Brecht Van Lommel
183ba284f2
Previously this would be enabled when threads were used, but threads are now basically always in use so there is no point. Further, this is only needed for guarded allocation with --debug-memory which is not performance critical.
126 lines
4.9 KiB
C
126 lines
4.9 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup MEM
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*
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* Guarded memory allocation, and boundary-write detection.
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*/
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#include "MEM_guardedalloc.h"
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/* to ensure strict conversions */
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#include "../../source/blender/blenlib/BLI_strict_flags.h"
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#include <assert.h>
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#include "mallocn_intern.h"
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#ifdef WITH_JEMALLOC_CONF
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/* If jemalloc is used, it reads this global variable and enables background
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* threads to purge dirty pages. Otherwise we release memory too slowly or not
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* at all if the thread that did the allocation stays inactive. */
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const char *malloc_conf = "background_thread:true,dirty_decay_ms:4000";
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#endif
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size_t (*MEM_allocN_len)(const void *vmemh) = MEM_lockfree_allocN_len;
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void (*MEM_freeN)(void *vmemh) = MEM_lockfree_freeN;
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void *(*MEM_dupallocN)(const void *vmemh) = MEM_lockfree_dupallocN;
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void *(*MEM_reallocN_id)(void *vmemh, size_t len, const char *str) = MEM_lockfree_reallocN_id;
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void *(*MEM_recallocN_id)(void *vmemh, size_t len, const char *str) = MEM_lockfree_recallocN_id;
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void *(*MEM_callocN)(size_t len, const char *str) = MEM_lockfree_callocN;
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void *(*MEM_calloc_arrayN)(size_t len, size_t size, const char *str) = MEM_lockfree_calloc_arrayN;
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void *(*MEM_mallocN)(size_t len, const char *str) = MEM_lockfree_mallocN;
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void *(*MEM_malloc_arrayN)(size_t len, size_t size, const char *str) = MEM_lockfree_malloc_arrayN;
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void *(*MEM_mallocN_aligned)(size_t len,
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size_t alignment,
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const char *str) = MEM_lockfree_mallocN_aligned;
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void (*MEM_printmemlist_pydict)(void) = MEM_lockfree_printmemlist_pydict;
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void (*MEM_printmemlist)(void) = MEM_lockfree_printmemlist;
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void (*MEM_callbackmemlist)(void (*func)(void *)) = MEM_lockfree_callbackmemlist;
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void (*MEM_printmemlist_stats)(void) = MEM_lockfree_printmemlist_stats;
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void (*MEM_set_error_callback)(void (*func)(const char *)) = MEM_lockfree_set_error_callback;
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bool (*MEM_consistency_check)(void) = MEM_lockfree_consistency_check;
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void (*MEM_set_memory_debug)(void) = MEM_lockfree_set_memory_debug;
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size_t (*MEM_get_memory_in_use)(void) = MEM_lockfree_get_memory_in_use;
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unsigned int (*MEM_get_memory_blocks_in_use)(void) = MEM_lockfree_get_memory_blocks_in_use;
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void (*MEM_reset_peak_memory)(void) = MEM_lockfree_reset_peak_memory;
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size_t (*MEM_get_peak_memory)(void) = MEM_lockfree_get_peak_memory;
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#ifndef NDEBUG
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const char *(*MEM_name_ptr)(void *vmemh) = MEM_lockfree_name_ptr;
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#endif
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void *aligned_malloc(size_t size, size_t alignment)
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{
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/* posix_memalign requires alignment to be a multiple of sizeof(void *). */
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assert(alignment >= ALIGNED_MALLOC_MINIMUM_ALIGNMENT);
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#ifdef _WIN32
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return _aligned_malloc(size, alignment);
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#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__)
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void *result;
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if (posix_memalign(&result, alignment, size)) {
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/* non-zero means allocation error
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* either no allocation or bad alignment value
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*/
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return NULL;
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}
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return result;
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#else /* This is for Linux. */
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return memalign(alignment, size);
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#endif
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}
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void aligned_free(void *ptr)
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{
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#ifdef _WIN32
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_aligned_free(ptr);
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#else
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free(ptr);
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#endif
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}
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void MEM_use_guarded_allocator(void)
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{
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MEM_allocN_len = MEM_guarded_allocN_len;
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MEM_freeN = MEM_guarded_freeN;
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MEM_dupallocN = MEM_guarded_dupallocN;
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MEM_reallocN_id = MEM_guarded_reallocN_id;
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MEM_recallocN_id = MEM_guarded_recallocN_id;
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MEM_callocN = MEM_guarded_callocN;
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MEM_calloc_arrayN = MEM_guarded_calloc_arrayN;
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MEM_mallocN = MEM_guarded_mallocN;
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MEM_malloc_arrayN = MEM_guarded_malloc_arrayN;
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MEM_mallocN_aligned = MEM_guarded_mallocN_aligned;
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MEM_printmemlist_pydict = MEM_guarded_printmemlist_pydict;
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MEM_printmemlist = MEM_guarded_printmemlist;
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MEM_callbackmemlist = MEM_guarded_callbackmemlist;
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MEM_printmemlist_stats = MEM_guarded_printmemlist_stats;
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MEM_set_error_callback = MEM_guarded_set_error_callback;
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MEM_consistency_check = MEM_guarded_consistency_check;
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MEM_set_memory_debug = MEM_guarded_set_memory_debug;
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MEM_get_memory_in_use = MEM_guarded_get_memory_in_use;
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MEM_get_memory_blocks_in_use = MEM_guarded_get_memory_blocks_in_use;
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MEM_reset_peak_memory = MEM_guarded_reset_peak_memory;
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MEM_get_peak_memory = MEM_guarded_get_peak_memory;
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#ifndef NDEBUG
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MEM_name_ptr = MEM_guarded_name_ptr;
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#endif
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}
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