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author | Rich Felker <dalias@aerifal.cx> | 2020-06-02 21:40:05 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2020-06-02 21:40:05 -0400 |
commit | 135c94f097c8a82ba29cc184b1ee6a9a69da04ed (patch) | |
tree | da08ac8882d1518f289d243bb21a1e263a02b4f7 /src/malloc/malloc_impl.h | |
parent | cee88b76f72c826cc3d3360b853a3cf2ec472fd2 (diff) | |
download | musl-135c94f097c8a82ba29cc184b1ee6a9a69da04ed.tar.gz musl-135c94f097c8a82ba29cc184b1ee6a9a69da04ed.tar.xz musl-135c94f097c8a82ba29cc184b1ee6a9a69da04ed.zip |
move malloc_impl.h from src/internal to src/malloc
this reflects that it is no longer intended for consumption outside of the malloc implementation.
Diffstat (limited to 'src/malloc/malloc_impl.h')
-rw-r--r-- | src/malloc/malloc_impl.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/malloc/malloc_impl.h b/src/malloc/malloc_impl.h new file mode 100644 index 00000000..2c61b3ff --- /dev/null +++ b/src/malloc/malloc_impl.h @@ -0,0 +1,43 @@ +#ifndef MALLOC_IMPL_H +#define MALLOC_IMPL_H + +#include <sys/mman.h> +#include "dynlink.h" + +hidden void *__expand_heap(size_t *); + +hidden void *__memalign(size_t, size_t); + +struct chunk { + size_t psize, csize; + struct chunk *next, *prev; +}; + +struct bin { + volatile int lock[2]; + struct chunk *head; + struct chunk *tail; +}; + +#define SIZE_ALIGN (4*sizeof(size_t)) +#define SIZE_MASK (-SIZE_ALIGN) +#define OVERHEAD (2*sizeof(size_t)) +#define MMAP_THRESHOLD (0x1c00*SIZE_ALIGN) +#define DONTCARE 16 +#define RECLAIM 163840 + +#define CHUNK_SIZE(c) ((c)->csize & -2) +#define CHUNK_PSIZE(c) ((c)->psize & -2) +#define PREV_CHUNK(c) ((struct chunk *)((char *)(c) - CHUNK_PSIZE(c))) +#define NEXT_CHUNK(c) ((struct chunk *)((char *)(c) + CHUNK_SIZE(c))) +#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD) +#define CHUNK_TO_MEM(c) (void *)((char *)(c) + OVERHEAD) +#define BIN_TO_CHUNK(i) (MEM_TO_CHUNK(&mal.bins[i].head)) + +#define C_INUSE ((size_t)1) + +#define IS_MMAPPED(c) !((c)->csize & (C_INUSE)) + +hidden void __bin_chunk(struct chunk *); + +#endif |