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 21
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 #define CHUNK_HOOKS_INITIALIZER { \
23 NULL, \
24 NULL, \
25 NULL, \
26 NULL, \
27 NULL, \
28 NULL, \
29 NULL \
30 }
31
32 #endif /* JEMALLOC_H_TYPES */
33 /******************************************************************************/
34 #ifdef JEMALLOC_H_STRUCTS
35
36 #endif /* JEMALLOC_H_STRUCTS */
37 /******************************************************************************/
38 #ifdef JEMALLOC_H_EXTERNS
39
40 extern size_t opt_lg_chunk;
41 extern const char *opt_dss;
42
43 extern rtree_t chunks_rtree;
44
45 extern size_t chunksize;
46 extern size_t chunksize_mask; /* (chunksize - 1). */
47 extern size_t chunk_npages;
48
49 extern const chunk_hooks_t chunk_hooks_default;
50
51 chunk_hooks_t chunk_hooks_get(arena_t *arena);
52 chunk_hooks_t chunk_hooks_set(arena_t *arena,
53 const chunk_hooks_t *chunk_hooks);
54
55 bool chunk_register(const void *chunk, const extent_node_t *node);
56 void chunk_deregister(const void *chunk, const extent_node_t *node);
57 void *chunk_alloc_base(size_t size);
58 void *chunk_alloc_cache(arena_t *arena, chunk_hooks_t *chunk_hooks,
59 void *new_addr, size_t size, size_t alignment, bool *zero,
60 bool dalloc_node);
61 void *chunk_alloc_wrapper(arena_t *arena, chunk_hooks_t *chunk_hooks,
62 void *new_addr, size_t size, size_t alignment, bool *zero, bool *commit);
63 void chunk_dalloc_cache(arena_t *arena, chunk_hooks_t *chunk_hooks,
64 void *chunk, size_t size, bool committed);
65 void chunk_dalloc_arena(arena_t *arena, chunk_hooks_t *chunk_hooks,
66 void *chunk, size_t size, bool zeroed, bool committed);
67 void chunk_dalloc_wrapper(arena_t *arena, chunk_hooks_t *chunk_hooks,
68 void *chunk, size_t size, bool committed);
69 bool chunk_purge_arena(arena_t *arena, void *chunk, size_t offset,
70 size_t length);
71 bool chunk_purge_wrapper(arena_t *arena, chunk_hooks_t *chunk_hooks,
72 void *chunk, size_t size, size_t offset, size_t length);
73 bool chunk_boot(void);
74 void chunk_prefork(void);
75 void chunk_postfork_parent(void);
76 void chunk_postfork_child(void);
77
78 #endif /* JEMALLOC_H_EXTERNS */
79 /******************************************************************************/
80 #ifdef JEMALLOC_H_INLINES
81
82 #ifndef JEMALLOC_ENABLE_INLINE
83 extent_node_t *chunk_lookup(const void *chunk, bool dependent);
84 #endif
85
86 #if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_CHUNK_C_))
87 JEMALLOC_INLINE extent_node_t *
chunk_lookup(const void * ptr,bool dependent)88 chunk_lookup(const void *ptr, bool dependent)
89 {
90
91 return (rtree_get(&chunks_rtree, (uintptr_t)ptr, dependent));
92 }
93 #endif
94
95 #endif /* JEMALLOC_H_INLINES */
96 /******************************************************************************/
97
98 #include "jemalloc/internal/chunk_dss.h"
99 #include "jemalloc/internal/chunk_mmap.h"
100