q3k/openlase
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Add fallback memalign if the system doesn't have one

Browse source
This commit is contained in:
Hector Martin 2011-04-09 15:22:25 +02:00
parent ffc937d709
commit b39ccf58e7
1 changed files with 14 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

15
libol/align.h
View file

@ -62,7 +62,20 @@ static inline void *malloc_align(size_t size, size_t alignment)
}
# define free_align _aligned_free
#else
# error No aligned malloc available
static inline void *malloc_align(size_t size, size_t alignment)
{
CHECK_ALIGNMENT;
void *p = malloc(size + alignment + sizeof(void*) - 1);
uintptr_t ip = sizeof(void*) + (uintptr_t)p;
if (ip & (alignment-1))
ip = (ip & ~(alignment-1)) + alignment;
((void**)ip)[-1] = p;
return (void*)ip;
}
static inline void free_align(void *p)
{
free(((void **)p)[-1]);
}
#endif
#undef CHECK_ALIGNMENT