server-skynet-source-3rd-je.../include/jemalloc/internal/chunk.h
Jason Evans 5bd879646c Change default chunk size from 256 KiB to 2 MiB.
This change improves interaction with transparent huge pages, e.g.
reduced page faults (at least in the absence of unused dirty page
purging).
2015-07-15 17:15:26 -07:00

90 lines
3.1 KiB
C

/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
/*
* Size and alignment of memory chunks that are allocated by the OS's virtual
* memory system.
*/
#define LG_CHUNK_DEFAULT 21
/* Return the chunk address for allocation address a. */
#define CHUNK_ADDR2BASE(a) \
((void *)((uintptr_t)(a) & ~chunksize_mask))
/* Return the chunk offset of address a. */
#define CHUNK_ADDR2OFFSET(a) \
((size_t)((uintptr_t)(a) & chunksize_mask))
/* Return the smallest chunk multiple that is >= s. */
#define CHUNK_CEILING(s) \
(((s) + chunksize_mask) & ~chunksize_mask)
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS
#endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS
extern size_t opt_lg_chunk;
extern const char *opt_dss;
extern rtree_t chunks_rtree;
extern size_t chunksize;
extern size_t chunksize_mask; /* (chunksize - 1). */
extern size_t chunk_npages;
bool chunk_register(const void *chunk, const extent_node_t *node);
void chunk_deregister(const void *chunk, const extent_node_t *node);
void *chunk_alloc_base(size_t size);
void *chunk_alloc_cache(arena_t *arena, void *new_addr, size_t size,
size_t alignment, bool *zero, bool dalloc_node);
void *chunk_alloc_default(void *new_addr, size_t size, size_t alignment,
bool *zero, unsigned arena_ind);
void *chunk_alloc_wrapper(arena_t *arena, chunk_alloc_t *chunk_alloc,
void *new_addr, size_t size, size_t alignment, bool *zero);
void chunk_record(arena_t *arena, extent_tree_t *chunks_szad,
extent_tree_t *chunks_ad, bool cache, void *chunk, size_t size,
bool zeroed);
void chunk_dalloc_cache(arena_t *arena, void *chunk, size_t size);
void chunk_dalloc_arena(arena_t *arena, void *chunk, size_t size,
bool zeroed);
bool chunk_dalloc_default(void *chunk, size_t size, unsigned arena_ind);
void chunk_dalloc_wrapper(arena_t *arena, chunk_dalloc_t *chunk_dalloc,
void *chunk, size_t size);
bool chunk_purge_arena(arena_t *arena, void *chunk, size_t offset,
size_t length);
bool chunk_purge_default(void *chunk, size_t offset, size_t length,
unsigned arena_ind);
bool chunk_purge_wrapper(arena_t *arena, chunk_purge_t *chunk_purge,
void *chunk, size_t offset, size_t length);
bool chunk_boot(void);
void chunk_prefork(void);
void chunk_postfork_parent(void);
void chunk_postfork_child(void);
#endif /* JEMALLOC_H_EXTERNS */
/******************************************************************************/
#ifdef JEMALLOC_H_INLINES
#ifndef JEMALLOC_ENABLE_INLINE
extent_node_t *chunk_lookup(const void *chunk, bool dependent);
#endif
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_CHUNK_C_))
JEMALLOC_INLINE extent_node_t *
chunk_lookup(const void *ptr, bool dependent)
{
return (rtree_get(&chunks_rtree, (uintptr_t)ptr, dependent));
}
#endif
#endif /* JEMALLOC_H_INLINES */
/******************************************************************************/
#include "jemalloc/internal/chunk_dss.h"
#include "jemalloc/internal/chunk_mmap.h"