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Add junk/zero filling unit tests, and fix discovered bugs.

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Fix growing large reallocation to junk fill new space.

Fix huge deallocation to junk fill when munmap is disabled.
This commit is contained in:
Jason Evans 2014-01-07 16:47:56 -08:00
parent e18c25d23d
commit 6b694c4d47
9 changed files with 420 additions and 31 deletions
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27
src/huge.c
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@ -182,6 +182,29 @@ huge_ralloc(void *ptr, size_t oldsize, size_t size, size_t extra,
return (ret);
}
#ifdef JEMALLOC_JET
#undef huge_dalloc_junk
#define huge_dalloc_junk JEMALLOC_N(huge_dalloc_junk_impl)
#endif
static void
huge_dalloc_junk(void *ptr, size_t usize)
{
if (config_fill && config_dss && opt_junk) {
/*
* Only bother junk filling if the chunk isn't about to be
* unmapped.
*/
if (config_munmap == false || (config_dss && chunk_in_dss(ptr)))
memset(ptr, 0x5a, usize);
}
}
#ifdef JEMALLOC_JET
#undef huge_dalloc_junk
#define huge_dalloc_junk JEMALLOC_N(huge_dalloc_junk)
huge_dalloc_junk_t *huge_dalloc_junk = JEMALLOC_N(huge_dalloc_junk_impl);
#endif
void
huge_dalloc(void *ptr, bool unmap)
{
@ -204,8 +227,8 @@ huge_dalloc(void *ptr, bool unmap)
malloc_mutex_unlock(&huge_mtx);
if (unmap && config_fill && config_dss && opt_junk)
memset(node->addr, 0x5a, node->size);
if (unmap)
huge_dalloc_junk(node->addr, node->size);
chunk_dealloc(node->addr, node->size, unmap);