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_PROCESS_CPUTIME_ID returns the CPU time of 9 the calling process. 10 Validity is checked by ensuring that the time returned is always 11 increasing. 12 This is only supported if _POSIX_CPUTIME is defined. 13 */ 14 #include <stdio.h> 15 #include <time.h> 16 #include <errno.h> 17 #include <sys/time.h> 18 #include <unistd.h> 19 #include "posixtest.h" 20 21 #define LARGENUMBER 900000 22 void dosomething() 23 { 24 int i; 25 for (i = 0; i < LARGENUMBER; i++) { 26 clock(); 27 } 28 } 29 30 int main(void) 31 { 32 #if _POSIX_CPUTIME == -1 33 printf("_POSIX_CPUTIME unsupported\n"); 34 return PTS_UNSUPPORTED; 35 #else 36 #ifdef CLOCK_PROCESS_CPUTIME_ID 37 struct timespec ts1, ts2, ts3, ts4; 38 39 if (sysconf(_SC_CPUTIME) == -1) { 40 printf("_POSIX_CPUTIME unsupported\n"); 41 return PTS_UNSUPPORTED; 42 } 43 44 if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts1) != 0) { 45 printf("clock_gettime() failed: errno %d\n", errno); 46 return PTS_UNRESOLVED; 47 } 48 49 dosomething(); 50 51 if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts2) != 0) { 52 printf("clock_gettime() failed: errno %d\n", errno); 53 return PTS_UNRESOLVED; 54 } 55 56 dosomething(); 57 58 if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts3) != 0) { 59 printf("clock_gettime() failed: errno %d\n", errno); 60 return PTS_UNRESOLVED; 61 } 62 63 dosomething(); 64 65 if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts4) != 0) { 66 printf("clock_gettime() failed: errno %d\n", errno); 67 return PTS_UNRESOLVED; 68 } 69 70 if ((ts1.tv_sec <= ts2.tv_sec) && 71 (ts2.tv_sec <= ts3.tv_sec) && (ts3.tv_sec <= ts4.tv_sec)) { 72 printf("Test PASSED\n"); 73 return PTS_PASS; 74 } 75 76 printf("Test FAILED - ts1=%ld,ts2=%ld,ts3=%ld,ts4=%ld\n", 77 ts1.tv_sec, ts2.tv_sec, ts3.tv_sec, ts4.tv_sec); 78 return PTS_FAIL; 79 #else 80 printf("CLOCK_PROCESS_CPUTIME_ID unsupported\n"); 81 return PTS_UNSUPPORTED; 82 #endif 83 #endif 84 } 85
