cbf3a6d703
Migrate all centralized data structures related to huge allocations and
recyclable chunks into arena_t, so that each arena can manage huge
allocations and recyclable virtual memory completely independently of
other arenas.
Add chunk node caching to arenas, in order to avoid contention on the
base allocator.
Use chunks_rtree to look up huge allocations rather than a red-black
tree. Maintain a per arena unsorted list of huge allocations (which
will be needed to enumerate huge allocations during arena reset).
Remove the --enable-ivsalloc option, make ivsalloc() always available,
and use it for size queries if --enable-debug is enabled. The only
practical implications to this removal are that 1) ivsalloc() is now
always available during live debugging (and the underlying radix tree is
available during core-based debugging), and 2) size query validation can
no longer be enabled independent of --enable-debug.
Remove the stats.chunks.{current,total,high} mallctls, and replace their
underlying statistics with simpler atomically updated counters used
exclusively for gdump triggering. These statistics are no longer very
useful because each arena manages chunks independently, and per arena
statistics provide similar information.
Simplify chunk synchronization code, now that base chunk allocation
cannot cause recursive lock acquisition.
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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typedef enum {
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dss_prec_disabled = 0,
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dss_prec_primary = 1,
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dss_prec_secondary = 2,
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dss_prec_limit = 3
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} dss_prec_t;
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#define DSS_PREC_DEFAULT dss_prec_secondary
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#define DSS_DEFAULT "secondary"
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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extern const char *dss_prec_names[];
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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dss_prec_t chunk_dss_prec_get(void);
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bool chunk_dss_prec_set(dss_prec_t dss_prec);
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void *chunk_alloc_dss(arena_t *arena, void *new_addr, size_t size,
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size_t alignment, bool *zero);
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bool chunk_in_dss(void *chunk);
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bool chunk_dss_boot(void);
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void chunk_dss_prefork(void);
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void chunk_dss_postfork_parent(void);
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void chunk_dss_postfork_child(void);
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#endif /* JEMALLOC_H_EXTERNS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_INLINES
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#endif /* JEMALLOC_H_INLINES */
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/******************************************************************************/
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