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 22

/* 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;

/* Protects stats_chunks; currently not used for any other purpose. */
extern malloc_mutex_t chunks_mtx;
/* Chunk statistics. */
extern chunk_stats_t stats_chunks;

extern rtree_t *chunks_rtree;

extern size_t chunksize;
extern size_t chunksize_mask; /* (chunksize - 1). */
extern size_t chunk_npages;
extern size_t map_bias; /* Number of arena chunk header pages. */
extern size_t arena_maxclass; /* Max size class for arenas. */

void *chunk_alloc(size_t size, size_t alignment, bool base, bool *zero,
 dss_prec_t dss_prec);
void chunk_unmap(void *chunk, size_t size);
void chunk_dealloc(void *chunk, size_t size, bool unmap);
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

#endif /* JEMALLOC_H_INLINES */
/******************************************************************************/

#include "jemalloc/internal/chunk_dss.h"
#include "jemalloc/internal/chunk_mmap.h"