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 parameter CLOCK_MONOTONIC returns seconds since the 9 an unspecified point that cannot change. 10 Validity is checked by ensuring that the time returned is always 11 increasing. 12 */ 13 #include <stdio.h> 14 #include <time.h> 15 #include <sys/time.h> 16 #include <unistd.h> 17 #include "posixtest.h" 18 19 int main(void) 20 { 21 #ifdef CLOCK_MONOTONIC 22 23 struct timespec ts1, ts2, ts3, ts4; 24 25 /* Test that MONOTONIC CLOCK functionality really exists */ 26 if (sysconf(_SC_MONOTONIC_CLOCK) == -1) { 27 printf("CLOCK_MONOTONIC unsupported\n"); 28 return PTS_UNSUPPORTED; 29 } 30 31 if (clock_gettime(CLOCK_MONOTONIC, &ts1) != 0) { 32 printf("clock_gettime() failed\n"); 33 return PTS_UNRESOLVED; 34 } 35 36 if (clock_gettime(CLOCK_MONOTONIC, &ts2) != 0) { 37 printf("clock_gettime() failed\n"); 38 return PTS_UNRESOLVED; 39 } 40 41 sleep(1); 42 43 if (clock_gettime(CLOCK_MONOTONIC, &ts3) != 0) { 44 printf("clock_gettime() failed\n"); 45 return PTS_UNRESOLVED; 46 } 47 48 sleep(3); 49 if (clock_gettime(CLOCK_MONOTONIC, &ts4) != 0) { 50 printf("clock_gettime() failed\n"); 51 return PTS_UNRESOLVED; 52 } 53 54 if ((ts1.tv_sec <= ts2.tv_sec) && 55 (ts2.tv_sec <= ts3.tv_sec) && (ts3.tv_sec <= ts4.tv_sec)) { 56 printf("Test PASSED\n"); 57 return PTS_PASS; 58 } 59 60 printf("Test FAILED - ts1=%ld,ts2=%ld,ts3=%ld,ts4=%ld\n", 61 ts1.tv_sec, ts2.tv_sec, ts3.tv_sec, ts4.tv_sec); 62 return PTS_FAIL; 63 #else 64 printf("CLOCK_MONOTONIC unsupported\n"); 65 return PTS_UNSUPPORTED; 66 #endif 67 } 68
