261 lines
6.0 KiB
C
261 lines
6.0 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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typedef struct extent_s extent_t;
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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/* Extent (span of pages). Use accessor functions for e_* fields. */
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struct extent_s {
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/* Arena from which this extent came, if any. */
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arena_t *e_arena;
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/* Pointer to the extent that this structure is responsible for. */
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void *e_addr;
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/* Total region size. */
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size_t e_size;
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/* True if extent is active (in use). */
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bool e_active;
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/*
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* The zeroed flag is used by chunk recycling code to track whether
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* memory is zero-filled.
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*/
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bool e_zeroed;
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/*
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* True if physical memory is committed to the extent, whether
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* explicitly or implicitly as on a system that overcommits and
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* satisfies physical memory needs on demand via soft page faults.
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*/
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bool e_committed;
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/*
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* The slab flag indicates whether the extent is used for a slab of
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* small regions. This helps differentiate small size classes, and it
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* indicates whether interior pointers can be looked up via iealloc().
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*/
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bool e_slab;
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/* Profile counters, used for huge objects. */
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prof_tctx_t *e_prof_tctx;
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/* Linkage for arena's runs_dirty and chunks_cache rings. */
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arena_runs_dirty_link_t rd;
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qr(extent_t) cc_link;
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union {
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/* Linkage for the size/address-ordered tree. */
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rb_node(extent_t) szad_link;
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/* Linkage for arena's achunks, huge, and node_cache lists. */
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ql_elm(extent_t) ql_link;
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};
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/* Linkage for the address-ordered tree. */
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rb_node(extent_t) ad_link;
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};
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typedef rb_tree(extent_t) extent_tree_t;
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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rb_proto(, extent_tree_szad_, extent_tree_t, extent_t)
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rb_proto(, extent_tree_ad_, extent_tree_t, extent_t)
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#endif /* JEMALLOC_H_EXTERNS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_INLINES
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#ifndef JEMALLOC_ENABLE_INLINE
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arena_t *extent_arena_get(const extent_t *extent);
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void *extent_addr_get(const extent_t *extent);
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size_t extent_size_get(const extent_t *extent);
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void *extent_past_get(const extent_t *extent);
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bool extent_active_get(const extent_t *extent);
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bool extent_zeroed_get(const extent_t *extent);
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bool extent_committed_get(const extent_t *extent);
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bool extent_slab_get(const extent_t *extent);
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prof_tctx_t *extent_prof_tctx_get(const extent_t *extent);
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void extent_arena_set(extent_t *extent, arena_t *arena);
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void extent_addr_set(extent_t *extent, void *addr);
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void extent_size_set(extent_t *extent, size_t size);
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void extent_active_set(extent_t *extent, bool active);
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void extent_zeroed_set(extent_t *extent, bool zeroed);
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void extent_committed_set(extent_t *extent, bool committed);
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void extent_slab_set(extent_t *extent, bool slab);
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void extent_prof_tctx_set(extent_t *extent, prof_tctx_t *tctx);
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void extent_init(extent_t *extent, arena_t *arena, void *addr,
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size_t size, bool active, bool zeroed, bool committed, bool slab);
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void extent_dirty_insert(extent_t *extent,
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arena_runs_dirty_link_t *runs_dirty, extent_t *chunks_dirty);
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void extent_dirty_remove(extent_t *extent);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_EXTENT_C_))
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JEMALLOC_INLINE arena_t *
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extent_arena_get(const extent_t *extent)
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{
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return (extent->e_arena);
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}
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JEMALLOC_INLINE void *
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extent_addr_get(const extent_t *extent)
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{
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return (extent->e_addr);
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}
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JEMALLOC_INLINE size_t
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extent_size_get(const extent_t *extent)
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{
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return (extent->e_size);
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}
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JEMALLOC_INLINE void *
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extent_past_get(const extent_t *extent)
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{
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return ((void *)(uintptr_t)extent->e_addr + extent->e_size);
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}
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JEMALLOC_INLINE bool
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extent_active_get(const extent_t *extent)
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{
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return (extent->e_active);
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}
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JEMALLOC_INLINE bool
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extent_zeroed_get(const extent_t *extent)
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{
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return (extent->e_zeroed);
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}
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JEMALLOC_INLINE bool
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extent_committed_get(const extent_t *extent)
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{
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assert(!extent->e_slab);
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return (extent->e_committed);
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}
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JEMALLOC_INLINE bool
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extent_slab_get(const extent_t *extent)
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{
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return (extent->e_slab);
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}
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JEMALLOC_INLINE prof_tctx_t *
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extent_prof_tctx_get(const extent_t *extent)
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{
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return (extent->e_prof_tctx);
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}
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JEMALLOC_INLINE void
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extent_arena_set(extent_t *extent, arena_t *arena)
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{
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extent->e_arena = arena;
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}
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JEMALLOC_INLINE void
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extent_addr_set(extent_t *extent, void *addr)
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{
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extent->e_addr = addr;
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}
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JEMALLOC_INLINE void
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extent_size_set(extent_t *extent, size_t size)
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{
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extent->e_size = size;
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}
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JEMALLOC_INLINE void
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extent_active_set(extent_t *extent, bool active)
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{
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extent->e_active = active;
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}
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JEMALLOC_INLINE void
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extent_zeroed_set(extent_t *extent, bool zeroed)
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{
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extent->e_zeroed = zeroed;
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}
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JEMALLOC_INLINE void
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extent_committed_set(extent_t *extent, bool committed)
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{
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extent->e_committed = committed;
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}
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JEMALLOC_INLINE void
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extent_slab_set(extent_t *extent, bool slab)
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{
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extent->e_slab = slab;
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}
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JEMALLOC_INLINE void
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extent_prof_tctx_set(extent_t *extent, prof_tctx_t *tctx)
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{
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extent->e_prof_tctx = tctx;
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}
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JEMALLOC_INLINE void
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extent_init(extent_t *extent, arena_t *arena, void *addr, size_t size,
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bool active, bool zeroed, bool committed, bool slab)
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{
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extent_arena_set(extent, arena);
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extent_addr_set(extent, addr);
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extent_size_set(extent, size);
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extent_active_set(extent, active);
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extent_zeroed_set(extent, zeroed);
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extent_committed_set(extent, committed);
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extent_slab_set(extent, slab);
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if (config_prof)
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extent_prof_tctx_set(extent, NULL);
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qr_new(&extent->rd, rd_link);
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qr_new(extent, cc_link);
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}
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JEMALLOC_INLINE void
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extent_dirty_insert(extent_t *extent,
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arena_runs_dirty_link_t *runs_dirty, extent_t *chunks_dirty)
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{
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qr_meld(runs_dirty, &extent->rd, rd_link);
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qr_meld(chunks_dirty, extent, cc_link);
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}
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JEMALLOC_INLINE void
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extent_dirty_remove(extent_t *extent)
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{
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qr_remove(&extent->rd, rd_link);
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qr_remove(extent, cc_link);
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}
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#endif
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#endif /* JEMALLOC_H_INLINES */
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/******************************************************************************/
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