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Add nallocm().

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Add nallocm(), which computes the real allocation size that would result
from the corresponding allocm() call.  nallocm() is a functional
superset of OS X's malloc_good_size(), in that it takes alignment
constraints into account.
This commit is contained in:
Jason Evans 2012-02-29 12:56:37 -08:00
parent 4bb0983013
commit 7e15dab94d
5 changed files with 131 additions and 25 deletions
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4
include/jemalloc/internal/jemalloc_internal.h.in
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@ -548,10 +548,6 @@ sa2u(size_t size, size_t alignment, size_t *run_size_p)
* 96 | 1100000 | 32
* 144 | 10100000 | 32
* 192 | 11000000 | 64
*
* Depending on runtime settings, it is possible that arena_malloc()
* will further round up to a power of two, but that never causes
* correctness issues.
*/
usize = (size + (alignment - 1)) & (-alignment);
/*

1
include/jemalloc/jemalloc.h.in
View file

@ -59,6 +59,7 @@ int JEMALLOC_P(rallocm)(void **ptr, size_t *rsize, size_t size,
int JEMALLOC_P(sallocm)(const void *ptr, size_t *rsize, int flags)
JEMALLOC_ATTR(nonnull(1));
int JEMALLOC_P(dallocm)(void *ptr, int flags) JEMALLOC_ATTR(nonnull(1));
int JEMALLOC_P(nallocm)(size_t *rsize, size_t size, int flags);
#ifdef __cplusplus
};