1 /* 2 ** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved. 3 ** Distributed under the terms of the Haiku License. 4 */ 5 6 7 #include <errno.h> 8 #include <unistd.h> 9 #include <sys/time.h> 10 11 #include <errno_private.h> 12 #include <syscalls.h> 13 14 15 uint 16 alarm(unsigned int sec) 17 { 18 struct itimerval value, oldValue; 19 20 value.it_interval.tv_sec = value.it_interval.tv_usec = 0; 21 value.it_value.tv_sec = sec; 22 value.it_value.tv_usec = 0; 23 if (setitimer(ITIMER_REAL, &value, &oldValue) < 0) 24 return -1; 25 26 if (oldValue.it_value.tv_usec) 27 oldValue.it_value.tv_sec++; 28 29 return oldValue.it_value.tv_sec; 30 } 31 32