kc3-lang/gnulib/m4/i-ring.m4

• Show log

  Commit

• Hash : 7f01591a
  Author :
  Date : 2006-11-12T17:35:38
  

  Make fts (in FTS_CWDFD mode) more efficient by caching a few open
  file descriptors.  This also averts a failure on systems with
  native openat support when a traversed directory lacks "x" access.
  * lib/fts_.h: Include "i-ring.h"
  (struct FTS) [fts_fd_ring]: New member.
  * lib/fts.c (RESTORE_INITIAL_CWD): Also call fd_ring_clear.
  (FCHDIR): Add parentheses.
  (fd_ring_check, fd_ring_print) [!FTS_DEBUG]: Define away.
  (cwd_advance_fd): Add a 3rd parameter.  Adjust all callers.
  When descending, rather than simply closing the previous
  fts_cwd_fd value, push that file descriptor onto the ring.
  (same_fd, fd_ring_print, fd_ring_check) [FTS_DEBUG]: New functions.
  (fts_open): Initialize the new fd_ring member.
  (fts_close): Clear the ring.
  (fts_safe_changedir): When possible, use our new fd_ring to skip
  the diropen and fstat and dev/ino comparison that would normally
  accompany a virtual `chdir ("..")'.
  
  * modules/fts (Depends-on): Add i-ring.
  * modules/i-ring: New module.
  * lib/i-ring.c, lib/i-ring.h, lib/i-ring-test.c: New files.
  * m4/i-ring.m4: New file.
  

Download

• m4/i-ring.m4

• # serial 1
  dnl Copyright (C) 2006 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_I_RING],
  [
    AC_LIBOBJ([i-ring])
  ])
  

Download