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 nanosleep() causes the current thread to be suspended 9 * until the time interval in rqtp passes. 10 */ 11 #include <stdio.h> 12 #include <time.h> 13 #include "posixtest.h" 14 15 int main(void) 16 { 17 struct timespec tssleepfor, tsstorage, tsbefore, tsafter; 18 int sleepnsec = 3; 19 int slepts = 0, sleptns = 0; 20 21 if (clock_gettime(CLOCK_REALTIME, &tsbefore) == -1) { 22 perror("Error in clock_gettime()\n"); 23 return PTS_UNRESOLVED; 24 } 25 26 tssleepfor.tv_sec = 0; 27 tssleepfor.tv_nsec = sleepnsec; 28 if (nanosleep(&tssleepfor, &tsstorage) != 0) { 29 printf("nanosleep() did not return success\n"); 30 return PTS_UNRESOLVED; 31 } 32 33 if (clock_gettime(CLOCK_REALTIME, &tsafter) == -1) { 34 perror("Error in clock_gettime()\n"); 35 return PTS_UNRESOLVED; 36 } 37 38 /* 39 * Generic alg for calculating slept time. 40 */ 41 slepts = tsafter.tv_sec - tsbefore.tv_sec; 42 sleptns = tsafter.tv_nsec - tsbefore.tv_nsec; 43 if (sleptns < 0) { 44 sleptns = sleptns + 1000000000; 45 slepts = slepts - 1; 46 } 47 48 if ((slepts > 0) || (sleptns > sleepnsec)) { 49 printf("Test PASSED\n"); 50 return PTS_PASS; 51 } 52 53 printf("nanosleep() did not sleep long enough\n"); 54 return PTS_FAIL; 55 } 56
