michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0: ** file:            inrval.c
michael@0: ** description:     Interval conversion test.
michael@0: ** Modification History:
michael@0: ** 15-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
michael@0: **	         The debug mode will print all of the printfs associated with this test.
michael@0: **			 The regress mode will be the default mode. Since the regress tool limits
michael@0: **           the output to a one line status:PASS or FAIL,all of the printf statements
michael@0: **			 have been handled with an if (debug_mode) statement.
michael@0: ** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
michael@0: **			recognize the return code from tha main program.
michael@0: **/
michael@0: /***********************************************************************
michael@0: ** Includes
michael@0: ***********************************************************************/
michael@0: /* Used to get the command line option */
michael@0: #include "plgetopt.h"
michael@0: 
michael@0: #include "prinit.h"
michael@0: #include "obsolete/pralarm.h"
michael@0: 
michael@0: #include "prio.h"
michael@0: #include "prprf.h"
michael@0: #include "prlock.h"
michael@0: #include "prlong.h"
michael@0: #include "prcvar.h"
michael@0: #include "prinrval.h"
michael@0: #include "prtime.h"
michael@0: 
michael@0: #include "plgetopt.h"
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <stdlib.h>
michael@0: 
michael@0: static PRIntn debug_mode;
michael@0: static PRFileDesc *output;
michael@0: 
michael@0: 
michael@0: static void TestConversions(void)
michael@0: {
michael@0:     PRIntervalTime ticks = PR_TicksPerSecond();
michael@0: 
michael@0: 	if (debug_mode) {
michael@0:     PR_fprintf(output, "PR_TicksPerSecond: %ld\n\n", ticks);
michael@0:     PR_fprintf(output, "PR_SecondsToInterval(1): %ld\n", PR_SecondsToInterval(1));
michael@0:     PR_fprintf(output, "PR_MillisecondsToInterval(1000): %ld\n", PR_MillisecondsToInterval(1000));
michael@0:     PR_fprintf(output, "PR_MicrosecondsToInterval(1000000): %ld\n\n", PR_MicrosecondsToInterval(1000000));
michael@0: 
michael@0:     PR_fprintf(output, "PR_SecondsToInterval(3): %ld\n", PR_SecondsToInterval(3));
michael@0:     PR_fprintf(output, "PR_MillisecondsToInterval(3000): %ld\n", PR_MillisecondsToInterval(3000));
michael@0:     PR_fprintf(output, "PR_MicrosecondsToInterval(3000000): %ld\n\n", PR_MicrosecondsToInterval(3000000));
michael@0: 
michael@0:     PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, PR_IntervalToSeconds(ticks));
michael@0:     PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, PR_IntervalToMilliseconds(ticks));
michael@0:     PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, PR_IntervalToMicroseconds(ticks));
michael@0: 
michael@0:     ticks *= 3;
michael@0:     PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, PR_IntervalToSeconds(ticks));
michael@0:     PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, PR_IntervalToMilliseconds(ticks));
michael@0:     PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, PR_IntervalToMicroseconds(ticks));
michael@0: 	} /*end debug mode */
michael@0: }  /* TestConversions */
michael@0: 
michael@0: static void TestIntervalOverhead(void)
michael@0: {
michael@0:     /* Hopefully the optimizer won't delete this function */
michael@0:     PRUint32 elapsed, per_call, loops = 1000000;
michael@0: 
michael@0:     PRIntervalTime timeout, timein = PR_IntervalNow();
michael@0:     while (--loops > 0)
michael@0:         timeout = PR_IntervalNow();
michael@0: 
michael@0:     elapsed = 1000U * PR_IntervalToMicroseconds(timeout - timein);
michael@0:     per_call = elapsed / 1000000U;
michael@0:     PR_fprintf(
michael@0:         output, "Overhead of 'PR_IntervalNow()' is %u nsecs\n\n", per_call);
michael@0: }  /* TestIntervalOverhead */
michael@0: 
michael@0: static void TestNowOverhead(void)
michael@0: {
michael@0:     PRTime timeout, timein;
michael@0:     PRInt32 overhead, loops = 1000000;
michael@0:     PRInt64 elapsed, per_call, ten23rd, ten26th;
michael@0: 
michael@0:     LL_I2L(ten23rd, 1000);
michael@0:     LL_I2L(ten26th, 1000000);
michael@0: 
michael@0:     timein = PR_Now();
michael@0:     while (--loops > 0)
michael@0:         timeout = PR_Now();
michael@0: 
michael@0:     LL_SUB(elapsed, timeout, timein);
michael@0:     LL_MUL(elapsed, elapsed, ten23rd);
michael@0:     LL_DIV(per_call, elapsed, ten26th);
michael@0:     LL_L2I(overhead, per_call);
michael@0:     PR_fprintf(
michael@0:         output, "Overhead of 'PR_Now()' is %u nsecs\n\n", overhead);
michael@0: }  /* TestNowOverhead */
michael@0: 
michael@0: static void TestIntervals(void)
michael@0: {
michael@0:     PRStatus rv;
michael@0:     PRUint32 delta;
michael@0:     PRInt32 seconds;
michael@0:     PRUint64 elapsed, thousand;
michael@0:     PRTime timein, timeout;
michael@0:     PRLock *ml = PR_NewLock();
michael@0:     PRCondVar *cv = PR_NewCondVar(ml);
michael@0:     for (seconds = 0; seconds < 10; ++seconds)
michael@0:     {
michael@0:         PRIntervalTime ticks = PR_SecondsToInterval(seconds);
michael@0:         PR_Lock(ml);
michael@0:         timein = PR_Now();
michael@0:         rv = PR_WaitCondVar(cv, ticks);
michael@0:         timeout = PR_Now();
michael@0:         PR_Unlock(ml);
michael@0:         LL_SUB(elapsed, timeout, timein);
michael@0:         LL_I2L(thousand, 1000);
michael@0:         LL_DIV(elapsed, elapsed, thousand);
michael@0:         LL_L2UI(delta, elapsed);
michael@0:         if (debug_mode) PR_fprintf(output, 
michael@0:             "TestIntervals: %swaiting %ld seconds took %ld msecs\n",
michael@0:             ((rv == PR_SUCCESS) ? "" : "FAILED "), seconds, delta);
michael@0:     }
michael@0:     PR_DestroyCondVar(cv);
michael@0:     PR_DestroyLock(ml);
michael@0:     if (debug_mode) PR_fprintf(output, "\n");
michael@0: }  /* TestIntervals */
michael@0: 
michael@0: static PRIntn PR_CALLBACK RealMain(int argc, char** argv)
michael@0: {
michael@0:     PRUint32 vcpu, cpus = 0, loops = 1000;
michael@0: 
michael@0: 	/* The command line argument: -d is used to determine if the test is being run
michael@0: 	in debug mode. The regress tool requires only one line output:PASS or FAIL.
michael@0: 	All of the printfs associated with this test has been handled with a if (debug_mode)
michael@0: 	test.
michael@0: 	Usage: test_name -d
michael@0: 	*/
michael@0: 
michael@0:  /* main test */
michael@0: 	
michael@0: 	PLOptStatus os;
michael@0: 	PLOptState *opt = PL_CreateOptState(argc, argv, "dl:c:");
michael@0: 	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
michael@0:     {
michael@0: 		if (PL_OPT_BAD == os) continue;
michael@0:         switch (opt->option)
michael@0:         {
michael@0:         case 'd':  /* debug mode */
michael@0: 			debug_mode = 1;
michael@0:             break;
michael@0:         case 'c':  /* concurrency counter */
michael@0: 			cpus = atoi(opt->value);
michael@0:             break;
michael@0:         case 'l':  /* loop counter */
michael@0: 			loops = atoi(opt->value);
michael@0:             break;
michael@0:          default:
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0: 	PL_DestroyOptState(opt);
michael@0: 	
michael@0:     output = PR_GetSpecialFD(PR_StandardOutput);
michael@0:     PR_fprintf(output, "inrval: Examine stdout to determine results.\n");
michael@0: 
michael@0:     if (cpus == 0) cpus = 8;
michael@0:     if (loops == 0) loops = 1000;
michael@0: 
michael@0:     if (debug_mode > 0)
michael@0:     {
michael@0:         PR_fprintf(output, "Inrval: Using %d loops\n", loops);
michael@0:         PR_fprintf(output, "Inrval: Using 1 and %d cpu(s)\n", cpus);
michael@0:     }
michael@0: 
michael@0:     for (vcpu = 1; vcpu <= cpus; vcpu += cpus - 1)
michael@0:     {
michael@0:         if (debug_mode)
michael@0:             PR_fprintf(output, "\nInrval: Using %d CPU(s)\n\n", vcpu);
michael@0:         PR_SetConcurrency(vcpu);
michael@0: 
michael@0:         TestNowOverhead();
michael@0:         TestIntervalOverhead();
michael@0:         TestConversions();
michael@0:         TestIntervals();
michael@0:     }
michael@0:         
michael@0:     return 0;
michael@0: }
michael@0: 
michael@0: 
michael@0: int main(int argc, char **argv)
michael@0: {
michael@0:     PRIntn rv;
michael@0:     
michael@0:     PR_STDIO_INIT();
michael@0:     rv = PR_Initialize(RealMain, argc, argv, 0);
michael@0:     return rv;
michael@0: }  /* main */
michael@0: