gl/unlocked-io.h

   1 /* Prefer faster, non-thread-safe stdio functions if available.
   2
   3    Copyright (C) 2001, 2002 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License along
  16    with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 /* Written by Jim Meyering.  */
  20
  21 #ifndef UNLOCKED_IO_H
  22 # define UNLOCKED_IO_H 1
  23
  24 # ifndef USE_UNLOCKED_IO
  25 #  define USE_UNLOCKED_IO 1
  26 # endif
  27
  28 # if USE_UNLOCKED_IO
  29
  30 /* These are wrappers for functions/macros from GNU libc.
  31    The standard I/O functions are thread-safe.  These *_unlocked ones are
  32    more efficient but not thread-safe.  That they're not thread-safe is
  33    fine since all of the applications in this package are single threaded.  */
  34
  35 #  if HAVE_DECL_CLEARERR_UNLOCKED
  36 #   undef clearerr
  37 #   define clearerr(x) clearerr_unlocked (x)
  38 #  endif
  39 #  if HAVE_DECL_FEOF_UNLOCKED
  40 #   undef feof
  41 #   define feof(x) feof_unlocked (x)
  42 #  endif
  43 #  if HAVE_DECL_FERROR_UNLOCKED
  44 #   undef ferror
  45 #   define ferror(x) ferror_unlocked (x)
  46 #  endif
  47 #  if HAVE_DECL_FFLUSH_UNLOCKED
  48 #   undef fflush
  49 #   define fflush(x) fflush_unlocked (x)
  50 #  endif
  51 #  if HAVE_DECL_FGETS_UNLOCKED
  52 #   undef fgets
  53 #   define fgets(x,y,z) fgets_unlocked (x,y,z)
  54 #  endif
  55 #  if HAVE_DECL_FPUTC_UNLOCKED
  56 #   undef fputc
  57 #   define fputc(x,y) fputc_unlocked (x,y)
  58 #  endif
  59 #  if HAVE_DECL_FPUTS_UNLOCKED
  60 #   undef fputs
  61 #   define fputs(x,y) fputs_unlocked (x,y)
  62 #  endif
  63 #  if HAVE_DECL_FREAD_UNLOCKED
  64 #   undef fread
  65 #   define fread(w,x,y,z) fread_unlocked (w,x,y,z)
  66 #  endif
  67 #  if HAVE_DECL_FWRITE_UNLOCKED
  68 #   undef fwrite
  69 #   define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z)
  70 #  endif
  71 #  if HAVE_DECL_GETC_UNLOCKED
  72 #   undef getc
  73 #   define getc(x) getc_unlocked (x)
  74 #  endif
  75 #  if HAVE_DECL_GETCHAR_UNLOCKED
  76 #   undef getchar
  77 #   define getchar() getchar_unlocked ()
  78 #  endif
  79 #  if HAVE_DECL_PUTC_UNLOCKED
  80 #   undef putc
  81 #   define putc(x,y) putc_unlocked (x,y)
  82 #  endif
  83 #  if HAVE_DECL_PUTCHAR_UNLOCKED
  84 #   undef putchar
  85 #   define putchar(x) putchar_unlocked (x)
  86 #  endif
  87
  88 # endif /* USE_UNLOCKED_IO */
  89 #endif /* UNLOCKED_IO_H */