libc/stdio/putchar.c

   1 /* Copyright (C) 2004       Manuel Novoa III    <mjn3@codepoet.org>
   2  *
   3  * GNU Library General Public License (LGPL) version 2 or later.
   4  *
   5  * Dedicated to Toni.  See uClibc/DEDICATION.mjn3 for details.
   6  */
   7
   8 #include "_stdio.h"
   9
  10
  11 #undef putchar
  12 #ifdef __DO_UNLOCKED
  13
  14 #undef putchar_unlocked
  15 int putchar_unlocked(int c)
  16 {
  17         register FILE *stream = stdout;
  18
  19         return __PUTC_UNLOCKED_MACRO(c, stream);
  20 }
  21
  22 #ifndef __UCLIBC_HAS_THREADS__
  23 strong_alias(putchar_unlocked,putchar)
  24 #endif
  25
  26 #elif defined __UCLIBC_HAS_THREADS__
  27
  28 int putchar(int c)
  29 {
  30         register FILE *stream = stdout;
  31
  32         if (stream->__user_locking != 0) {
  33                 return __PUTC_UNLOCKED_MACRO(c, stream);
  34         } else {
  35                 int retval;
  36                 __STDIO_ALWAYS_THREADLOCK(stream);
  37                 retval = __PUTC_UNLOCKED_MACRO(c, stream);
  38                 __STDIO_ALWAYS_THREADUNLOCK(stream);
  39                 return retval;
  40         }
  41 }
  42
  43 #endif