject *type; |
| 1456 | void *ptr; |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1457 | traceback_t *traceback; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1458 | |
| 1459 | type = Py_TYPE(obj); |
| 1460 | if (PyType_IS_GC(type)) |
| 1461 | ptr = (void *)((char *)obj - sizeof(PyGC_Head)); |
| 1462 | else |
| 1463 | ptr = (void *)obj; |
| 1464 | |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 1465 | traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr); |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1466 | if (traceback == NULL) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1467 | Py_RETURN_NONE; |
| 1468 | |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1469 | return traceback_to_pyobject(traceback, NULL); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1470 | } |
| 1471 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1472 | |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1473 | #define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str)) |
| 1474 | |
| 1475 | static void |
| 1476 | _PyMem_DumpFrame(int fd, frame_t * frame) |
| 1477 | { |
| 1478 | PUTS(fd, " File \""); |
| 1479 | _Py_DumpASCII(fd, frame->filename); |
| 1480 | PUTS(fd, "\", line "); |
| 1481 | _Py_DumpDecimal(fd, frame->lineno); |
| 1482 | PUTS(fd, "\n"); |
| 1483 | } |
| 1484 | |
| 1485 | /* Dump the traceback where a memory block was allocated into file descriptor |
| 1486 | fd. The function may block on TABLES_LOCK() but it is unlikely. */ |
| 1487 | void |
| 1488 | _PyMem_DumpTraceback(int fd, const void *ptr) |
| 1489 | { |
| 1490 | traceback_t *traceback; |
| 1491 | int i; |
| 1492 | |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 1493 | traceback = tracemalloc_get_traceback(DEFAULT_DOMAIN, (uintptr_t)ptr); |
Victor Stinner | 0611c26 | 2016-03-15 22:22:13 +0100 | [diff] [blame] | 1494 | if (traceback == NULL) |
| 1495 | return; |
| 1496 | |
| 1497 | PUTS(fd, "Memory block allocated at (most recent call first):\n"); |
| 1498 | for (i=0; i < traceback->nframe; i++) { |
| 1499 | _PyMem_DumpFrame(fd, &traceback->frames[i]); |
| 1500 | } |
| 1501 | PUTS(fd, "\n"); |
| 1502 | } |
| 1503 | |
| 1504 | #undef PUTS |
| 1505 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1506 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1507 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1508 | /*[clinic input] |
| 1509 | _tracemalloc.start |
| 1510 | |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1511 | nframe: int = 1 |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1512 | / |
| 1513 | |
| 1514 | Start tracing Python memory allocations. |
| 1515 | |
| 1516 | Also set the maximum number of frames stored in the traceback of a |
| 1517 | trace to nframe. |
| 1518 | [clinic start generated code]*/ |
| 1519 | |
| 1520 | static PyObject * |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1521 | _tracemalloc_start_impl(PyObject *module, int nframe) |
| 1522 | /*[clinic end generated code: output=caae05c23c159d3c input=40d849b5b29d1933]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1523 | { |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1524 | if (tracemalloc_start(nframe) < 0) { |
Victor Stinner | 3728d6c | 2013-11-23 12:37:20 +0100 | [diff] [blame] | 1525 | return NULL; |
| 1526 | } |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1527 | Py_RETURN_NONE; |
| 1528 | } |
| 1529 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1530 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1531 | /*[clinic input] |
| 1532 | _tracemalloc.stop |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1533 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1534 | Stop tracing Python memory allocations. |
| 1535 | |
| 1536 | Also clear traces of memory blocks allocated by Python. |
| 1537 | [clinic start generated code]*/ |
| 1538 | |
| 1539 | static PyObject * |
| 1540 | _tracemalloc_stop_impl(PyObject *module) |
| 1541 | /*[clinic end generated code: output=c3c42ae03e3955cd input=7478f075e51dae18]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1542 | { |
| 1543 | tracemalloc_stop(); |
| 1544 | Py_RETURN_NONE; |
| 1545 | } |
| 1546 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1547 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1548 | /*[clinic input] |
| 1549 | _tracemalloc.get_traceback_limit |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1550 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1551 | Get the maximum number of frames stored in the traceback of a trace. |
| 1552 | |
| 1553 | By default, a trace of an allocated memory block only stores |
| 1554 | the most recent frame: the limit is 1. |
| 1555 | [clinic start generated code]*/ |
| 1556 | |
| 1557 | static PyObject * |
| 1558 | _tracemalloc_get_traceback_limit_impl(PyObject *module) |
| 1559 | /*[clinic end generated code: output=d556d9306ba95567 input=da3cd977fc68ae3b]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1560 | { |
| 1561 | return PyLong_FromLong(tracemalloc_config.max_nframe); |
| 1562 | } |
| 1563 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1564 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1565 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1566 | /*[clinic input] |
| 1567 | _tracemalloc.get_tracemalloc_memory |
| 1568 | |
| 1569 | Get the memory usage in bytes of the tracemalloc module. |
| 1570 | |
| 1571 | This memory is used internally to trace memory allocations. |
| 1572 | [clinic start generated code]*/ |
| 1573 | |
| 1574 | static PyObject * |
| 1575 | _tracemalloc_get_tracemalloc_memory_impl(PyObject *module) |
| 1576 | /*[clinic end generated code: output=e3f14e280a55f5aa input=5d919c0f4d5132ad]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1577 | { |
| 1578 | size_t size; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1579 | |
| 1580 | size = _Py_hashtable_size(tracemalloc_tracebacks); |
| 1581 | size += _Py_hashtable_size(tracemalloc_filenames); |
| 1582 | |
| 1583 | TABLES_LOCK(); |
| 1584 | size += _Py_hashtable_size(tracemalloc_traces); |
| 1585 | TABLES_UNLOCK(); |
| 1586 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1587 | return PyLong_FromSize_t(size); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1588 | } |
| 1589 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1590 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1591 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1592 | /*[clinic input] |
| 1593 | _tracemalloc.get_traced_memory |
| 1594 | |
| 1595 | Get the current size and peak size of memory blocks traced by tracemalloc. |
| 1596 | |
| 1597 | Returns a tuple: (current: int, peak: int). |
| 1598 | [clinic start generated code]*/ |
| 1599 | |
| 1600 | static PyObject * |
| 1601 | _tracemalloc_get_traced_memory_impl(PyObject *module) |
| 1602 | /*[clinic end generated code: output=5b167189adb9e782 input=61ddb5478400ff66]*/ |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1603 | { |
Victor Stinner | 3c0481d | 2013-11-27 21:39:49 +0100 | [diff] [blame] | 1604 | Py_ssize_t size, peak_size; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1605 | |
| 1606 | if (!tracemalloc_config.tracing) |
| 1607 | return Py_BuildValue("ii", 0, 0); |
| 1608 | |
| 1609 | TABLES_LOCK(); |
| 1610 | size = tracemalloc_traced_memory; |
Victor Stinner | 3c0481d | 2013-11-27 21:39:49 +0100 | [diff] [blame] | 1611 | peak_size = tracemalloc_peak_traced_memory; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1612 | TABLES_UNLOCK(); |
| 1613 | |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1614 | return Py_BuildValue("nn", size, peak_size); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1615 | } |
| 1616 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1617 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1618 | static PyMethodDef module_methods[] = { |
Serhiy Storchaka | b451f91 | 2017-02-04 12:18:38 +0200 | [diff] [blame] | 1619 | _TRACEMALLOC_IS_TRACING_METHODDEF |
| 1620 | _TRACEMALLOC_CLEAR_TRACES_METHODDEF |
| 1621 | _TRACEMALLOC__GET_TRACES_METHODDEF |
| 1622 | _TRACEMALLOC__GET_OBJECT_TRACEBACK_METHODDEF |
| 1623 | _TRACEMALLOC_START_METHODDEF |
| 1624 | _TRACEMALLOC_STOP_METHODDEF |
| 1625 | _TRACEMALLOC_GET_TRACEBACK_LIMIT_METHODDEF |
| 1626 | _TRACEMALLOC_GET_TRACEMALLOC_MEMORY_METHODDEF |
| 1627 | _TRACEMALLOC_GET_TRACED_MEMORY_METHODDEF |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1628 | /* sentinel */ |
| 1629 | {NULL, NULL} |
| 1630 | }; |
| 1631 | |
| 1632 | PyDoc_STRVAR(module_doc, |
| 1633 | "Debug module to trace memory blocks allocated by Python."); |
| 1634 | |
| 1635 | static struct PyModuleDef module_def = { |
| 1636 | PyModuleDef_HEAD_INIT, |
| 1637 | "_tracemalloc", |
| 1638 | module_doc, |
| 1639 | 0, /* non-negative size to be able to unload the module */ |
| 1640 | module_methods, |
| 1641 | NULL, |
| 1642 | }; |
| 1643 | |
| 1644 | PyMODINIT_FUNC |
| 1645 | PyInit__tracemalloc(void) |
| 1646 | { |
| 1647 | PyObject *m; |
| 1648 | m = PyModule_Create(&module_def); |
| 1649 | if (m == NULL) |
| 1650 | return NULL; |
| 1651 | |
| 1652 | if (tracemalloc_init() < 0) |
| 1653 | return NULL; |
| 1654 | |
| 1655 | return m; |
| 1656 | } |
| 1657 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1658 | |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1659 | int |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1660 | _PyTraceMalloc_Init(int nframe) |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1661 | { |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1662 | assert(PyGILState_Check()); |
Victor Stinner | a7368ac | 2017-11-15 18:11:45 -0800 | [diff] [blame] | 1663 | if (nframe == 0) { |
| 1664 | return 0; |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1665 | } |
Victor Stinner | f28ce60 | 2013-11-27 22:27:13 +0100 | [diff] [blame] | 1666 | return tracemalloc_start(nframe); |
Victor Stinner | ed3b0bc | 2013-11-23 12:27:24 +0100 | [diff] [blame] | 1667 | } |
| 1668 | |
Victor Stinner | e492ae5 | 2016-03-22 12:58:23 +0100 | [diff] [blame] | 1669 | |
Victor Stinner | be0708f | 2013-12-01 10:03:26 +0100 | [diff] [blame] | 1670 | void |
| 1671 | _PyTraceMalloc_Fini(void) |
| 1672 | { |
Victor Stinner | be0708f | 2013-12-01 10:03:26 +0100 | [diff] [blame] | 1673 | assert(PyGILState_Check()); |
Victor Stinner | be0708f | 2013-12-01 10:03:26 +0100 | [diff] [blame] | 1674 | tracemalloc_deinit(); |
| 1675 | } |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1676 | |
| 1677 | int |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1678 | PyTraceMalloc_Track(unsigned int domain, uintptr_t ptr, |
| 1679 | size_t size) |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1680 | { |
| 1681 | int res; |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1682 | PyGILState_STATE gil_state; |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1683 | |
| 1684 | if (!tracemalloc_config.tracing) { |
| 1685 | /* tracemalloc is not tracing: do nothing */ |
| 1686 | return -2; |
| 1687 | } |
| 1688 | |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1689 | gil_state = PyGILState_Ensure(); |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1690 | |
| 1691 | TABLES_LOCK(); |
| 1692 | res = tracemalloc_add_trace(domain, ptr, size); |
| 1693 | TABLES_UNLOCK(); |
| 1694 | |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1695 | PyGILState_Release(gil_state); |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1696 | return res; |
| 1697 | } |
| 1698 | |
| 1699 | |
| 1700 | int |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1701 | PyTraceMalloc_Untrack(unsigned int domain, uintptr_t ptr) |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1702 | { |
| 1703 | if (!tracemalloc_config.tracing) { |
| 1704 | /* tracemalloc is not tracing: do nothing */ |
| 1705 | return -2; |
| 1706 | } |
| 1707 | |
| 1708 | TABLES_LOCK(); |
| 1709 | tracemalloc_remove_trace(domain, ptr); |
| 1710 | TABLES_UNLOCK(); |
| 1711 | |
| 1712 | return 0; |
| 1713 | } |
| 1714 | |
| 1715 | |
| 1716 | PyObject* |
Victor Stinner | 5ea4c06 | 2017-06-20 17:46:36 +0200 | [diff] [blame] | 1717 | _PyTraceMalloc_GetTraceback(unsigned int domain, uintptr_t ptr) |
Victor Stinner | 10b73e1 | 2016-03-22 13:39:05 +0100 | [diff] [blame] | 1718 | { |
| 1719 | traceback_t *traceback; |
| 1720 | |
| 1721 | traceback = tracemalloc_get_traceback(domain, ptr); |
| 1722 | if (traceback == NULL) |
| 1723 | Py_RETURN_NONE; |
| 1724 | |
| 1725 | return traceback_to_pyobject(traceback, NULL); |
| 1726 | } |