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Pass 'frequent_reuse' hint to PAI

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Currently used only for guarding purposes, the hint is used to determine
if the allocation is supposed to be frequently reused. For example, it
might urge the allocator to ensure the allocation is cached.
This commit is contained in:
Alex Lapenkou 2021-11-05 14:19:39 -07:00 • committed by Alexander Lapenkov
parent 2c70e8d351
commit f56f5b9930
8 changed files with 60 additions and 48 deletions
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5
src/hpa.c
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@ -9,7 +9,8 @@
#define HPA_EDEN_SIZE (128 * HUGEPAGE)
static edata_t *hpa_alloc(tsdn_t *tsdn, pai_t *self, size_t size,
size_t alignment, bool zero, bool guarded, bool *deferred_work_generated);
size_t alignment, bool zero, bool guarded, bool frequent_reuse,
bool *deferred_work_generated);
static size_t hpa_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size,
size_t nallocs, edata_list_active_t *results, bool *deferred_work_generated);
static bool hpa_expand(tsdn_t *tsdn, pai_t *self, edata_t *edata,
@ -760,7 +761,7 @@ hpa_alloc_batch(tsdn_t *tsdn, pai_t *self, size_t size, size_t nallocs,
static edata_t *
hpa_alloc(tsdn_t *tsdn, pai_t *self, size_t size, size_t alignment, bool zero,
bool guarded, bool *deferred_work_generated) {
bool guarded, bool frequent_reuse, bool *deferred_work_generated) {
assert((size & PAGE_MASK) == 0);
assert(!guarded);
witness_assert_depth_to_rank(tsdn_witness_tsdp_get(tsdn),