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Move arena-tracking atomics in jemalloc.c to C11-style

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This commit is contained in:
David Goldblatt
2017-04-04 15:12:24 -07:00
committed by David Goldblatt
parent 864adb7f42
commit bc32ec3503
3 changed files with 12 additions and 11 deletions
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2
include/jemalloc/internal/extent_inlines.h
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@@ -63,7 +63,7 @@ extent_arena_get(const extent_t *extent) {
return NULL;
}
assert(arena_ind <= MALLOCX_ARENA_MAX);
return arenas[arena_ind];
return (arena_t *)atomic_load_p(&arenas[arena_ind], ATOMIC_ACQUIRE);
}
JEMALLOC_INLINE szind_t

7
include/jemalloc/internal/jemalloc_internal.h.in
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@@ -469,7 +469,7 @@ extern unsigned narenas_auto;
* Arenas that are used to service external requests. Not all elements of the
* arenas array are necessarily used; arenas are created lazily as needed.
*/
extern arena_t *arenas[];
extern atomic_p_t arenas[];
/*
* pind2sz_tab encodes the same information as could be computed by
@@ -909,10 +909,9 @@ arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing) {
assert(ind <= MALLOCX_ARENA_MAX);
ret = arenas[ind];
ret = (arena_t *)atomic_load_p(&arenas[ind], ATOMIC_ACQUIRE);
if (unlikely(ret == NULL)) {
ret = (arena_t *)atomic_read_p((void **)&arenas[ind]);
if (init_if_missing && unlikely(ret == NULL)) {
if (init_if_missing) {
ret = arena_init(tsdn, ind,
(extent_hooks_t *)&extent_hooks_default);
}