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Add --malloc-prefix to apply a prefix to malloc, free etc

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This makes it easy to use a replacement allocator instead of the
system default one.

Originally committed as revision 21509 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård
2010-01-28 13:06:31 +00:00
parent e9ca315dd1
commit 4ae406856f
2 changed files with 24 additions and 2 deletions
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17
libavutil/mem.c
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@ -33,6 +33,7 @@
#include <malloc.h>
#endif
#include "avutil.h"
#include "mem.h"
/* here we can use OS-dependent allocation functions */
@ -40,6 +41,22 @@
#undef malloc
#undef realloc
#ifdef MALLOC_PREFIX
#define malloc AV_JOIN(MALLOC_PREFIX, malloc)
#define memalign AV_JOIN(MALLOC_PREFIX, memalign)
#define posix_memalign AV_JOIN(MALLOC_PREFIX, posix_memalign)
#define realloc AV_JOIN(MALLOC_PREFIX, realloc)
#define free AV_JOIN(MALLOC_PREFIX, free)
void *malloc(size_t size);
void *memalign(size_t align, size_t size);
int posix_memalign(void **ptr, size_t align, size_t size);
void *realloc(void *ptr, size_t size);
void free(void *ptr);
#endif /* MALLOC_PREFIX */
/* You can redefine av_malloc and av_free in your project to use your
memory allocator. You do not need to suppress this file because the
linker will do it automatically. */