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| 1 // Copyright (c) 2005, Google Inc. | 1 // Copyright (c) 2005, Google Inc. |
| 2 // All rights reserved. | 2 // All rights reserved. |
| 3 // | 3 // |
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
| 5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
| 6 // met: | 6 // met: |
| 7 // | 7 // |
| 8 // * Redistributions of source code must retain the above copyright | 8 // * Redistributions of source code must retain the above copyright |
| 9 // notice, this list of conditions and the following disclaimer. | 9 // notice, this list of conditions and the following disclaimer. |
| 10 // * Redistributions in binary form must reproduce the above | 10 // * Redistributions in binary form must reproduce the above |
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| 262 ATTRIBUTE_SECTION(google_malloc); | 262 ATTRIBUTE_SECTION(google_malloc); |
| 263 | 263 |
| 264 // Some non-standard extensions that we support. | 264 // Some non-standard extensions that we support. |
| 265 | 265 |
| 266 // This is equivalent to | 266 // This is equivalent to |
| 267 // OS X: malloc_size() | 267 // OS X: malloc_size() |
| 268 // glibc: malloc_usable_size() | 268 // glibc: malloc_usable_size() |
| 269 // Windows: _msize() | 269 // Windows: _msize() |
| 270 size_t tc_malloc_size(void* p) __THROW | 270 size_t tc_malloc_size(void* p) __THROW |
| 271 ATTRIBUTE_SECTION(google_malloc); | 271 ATTRIBUTE_SECTION(google_malloc); |
| 272 |
| 273 void* tc_malloc_skip_new_handler(size_t size) |
| 274 ATTRIBUTE_SECTION(google_malloc); |
| 272 } // extern "C" | 275 } // extern "C" |
| 273 | 276 |
| 274 | 277 |
| 275 // ----------------------- IMPLEMENTATION ------------------------------- | 278 // ----------------------- IMPLEMENTATION ------------------------------- |
| 276 | 279 |
| 277 static int tc_new_mode = 0; // See tc_set_new_mode(). | 280 static int tc_new_mode = 0; // See tc_set_new_mode(). |
| 278 | 281 |
| 279 // Routines such as free() and realloc() catch some erroneous pointers | 282 // Routines such as free() and realloc() catch some erroneous pointers |
| 280 // passed to them, and invoke the below when they do. (An erroneous pointer | 283 // passed to them, and invoke the below when they do. (An erroneous pointer |
| 281 // won't be caught if it's within a valid span or a stale span for which | 284 // won't be caught if it's within a valid span or a stale span for which |
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| 1885 *mark = ~allocated_mark; // Distinctively not allocated. | 1888 *mark = ~allocated_mark; // Distinctively not allocated. |
| 1886 } | 1889 } |
| 1887 | 1890 |
| 1888 static void MarkAllocatedRegion(void* ptr) { | 1891 static void MarkAllocatedRegion(void* ptr) { |
| 1889 if (ptr == NULL) return; | 1892 if (ptr == NULL) return; |
| 1890 MarkType* mark = GetMarkLocation(ptr); | 1893 MarkType* mark = GetMarkLocation(ptr); |
| 1891 *mark = GetMarkValue(ptr, mark); | 1894 *mark = GetMarkValue(ptr, mark); |
| 1892 } | 1895 } |
| 1893 | 1896 |
| 1894 #endif // TCMALLOC_VALIDATION | 1897 #endif // TCMALLOC_VALIDATION |
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