1 /* 2 * Copyright (c) 2002, Intel Corporation. All rights reserved. 3 * Created by: julie.n.fleischer REMOVE-THIS AT intel DOT com 4 * This file is licensed under the GPL license. For the full content 5 * of this license, see the COPYING file at the top level of this 6 * source tree. 7 8 * Test that if TIMER_ABSTIME is set in flags, then if clock_nanosleep() 9 * parameter rqtp specifies a time in the past, clock_nanosleep() 10 * returns immediately and no suspension occurs. 11 * 12 * - Get the current time. 13 * - Set clock_nanosleep() to sleep until current time - SLEEPSEC 14 * seconds. 15 * - Get the current time after sleeping and ensure it is within 16 * ACCEPTABLEDELTA of current time (i.e., didn't sleep) 17 */ 18 #include <stdio.h> 19 #include <time.h> 20 #include "posixtest.h" 21 22 #define SLEEPSEC 3 23 #define ACCEPTABLEDELTA 1 24 25 int main(void) 26 { 27 struct timespec tssleep, tsbefore, tsafter; 28 int sleepuntilsec, flags = 0; 29 30 if (clock_gettime(CLOCK_REALTIME, &tsbefore) != 0) { 31 perror("clock_gettime() did not return success\n"); 32 return PTS_UNRESOLVED; 33 } 34 35 sleepuntilsec = tsbefore.tv_sec - SLEEPSEC; 36 tssleep.tv_sec = sleepuntilsec; 37 tssleep.tv_nsec = tsbefore.tv_nsec; 38 39 flags |= TIMER_ABSTIME; 40 if (clock_nanosleep(CLOCK_REALTIME, flags, &tssleep, NULL) != 0) { 41 printf("clock_nanosleep() did not return success\n"); 42 return PTS_UNRESOLVED; 43 } 44 45 if (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) { 46 perror("Error in clock_gettime()\n"); 47 return PTS_UNRESOLVED; 48 } 49 50 if (tsafter.tv_sec >= tsbefore.tv_sec) { 51 if (tsafter.tv_sec <= (tsbefore.tv_sec + ACCEPTABLEDELTA)) { 52 printf("Test PASSED\n"); 53 return PTS_PASS; 54 } else { 55 printf("FAIL: clock_nanosleep() slept\n"); 56 return PTS_FAIL; 57 } 58 } 59 60 printf("FAIL: error in clock_gettime()\n"); 61 return PTS_FAIL; 62 } 63
