46 lines
1.1 KiB
C
46 lines
1.1 KiB
C
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/* Copyright (c) 2015 Ryan Castellucci, All Rights Reserved */
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#ifndef __MMAPF_H_
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#define __MMAPF_H_
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typedef struct {
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void *mem;
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size_t mmap_sz;
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size_t file_sz;
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int fd;
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} mmapf_ctx;
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// file flags
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#define MMAPF_RD 0x0001
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#define MMAPF_WR 0x0002
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#define MMAPF_RW (MMAPF_RD|MMAPF_WR)
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#define MMAPF_CR 0x0004
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#define MMAPF_EX 0x0008
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// advise flags
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#define MMAPF_RND 0x0100
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#define MMAPF_SEQ 0x0200
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#define MMAPF_PRE 0x0400
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#define MMAPF_COW 0x0800
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#define MMAPF_NOREUSE 0x1000
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#define MMAPF_WILLNEED 0x2000
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#define MMAPF_DONTNEED 0x4000
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// convenience
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#define MMAPF_RNDRD (MMAPF_RD|MMAPF_RND|MMAPF_PRE|MMAPF_WILLNEED)
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#define MMAPF_RNDUP (MMAPF_RW|MMAPF_RND|MMAPF_PRE|MMAPF_WILLNEED)
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#define MMAPF_SEQCR (MMAPF_WR|MMAPF_SEQ|MMAPF_CR|MMAPF_EX|MMAPF_NOREUSE|MMAPF_DONTNEED)
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// returns
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#define MMAPF_OKAY 0
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#define MMAPF_EXFIRST 1000
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#define MMAPF_ENREG 1001
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#define MMAPF_ESIZE 1002
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#define MMAPF_EXLAST 1003
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char * mmapf_strerror(int);
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int mmapf(mmapf_ctx *, const unsigned char *, size_t, int);
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int munmapf(mmapf_ctx *);
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/* vim: set ts=2 sw=2 et ai si: */
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#endif /* __MMAPF_H_ */
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