1 /******************************************************************************/
2 #ifdef JEMALLOC_H_TYPES
5 * Size and alignment of memory chunks that are allocated by the OS's virtual
8 #define LG_CHUNK_DEFAULT 22
10 /* Return the chunk address for allocation address a. */
11 #define CHUNK_ADDR2BASE(a) \
12 ((void *)((uintptr_t)(a) & ~chunksize_mask))
14 /* Return the chunk offset of address a. */
15 #define CHUNK_ADDR2OFFSET(a) \
16 ((size_t)((uintptr_t)(a) & chunksize_mask))
18 /* Return the smallest chunk multiple that is >= s. */
19 #define CHUNK_CEILING(s) \
20 (((s) + chunksize_mask) & ~chunksize_mask)
22 #endif /* JEMALLOC_H_TYPES */
23 /******************************************************************************/
24 #ifdef JEMALLOC_H_STRUCTS
26 #endif /* JEMALLOC_H_STRUCTS */
27 /******************************************************************************/
28 #ifdef JEMALLOC_H_EXTERNS
30 extern size_t opt_lg_chunk;
31 extern const char *opt_dss;
33 /* Protects stats_chunks; currently not used for any other purpose. */
34 extern malloc_mutex_t chunks_mtx;
35 /* Chunk statistics. */
36 extern chunk_stats_t stats_chunks;
38 extern rtree_t *chunks_rtree;
40 extern size_t chunksize;
41 extern size_t chunksize_mask; /* (chunksize - 1). */
42 extern size_t chunk_npages;
43 extern size_t map_bias; /* Number of arena chunk header pages. */
44 extern size_t arena_maxclass; /* Max size class for arenas. */
46 void *chunk_alloc(size_t size, size_t alignment, bool base, bool *zero,
48 void chunk_unmap(void *chunk, size_t size);
49 void chunk_dealloc(void *chunk, size_t size, bool unmap);
50 bool chunk_boot(void);
51 void chunk_prefork(void);
52 void chunk_postfork_parent(void);
53 void chunk_postfork_child(void);
55 #endif /* JEMALLOC_H_EXTERNS */
56 /******************************************************************************/
57 #ifdef JEMALLOC_H_INLINES
59 #endif /* JEMALLOC_H_INLINES */
60 /******************************************************************************/
62 #include "jemalloc/internal/chunk_dss.h"
63 #include "jemalloc/internal/chunk_mmap.h"