inrval.c (6660B)
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 /* 7 ** file: inrval.c 8 ** description: Interval conversion test. 9 ** Modification History: 10 ** 15-May-97 AGarcia- Converted the test to accomodate the debug_mode flag. 11 ** The debug mode will print all of the printfs associated with this 12 *test. 13 ** The regress mode will be the default mode. Since the regress tool 14 *limits 15 ** the output to a one line status:PASS or FAIL,all of the printf 16 *statements 17 ** have been handled with an if (debug_mode) statement. 18 ** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been 19 *updated to 20 ** recognize the return code from tha main program. 21 **/ 22 /*********************************************************************** 23 ** Includes 24 ***********************************************************************/ 25 /* Used to get the command line option */ 26 #include "plgetopt.h" 27 28 #include "prinit.h" 29 #include "obsolete/pralarm.h" 30 31 #include "prio.h" 32 #include "prprf.h" 33 #include "prlock.h" 34 #include "prlong.h" 35 #include "prcvar.h" 36 #include "prinrval.h" 37 #include "prtime.h" 38 39 #include "plgetopt.h" 40 41 #include <stdio.h> 42 #include <stdlib.h> 43 44 static PRIntn debug_mode; 45 static PRFileDesc* output; 46 47 static void TestConversions(void) { 48 PRIntervalTime ticks = PR_TicksPerSecond(); 49 50 if (debug_mode) { 51 PR_fprintf(output, "PR_TicksPerSecond: %ld\n\n", ticks); 52 PR_fprintf(output, "PR_SecondsToInterval(1): %ld\n", 53 PR_SecondsToInterval(1)); 54 PR_fprintf(output, "PR_MillisecondsToInterval(1000): %ld\n", 55 PR_MillisecondsToInterval(1000)); 56 PR_fprintf(output, "PR_MicrosecondsToInterval(1000000): %ld\n\n", 57 PR_MicrosecondsToInterval(1000000)); 58 59 PR_fprintf(output, "PR_SecondsToInterval(3): %ld\n", 60 PR_SecondsToInterval(3)); 61 PR_fprintf(output, "PR_MillisecondsToInterval(3000): %ld\n", 62 PR_MillisecondsToInterval(3000)); 63 PR_fprintf(output, "PR_MicrosecondsToInterval(3000000): %ld\n\n", 64 PR_MicrosecondsToInterval(3000000)); 65 66 PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, 67 PR_IntervalToSeconds(ticks)); 68 PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, 69 PR_IntervalToMilliseconds(ticks)); 70 PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, 71 PR_IntervalToMicroseconds(ticks)); 72 73 ticks *= 3; 74 PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, 75 PR_IntervalToSeconds(ticks)); 76 PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, 77 PR_IntervalToMilliseconds(ticks)); 78 PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, 79 PR_IntervalToMicroseconds(ticks)); 80 } /*end debug mode */ 81 } /* TestConversions */ 82 83 static void TestIntervalOverhead(void) { 84 /* Hopefully the optimizer won't delete this function */ 85 PRUint32 elapsed, per_call, loops = 1000000; 86 87 PRIntervalTime timeout, timein = PR_IntervalNow(); 88 while (--loops > 0) { 89 timeout = PR_IntervalNow(); 90 } 91 92 elapsed = 1000U * PR_IntervalToMicroseconds(timeout - timein); 93 per_call = elapsed / 1000000U; 94 PR_fprintf(output, "Overhead of 'PR_IntervalNow()' is %u nsecs\n\n", 95 per_call); 96 } /* TestIntervalOverhead */ 97 98 static void TestNowOverhead(void) { 99 PRTime timeout, timein; 100 PRInt32 overhead, loops = 1000000; 101 PRInt64 elapsed, per_call, ten23rd, ten26th; 102 103 LL_I2L(ten23rd, 1000); 104 LL_I2L(ten26th, 1000000); 105 106 timein = PR_Now(); 107 while (--loops > 0) { 108 timeout = PR_Now(); 109 } 110 111 LL_SUB(elapsed, timeout, timein); 112 LL_MUL(elapsed, elapsed, ten23rd); 113 LL_DIV(per_call, elapsed, ten26th); 114 LL_L2I(overhead, per_call); 115 PR_fprintf(output, "Overhead of 'PR_Now()' is %u nsecs\n\n", overhead); 116 } /* TestNowOverhead */ 117 118 static void TestIntervals(void) { 119 PRStatus rv; 120 PRUint32 delta; 121 PRInt32 seconds; 122 PRUint64 elapsed, thousand; 123 PRTime timein, timeout; 124 PRLock* ml = PR_NewLock(); 125 PRCondVar* cv = PR_NewCondVar(ml); 126 for (seconds = 0; seconds < 10; ++seconds) { 127 PRIntervalTime ticks = PR_SecondsToInterval(seconds); 128 PR_Lock(ml); 129 timein = PR_Now(); 130 rv = PR_WaitCondVar(cv, ticks); 131 timeout = PR_Now(); 132 PR_Unlock(ml); 133 LL_SUB(elapsed, timeout, timein); 134 LL_I2L(thousand, 1000); 135 LL_DIV(elapsed, elapsed, thousand); 136 LL_L2UI(delta, elapsed); 137 if (debug_mode) 138 PR_fprintf(output, 139 "TestIntervals: %swaiting %ld seconds took %ld msecs\n", 140 ((rv == PR_SUCCESS) ? "" : "FAILED "), seconds, delta); 141 } 142 PR_DestroyCondVar(cv); 143 PR_DestroyLock(ml); 144 if (debug_mode) { 145 PR_fprintf(output, "\n"); 146 } 147 } /* TestIntervals */ 148 149 static PRIntn PR_CALLBACK RealMain(int argc, char** argv) { 150 PRUint32 vcpu, cpus = 0, loops = 1000; 151 152 /* The command line argument: -d is used to determine if the test is being run 153 in debug mode. The regress tool requires only one line output:PASS or FAIL. 154 All of the printfs associated with this test has been handled with a if 155 (debug_mode) test. Usage: test_name -d 156 */ 157 158 /* main test */ 159 160 PLOptStatus os; 161 PLOptState* opt = PL_CreateOptState(argc, argv, "dl:c:"); 162 while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) { 163 if (PL_OPT_BAD == os) { 164 continue; 165 } 166 switch (opt->option) { 167 case 'd': /* debug mode */ 168 debug_mode = 1; 169 break; 170 case 'c': /* concurrency counter */ 171 cpus = atoi(opt->value); 172 break; 173 case 'l': /* loop counter */ 174 loops = atoi(opt->value); 175 break; 176 default: 177 break; 178 } 179 } 180 PL_DestroyOptState(opt); 181 182 output = PR_GetSpecialFD(PR_StandardOutput); 183 PR_fprintf(output, "inrval: Examine stdout to determine results.\n"); 184 185 if (cpus == 0) { 186 cpus = 8; 187 } 188 if (loops == 0) { 189 loops = 1000; 190 } 191 192 if (debug_mode > 0) { 193 PR_fprintf(output, "Inrval: Using %d loops\n", loops); 194 PR_fprintf(output, "Inrval: Using 1 and %d cpu(s)\n", cpus); 195 } 196 197 for (vcpu = 1; vcpu <= cpus; vcpu += cpus - 1) { 198 if (debug_mode) { 199 PR_fprintf(output, "\nInrval: Using %d CPU(s)\n\n", vcpu); 200 } 201 PR_SetConcurrency(vcpu); 202 203 TestNowOverhead(); 204 TestIntervalOverhead(); 205 TestConversions(); 206 TestIntervals(); 207 } 208 209 return 0; 210 } 211 212 int main(int argc, char** argv) { 213 PRIntn rv; 214 215 rv = PR_Initialize(RealMain, argc, argv, 0); 216 return rv; 217 } /* main */