6 void *__mmap(void *, size_t, int, int, int, off_t);
7 int __munmap(void *, size_t);
8 void *__mremap(void *, size_t, size_t, int, ...);
9 int __madvise(void *, size_t, int);
11 void *__expand_heap(size_t *);
13 void __malloc_donate(char *, char *);
15 void *__memalign(size_t, size_t);
19 struct chunk *next, *prev;
28 #define SIZE_ALIGN (4*sizeof(size_t))
29 #define SIZE_MASK (-SIZE_ALIGN)
30 #define OVERHEAD (2*sizeof(size_t))
31 #define MMAP_THRESHOLD (0x1c00*SIZE_ALIGN)
33 #define RECLAIM 163840
35 #define CHUNK_SIZE(c) ((c)->csize & -2)
36 #define CHUNK_PSIZE(c) ((c)->psize & -2)
37 #define PREV_CHUNK(c) ((struct chunk *)((char *)(c) - CHUNK_PSIZE(c)))
38 #define NEXT_CHUNK(c) ((struct chunk *)((char *)(c) + CHUNK_SIZE(c)))
39 #define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
40 #define CHUNK_TO_MEM(c) (void *)((char *)(c) + OVERHEAD)
41 #define BIN_TO_CHUNK(i) (MEM_TO_CHUNK(&mal.bins[i].head))
43 #define C_INUSE ((size_t)1)
45 #define IS_MMAPPED(c) !((c)->csize & (C_INUSE))
47 hidden void __bin_chunk(struct chunk *);
49 hidden extern int __malloc_replaced;