| /* |
| * Copyright (c) 2002-2003, Intel Corporation. All rights reserved. |
| * Created by: salwan.searty REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| |
| Test that sigtimedwait() returns -1 upon unsuccessful completion. |
| |
| NOTE: This program has commented out areas. The commented out functionality |
| sets a timer in case sigtimedwait() never returns, to help the program |
| from hanging. To make this program |
| runnable on a typical system, I've commented out the timer functionality |
| by default. However, if you do have a timers implementation on your |
| system, then it is recommened that you uncomment the timers-related lines |
| of code in this program. |
| |
| Steps: |
| 1. Register signal TIMERSIGNAL with the handler myhandler |
| (2.)Create and set a timer that expires in TIMERSEC seconds incase sigtimedwait() |
| never returns. |
| 3. Call sigtimedwait() to wait for non-pending signal SIGTOTEST for SIGTIMEDWAITSEC |
| seconds. |
| 4. Verify that sigtimedwait() returns a -1. |
| */ |
| |
| #define _XOPEN_REALTIME 1 |
| |
| #define TIMERSIGNAL SIGUSR1 |
| #define SIGTOTEST SIGUSR2 |
| #define TIMERSEC 2 |
| #define SIGTIMEDWAITSEC 0 |
| |
| #include <signal.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <time.h> |
| #include <unistd.h> |
| #include <sys/wait.h> |
| #include "posixtest.h" |
| |
| void myhandler(int signo) |
| { |
| printf |
| ("Test FAILED: %d seconds have elapsed and sigtimedwait() has not yet returned.\n", |
| TIMERSEC); |
| exit(PTS_FAIL); |
| } |
| |
| int main(void) |
| { |
| struct sigaction act; |
| |
| sigset_t selectset; |
| struct timespec ts; |
| /* |
| struct sigevent ev; |
| timer_t tid; |
| struct itimerspec its; |
| |
| its.it_interval.tv_sec = 0; |
| its.it_interval.tv_nsec = 0; |
| its.it_value.tv_sec = TIMERSEC; |
| its.it_value.tv_nsec = 0; |
| |
| ev.sigev_notify = SIGEV_SIGNAL; |
| ev.sigev_signo = TIMERSIGNAL; |
| */ |
| act.sa_flags = 0; |
| act.sa_handler = myhandler; |
| sigemptyset(&act.sa_mask); |
| sigaction(TIMERSIGNAL, &act, 0); |
| |
| sigemptyset(&selectset); |
| sigaddset(&selectset, SIGTOTEST); |
| |
| ts.tv_sec = SIGTIMEDWAITSEC; |
| ts.tv_nsec = 0; |
| /* |
| if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) { |
| perror("timer_create() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (timer_settime(tid, 0, &its, NULL) != 0) { |
| perror("timer_settime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| */ |
| if (sigtimedwait(&selectset, NULL, &ts) != -1) { |
| printf |
| ("Test FAILED: sigtimedwait() did not return with an error\n"); |
| return PTS_FAIL; |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |