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Fix chunk_alloc_cache() to support decommitted allocation.

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Fix chunk_alloc_cache() to support decommitted allocation, and use this
ability in arena_chunk_alloc_internal() and arena_stash_dirty(), so that
chunks don't get permanently stuck in a hybrid state.

This resolves #487.
This commit is contained in:
Jason Evans 2016-11-03 17:11:01 -07:00
parent dd3ed23aea
commit e9012630ac
3 changed files with 14 additions and 12 deletions
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8
src/chunk.c
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@ -385,23 +385,21 @@ chunk_alloc_base(size_t size)
void *
chunk_alloc_cache(tsdn_t *tsdn, arena_t *arena, chunk_hooks_t *chunk_hooks,
void *new_addr, size_t size, size_t alignment, bool *zero, bool dalloc_node)
void *new_addr, size_t size, size_t alignment, bool *zero, bool *commit,
bool dalloc_node)
{
void *ret;
bool commit;
assert(size != 0);
assert((size & chunksize_mask) == 0);
assert(alignment != 0);
assert((alignment & chunksize_mask) == 0);
commit = true;
ret = chunk_recycle(tsdn, arena, chunk_hooks,
&arena->chunks_szad_cached, &arena->chunks_ad_cached, true,
new_addr, size, alignment, zero, &commit, dalloc_node);
new_addr, size, alignment, zero, commit, dalloc_node);
if (ret == NULL)
return (NULL);
assert(commit);
if (config_valgrind)
JEMALLOC_VALGRIND_MAKE_MEM_UNDEFINED(ret, size);
return (ret);