49b7d7f0a4
Instead of passing down the new_addr, pass down the active edata which allows us to always use a neighbor-acquiring semantic. In other words, this tells us both the original edata and neighbor address. With this change, only neighbors of a "known" edata can be acquired, i.e. acquiring an edata based on an arbitrary address isn't possible anymore.
55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
#ifndef JEMALLOC_INTERNAL_EXTENT_H
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#define JEMALLOC_INTERNAL_EXTENT_H
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#include "jemalloc/internal/ecache.h"
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#include "jemalloc/internal/ehooks.h"
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#include "jemalloc/internal/ph.h"
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#include "jemalloc/internal/rtree.h"
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/*
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* This module contains the page-level allocator. It chooses the addresses that
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* allocations requested by other modules will inhabit, and updates the global
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* metadata to reflect allocation/deallocation/purging decisions.
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*/
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/*
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* When reuse (and split) an active extent, (1U << opt_lg_extent_max_active_fit)
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* is the max ratio between the size of the active extent and the new extent.
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*/
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#define LG_EXTENT_MAX_ACTIVE_FIT_DEFAULT 6
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extern size_t opt_lg_extent_max_active_fit;
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edata_t *ecache_alloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
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bool zero);
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edata_t *ecache_alloc_grow(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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ecache_t *ecache, edata_t *expand_edata, size_t size, size_t alignment,
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bool zero);
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void ecache_dalloc(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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ecache_t *ecache, edata_t *edata);
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edata_t *ecache_evict(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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ecache_t *ecache, size_t npages_min);
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void extent_dalloc_gap(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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edata_t *edata);
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void extent_dalloc_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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edata_t *edata);
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void extent_destroy_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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edata_t *edata);
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bool extent_commit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
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size_t offset, size_t length);
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bool extent_decommit_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
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size_t offset, size_t length);
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bool extent_purge_lazy_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
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size_t offset, size_t length);
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bool extent_purge_forced_wrapper(tsdn_t *tsdn, ehooks_t *ehooks, edata_t *edata,
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size_t offset, size_t length);
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edata_t *extent_split_wrapper(tsdn_t *tsdn, pac_t *pac,
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ehooks_t *ehooks, edata_t *edata, size_t size_a, size_t size_b);
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bool extent_merge_wrapper(tsdn_t *tsdn, pac_t *pac, ehooks_t *ehooks,
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edata_t *a, edata_t *b);
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size_t extent_sn_next(pac_t *pac);
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bool extent_boot(void);
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#endif /* JEMALLOC_INTERNAL_EXTENT_H */
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