| /* |
| * Copyright (c) 2002, Intel Corporation. All rights reserved. |
| * Created by: julie.n.fleischer 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 timer_settime() uses an absolute clock if TIMER_ABSTIME is |
| * set in flags. |
| * |
| * Uses the same steps as 1-1.c to determine how long the timer lasted. |
| * In order to use an absolute clock, the timer time is determined by: |
| * - Get current time. |
| * - Set the timer to TIMERSEC+current time. |
| * - After the timer goes off, ensure that the timer went off within |
| * ACCEPTABLEDELTA of TIMERSEC seconds. |
| * |
| * For this test, signal SIGTOTEST will be used, clock CLOCK_REALTIME |
| * will be used. |
| */ |
| |
| #include <time.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| |
| #define SIGTOTEST SIGALRM |
| #define TIMERSEC 2 |
| #define SLEEPDELTA 3 |
| #define ACCEPTABLEDELTA 1 |
| |
| void handler(int signo) |
| { |
| printf("Caught signal\n"); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sigevent ev; |
| struct sigaction act; |
| timer_t tid; |
| struct itimerspec its; |
| struct timespec beforets, ts, tsleft; |
| int flags = 0; |
| |
| ev.sigev_notify = SIGEV_SIGNAL; |
| ev.sigev_signo = SIGTOTEST; |
| |
| act.sa_handler=handler; |
| act.sa_flags=0; |
| |
| if (sigemptyset(&act.sa_mask) == -1) { |
| perror("Error calling sigemptyset\n"); |
| return PTS_UNRESOLVED; |
| } |
| if (sigaction(SIGTOTEST, &act, 0) == -1) { |
| perror("Error calling sigaction\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) { |
| perror("timer_create() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (clock_gettime(CLOCK_REALTIME, &beforets) != 0) { |
| perror("clock_gettime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| its.it_interval.tv_sec = 0; |
| its.it_interval.tv_nsec = 0; |
| its.it_value.tv_sec = beforets.tv_sec+TIMERSEC; |
| its.it_value.tv_nsec = beforets.tv_nsec; |
| |
| ts.tv_sec=TIMERSEC+SLEEPDELTA; |
| ts.tv_nsec=0; |
| |
| flags |= TIMER_ABSTIME; |
| if (timer_settime(tid, flags, &its, NULL) != 0) { |
| perror("timer_settime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (nanosleep(&ts, &tsleft) != -1) { |
| perror("nanosleep() not interrupted\n"); |
| return PTS_FAIL; |
| } |
| |
| if (abs(tsleft.tv_sec-SLEEPDELTA) <= ACCEPTABLEDELTA) { |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } else { |
| printf("Timer did not last for correct amount of time\n"); |
| printf("timer: %d != correct %d\n", |
| (int) ts.tv_sec- (int) tsleft.tv_sec, |
| TIMERSEC); |
| return PTS_FAIL; |
| } |
| |
| printf("This code should not be executed.\n"); |
| return PTS_UNRESOLVED; |
| } |