chunk.h

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/******************************************************************************/
#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)
 
#define CHUNK_HOOKS_INITIALIZER {                   \
    NULL,                               \
    NULL,                               \
    NULL,                               \
    NULL,                               \
    NULL,                               \
    NULL,                               \
    NULL                                \
}
 
#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;
 
extern const chunk_hooks_t  chunk_hooks_default;
 
chunk_hooks_t   chunk_hooks_get(tsdn_t *tsdn, arena_t *arena);
chunk_hooks_t   chunk_hooks_set(tsdn_t *tsdn, arena_t *arena,
    const chunk_hooks_t *chunk_hooks);
 
bool    chunk_register(const void *chunk, const extent_node_t *node,
    bool *gdump);
void    chunk_deregister(const void *chunk, const extent_node_t *node);
void    *chunk_alloc_base(size_t size);
void    *chunk_alloc_cache(tsdn_t *tsdn, arena_t *arena,
    chunk_hooks_t *chunk_hooks, void *new_addr, size_t size, size_t alignment,
    size_t *sn, bool *zero, bool *commit, bool dalloc_node);
void    *chunk_alloc_wrapper(tsdn_t *tsdn, arena_t *arena,
    chunk_hooks_t *chunk_hooks, void *new_addr, size_t size, size_t alignment,
    size_t *sn, bool *zero, bool *commit);
void    chunk_dalloc_cache(tsdn_t *tsdn, arena_t *arena,
    chunk_hooks_t *chunk_hooks, void *chunk, size_t size, size_t sn,
    bool committed);
void    chunk_dalloc_wrapper(tsdn_t *tsdn, arena_t *arena,
    chunk_hooks_t *chunk_hooks, void *chunk, size_t size, size_t sn,
    bool zeroed, bool committed);
bool    chunk_purge_wrapper(tsdn_t *tsdn, arena_t *arena,
    chunk_hooks_t *chunk_hooks, void *chunk, size_t size, size_t offset,
    size_t length);
bool    chunk_boot(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 "chunk_dss.h"
#include "chunk_mmap.h"