65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
#ifndef JEMALLOC_INTERNAL_HPA_OPTS_H
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#define JEMALLOC_INTERNAL_HPA_OPTS_H
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#include "jemalloc/internal/fxp.h"
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/*
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* This file is morally part of hpa.h, but is split out for header-ordering
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* reasons.
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*/
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typedef struct hpa_shard_opts_s hpa_shard_opts_t;
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struct hpa_shard_opts_s {
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/*
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* The largest size we'll allocate out of the shard. For those
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* allocations refused, the caller (in practice, the PA module) will
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* fall back to the more general (for now) PAC, which can always handle
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* any allocation request.
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*/
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size_t slab_max_alloc;
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/*
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* When the number of active bytes in a hugepage is >=
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* hugification_threshold, we force hugify it.
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*/
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size_t hugification_threshold;
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/*
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* When the number of dirty bytes in a hugepage is >=
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* dehugification_threshold, we force dehugify it.
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*/
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size_t dehugification_threshold;
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/*
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* The HPA purges whenever the number of pages exceeds dirty_mult *
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* active_pages. This may be set to (fxp_t)-1 to disable purging.
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*/
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fxp_t dirty_mult;
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/*
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* Whether or not the PAI methods are allowed to defer work to a
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* subsequent hpa_shard_do_deferred_work() call. Practically, this
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* corresponds to background threads being enabled. We track this
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* ourselves for encapsulation purposes.
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*/
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bool deferral_allowed;
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};
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#define HPA_SHARD_OPTS_DEFAULT { \
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/* slab_max_alloc */ \
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64 * 1024, \
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/* hugification_threshold */ \
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HUGEPAGE * 95 / 100, \
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/* dehugification_threshold */ \
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HUGEPAGE * 20 / 100, \
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/* dirty_mult */ \
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FXP_INIT_PERCENT(25), \
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/* \
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* deferral_allowed \
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* \
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* Really, this is always set by the arena during creation \
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* or by an hpa_shard_set_deferral_allowed call, so the value \
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* we put here doesn't matter. \
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*/ \
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false \
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}
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#endif /* JEMALLOC_INTERNAL_HPA_OPTS_H */
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