diff options
Diffstat (limited to 'libc/stdio/putchar.c')
| -rw-r--r-- | libc/stdio/putchar.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/libc/stdio/putchar.c b/libc/stdio/putchar.c new file mode 100644 index 000000000..20f5aadcc --- /dev/null +++ b/libc/stdio/putchar.c @@ -0,0 +1,44 @@ +/* Copyright (C) 2004 Manuel Novoa III <mjn3@codepoet.org> + * + * GNU Library General Public License (LGPL) version 2 or later. + * + * Dedicated to Toni. See uClibc/DEDICATION.mjn3 for details. + */ + +#include "_stdio.h" + +#undef putchar_unlocked +#undef putchar + +#ifdef __DO_UNLOCKED + +weak_alias(__putchar_unlocked,putchar_unlocked); +#ifndef __UCLIBC_HAS_THREADS__ +weak_alias(__putchar_unlocked,putchar); +#endif + +int __putchar_unlocked(int c) +{ + register FILE *stream = stdout; + + return __PUTC_UNLOCKED_MACRO(c, stream); +} + +#elif defined __UCLIBC_HAS_THREADS__ + +int putchar(int c) +{ + register FILE *stream = stdout; + + if (stream->__user_locking != 0) { + return __PUTC_UNLOCKED_MACRO(c, stream); + } else { + int retval; + __STDIO_ALWAYS_THREADLOCK(stream); + retval = __PUTC_UNLOCKED_MACRO(c, stream); + __STDIO_ALWAYS_THREADUNLOCK(stream); + return retval; + } +} + +#endif |