| /* |
| * 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 if clock_settime() changes the value for CLOCK_REALTIME, |
| * then any absolute timers will use the new time for expiration. |
| * |
| * Steps: |
| * - get time T0 |
| * - create/enable a timer to expire at T1 = T0 + TIMEROFFSET |
| * - sleep SLEEPTIME seconds (SLEEPTIME should be < TIMEROFFSET, |
| * but > ACCEPTABLEDELTA) |
| * - set time back to T0 |
| * - wait for the timer to expire |
| * - get time T2 |
| * - ensure that: T2 >= T1 and (T2-T1) <= ACCEPTABLEDELTA |
| * |
| * signal SIGTOTEST is used. |
| * |
| * adam.li: I think should check that (abs(T2-T1) <= ACCEPTABLEDELTA) |
| * 2004-04-30 |
| */ |
| #include <stdio.h> |
| #include <time.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include "posixtest.h" |
| #include "helpers.h" |
| |
| // SLEEPTIME < TIMEROFFSET |
| // SLEEPTIME > ACCEPTABLEDELTA |
| #define SLEEPTIME 3 |
| #define TIMEROFFSET 9 |
| #define ACCEPTABLEDELTA 1 |
| |
| #define SIGTOTEST SIGALRM |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sigevent ev; |
| struct timespec tpT0, tpT2, tpreset; |
| struct itimerspec its; |
| timer_t tid; |
| int delta; |
| int sig; |
| sigset_t set; |
| int flags = 0; |
| |
| /* Check that we're root...can't call clock_settime with CLOCK_REALTIME otherwise */ |
| if (geteuid() != 0) |
| { |
| printf("Run this test as ROOT, not as a Regular User\n"); |
| return PTS_UNTESTED; |
| } |
| |
| /* |
| * set up sigevent for timer |
| * set up signal set for sigwait |
| */ |
| ev.sigev_notify = SIGEV_SIGNAL; |
| ev.sigev_signo = SIGTOTEST; |
| |
| if (sigemptyset(&set) != 0) { |
| perror("sigemptyset() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigaddset(&set, SIGTOTEST) != 0) { |
| perror("sigaddset() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) { |
| perror("sigprocmask() failed\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (clock_gettime(CLOCK_REALTIME, &tpT0) != 0) { |
| perror("clock_gettime() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| 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; |
| its.it_value.tv_sec = tpT0.tv_sec + TIMEROFFSET; |
| its.it_value.tv_nsec = tpT0.tv_nsec; |
| if (timer_settime(tid, flags, &its, NULL) != 0) { |
| perror("timer_settime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| sleep(SLEEPTIME); |
| getBeforeTime(&tpreset); |
| if (clock_settime(CLOCK_REALTIME, &tpT0) != 0) { |
| perror("clock_settime() was not successful"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sigwait(&set, &sig) == -1) { |
| perror("sigwait() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (clock_gettime(CLOCK_REALTIME, &tpT2) != 0) { |
| printf("clock_gettime() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| delta = tpT2.tv_sec - its.it_value.tv_sec; |
| |
| // add back time waited to reset value and reset time |
| tpreset.tv_sec += tpT2.tv_sec - tpT0.tv_sec; |
| setBackTime(tpreset); |
| |
| printf("delta: %d\n", delta); |
| if ((delta <= ACCEPTABLEDELTA) && (delta >= 0)) { |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } else { |
| printf("FAIL: Ended %d, not %d\n", |
| (int) tpT2.tv_sec, |
| (int) its.it_value.tv_sec); |
| return PTS_FAIL; |
| } |
| |
| printf("This code should not be executed.\n"); |
| return PTS_UNRESOLVED; |
| } |