| /* |
| * 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 relative timers still expire when the time interval |
| * has elapsed. [Test where clock_settime() sets timer forward in time.] |
| * |
| * Steps: |
| * - set a timer to expire in TIMERSEC |
| * - set the clock forward CLOCKOFFSET seconds |
| * - nanosleep for TIMERSEC+SLEEPDELTA seconds -> timer should expire |
| * - determine if the time remaining in nanosleep ~= SLEEPDELTA |
| * |
| * signal SIGTOTEST is used. |
| */ |
| #include <stdio.h> |
| #include <time.h> |
| #include <signal.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include "posixtest.h" |
| #include "helpers.h" |
| |
| #define TIMERSEC 5 |
| #define CLOCKOFFSET 4 |
| #define SLEEPDELTA 3 |
| #define ACCEPTABLEDELTA 1 |
| |
| #define SHORTTIME 1 |
| |
| #define SIGTOTEST SIGALRM |
| |
| void handler(int signo) |
| { |
| printf("Caught signal\n"); |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sigevent ev; |
| struct sigaction act; |
| struct timespec tsclock, ts, tsleft, tsreset; |
| struct itimerspec its; |
| timer_t tid; |
| sigset_t set; |
| |
| /* Check that we're root...can't call clock_settime with CLOCK_REALTIME otherwise */ |
| if (getuid() != 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 |
| * set up sigaction to catch signal |
| */ |
| ev.sigev_notify = SIGEV_SIGNAL; |
| ev.sigev_signo = SIGTOTEST; |
| |
| act.sa_handler=handler; |
| act.sa_flags=0; |
| |
| if (sigemptyset(&set) != 0 || sigemptyset(&act.sa_mask) != 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 (sigaction(SIGTOTEST, &act, 0) != 0) { |
| perror("sigaction() 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; |
| } |
| |
| its.it_interval.tv_sec = 0; its.it_interval.tv_nsec = 0; |
| its.it_value.tv_sec = TIMERSEC; its.it_value.tv_nsec = 0; |
| |
| if (timer_settime(tid, 0, &its, NULL) != 0) { |
| perror("timer_settime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (clock_gettime(CLOCK_REALTIME, &tsclock) != 0) { |
| printf("clock_gettime() did not return success\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| tsclock.tv_sec += CLOCKOFFSET; |
| getBeforeTime(&tsreset); |
| if (clock_settime(CLOCK_REALTIME, &tsclock) != 0) { |
| printf("clock_settime() was not successful\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| ts.tv_sec=TIMERSEC+SLEEPDELTA; |
| ts.tv_nsec=0; |
| |
| if (nanosleep(&ts, &tsleft) != -1) { |
| printf("nanosleep() not interrupted\n"); |
| return PTS_FAIL; |
| } |
| |
| if (abs(tsleft.tv_sec-SLEEPDELTA) <= ACCEPTABLEDELTA) { |
| printf("Test PASSED\n"); |
| tsreset.tv_sec += TIMERSEC; |
| setBackTime(tsreset); |
| 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; |
| } |