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