42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#include "jemalloc/internal/jemalloc_preamble.h"
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#include "jemalloc/internal/jemalloc_internal_includes.h"
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#include "jemalloc/internal/pac.h"
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bool
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pac_init(tsdn_t *tsdn, pac_t *pac, unsigned ind, emap_t *emap,
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edata_cache_t *edata_cache) {
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/*
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* Delay coalescing for dirty extents despite the disruptive effect on
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* memory layout for best-fit extent allocation, since cached extents
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* are likely to be reused soon after deallocation, and the cost of
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* merging/splitting extents is non-trivial.
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*/
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if (ecache_init(tsdn, &pac->ecache_dirty, extent_state_dirty, ind,
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/* delay_coalesce */ true)) {
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return true;
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}
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/*
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* Coalesce muzzy extents immediately, because operations on them are in
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* the critical path much less often than for dirty extents.
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*/
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if (ecache_init(tsdn, &pac->ecache_muzzy, extent_state_muzzy, ind,
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/* delay_coalesce */ false)) {
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return true;
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}
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/*
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* Coalesce retained extents immediately, in part because they will
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* never be evicted (and therefore there's no opportunity for delayed
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* coalescing), but also because operations on retained extents are not
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* in the critical path.
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*/
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if (ecache_init(tsdn, &pac->ecache_retained, extent_state_retained,
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ind, /* delay_coalesce */ false)) {
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return true;
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}
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pac->emap = emap;
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pac->edata_cache = edata_cache;
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return false;
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}
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