45186f0c07
Only set the unzeroed flag when initializing the entire mapbits entry, rather than mutating just the unzeroed bit. This simplifies the possible mapbits state transitions.
1277 lines
40 KiB
C
1277 lines
40 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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#define LARGE_MINCLASS (ZU(1) << LG_LARGE_MINCLASS)
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/* Maximum number of regions in one run. */
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#define LG_RUN_MAXREGS (LG_PAGE - LG_TINY_MIN)
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#define RUN_MAXREGS (1U << LG_RUN_MAXREGS)
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/*
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* Minimum redzone size. Redzones may be larger than this if necessary to
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* preserve region alignment.
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*/
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#define REDZONE_MINSIZE 16
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/*
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* The minimum ratio of active:dirty pages per arena is computed as:
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*
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* (nactive >> lg_dirty_mult) >= ndirty
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*
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* So, supposing that lg_dirty_mult is 3, there can be no less than 8 times as
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* many active pages as dirty pages.
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*/
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#define LG_DIRTY_MULT_DEFAULT 3
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typedef struct arena_runs_dirty_link_s arena_runs_dirty_link_t;
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typedef struct arena_run_s arena_run_t;
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typedef struct arena_chunk_map_bits_s arena_chunk_map_bits_t;
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typedef struct arena_chunk_map_misc_s arena_chunk_map_misc_t;
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typedef struct arena_chunk_s arena_chunk_t;
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typedef struct arena_bin_info_s arena_bin_info_t;
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typedef struct arena_bin_s arena_bin_t;
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typedef struct arena_s arena_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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#ifdef JEMALLOC_ARENA_STRUCTS_A
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struct arena_run_s {
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/* Index of bin this run is associated with. */
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index_t binind;
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/* Number of free regions in run. */
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unsigned nfree;
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/* Per region allocated/deallocated bitmap. */
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bitmap_t bitmap[BITMAP_GROUPS_MAX];
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};
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/* Each element of the chunk map corresponds to one page within the chunk. */
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struct arena_chunk_map_bits_s {
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/*
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* Run address (or size) and various flags are stored together. The bit
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* layout looks like (assuming 32-bit system):
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*
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* ???????? ???????? ???nnnnn nnndulma
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*
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* ? : Unallocated: Run address for first/last pages, unset for internal
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* pages.
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* Small: Run page offset.
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* Large: Run page count for first page, unset for trailing pages.
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* n : binind for small size class, BININD_INVALID for large size class.
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* d : dirty?
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* u : unzeroed?
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* m : decommitted?
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* l : large?
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* a : allocated?
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*
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* Following are example bit patterns for the three types of runs.
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*
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* p : run page offset
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* s : run size
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* n : binind for size class; large objects set these to BININD_INVALID
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* x : don't care
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* - : 0
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* + : 1
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* [DUMLA] : bit set
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* [dumla] : bit unset
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*
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* Unallocated (clean):
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* ssssssss ssssssss sss+++++ +++dum-a
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* xxxxxxxx xxxxxxxx xxxxxxxx xxx-Uxxx
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* ssssssss ssssssss sss+++++ +++dUm-a
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*
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* Unallocated (dirty):
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* ssssssss ssssssss sss+++++ +++D-m-a
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* xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
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* ssssssss ssssssss sss+++++ +++D-m-a
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*
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* Small:
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* pppppppp pppppppp pppnnnnn nnnd---A
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* pppppppp pppppppp pppnnnnn nnn----A
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* pppppppp pppppppp pppnnnnn nnnd---A
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*
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* Large:
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* ssssssss ssssssss sss+++++ +++D--LA
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* xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
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* -------- -------- ---+++++ +++D--LA
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*
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* Large (sampled, size <= LARGE_MINCLASS):
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* ssssssss ssssssss sssnnnnn nnnD--LA
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* xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
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* -------- -------- ---+++++ +++D--LA
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*
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* Large (not sampled, size == LARGE_MINCLASS):
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* ssssssss ssssssss sss+++++ +++D--LA
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* xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
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* -------- -------- ---+++++ +++D--LA
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*/
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size_t bits;
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#define CHUNK_MAP_ALLOCATED ((size_t)0x01U)
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#define CHUNK_MAP_LARGE ((size_t)0x02U)
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#define CHUNK_MAP_STATE_MASK ((size_t)0x3U)
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#define CHUNK_MAP_DECOMMITTED ((size_t)0x04U)
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#define CHUNK_MAP_UNZEROED ((size_t)0x08U)
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#define CHUNK_MAP_DIRTY ((size_t)0x10U)
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#define CHUNK_MAP_FLAGS_MASK ((size_t)0x1cU)
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#define CHUNK_MAP_BININD_SHIFT 5
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#define BININD_INVALID ((size_t)0xffU)
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#define CHUNK_MAP_BININD_MASK (BININD_INVALID << CHUNK_MAP_BININD_SHIFT)
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#define CHUNK_MAP_BININD_INVALID CHUNK_MAP_BININD_MASK
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#define CHUNK_MAP_RUNIND_SHIFT (CHUNK_MAP_BININD_SHIFT + 8)
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#define CHUNK_MAP_SIZE_SHIFT (CHUNK_MAP_RUNIND_SHIFT - LG_PAGE)
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#define CHUNK_MAP_SIZE_MASK \
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(~(CHUNK_MAP_BININD_MASK | CHUNK_MAP_FLAGS_MASK | CHUNK_MAP_STATE_MASK))
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};
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struct arena_runs_dirty_link_s {
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qr(arena_runs_dirty_link_t) rd_link;
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};
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/*
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* Each arena_chunk_map_misc_t corresponds to one page within the chunk, just
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* like arena_chunk_map_bits_t. Two separate arrays are stored within each
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* chunk header in order to improve cache locality.
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*/
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struct arena_chunk_map_misc_s {
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/*
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* Linkage for run trees. There are two disjoint uses:
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*
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* 1) arena_t's runs_avail tree.
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* 2) arena_run_t conceptually uses this linkage for in-use non-full
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* runs, rather than directly embedding linkage.
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*/
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rb_node(arena_chunk_map_misc_t) rb_link;
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union {
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/* Linkage for list of dirty runs. */
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arena_runs_dirty_link_t rd;
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/* Profile counters, used for large object runs. */
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union {
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void *prof_tctx_pun;
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prof_tctx_t *prof_tctx;
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};
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/* Small region run metadata. */
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arena_run_t run;
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};
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};
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typedef rb_tree(arena_chunk_map_misc_t) arena_avail_tree_t;
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typedef rb_tree(arena_chunk_map_misc_t) arena_run_tree_t;
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#endif /* JEMALLOC_ARENA_STRUCTS_A */
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#ifdef JEMALLOC_ARENA_STRUCTS_B
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/* Arena chunk header. */
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struct arena_chunk_s {
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/*
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* A pointer to the arena that owns the chunk is stored within the node.
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* This field as a whole is used by chunks_rtree to support both
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* ivsalloc() and core-based debugging.
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*/
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extent_node_t node;
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/*
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* Map of pages within chunk that keeps track of free/large/small. The
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* first map_bias entries are omitted, since the chunk header does not
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* need to be tracked in the map. This omission saves a header page
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* for common chunk sizes (e.g. 4 MiB).
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*/
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arena_chunk_map_bits_t map_bits[1]; /* Dynamically sized. */
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};
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/*
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* Read-only information associated with each element of arena_t's bins array
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* is stored separately, partly to reduce memory usage (only one copy, rather
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* than one per arena), but mainly to avoid false cacheline sharing.
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*
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* Each run has the following layout:
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*
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* /--------------------\
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* | pad? |
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* |--------------------|
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* | redzone |
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* reg0_offset | region 0 |
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* | redzone |
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* |--------------------| \
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* | redzone | |
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* | region 1 | > reg_interval
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* | redzone | /
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* |--------------------|
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* | ... |
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* | ... |
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* | ... |
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* |--------------------|
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* | redzone |
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* | region nregs-1 |
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* | redzone |
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* |--------------------|
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* | alignment pad? |
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* \--------------------/
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*
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* reg_interval has at least the same minimum alignment as reg_size; this
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* preserves the alignment constraint that sa2u() depends on. Alignment pad is
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* either 0 or redzone_size; it is present only if needed to align reg0_offset.
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*/
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struct arena_bin_info_s {
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/* Size of regions in a run for this bin's size class. */
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size_t reg_size;
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/* Redzone size. */
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size_t redzone_size;
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/* Interval between regions (reg_size + (redzone_size << 1)). */
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size_t reg_interval;
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/* Total size of a run for this bin's size class. */
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size_t run_size;
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/* Total number of regions in a run for this bin's size class. */
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uint32_t nregs;
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/*
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* Metadata used to manipulate bitmaps for runs associated with this
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* bin.
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*/
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bitmap_info_t bitmap_info;
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/* Offset of first region in a run for this bin's size class. */
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uint32_t reg0_offset;
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};
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struct arena_bin_s {
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/*
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* All operations on runcur, runs, and stats require that lock be
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* locked. Run allocation/deallocation are protected by the arena lock,
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* which may be acquired while holding one or more bin locks, but not
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* vise versa.
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*/
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malloc_mutex_t lock;
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/*
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* Current run being used to service allocations of this bin's size
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* class.
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*/
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arena_run_t *runcur;
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/*
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* Tree of non-full runs. This tree is used when looking for an
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* existing run when runcur is no longer usable. We choose the
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* non-full run that is lowest in memory; this policy tends to keep
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* objects packed well, and it can also help reduce the number of
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* almost-empty chunks.
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*/
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arena_run_tree_t runs;
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/* Bin statistics. */
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malloc_bin_stats_t stats;
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};
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struct arena_s {
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/* This arena's index within the arenas array. */
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unsigned ind;
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/*
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* Number of threads currently assigned to this arena. This field is
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* protected by arenas_lock.
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*/
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unsigned nthreads;
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/*
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* There are three classes of arena operations from a locking
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* perspective:
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* 1) Thread assignment (modifies nthreads) is protected by arenas_lock.
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* 2) Bin-related operations are protected by bin locks.
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* 3) Chunk- and run-related operations are protected by this mutex.
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*/
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malloc_mutex_t lock;
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arena_stats_t stats;
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/*
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* List of tcaches for extant threads associated with this arena.
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* Stats from these are merged incrementally, and at exit if
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* opt_stats_print is enabled.
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*/
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ql_head(tcache_t) tcache_ql;
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uint64_t prof_accumbytes;
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|
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/*
|
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* PRNG state for cache index randomization of large allocation base
|
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* pointers.
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*/
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uint64_t offset_state;
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dss_prec_t dss_prec;
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|
|
/*
|
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* In order to avoid rapid chunk allocation/deallocation when an arena
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* oscillates right on the cusp of needing a new chunk, cache the most
|
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* recently freed chunk. The spare is left in the arena's chunk trees
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* until it is deleted.
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*
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* There is one spare chunk per arena, rather than one spare total, in
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* order to avoid interactions between multiple threads that could make
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* a single spare inadequate.
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*/
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arena_chunk_t *spare;
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/* Minimum ratio (log base 2) of nactive:ndirty. */
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ssize_t lg_dirty_mult;
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|
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/* True if a thread is currently executing arena_purge(). */
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bool purging;
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|
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/* Number of pages in active runs and huge regions. */
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size_t nactive;
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|
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/*
|
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* Current count of pages within unused runs that are potentially
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* dirty, and for which madvise(... MADV_DONTNEED) has not been called.
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* By tracking this, we can institute a limit on how much dirty unused
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* memory is mapped for each arena.
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*/
|
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size_t ndirty;
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|
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/*
|
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* Size/address-ordered tree of this arena's available runs. The tree
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* is used for first-best-fit run allocation.
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|
*/
|
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arena_avail_tree_t runs_avail;
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|
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/*
|
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* Unused dirty memory this arena manages. Dirty memory is conceptually
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* tracked as an arbitrarily interleaved LRU of dirty runs and cached
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* chunks, but the list linkage is actually semi-duplicated in order to
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* avoid extra arena_chunk_map_misc_t space overhead.
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*
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* LRU-----------------------------------------------------------MRU
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*
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* /-- arena ---\
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* | |
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* | |
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* |------------| /- chunk -\
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* ...->|chunks_cache|<--------------------------->| /----\ |<--...
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* |------------| | |node| |
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* | | | | | |
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* | | /- run -\ /- run -\ | | | |
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* | | | | | | | | | |
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* | | | | | | | | | |
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* |------------| |-------| |-------| | |----| |
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* ...->|runs_dirty |<-->|rd |<-->|rd |<---->|rd |<----...
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* |------------| |-------| |-------| | |----| |
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* | | | | | | | | | |
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* | | | | | | | \----/ |
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* | | \-------/ \-------/ | |
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* | | | |
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* | | | |
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* \------------/ \---------/
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*/
|
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arena_runs_dirty_link_t runs_dirty;
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extent_node_t chunks_cache;
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|
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/* Extant huge allocations. */
|
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ql_head(extent_node_t) huge;
|
|
/* Synchronizes all huge allocation/update/deallocation. */
|
|
malloc_mutex_t huge_mtx;
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|
|
/*
|
|
* Trees of chunks that were previously allocated (trees differ only in
|
|
* node ordering). These are used when allocating chunks, in an attempt
|
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* to re-use address space. Depending on function, different tree
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* orderings are needed, which is why there are two trees with the same
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* contents.
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|
*/
|
|
extent_tree_t chunks_szad_cached;
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extent_tree_t chunks_ad_cached;
|
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extent_tree_t chunks_szad_retained;
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extent_tree_t chunks_ad_retained;
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|
|
malloc_mutex_t chunks_mtx;
|
|
/* Cache of nodes that were allocated via base_alloc(). */
|
|
ql_head(extent_node_t) node_cache;
|
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malloc_mutex_t node_cache_mtx;
|
|
|
|
/* User-configurable chunk hook functions. */
|
|
chunk_hooks_t chunk_hooks;
|
|
|
|
/* bins is used to store trees of free regions. */
|
|
arena_bin_t bins[NBINS];
|
|
};
|
|
#endif /* JEMALLOC_ARENA_STRUCTS_B */
|
|
|
|
#endif /* JEMALLOC_H_STRUCTS */
|
|
/******************************************************************************/
|
|
#ifdef JEMALLOC_H_EXTERNS
|
|
|
|
static const size_t large_pad =
|
|
#ifdef JEMALLOC_CACHE_OBLIVIOUS
|
|
PAGE
|
|
#else
|
|
0
|
|
#endif
|
|
;
|
|
|
|
extern ssize_t opt_lg_dirty_mult;
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|
|
|
extern arena_bin_info_t arena_bin_info[NBINS];
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|
|
|
extern size_t map_bias; /* Number of arena chunk header pages. */
|
|
extern size_t map_misc_offset;
|
|
extern size_t arena_maxrun; /* Max run size for arenas. */
|
|
extern size_t arena_maxclass; /* Max size class for arenas. */
|
|
extern unsigned nlclasses; /* Number of large size classes. */
|
|
extern unsigned nhclasses; /* Number of huge size classes. */
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|
|
|
void arena_chunk_cache_maybe_insert(arena_t *arena, extent_node_t *node,
|
|
bool cache);
|
|
void arena_chunk_cache_maybe_remove(arena_t *arena, extent_node_t *node,
|
|
bool cache);
|
|
extent_node_t *arena_node_alloc(arena_t *arena);
|
|
void arena_node_dalloc(arena_t *arena, extent_node_t *node);
|
|
void *arena_chunk_alloc_huge(arena_t *arena, size_t usize, size_t alignment,
|
|
bool *zero);
|
|
void arena_chunk_dalloc_huge(arena_t *arena, void *chunk, size_t usize);
|
|
void arena_chunk_ralloc_huge_similar(arena_t *arena, void *chunk,
|
|
size_t oldsize, size_t usize);
|
|
void arena_chunk_ralloc_huge_shrink(arena_t *arena, void *chunk,
|
|
size_t oldsize, size_t usize);
|
|
bool arena_chunk_ralloc_huge_expand(arena_t *arena, void *chunk,
|
|
size_t oldsize, size_t usize, bool *zero);
|
|
ssize_t arena_lg_dirty_mult_get(arena_t *arena);
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|
bool arena_lg_dirty_mult_set(arena_t *arena, ssize_t lg_dirty_mult);
|
|
void arena_maybe_purge(arena_t *arena);
|
|
void arena_purge_all(arena_t *arena);
|
|
void arena_tcache_fill_small(arena_t *arena, tcache_bin_t *tbin,
|
|
index_t binind, uint64_t prof_accumbytes);
|
|
void arena_alloc_junk_small(void *ptr, arena_bin_info_t *bin_info,
|
|
bool zero);
|
|
#ifdef JEMALLOC_JET
|
|
typedef void (arena_redzone_corruption_t)(void *, size_t, bool, size_t,
|
|
uint8_t);
|
|
extern arena_redzone_corruption_t *arena_redzone_corruption;
|
|
typedef void (arena_dalloc_junk_small_t)(void *, arena_bin_info_t *);
|
|
extern arena_dalloc_junk_small_t *arena_dalloc_junk_small;
|
|
#else
|
|
void arena_dalloc_junk_small(void *ptr, arena_bin_info_t *bin_info);
|
|
#endif
|
|
void arena_quarantine_junk_small(void *ptr, size_t usize);
|
|
void *arena_malloc_small(arena_t *arena, size_t size, bool zero);
|
|
void *arena_malloc_large(arena_t *arena, size_t size, bool zero);
|
|
void *arena_palloc(tsd_t *tsd, arena_t *arena, size_t usize,
|
|
size_t alignment, bool zero, tcache_t *tcache);
|
|
void arena_prof_promoted(const void *ptr, size_t size);
|
|
void arena_dalloc_bin_junked_locked(arena_t *arena, arena_chunk_t *chunk,
|
|
void *ptr, arena_chunk_map_bits_t *bitselm);
|
|
void arena_dalloc_bin(arena_t *arena, arena_chunk_t *chunk, void *ptr,
|
|
size_t pageind, arena_chunk_map_bits_t *bitselm);
|
|
void arena_dalloc_small(arena_t *arena, arena_chunk_t *chunk, void *ptr,
|
|
size_t pageind);
|
|
#ifdef JEMALLOC_JET
|
|
typedef void (arena_dalloc_junk_large_t)(void *, size_t);
|
|
extern arena_dalloc_junk_large_t *arena_dalloc_junk_large;
|
|
#else
|
|
void arena_dalloc_junk_large(void *ptr, size_t usize);
|
|
#endif
|
|
void arena_dalloc_large_junked_locked(arena_t *arena, arena_chunk_t *chunk,
|
|
void *ptr);
|
|
void arena_dalloc_large(arena_t *arena, arena_chunk_t *chunk, void *ptr);
|
|
#ifdef JEMALLOC_JET
|
|
typedef void (arena_ralloc_junk_large_t)(void *, size_t, size_t);
|
|
extern arena_ralloc_junk_large_t *arena_ralloc_junk_large;
|
|
#endif
|
|
bool arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size,
|
|
size_t extra, bool zero);
|
|
void *arena_ralloc(tsd_t *tsd, arena_t *arena, void *ptr, size_t oldsize,
|
|
size_t size, size_t extra, size_t alignment, bool zero, tcache_t *tcache);
|
|
dss_prec_t arena_dss_prec_get(arena_t *arena);
|
|
bool arena_dss_prec_set(arena_t *arena, dss_prec_t dss_prec);
|
|
ssize_t arena_lg_dirty_mult_default_get(void);
|
|
bool arena_lg_dirty_mult_default_set(ssize_t lg_dirty_mult);
|
|
void arena_stats_merge(arena_t *arena, const char **dss,
|
|
ssize_t *lg_dirty_mult, size_t *nactive, size_t *ndirty,
|
|
arena_stats_t *astats, malloc_bin_stats_t *bstats,
|
|
malloc_large_stats_t *lstats, malloc_huge_stats_t *hstats);
|
|
arena_t *arena_new(unsigned ind);
|
|
bool arena_boot(void);
|
|
void arena_prefork(arena_t *arena);
|
|
void arena_postfork_parent(arena_t *arena);
|
|
void arena_postfork_child(arena_t *arena);
|
|
|
|
#endif /* JEMALLOC_H_EXTERNS */
|
|
/******************************************************************************/
|
|
#ifdef JEMALLOC_H_INLINES
|
|
|
|
#ifndef JEMALLOC_ENABLE_INLINE
|
|
arena_chunk_map_bits_t *arena_bitselm_get(arena_chunk_t *chunk,
|
|
size_t pageind);
|
|
arena_chunk_map_misc_t *arena_miscelm_get(arena_chunk_t *chunk,
|
|
size_t pageind);
|
|
size_t arena_miscelm_to_pageind(arena_chunk_map_misc_t *miscelm);
|
|
void *arena_miscelm_to_rpages(arena_chunk_map_misc_t *miscelm);
|
|
arena_chunk_map_misc_t *arena_rd_to_miscelm(arena_runs_dirty_link_t *rd);
|
|
arena_chunk_map_misc_t *arena_run_to_miscelm(arena_run_t *run);
|
|
size_t *arena_mapbitsp_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbitsp_read(size_t *mapbitsp);
|
|
size_t arena_mapbits_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_unallocated_size_get(arena_chunk_t *chunk,
|
|
size_t pageind);
|
|
size_t arena_mapbits_large_size_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_small_runind_get(arena_chunk_t *chunk, size_t pageind);
|
|
index_t arena_mapbits_binind_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_dirty_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_unzeroed_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_decommitted_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_large_get(arena_chunk_t *chunk, size_t pageind);
|
|
size_t arena_mapbits_allocated_get(arena_chunk_t *chunk, size_t pageind);
|
|
void arena_mapbitsp_write(size_t *mapbitsp, size_t mapbits);
|
|
void arena_mapbits_unallocated_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t size, size_t flags);
|
|
void arena_mapbits_unallocated_size_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t size);
|
|
void arena_mapbits_internal_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t flags);
|
|
void arena_mapbits_large_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t size, size_t flags);
|
|
void arena_mapbits_large_binind_set(arena_chunk_t *chunk, size_t pageind,
|
|
index_t binind);
|
|
void arena_mapbits_small_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t runind, index_t binind, size_t flags);
|
|
void arena_metadata_allocated_add(arena_t *arena, size_t size);
|
|
void arena_metadata_allocated_sub(arena_t *arena, size_t size);
|
|
size_t arena_metadata_allocated_get(arena_t *arena);
|
|
bool arena_prof_accum_impl(arena_t *arena, uint64_t accumbytes);
|
|
bool arena_prof_accum_locked(arena_t *arena, uint64_t accumbytes);
|
|
bool arena_prof_accum(arena_t *arena, uint64_t accumbytes);
|
|
index_t arena_ptr_small_binind_get(const void *ptr, size_t mapbits);
|
|
index_t arena_bin_index(arena_t *arena, arena_bin_t *bin);
|
|
unsigned arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info,
|
|
const void *ptr);
|
|
prof_tctx_t *arena_prof_tctx_get(const void *ptr);
|
|
void arena_prof_tctx_set(const void *ptr, prof_tctx_t *tctx);
|
|
void *arena_malloc(tsd_t *tsd, arena_t *arena, size_t size, bool zero,
|
|
tcache_t *tcache);
|
|
arena_t *arena_aalloc(const void *ptr);
|
|
size_t arena_salloc(const void *ptr, bool demote);
|
|
void arena_dalloc(tsd_t *tsd, void *ptr, tcache_t *tcache);
|
|
void arena_sdalloc(tsd_t *tsd, void *ptr, size_t size, tcache_t *tcache);
|
|
#endif
|
|
|
|
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_ARENA_C_))
|
|
# ifdef JEMALLOC_ARENA_INLINE_A
|
|
JEMALLOC_ALWAYS_INLINE arena_chunk_map_bits_t *
|
|
arena_bitselm_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
|
|
assert(pageind >= map_bias);
|
|
assert(pageind < chunk_npages);
|
|
|
|
return (&chunk->map_bits[pageind-map_bias]);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE arena_chunk_map_misc_t *
|
|
arena_miscelm_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
|
|
assert(pageind >= map_bias);
|
|
assert(pageind < chunk_npages);
|
|
|
|
return ((arena_chunk_map_misc_t *)((uintptr_t)chunk +
|
|
(uintptr_t)map_misc_offset) + pageind-map_bias);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_miscelm_to_pageind(arena_chunk_map_misc_t *miscelm)
|
|
{
|
|
arena_chunk_t *chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm);
|
|
size_t pageind = ((uintptr_t)miscelm - ((uintptr_t)chunk +
|
|
map_misc_offset)) / sizeof(arena_chunk_map_misc_t) + map_bias;
|
|
|
|
assert(pageind >= map_bias);
|
|
assert(pageind < chunk_npages);
|
|
|
|
return (pageind);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
arena_miscelm_to_rpages(arena_chunk_map_misc_t *miscelm)
|
|
{
|
|
arena_chunk_t *chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(miscelm);
|
|
size_t pageind = arena_miscelm_to_pageind(miscelm);
|
|
|
|
return ((void *)((uintptr_t)chunk + (pageind << LG_PAGE)));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE arena_chunk_map_misc_t *
|
|
arena_rd_to_miscelm(arena_runs_dirty_link_t *rd)
|
|
{
|
|
arena_chunk_map_misc_t *miscelm = (arena_chunk_map_misc_t
|
|
*)((uintptr_t)rd - offsetof(arena_chunk_map_misc_t, rd));
|
|
|
|
assert(arena_miscelm_to_pageind(miscelm) >= map_bias);
|
|
assert(arena_miscelm_to_pageind(miscelm) < chunk_npages);
|
|
|
|
return (miscelm);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE arena_chunk_map_misc_t *
|
|
arena_run_to_miscelm(arena_run_t *run)
|
|
{
|
|
arena_chunk_map_misc_t *miscelm = (arena_chunk_map_misc_t
|
|
*)((uintptr_t)run - offsetof(arena_chunk_map_misc_t, run));
|
|
|
|
assert(arena_miscelm_to_pageind(miscelm) >= map_bias);
|
|
assert(arena_miscelm_to_pageind(miscelm) < chunk_npages);
|
|
|
|
return (miscelm);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t *
|
|
arena_mapbitsp_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
|
|
return (&arena_bitselm_get(chunk, pageind)->bits);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbitsp_read(size_t *mapbitsp)
|
|
{
|
|
|
|
return (*mapbitsp);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
|
|
return (arena_mapbitsp_read(arena_mapbitsp_get(chunk, pageind)));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_unallocated_size_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & (CHUNK_MAP_LARGE|CHUNK_MAP_ALLOCATED)) == 0);
|
|
return ((mapbits & CHUNK_MAP_SIZE_MASK) >> CHUNK_MAP_SIZE_SHIFT);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_large_size_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & (CHUNK_MAP_LARGE|CHUNK_MAP_ALLOCATED)) ==
|
|
(CHUNK_MAP_LARGE|CHUNK_MAP_ALLOCATED));
|
|
return ((mapbits & CHUNK_MAP_SIZE_MASK) >> CHUNK_MAP_SIZE_SHIFT);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_small_runind_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & (CHUNK_MAP_LARGE|CHUNK_MAP_ALLOCATED)) ==
|
|
CHUNK_MAP_ALLOCATED);
|
|
return (mapbits >> CHUNK_MAP_RUNIND_SHIFT);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE index_t
|
|
arena_mapbits_binind_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
index_t binind;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
binind = (mapbits & CHUNK_MAP_BININD_MASK) >> CHUNK_MAP_BININD_SHIFT;
|
|
assert(binind < NBINS || binind == BININD_INVALID);
|
|
return (binind);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_dirty_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & CHUNK_MAP_DECOMMITTED) == 0 || (mapbits &
|
|
(CHUNK_MAP_DIRTY|CHUNK_MAP_UNZEROED)) == 0);
|
|
return (mapbits & CHUNK_MAP_DIRTY);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_unzeroed_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & CHUNK_MAP_DECOMMITTED) == 0 || (mapbits &
|
|
(CHUNK_MAP_DIRTY|CHUNK_MAP_UNZEROED)) == 0);
|
|
return (mapbits & CHUNK_MAP_UNZEROED);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_decommitted_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & CHUNK_MAP_DECOMMITTED) == 0 || (mapbits &
|
|
(CHUNK_MAP_DIRTY|CHUNK_MAP_UNZEROED)) == 0);
|
|
return (mapbits & CHUNK_MAP_DECOMMITTED);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_large_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
return (mapbits & CHUNK_MAP_LARGE);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_mapbits_allocated_get(arena_chunk_t *chunk, size_t pageind)
|
|
{
|
|
size_t mapbits;
|
|
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
return (mapbits & CHUNK_MAP_ALLOCATED);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbitsp_write(size_t *mapbitsp, size_t mapbits)
|
|
{
|
|
|
|
*mapbitsp = mapbits;
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_unallocated_set(arena_chunk_t *chunk, size_t pageind, size_t size,
|
|
size_t flags)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
|
|
assert((size & PAGE_MASK) == 0);
|
|
assert(((size << CHUNK_MAP_SIZE_SHIFT) & ~CHUNK_MAP_SIZE_MASK) == 0);
|
|
assert((flags & CHUNK_MAP_FLAGS_MASK) == flags);
|
|
assert((flags & CHUNK_MAP_DECOMMITTED) == 0 || (flags &
|
|
(CHUNK_MAP_DIRTY|CHUNK_MAP_UNZEROED)) == 0);
|
|
arena_mapbitsp_write(mapbitsp, (size << CHUNK_MAP_SIZE_SHIFT) |
|
|
CHUNK_MAP_BININD_INVALID | flags);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_unallocated_size_set(arena_chunk_t *chunk, size_t pageind,
|
|
size_t size)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
size_t mapbits = arena_mapbitsp_read(mapbitsp);
|
|
|
|
assert((size & PAGE_MASK) == 0);
|
|
assert(((size << CHUNK_MAP_SIZE_SHIFT) & ~CHUNK_MAP_SIZE_MASK) == 0);
|
|
assert((mapbits & (CHUNK_MAP_LARGE|CHUNK_MAP_ALLOCATED)) == 0);
|
|
arena_mapbitsp_write(mapbitsp, (size << CHUNK_MAP_SIZE_SHIFT) | (mapbits
|
|
& ~CHUNK_MAP_SIZE_MASK));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_internal_set(arena_chunk_t *chunk, size_t pageind, size_t flags)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
|
|
assert((flags & CHUNK_MAP_UNZEROED) == flags);
|
|
arena_mapbitsp_write(mapbitsp, flags);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_large_set(arena_chunk_t *chunk, size_t pageind, size_t size,
|
|
size_t flags)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
size_t mapbits = arena_mapbitsp_read(mapbitsp);
|
|
size_t unzeroed;
|
|
|
|
assert((size & PAGE_MASK) == 0);
|
|
assert(((size << CHUNK_MAP_SIZE_SHIFT) & ~CHUNK_MAP_SIZE_MASK) == 0);
|
|
assert((flags & (CHUNK_MAP_DIRTY|CHUNK_MAP_DECOMMITTED)) == flags);
|
|
unzeroed = mapbits & CHUNK_MAP_UNZEROED; /* Preserve unzeroed. */
|
|
arena_mapbitsp_write(mapbitsp, (size << CHUNK_MAP_SIZE_SHIFT) |
|
|
CHUNK_MAP_BININD_INVALID | flags | unzeroed | CHUNK_MAP_LARGE |
|
|
CHUNK_MAP_ALLOCATED);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_large_binind_set(arena_chunk_t *chunk, size_t pageind,
|
|
index_t binind)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
size_t mapbits = arena_mapbitsp_read(mapbitsp);
|
|
|
|
assert(binind <= BININD_INVALID);
|
|
assert(arena_mapbits_large_size_get(chunk, pageind) == LARGE_MINCLASS +
|
|
large_pad);
|
|
arena_mapbitsp_write(mapbitsp, (mapbits & ~CHUNK_MAP_BININD_MASK) |
|
|
(binind << CHUNK_MAP_BININD_SHIFT));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_mapbits_small_set(arena_chunk_t *chunk, size_t pageind, size_t runind,
|
|
index_t binind, size_t flags)
|
|
{
|
|
size_t *mapbitsp = arena_mapbitsp_get(chunk, pageind);
|
|
size_t mapbits = arena_mapbitsp_read(mapbitsp);
|
|
size_t unzeroed;
|
|
|
|
assert(binind < BININD_INVALID);
|
|
assert(pageind - runind >= map_bias);
|
|
assert((flags & CHUNK_MAP_DIRTY) == flags);
|
|
unzeroed = mapbits & CHUNK_MAP_UNZEROED; /* Preserve unzeroed. */
|
|
arena_mapbitsp_write(mapbitsp, (runind << CHUNK_MAP_RUNIND_SHIFT) |
|
|
(binind << CHUNK_MAP_BININD_SHIFT) | flags | unzeroed |
|
|
CHUNK_MAP_ALLOCATED);
|
|
}
|
|
|
|
JEMALLOC_INLINE void
|
|
arena_metadata_allocated_add(arena_t *arena, size_t size)
|
|
{
|
|
|
|
atomic_add_z(&arena->stats.metadata_allocated, size);
|
|
}
|
|
|
|
JEMALLOC_INLINE void
|
|
arena_metadata_allocated_sub(arena_t *arena, size_t size)
|
|
{
|
|
|
|
atomic_sub_z(&arena->stats.metadata_allocated, size);
|
|
}
|
|
|
|
JEMALLOC_INLINE size_t
|
|
arena_metadata_allocated_get(arena_t *arena)
|
|
{
|
|
|
|
return (atomic_read_z(&arena->stats.metadata_allocated));
|
|
}
|
|
|
|
JEMALLOC_INLINE bool
|
|
arena_prof_accum_impl(arena_t *arena, uint64_t accumbytes)
|
|
{
|
|
|
|
cassert(config_prof);
|
|
assert(prof_interval != 0);
|
|
|
|
arena->prof_accumbytes += accumbytes;
|
|
if (arena->prof_accumbytes >= prof_interval) {
|
|
arena->prof_accumbytes -= prof_interval;
|
|
return (true);
|
|
}
|
|
return (false);
|
|
}
|
|
|
|
JEMALLOC_INLINE bool
|
|
arena_prof_accum_locked(arena_t *arena, uint64_t accumbytes)
|
|
{
|
|
|
|
cassert(config_prof);
|
|
|
|
if (likely(prof_interval == 0))
|
|
return (false);
|
|
return (arena_prof_accum_impl(arena, accumbytes));
|
|
}
|
|
|
|
JEMALLOC_INLINE bool
|
|
arena_prof_accum(arena_t *arena, uint64_t accumbytes)
|
|
{
|
|
|
|
cassert(config_prof);
|
|
|
|
if (likely(prof_interval == 0))
|
|
return (false);
|
|
|
|
{
|
|
bool ret;
|
|
|
|
malloc_mutex_lock(&arena->lock);
|
|
ret = arena_prof_accum_impl(arena, accumbytes);
|
|
malloc_mutex_unlock(&arena->lock);
|
|
return (ret);
|
|
}
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE index_t
|
|
arena_ptr_small_binind_get(const void *ptr, size_t mapbits)
|
|
{
|
|
index_t binind;
|
|
|
|
binind = (mapbits & CHUNK_MAP_BININD_MASK) >> CHUNK_MAP_BININD_SHIFT;
|
|
|
|
if (config_debug) {
|
|
arena_chunk_t *chunk;
|
|
arena_t *arena;
|
|
size_t pageind;
|
|
size_t actual_mapbits;
|
|
size_t rpages_ind;
|
|
arena_run_t *run;
|
|
arena_bin_t *bin;
|
|
index_t run_binind, actual_binind;
|
|
arena_bin_info_t *bin_info;
|
|
arena_chunk_map_misc_t *miscelm;
|
|
void *rpages;
|
|
|
|
assert(binind != BININD_INVALID);
|
|
assert(binind < NBINS);
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
arena = extent_node_arena_get(&chunk->node);
|
|
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
|
|
actual_mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert(mapbits == actual_mapbits);
|
|
assert(arena_mapbits_large_get(chunk, pageind) == 0);
|
|
assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
|
|
rpages_ind = pageind - arena_mapbits_small_runind_get(chunk,
|
|
pageind);
|
|
miscelm = arena_miscelm_get(chunk, rpages_ind);
|
|
run = &miscelm->run;
|
|
run_binind = run->binind;
|
|
bin = &arena->bins[run_binind];
|
|
actual_binind = bin - arena->bins;
|
|
assert(run_binind == actual_binind);
|
|
bin_info = &arena_bin_info[actual_binind];
|
|
rpages = arena_miscelm_to_rpages(miscelm);
|
|
assert(((uintptr_t)ptr - ((uintptr_t)rpages +
|
|
(uintptr_t)bin_info->reg0_offset)) % bin_info->reg_interval
|
|
== 0);
|
|
}
|
|
|
|
return (binind);
|
|
}
|
|
# endif /* JEMALLOC_ARENA_INLINE_A */
|
|
|
|
# ifdef JEMALLOC_ARENA_INLINE_B
|
|
JEMALLOC_INLINE index_t
|
|
arena_bin_index(arena_t *arena, arena_bin_t *bin)
|
|
{
|
|
index_t binind = bin - arena->bins;
|
|
assert(binind < NBINS);
|
|
return (binind);
|
|
}
|
|
|
|
JEMALLOC_INLINE unsigned
|
|
arena_run_regind(arena_run_t *run, arena_bin_info_t *bin_info, const void *ptr)
|
|
{
|
|
unsigned shift, diff, regind;
|
|
size_t interval;
|
|
arena_chunk_map_misc_t *miscelm = arena_run_to_miscelm(run);
|
|
void *rpages = arena_miscelm_to_rpages(miscelm);
|
|
|
|
/*
|
|
* Freeing a pointer lower than region zero can cause assertion
|
|
* failure.
|
|
*/
|
|
assert((uintptr_t)ptr >= (uintptr_t)rpages +
|
|
(uintptr_t)bin_info->reg0_offset);
|
|
|
|
/*
|
|
* Avoid doing division with a variable divisor if possible. Using
|
|
* actual division here can reduce allocator throughput by over 20%!
|
|
*/
|
|
diff = (unsigned)((uintptr_t)ptr - (uintptr_t)rpages -
|
|
bin_info->reg0_offset);
|
|
|
|
/* Rescale (factor powers of 2 out of the numerator and denominator). */
|
|
interval = bin_info->reg_interval;
|
|
shift = jemalloc_ffs(interval) - 1;
|
|
diff >>= shift;
|
|
interval >>= shift;
|
|
|
|
if (interval == 1) {
|
|
/* The divisor was a power of 2. */
|
|
regind = diff;
|
|
} else {
|
|
/*
|
|
* To divide by a number D that is not a power of two we
|
|
* multiply by (2^21 / D) and then right shift by 21 positions.
|
|
*
|
|
* X / D
|
|
*
|
|
* becomes
|
|
*
|
|
* (X * interval_invs[D - 3]) >> SIZE_INV_SHIFT
|
|
*
|
|
* We can omit the first three elements, because we never
|
|
* divide by 0, and 1 and 2 are both powers of two, which are
|
|
* handled above.
|
|
*/
|
|
#define SIZE_INV_SHIFT ((sizeof(unsigned) << 3) - LG_RUN_MAXREGS)
|
|
#define SIZE_INV(s) (((1U << SIZE_INV_SHIFT) / (s)) + 1)
|
|
static const unsigned interval_invs[] = {
|
|
SIZE_INV(3),
|
|
SIZE_INV(4), SIZE_INV(5), SIZE_INV(6), SIZE_INV(7),
|
|
SIZE_INV(8), SIZE_INV(9), SIZE_INV(10), SIZE_INV(11),
|
|
SIZE_INV(12), SIZE_INV(13), SIZE_INV(14), SIZE_INV(15),
|
|
SIZE_INV(16), SIZE_INV(17), SIZE_INV(18), SIZE_INV(19),
|
|
SIZE_INV(20), SIZE_INV(21), SIZE_INV(22), SIZE_INV(23),
|
|
SIZE_INV(24), SIZE_INV(25), SIZE_INV(26), SIZE_INV(27),
|
|
SIZE_INV(28), SIZE_INV(29), SIZE_INV(30), SIZE_INV(31)
|
|
};
|
|
|
|
if (likely(interval <= ((sizeof(interval_invs) /
|
|
sizeof(unsigned)) + 2))) {
|
|
regind = (diff * interval_invs[interval - 3]) >>
|
|
SIZE_INV_SHIFT;
|
|
} else
|
|
regind = diff / interval;
|
|
#undef SIZE_INV
|
|
#undef SIZE_INV_SHIFT
|
|
}
|
|
assert(diff == regind * interval);
|
|
assert(regind < bin_info->nregs);
|
|
|
|
return (regind);
|
|
}
|
|
|
|
JEMALLOC_INLINE prof_tctx_t *
|
|
arena_prof_tctx_get(const void *ptr)
|
|
{
|
|
prof_tctx_t *ret;
|
|
arena_chunk_t *chunk;
|
|
|
|
cassert(config_prof);
|
|
assert(ptr != NULL);
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr)) {
|
|
size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
|
|
size_t mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert((mapbits & CHUNK_MAP_ALLOCATED) != 0);
|
|
if (likely((mapbits & CHUNK_MAP_LARGE) == 0))
|
|
ret = (prof_tctx_t *)(uintptr_t)1U;
|
|
else {
|
|
arena_chunk_map_misc_t *elm = arena_miscelm_get(chunk,
|
|
pageind);
|
|
ret = atomic_read_p(&elm->prof_tctx_pun);
|
|
}
|
|
} else
|
|
ret = huge_prof_tctx_get(ptr);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
JEMALLOC_INLINE void
|
|
arena_prof_tctx_set(const void *ptr, prof_tctx_t *tctx)
|
|
{
|
|
arena_chunk_t *chunk;
|
|
|
|
cassert(config_prof);
|
|
assert(ptr != NULL);
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr)) {
|
|
size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
|
|
assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
|
|
|
|
if (unlikely(arena_mapbits_large_get(chunk, pageind) != 0)) {
|
|
arena_chunk_map_misc_t *elm = arena_miscelm_get(chunk,
|
|
pageind);
|
|
atomic_write_p(&elm->prof_tctx_pun, tctx);
|
|
}
|
|
} else
|
|
huge_prof_tctx_set(ptr, tctx);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
arena_malloc(tsd_t *tsd, arena_t *arena, size_t size, bool zero,
|
|
tcache_t *tcache)
|
|
{
|
|
|
|
assert(size != 0);
|
|
|
|
arena = arena_choose(tsd, arena);
|
|
if (unlikely(arena == NULL))
|
|
return (NULL);
|
|
|
|
if (likely(size <= SMALL_MAXCLASS)) {
|
|
if (likely(tcache != NULL)) {
|
|
return (tcache_alloc_small(tsd, arena, tcache, size,
|
|
zero));
|
|
} else
|
|
return (arena_malloc_small(arena, size, zero));
|
|
} else if (likely(size <= arena_maxclass)) {
|
|
/*
|
|
* Initialize tcache after checking size in order to avoid
|
|
* infinite recursion during tcache initialization.
|
|
*/
|
|
if (likely(tcache != NULL) && size <= tcache_maxclass) {
|
|
return (tcache_alloc_large(tsd, arena, tcache, size,
|
|
zero));
|
|
} else
|
|
return (arena_malloc_large(arena, size, zero));
|
|
} else
|
|
return (huge_malloc(tsd, arena, size, zero, tcache));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE arena_t *
|
|
arena_aalloc(const void *ptr)
|
|
{
|
|
arena_chunk_t *chunk;
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr))
|
|
return (extent_node_arena_get(&chunk->node));
|
|
else
|
|
return (huge_aalloc(ptr));
|
|
}
|
|
|
|
/* Return the size of the allocation pointed to by ptr. */
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
arena_salloc(const void *ptr, bool demote)
|
|
{
|
|
size_t ret;
|
|
arena_chunk_t *chunk;
|
|
size_t pageind;
|
|
index_t binind;
|
|
|
|
assert(ptr != NULL);
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr)) {
|
|
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
|
|
assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
|
|
binind = arena_mapbits_binind_get(chunk, pageind);
|
|
if (unlikely(binind == BININD_INVALID || (config_prof && !demote
|
|
&& arena_mapbits_large_get(chunk, pageind) != 0))) {
|
|
/*
|
|
* Large allocation. In the common case (demote), and
|
|
* as this is an inline function, most callers will only
|
|
* end up looking at binind to determine that ptr is a
|
|
* small allocation.
|
|
*/
|
|
assert(config_cache_oblivious || ((uintptr_t)ptr &
|
|
PAGE_MASK) == 0);
|
|
ret = arena_mapbits_large_size_get(chunk, pageind) -
|
|
large_pad;
|
|
assert(ret != 0);
|
|
assert(pageind + ((ret+large_pad)>>LG_PAGE) <=
|
|
chunk_npages);
|
|
assert(arena_mapbits_dirty_get(chunk, pageind) ==
|
|
arena_mapbits_dirty_get(chunk,
|
|
pageind+((ret+large_pad)>>LG_PAGE)-1));
|
|
} else {
|
|
/*
|
|
* Small allocation (possibly promoted to a large
|
|
* object).
|
|
*/
|
|
assert(arena_mapbits_large_get(chunk, pageind) != 0 ||
|
|
arena_ptr_small_binind_get(ptr,
|
|
arena_mapbits_get(chunk, pageind)) == binind);
|
|
ret = index2size(binind);
|
|
}
|
|
} else
|
|
ret = huge_salloc(ptr);
|
|
|
|
return (ret);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_dalloc(tsd_t *tsd, void *ptr, tcache_t *tcache)
|
|
{
|
|
arena_chunk_t *chunk;
|
|
size_t pageind, mapbits;
|
|
|
|
assert(ptr != NULL);
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr)) {
|
|
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> LG_PAGE;
|
|
mapbits = arena_mapbits_get(chunk, pageind);
|
|
assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
|
|
if (likely((mapbits & CHUNK_MAP_LARGE) == 0)) {
|
|
/* Small allocation. */
|
|
if (likely(tcache != NULL)) {
|
|
index_t binind = arena_ptr_small_binind_get(ptr,
|
|
mapbits);
|
|
tcache_dalloc_small(tsd, tcache, ptr, binind);
|
|
} else {
|
|
arena_dalloc_small(extent_node_arena_get(
|
|
&chunk->node), chunk, ptr, pageind);
|
|
}
|
|
} else {
|
|
size_t size = arena_mapbits_large_size_get(chunk,
|
|
pageind);
|
|
|
|
assert(config_cache_oblivious || ((uintptr_t)ptr &
|
|
PAGE_MASK) == 0);
|
|
|
|
if (likely(tcache != NULL) && size - large_pad <=
|
|
tcache_maxclass) {
|
|
tcache_dalloc_large(tsd, tcache, ptr, size -
|
|
large_pad);
|
|
} else {
|
|
arena_dalloc_large(extent_node_arena_get(
|
|
&chunk->node), chunk, ptr);
|
|
}
|
|
}
|
|
} else
|
|
huge_dalloc(tsd, ptr, tcache);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
arena_sdalloc(tsd_t *tsd, void *ptr, size_t size, tcache_t *tcache)
|
|
{
|
|
arena_chunk_t *chunk;
|
|
|
|
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
|
|
if (likely(chunk != ptr)) {
|
|
if (config_prof && opt_prof) {
|
|
size_t pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >>
|
|
LG_PAGE;
|
|
assert(arena_mapbits_allocated_get(chunk, pageind) != 0);
|
|
if (arena_mapbits_large_get(chunk, pageind) != 0) {
|
|
/*
|
|
* Make sure to use promoted size, not request
|
|
* size.
|
|
*/
|
|
size = arena_mapbits_large_size_get(chunk,
|
|
pageind) - large_pad;
|
|
}
|
|
}
|
|
assert(s2u(size) == s2u(arena_salloc(ptr, false)));
|
|
|
|
if (likely(size <= SMALL_MAXCLASS)) {
|
|
/* Small allocation. */
|
|
if (likely(tcache != NULL)) {
|
|
index_t binind = size2index(size);
|
|
tcache_dalloc_small(tsd, tcache, ptr, binind);
|
|
} else {
|
|
size_t pageind = ((uintptr_t)ptr -
|
|
(uintptr_t)chunk) >> LG_PAGE;
|
|
arena_dalloc_small(extent_node_arena_get(
|
|
&chunk->node), chunk, ptr, pageind);
|
|
}
|
|
} else {
|
|
assert(config_cache_oblivious || ((uintptr_t)ptr &
|
|
PAGE_MASK) == 0);
|
|
|
|
if (likely(tcache != NULL) && size <= tcache_maxclass)
|
|
tcache_dalloc_large(tsd, tcache, ptr, size);
|
|
else {
|
|
arena_dalloc_large(extent_node_arena_get(
|
|
&chunk->node), chunk, ptr);
|
|
}
|
|
}
|
|
} else
|
|
huge_dalloc(tsd, ptr, tcache);
|
|
}
|
|
# endif /* JEMALLOC_ARENA_INLINE_B */
|
|
#endif
|
|
|
|
#endif /* JEMALLOC_H_INLINES */
|
|
/******************************************************************************/
|