mirror of
https://github.com/ziglang/zig.git
synced 2026-02-05 06:03:38 +00:00
49d1a4c562
also start prefering NtDll API. so far: * NtQueryInformationFile * NtClose adds a performance workaround for windows unicode conversion. but that should probably be removed before merging
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef MALLOC_IMPL_H
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#define MALLOC_IMPL_H
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#include <sys/mman.h>
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hidden void *__expand_heap(size_t *);
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hidden void __malloc_donate(char *, char *);
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hidden void *__memalign(size_t, size_t);
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struct chunk {
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size_t psize, csize;
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struct chunk *next, *prev;
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};
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struct bin {
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volatile int lock[2];
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struct chunk *head;
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struct chunk *tail;
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};
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#define SIZE_ALIGN (4*sizeof(size_t))
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#define SIZE_MASK (-SIZE_ALIGN)
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#define OVERHEAD (2*sizeof(size_t))
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#define MMAP_THRESHOLD (0x1c00*SIZE_ALIGN)
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#define DONTCARE 16
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#define RECLAIM 163840
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#define CHUNK_SIZE(c) ((c)->csize & -2)
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#define CHUNK_PSIZE(c) ((c)->psize & -2)
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#define PREV_CHUNK(c) ((struct chunk *)((char *)(c) - CHUNK_PSIZE(c)))
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#define NEXT_CHUNK(c) ((struct chunk *)((char *)(c) + CHUNK_SIZE(c)))
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#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
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#define CHUNK_TO_MEM(c) (void *)((char *)(c) + OVERHEAD)
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#define BIN_TO_CHUNK(i) (MEM_TO_CHUNK(&mal.bins[i].head))
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#define C_INUSE ((size_t)1)
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#define IS_MMAPPED(c) !((c)->csize & (C_INUSE))
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hidden void __bin_chunk(struct chunk *);
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hidden extern int __malloc_replaced;
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#endif
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