diff options
Diffstat (limited to 'libc/sysdeps/linux/common/alarm.c')
| -rw-r--r-- | libc/sysdeps/linux/common/alarm.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/alarm.c b/libc/sysdeps/linux/common/alarm.c new file mode 100644 index 000000000..a0d6669f9 --- /dev/null +++ b/libc/sysdeps/linux/common/alarm.c @@ -0,0 +1,34 @@ +/* vi: set sw=4 ts=4: */ +/* + * alarm() for uClibc + * + * Copyright (C) 2000-2004 by Erik Andersen <andersen@codpoet.org> + * + * GNU Library General Public License (LGPL) version 2 or later. + */ + +#include "syscalls.h" +#include <unistd.h> +#ifdef __NR_alarm +_syscall1(unsigned int, alarm, unsigned int, seconds); +#else +#include <sys/time.h> +unsigned int alarm(unsigned int seconds) +{ + struct itimerval old, new; + unsigned int retval; + + new.it_value.tv_usec = 0; + new.it_interval.tv_sec = 0; + new.it_interval.tv_usec = 0; + new.it_value.tv_sec = (long int) seconds; + if (setitimer(ITIMER_REAL, &new, &old) < 0) { + return 0; + } + retval = old.it_value.tv_sec; + if (old.it_value.tv_usec) { + ++retval; + } + return retval; +} +#endif |