gl/lib/fadvise.c

   1 /* Declare an access pattern hint for files.
   2    Copyright (C) 2010-2024 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18 #include "fadvise.h"
  19
  20 #include <stdio.h>
  21 #include <fcntl.h>
  22 #include "ignore-value.h"
  23
  24 void
  25 fdadvise (int fd, off_t offset, off_t len, fadvice_t advice)
  26 {
  27 #if HAVE_POSIX_FADVISE
  28   ignore_value (posix_fadvise (fd, offset, len, advice));
  29 #endif
  30 }
  31
  32 void
  33 fadvise (FILE *fp, fadvice_t advice)
  34 {
  35   if (fp)
  36     fdadvise (fileno (fp), 0, 0, advice);
  37 }