root/lib/unlocked-io.h

INCLUDED FROM

     1 /* Prefer faster, non-thread-safe stdio functions if available.
     2 
     3    Copyright (C) 2001-2004, 2009-2023 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 3 of the License, or
     8    (at your option) 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
    16    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
    17 
    18 /* Written by Jim Meyering.  */
    19 
    20 #ifndef UNLOCKED_IO_H
    21 # define UNLOCKED_IO_H 1
    22 
    23 /* These are wrappers for functions/macros from the GNU C library, and
    24    from other C libraries supporting POSIX's optional thread-safe functions.
    25 
    26    The standard I/O functions are thread-safe.  These *_unlocked ones are
    27    more efficient but not thread-safe.  That they're not thread-safe is
    28    fine since all of the applications in this package are single threaded.
    29 
    30    Also, some code that is shared with the GNU C library may invoke
    31    the *_unlocked functions directly.  On hosts that lack those
    32    functions, invoke the non-thread-safe versions instead.  */
    33 
    34 /* This file uses HAVE_DECL_*_UNLOCKED.  */
    35 # if !_GL_CONFIG_H_INCLUDED
    36 #  error "Please include config.h first."
    37 # endif
    38 
    39 # include <stdio.h>
    40 
    41 # if HAVE_DECL_CLEARERR_UNLOCKED || defined clearerr_unlocked
    42 #  undef clearerr
    43 #  define clearerr(x) clearerr_unlocked (x)
    44 # else
    45 #  define clearerr_unlocked(x) clearerr (x)
    46 # endif
    47 
    48 # if HAVE_DECL_FEOF_UNLOCKED || defined feof_unlocked
    49 #  undef feof
    50 #  define feof(x) feof_unlocked (x)
    51 # else
    52 #  define feof_unlocked(x) feof (x)
    53 # endif
    54 
    55 # if HAVE_DECL_FERROR_UNLOCKED || defined ferror_unlocked
    56 #  undef ferror
    57 #  define ferror(x) ferror_unlocked (x)
    58 # else
    59 #  define ferror_unlocked(x) ferror (x)
    60 # endif
    61 
    62 # if HAVE_DECL_FFLUSH_UNLOCKED || defined fflush_unlocked
    63 #  undef fflush
    64 #  define fflush(x) fflush_unlocked (x)
    65 # else
    66 #  define fflush_unlocked(x) fflush (x)
    67 # endif
    68 
    69 # if HAVE_DECL_FGETS_UNLOCKED || defined fgets_unlocked
    70 #  undef fgets
    71 #  define fgets(x,y,z) fgets_unlocked (x,y,z)
    72 # else
    73 #  define fgets_unlocked(x,y,z) fgets (x,y,z)
    74 # endif
    75 
    76 # if HAVE_DECL_FPUTC_UNLOCKED || defined fputc_unlocked
    77 #  undef fputc
    78 #  define fputc(x,y) fputc_unlocked (x,y)
    79 # else
    80 #  define fputc_unlocked(x,y) fputc (x,y)
    81 # endif
    82 
    83 # if HAVE_DECL_FPUTS_UNLOCKED || defined fputs_unlocked
    84 #  undef fputs
    85 #  define fputs(x,y) fputs_unlocked (x,y)
    86 # else
    87 #  define fputs_unlocked(x,y) fputs (x,y)
    88 # endif
    89 
    90 # if HAVE_DECL_FREAD_UNLOCKED || defined fread_unlocked
    91 #  undef fread
    92 #  define fread(w,x,y,z) fread_unlocked (w,x,y,z)
    93 # else
    94 #  define fread_unlocked(w,x,y,z) fread (w,x,y,z)
    95 # endif
    96 
    97 # if HAVE_DECL_FWRITE_UNLOCKED || defined fwrite_unlocked
    98 #  undef fwrite
    99 #  define fwrite(w,x,y,z) fwrite_unlocked (w,x,y,z)
   100 # else
   101 #  define fwrite_unlocked(w,x,y,z) fwrite (w,x,y,z)
   102 # endif
   103 
   104 # if HAVE_DECL_GETC_UNLOCKED || defined get_unlocked
   105 #  undef getc
   106 #  define getc(x) getc_unlocked (x)
   107 # else
   108 #  define getc_unlocked(x) getc (x)
   109 # endif
   110 
   111 # if HAVE_DECL_GETCHAR_UNLOCKED || defined getchar_unlocked
   112 #  undef getchar
   113 #  define getchar() getchar_unlocked ()
   114 # else
   115 #  define getchar_unlocked() getchar ()
   116 # endif
   117 
   118 # if HAVE_DECL_PUTC_UNLOCKED || defined putc_unlocked
   119 #  undef putc
   120 #  define putc(x,y) putc_unlocked (x,y)
   121 # else
   122 #  define putc_unlocked(x,y) putc (x,y)
   123 # endif
   124 
   125 # if HAVE_DECL_PUTCHAR_UNLOCKED || defined putchar_unlocked
   126 #  undef putchar
   127 #  define putchar(x) putchar_unlocked (x)
   128 # else
   129 #  define putchar_unlocked(x) putchar (x)
   130 # endif
   131 
   132 # undef flockfile
   133 # define flockfile(x) ((void) 0)
   134 
   135 # undef ftrylockfile
   136 # define ftrylockfile(x) 0
   137 
   138 # undef funlockfile
   139 # define funlockfile(x) ((void) 0)
   140 
   141 #endif /* UNLOCKED_IO_H */