| /* |
| * 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 timers are not allowed to expire before their scheduled |
| * time. |
| * |
| * Test for a variety of timer values on absolute timers. |
| * Steps: |
| * - get time T0 |
| * - add offset to T0 to give T1 |
| * - set the timer to expire at T1 |
| * - wait for the timer to expire |
| * - get time T2 |
| * - ensure T2 >= T1 |
| * |
| * 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 TIMERVALUESEC 2 |
| #define TIMERINTERVALSEC 5 |
| #define INCREMENT 1 |
| #define ACCEPTABLEDELTA 1 |
| |
| #define NUMTESTS 6 |
| |
| static int timeroffsets[NUMTESTS][2] = { {0, 90000000}, {1, 0}, |
| {1, 30000000}, {2, 0}, |
| {3, 5000}, {4, 5} }; |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sigevent ev; |
| timer_t tid; |
| struct itimerspec its; |
| struct timespec tsbefore, tsafter; |
| sigset_t set; |
| int sig; |
| int i; |
| int failure = 0; |
| int flags = 0; |
| |
| /* |
| * set up signal set containing SIGTOTEST that will be used |
| * in call to sigwait immediately after timer is set |
| */ |
| |
| if (sigemptyset(&set) == -1) { |
| perror("sigemptyset() failed\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigaddset(&set, SIGTOTEST) == -1) { |
| perror("sigaddset() failed\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigprocmask (SIG_BLOCK, &set, NULL) == -1) { |
| perror("sigprocmask() failed\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* |
| * set up timer to perform action SIGTOTEST on expiration |
| */ |
| ev.sigev_notify = SIGEV_SIGNAL; |
| ev.sigev_signo = SIGTOTEST; |
| |
| if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) { |
| perror("timer_create() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| flags |= TIMER_ABSTIME; |
| its.it_interval.tv_sec = 0; its.it_interval.tv_nsec = 0; |
| for (i = 0; i < NUMTESTS; i++) { |
| if (clock_gettime(CLOCK_REALTIME, &tsbefore) != 0) { |
| perror("clock_gettime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (tsbefore.tv_nsec + timeroffsets[i][1] < 1000000000) { |
| its.it_value.tv_sec = tsbefore.tv_sec + |
| timeroffsets[i][0]; |
| its.it_value.tv_nsec = tsbefore.tv_nsec + |
| timeroffsets[i][1]; |
| } else { |
| its.it_value.tv_sec = tsbefore.tv_sec + |
| timeroffsets[i][0] + 1; |
| its.it_value.tv_nsec = tsbefore.tv_nsec + |
| timeroffsets[i][1] - |
| 1000000000; |
| } |
| |
| printf("Test for value %d sec %d nsec\n", |
| (int) its.it_value.tv_sec, |
| (int) its.it_value.tv_nsec); |
| |
| if (timer_settime(tid, flags, &its, NULL) != 0) { |
| perror("timer_settime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigwait(&set, &sig) == -1) { |
| perror("sigwait() failed\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (clock_gettime(CLOCK_REALTIME, &tsafter) != 0) { |
| perror("clock_gettime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| printf("Timer expired %d sec %d nsec\n", |
| (int) tsafter.tv_sec, |
| (int) tsafter.tv_nsec); |
| if (tsafter.tv_sec < its.it_value.tv_sec) { |
| printf("FAIL: Timer expired %d sec < %d sec\n", |
| (int) tsafter.tv_sec, |
| (int) its.it_value.tv_sec); |
| failure = 1; |
| } else if (tsafter.tv_sec == its.it_value.tv_sec) { |
| if (tsafter.tv_nsec < its.it_value.tv_nsec) { |
| printf("FAIL: Timer expired %d nsec < %d nsec\n", |
| (int) tsafter.tv_nsec, |
| (int) its.it_value.tv_nsec); |
| failure = 1; |
| } |
| } |
| } |
| |
| if (timer_delete(tid) != 0) { |
| perror("timer_delete() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (failure) { |
| printf("timer_settime() failed on at least one value\n"); |
| return PTS_FAIL; |
| } else { |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |
| } |