44 lines
1.4 KiB
C
44 lines
1.4 KiB
C
|
/* Declare an access pattern hint for files.
|
||
|
|
Copyright (C) 2010-2020 Free Software Foundation, Inc.
|
||
|
|
|
||
|
|
This program is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation, either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
/* Without this pragma, gcc suggests that (given !HAVE_POSIX_FADVISE)
|
||
|
|
the fdadvise function might be a candidate for attribute 'const'. */
|
||
|
|
#if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
|
||
|
|
# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <config.h>
|
||
|
|
#include "fadvise.h"
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include "ignore-value.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
fdadvise (int fd, off_t offset, off_t len, fadvice_t advice)
|
||
|
|
{
|
||
|
|
#if HAVE_POSIX_FADVISE
|
||
|
|
ignore_value (posix_fadvise (fd, offset, len, advice));
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
fadvise (FILE *fp, fadvice_t advice)
|
||
|
|
{
|
||
|
|
if (fp)
|
||
|
|
fdadvise (fileno (fp), 0, 0, advice);
|
||
|
|
}
|