diff options
Diffstat (limited to 'libc-top-half/musl/src/malloc/oldmalloc/malloc_impl.h')
-rw-r--r-- | libc-top-half/musl/src/malloc/oldmalloc/malloc_impl.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/malloc/oldmalloc/malloc_impl.h b/libc-top-half/musl/src/malloc/oldmalloc/malloc_impl.h new file mode 100644 index 0000000..e1cf477 --- /dev/null +++ b/libc-top-half/musl/src/malloc/oldmalloc/malloc_impl.h @@ -0,0 +1,39 @@ +#ifndef MALLOC_IMPL_H +#define MALLOC_IMPL_H + +#include <sys/mman.h> +#include "dynlink.h" + +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 |