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Fix chunk purge hook calls for in-place huge shrinking reallocation.

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Fix chunk purge hook calls for in-place huge shrinking reallocation to
specify the old chunk size rather than the new chunk size.  This bug
caused no correctness issues for the default chunk purge function, but
was visible to custom functions set via the "arena.<i>.chunk_hooks"
mallctl.

This resolves #264.
This commit is contained in:
Mike Hommey
2015-08-27 20:30:15 -07:00
committed by Jason Evans
parent 30949da601
commit 6d8075f1e6
2 changed files with 6 additions and 2 deletions
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4
src/huge.c
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@@ -149,7 +149,7 @@ huge_ralloc_no_move_similar(void *ptr, size_t oldsize, size_t usize,
if (oldsize > usize) {
size_t sdiff = oldsize - usize;
zeroed = !chunk_purge_wrapper(arena, &chunk_hooks, ptr,
CHUNK_CEILING(usize), usize, sdiff);
CHUNK_CEILING(oldsize), usize, sdiff);
if (config_fill && unlikely(opt_junk_free)) {
memset((void *)((uintptr_t)ptr + usize), 0x5a, sdiff);
zeroed = false;
@@ -204,7 +204,7 @@ huge_ralloc_no_move_shrink(void *ptr, size_t oldsize, size_t usize)
size_t sdiff = oldsize - usize;
zeroed = !chunk_purge_wrapper(arena, &chunk_hooks,
CHUNK_ADDR2BASE((uintptr_t)ptr + usize),
CHUNK_CEILING(usize), CHUNK_ADDR2OFFSET((uintptr_t)ptr +
CHUNK_CEILING(oldsize), CHUNK_ADDR2OFFSET((uintptr_t)ptr +
usize), sdiff);
if (config_fill && unlikely(opt_junk_free)) {
huge_dalloc_junk((void *)((uintptr_t)ptr + usize),