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/*
* 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_gettime() sets sets itimerspec.it_value to the
* amount of time remaining in the middle of a timer.
* - Create and arm a timer for TIMERSEC seconds.
* - Sleep for SLEEPSEC < TIMERSEC.
* - Call timer_gettime().
* - Ensure the value returned is within ACCEPTABLEDELTA less than
* TIMERSEC-SLEEPSEC.
*
* Signal SIGCONT will be used so that it will not affect the test if
* the timer expires.
* 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 TIMERSEC 8
#define SLEEPSEC 2
#define ACCEPTABLEDELTA 1
int main(int argc, char *argv[])
{
struct sigevent ev;
timer_t tid;
struct itimerspec itsset, itsget;
int delta;
ev.sigev_notify = SIGEV_SIGNAL;
ev.sigev_signo = SIGCONT;
itsset.it_interval.tv_sec = 0;
itsset.it_interval.tv_nsec = 0;
itsset.it_value.tv_sec = TIMERSEC;
itsset.it_value.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, &itsset, NULL) != 0) {
perror("timer_settime() did not return success\n");
return PTS_UNRESOLVED;
}
if (sleep(SLEEPSEC) != 0) {
perror("sleep() did not return 0\n");
return PTS_UNRESOLVED;
}
if (timer_gettime(tid, &itsget) != 0) {
perror("timer_gettime() did not return success\n");
return PTS_UNRESOLVED;
}
delta = (itsset.it_value.tv_sec - SLEEPSEC) - itsget.it_value.tv_sec;
if (delta < 0) {
printf("FAIL: timer_gettime() value > time expected left\n");
printf("%d > %d\n", (int) itsget.it_value.tv_sec,
(int) itsset.it_value.tv_sec - SLEEPSEC);
return PTS_FAIL;
}
if (delta <= ACCEPTABLEDELTA) {
printf("Test PASSED\n");
return PTS_PASS;
} else {
printf("FAIL: timer_gettime() value !~= time expected left\n");
printf("%d !~= %d\n", (int) itsget.it_value.tv_sec,
(int) itsset.it_value.tv_sec - SLEEPSEC);
return PTS_FAIL;
}
printf("This code should not be executed\n");
return PTS_UNRESOLVED;
}