diff options
Diffstat (limited to 'lib/libc/stdio/fputc.c')
| -rw-r--r-- | lib/libc/stdio/fputc.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/libc/stdio/fputc.c b/lib/libc/stdio/fputc.c index c86f71161fc4..09b55d59a58e 100644 --- a/lib/libc/stdio/fputc.c +++ b/lib/libc/stdio/fputc.c @@ -39,10 +39,23 @@ static char sccsid[] = "@(#)fputc.c 8.1 (Berkeley) 6/4/93"; #endif /* LIBC_SCCS and not lint */ #include <stdio.h> +#ifdef _THREAD_SAFE +#include <pthread.h> +#include "pthread_private.h" +#endif +int fputc(c, fp) int c; register FILE *fp; { - return (putc(c, fp)); + int retval; +#ifdef _THREAD_SAFE + _thread_flockfile(fp,__FILE__,__LINE__); +#endif + retval = putc(c, fp); +#ifdef _THREAD_SAFE + _thread_funlockfile(fp); +#endif + return (retval); } |