fadvise.h

   1 /*
   2  * Copyright (C) 2012-2020 all contributors <cmogstored-public@yhbt.net>
   3  * License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
   4  */
   5 #if defined(HAVE_POSIX_FADVISE)
   6 static inline void mog_fadv_sequential(int fd, off_t offset, off_t len)
   7 {
   8         int rc = posix_fadvise(fd, offset, len, POSIX_FADV_SEQUENTIAL);
   9
  10         if (rc == 0) return;
  11
  12         assert(errno != EBADF && errno != ESPIPE &&
  13                "BUG: posix_fadvise(POSIX_FADV_SEQUENTIAL) failed");
  14 }
  15
  16 static inline void mog_fadv_noreuse(int fd, off_t offset, off_t len)
  17 {
  18         int rc = posix_fadvise(fd, offset, len, POSIX_FADV_NOREUSE);
  19
  20         if (rc == 0) return;
  21
  22         assert(errno != EBADF && errno != ESPIPE &&
  23                "BUG: posix_fadvise(POSIX_FADV_NOREUSE) failed");
  24 }
  25 #else
  26 static inline void mog_fadv_sequential(int fd, off_t offset, off_t len)
  27 {
  28 }
  29 static inline void mog_fadv_noreuse(int fd, off_t offset, off_t len)
  30 {
  31 }
  32 #endif