Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib/mmap-util.h @ 9354:687ac828b964 HEAD

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lib-index: modseqs weren't tracked properly within session when changes were done.
author Timo Sirainen <tss@iki.fi>
date Tue, 01 Sep 2009 13:05:03 -0400
parents 6a64e64fa3a3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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6410
e4eb71ae8e96 Changed .h ifdef/defines to use <NAME>_H format.
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1 #ifndef MMAP_UTIL_H
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2 #define MMAP_UTIL_H
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3
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4 #include <unistd.h>
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5
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6 #ifdef HAVE_LINUX_MREMAP
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7 # define __USE_GNU /* for MREMAP_MAYMOVE */
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8 #endif
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9
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10 #include <sys/mman.h>
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11 #undef __USE_GNU
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12
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13 #if !defined (MREMAP_MAYMOVE) && !defined (HAVE_LINUX_MREMAP)
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14 # define MREMAP_MAYMOVE 1
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15 #endif
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16
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17 #ifndef HAVE_MADVISE
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18 # define madvise my_madvise
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19 int my_madvise(void *start, size_t length, int advice);
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20 # ifndef MADV_NORMAL
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21 # define MADV_NORMAL 0
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22 # define MADV_RANDOM 0
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23 # define MADV_SEQUENTIAL 0
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24 # define MADV_WILLNEED 0
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25 # define MADV_DONTNEED 0
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26 # endif
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27 #endif
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28
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29 void *mmap_file(int fd, size_t *length, int prot);
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30 void *mmap_ro_file(int fd, size_t *length);
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31 void *mmap_rw_file(int fd, size_t *length);
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32
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33 /* for allocating anonymous mmap()s, with portable mremap(). these must not
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34 be mixed with any standard mmap calls. */
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35 void *mmap_anon(size_t length);
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36 void *mremap_anon(void *old_address, size_t old_size, size_t new_size,
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37 unsigned long flags);
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38 int munmap_anon(void *start, size_t length);
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39
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40 size_t mmap_get_page_size(void) ATTR_CONST;
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41
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42 #endif