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 the clock time can be set to 0, a large number, Y2K 9 * critical dates, and times around daylight savings. 10 * 11 * Test for CLOCK_REALTIME. (N/A for CLOCK_MONOTONIC as that clock 12 * cannot be set.) 13 */ 14 #include <stdio.h> 15 #include <time.h> 16 #include <stdint.h> 17 #include "posixtest.h" 18 19 #define NUMTESTS 6 20 21 #define ACCEPTABLESECDELTA 0 22 #define ACCEPTABLENSECDELTA 5000 23 24 static int testtimes[NUMTESTS][2] = { 25 {0, 0}, // zero 26 {INT32_MAX, 999999999}, // large number 27 {946713600, 999999999}, // Y2K - Jan 1, 2000 28 {951811200, 999999999}, // Y2K - Feb 29, 2000 29 {1078041600, 999999999}, // Y2K - Feb 29, 2004 30 {1049623200, 999999999}, // daylight savings 2003 31 }; 32 33 int main(int argc, char *argv[]) 34 { 35 struct timespec tpset, tpget, tsreset; 36 int secdelta, nsecdelta; 37 int failure = 0; 38 int i; 39 40 if (clock_gettime(CLOCK_REALTIME, &tsreset) != 0) { 41 perror("clock_gettime() did not return success\n"); 42 return PTS_UNRESOLVED; 43 } 44 45 for (i = 0; i < NUMTESTS; i++) { 46 tpset.tv_sec = testtimes[i][0]; 47 tpset.tv_nsec = testtimes[i][1]; 48 #ifdef DEBUG 49 printf("Test: %ds %dns\n", testtimes[i][0], testtimes[i][1]); 50 #endif 51 if (clock_settime(CLOCK_REALTIME, &tpset) == 0) { 52 if (clock_gettime(CLOCK_REALTIME, &tpget) == -1) { 53 printf("Error in clock_gettime()\n"); 54 return PTS_UNRESOLVED; 55 } 56 secdelta = tpget.tv_sec - tpset.tv_sec; 57 nsecdelta = tpget.tv_nsec - tpset.tv_nsec; 58 if (nsecdelta < 0) { 59 nsecdelta = nsecdelta + 1000000000; 60 secdelta = secdelta - 1; 61 } 62 #ifdef DEBUG 63 printf("Delta: %ds %dns\n", secdelta, nsecdelta); 64 #endif 65 if ((secdelta > ACCEPTABLESECDELTA) || (secdelta < 0)) { 66 printf("clock does not appear to be set\n"); 67 failure = 1; 68 } 69 if ((nsecdelta > ACCEPTABLENSECDELTA) || 70 (nsecdelta < 0)) { 71 printf("clock does not appear to be set\n"); 72 failure = 1; 73 } 74 } else { 75 printf("clock_settime() failed\n"); 76 return PTS_UNRESOLVED; 77 } 78 79 if (clock_settime(CLOCK_REALTIME, &tsreset) != 0) { 80 perror("clock_settime() did not return success\n"); 81 return PTS_UNRESOLVED; 82 } 83 } 84 85 if (clock_settime(CLOCK_REALTIME, &tsreset) != 0) { 86 perror("clock_settime() did not return success\n"); 87 return PTS_UNRESOLVED; 88 } 89 90 if (failure) { 91 printf("At least one test FAILED\n"); 92 return PTS_FAIL; 93 } 94 95 printf("All tests PASSED\n"); 96 return PTS_PASS; 97 } 98
