compat/flockfile.c

   1 /*****************************************************************************
   2  * flockfile.c: POSIX unlocked I/O stream stubs
   3  *****************************************************************************
   4  * Copyright © 2011-2012 Rémi Denis-Courmont
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <stdio.h>
  26
  27 #ifdef _WIN32
  28 # ifndef HAVE__LOCK_FILE
  29 #  warning Broken SDK: VLC logs will be garbage.
  30 #  define _lock_file(s) ((void)(s))
  31 #  define _unlock_file(s) ((void)(s))
  32 #  undef _getc_nolock
  33 #  define _getc_nolock(s) getc(s)
  34 #  undef _putc_nolock
  35 #  define _putc_nolock(s,c) putc(s,c)
  36 # endif
  37
  38 void flockfile (FILE *stream)
  39 {
  40     _lock_file (stream);
  41 }
  42
  43 int ftrylockfile (FILE *stream)
  44 {
  45     flockfile (stream); /* Move along people, there is nothing to see here. */
  46     return 0;
  47 }
  48
  49 void funlockfile (FILE *stream)
  50 {
  51     _unlock_file (stream);
  52 }
  53
  54 int getc_unlocked (FILE *stream)
  55 {
  56     return _getc_nolock (stream);
  57 }
  58
  59 int putc_unlocked (int c, FILE *stream)
  60 {
  61     return _putc_nolock (c, stream);
  62 }
  63
  64 #else
  65 # error flockfile not implemented on your platform!
  66 #endif
  67
  68 int getchar_unlocked (void)
  69 {
  70     return getc_unlocked (stdin);
  71 }
  72
  73 int putchar_unlocked (int c)
  74 {
  75     return putc_unlocked (c, stdout);
  76 }