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