/*    * 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 TIMERNSEC nanoseconds. * - Sleep for SLEEPNSEC < TIMERNSEC. * - Call timer_gettime(). * - Ensure the value returned is within ACCEPTABLEDELTA less than *   TIMERNSEC-SLEEPNSEC. * * 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 "compat.h"#include "posixtest.h"#define TIMERNSEC 80000000#define SLEEPNSEC 40000000#define ACCEPTABLEDELTA 3000000timer_t tid;pthread_t th;void *th_code(void *arg){	struct itimerspec itsset, itsget;	struct timespec ts;	int deltans;	itsset.it_interval.tv_sec = 0;	itsset.it_interval.tv_nsec = 0;	itsset.it_value.tv_sec = 0;	itsset.it_value.tv_nsec = TIMERNSEC;		if (timer_settime(tid, 0, &itsset, NULL) != 0) {		perror("timer_settime() did not return success\n");		return PTS_UNRESOLVED;	}	ts.tv_sec=0;	ts.tv_nsec=SLEEPNSEC;	if (nanosleep(&ts, NULL) != 0) {		perror("nanosleep() did not return success\n");		return PTS_UNRESOLVED;	}	if (timer_gettime(tid, &itsget) != 0) {		perror("timer_gettime() did not return success\n");		return PTS_UNRESOLVED;	}	/*	 * Algorithm for determining success:	 * - itsget must be < itsset	 * - itsset-itsget nsec must be <= ACCEPTABLEDELTA	 */	if (itsget.it_value.tv_sec > 0) {	  printf("FAIL:  timer_gettime() value > time expected left\n");	  printf("%d seconds > 0 seconds\n", 		 (int) itsget.it_value.tv_sec);	  return PTS_FAIL;	}	deltans=(itsset.it_value.tv_nsec - ts.tv_nsec)- itsget.it_value.tv_nsec;	if (deltans < 0) {		printf("FAIL:  timer_gettime() value > time expected left\n");		printf("%d > %d\n", (int) itsget.it_value.tv_nsec, 				(int) itsset.it_value.tv_nsec - 					(int) ts.tv_nsec);		return PTS_FAIL;	}	if (deltans <= 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_nsec, 				(int) itsset.it_value.tv_nsec - 					(int) ts.tv_nsec);		return PTS_FAIL;	}	printf("This code should not be executed\n");	return PTS_UNRESOLVED;}int init_module(void){  int err=0;  struct sigevent ev;    ev.sigev_notify = SIGEV_SIGNAL;  ev.sigev_signo = SIGCONT;  if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {    perror("timer_create() did not return success\n");    return PTS_UNRESOLVED;  }  err=pthread_create(&th,NULL,th_code,0);  return err;}void cleanup_module(void){  timer_delete(tid);  pthread_delete_np(th);}