ee41ad409a
Extend per arena unused dirty page purging to manage unused dirty chunks in aaddtion to unused dirty runs. Rather than immediately unmapping deallocated chunks (or purging them in the --disable-munmap case), store them in a separate set of trees, chunks_[sz]ad_dirty. Preferrentially allocate dirty chunks. When excessive unused dirty pages accumulate, purge runs and chunks in ingegrated LRU order (and unmap chunks in the --enable-munmap case). Refactor extent_node_t to provide accessor functions.
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/******************************************************************************/
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#ifdef JEMALLOC_H_TYPES
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/*
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* Size and alignment of memory chunks that are allocated by the OS's virtual
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* memory system.
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*/
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#define LG_CHUNK_DEFAULT 22
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/* Return the chunk address for allocation address a. */
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#define CHUNK_ADDR2BASE(a) \
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((void *)((uintptr_t)(a) & ~chunksize_mask))
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/* Return the chunk offset of address a. */
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#define CHUNK_ADDR2OFFSET(a) \
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((size_t)((uintptr_t)(a) & chunksize_mask))
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/* Return the smallest chunk multiple that is >= s. */
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#define CHUNK_CEILING(s) \
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(((s) + chunksize_mask) & ~chunksize_mask)
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#endif /* JEMALLOC_H_TYPES */
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/******************************************************************************/
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#ifdef JEMALLOC_H_STRUCTS
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#endif /* JEMALLOC_H_STRUCTS */
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/******************************************************************************/
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#ifdef JEMALLOC_H_EXTERNS
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extern size_t opt_lg_chunk;
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extern const char *opt_dss;
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extern rtree_t chunks_rtree;
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extern size_t chunksize;
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extern size_t chunksize_mask; /* (chunksize - 1). */
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extern size_t chunk_npages;
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bool chunk_register(const void *chunk, const extent_node_t *node);
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void chunk_deregister(const void *chunk, const extent_node_t *node);
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void *chunk_alloc_base(size_t size);
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void *chunk_alloc_arena(chunk_alloc_t *chunk_alloc,
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chunk_dalloc_t *chunk_dalloc, unsigned arena_ind, void *new_addr,
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size_t size, size_t alignment, bool *zero);
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void *chunk_alloc_default(void *new_addr, size_t size, size_t alignment,
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bool *zero, unsigned arena_ind);
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void chunk_record(arena_t *arena, extent_tree_t *chunks_szad,
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extent_tree_t *chunks_ad, bool dirty, void *chunk, size_t size);
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bool chunk_dalloc_default(void *chunk, size_t size, unsigned arena_ind);
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void chunk_unmap(arena_t *arena, void *chunk, size_t size);
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bool chunk_boot(void);
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void chunk_prefork(void);
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void chunk_postfork_parent(void);
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void chunk_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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#ifndef JEMALLOC_ENABLE_INLINE
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extent_node_t *chunk_lookup(const void *chunk);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_CHUNK_C_))
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JEMALLOC_INLINE extent_node_t *
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chunk_lookup(const void *chunk)
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{
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return (rtree_get(&chunks_rtree, (uintptr_t)chunk));
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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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#include "jemalloc/internal/chunk_dss.h"
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#include "jemalloc/internal/chunk_mmap.h"
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