1 /******************************************************************************/ 2 #ifdef JEMALLOC_H_TYPES 3 4 /* 5 * Size and alignment of memory chunks that are allocated by the OS's virtual 6 * memory system. 7 */ 8 #define LG_CHUNK_DEFAULT 22 9 10 /* Return the chunk address for allocation address a. */ 11 #define CHUNK_ADDR2BASE(a) \ 12 ((void *)((uintptr_t)(a) & ~chunksize_mask)) 13 14 /* Return the chunk offset of address a. */ 15 #define CHUNK_ADDR2OFFSET(a) \ 16 ((size_t)((uintptr_t)(a) & chunksize_mask)) 17 18 /* Return the smallest chunk multiple that is >= s. */ 19 #define CHUNK_CEILING(s) \ 20 (((s) + chunksize_mask) & ~chunksize_mask) 21 22 #endif /* JEMALLOC_H_TYPES */ 23 /******************************************************************************/ 24 #ifdef JEMALLOC_H_STRUCTS 25 26 #endif /* JEMALLOC_H_STRUCTS */ 27 /******************************************************************************/ 28 #ifdef JEMALLOC_H_EXTERNS 29 30 extern size_t opt_lg_chunk; 31 extern const char *opt_dss; 32 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; 37 38 extern rtree_t *chunks_rtree; 39 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. */ 45 46 void *chunk_alloc_base(size_t size); 47 void *chunk_alloc_arena(chunk_alloc_t *chunk_alloc, 48 chunk_dalloc_t *chunk_dalloc, unsigned arena_ind, size_t size, 49 size_t alignment, bool *zero); 50 void *chunk_alloc_default(size_t size, size_t alignment, bool *zero, 51 unsigned arena_ind); 52 void chunk_unmap(void *chunk, size_t size); 53 bool chunk_dalloc_default(void *chunk, size_t size, unsigned arena_ind); 54 bool chunk_boot(void); 55 void chunk_prefork(void); 56 void chunk_postfork_parent(void); 57 void chunk_postfork_child(void); 58 59 #endif /* JEMALLOC_H_EXTERNS */ 60 /******************************************************************************/ 61 #ifdef JEMALLOC_H_INLINES 62 63 #endif /* JEMALLOC_H_INLINES */ 64 /******************************************************************************/ 65 66 #include "jemalloc/internal/chunk_dss.h" 67 #include "jemalloc/internal/chunk_mmap.h" 68
