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:  * Program to test different ways to get the time; right now it is tuned
michael@0:  * only for solaris.
michael@0:  *   solaris results (100000 iterations):
michael@0:  *          time to get time with time():   4.63 usec avg, 463 msec total
michael@0:  *     time to get time with gethrtime():   2.17 usec avg, 217 msec total
michael@0:  *  time to get time with gettimeofday():   1.25 usec avg, 125 msec total
michael@0:  *
michael@0:  *
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 "nspr.h"
michael@0: #include "prpriv.h"
michael@0: #include "prinrval.h"
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <stdlib.h>
michael@0: #include <string.h>
michael@0: #include <sys/time.h>
michael@0: 
michael@0: #define DEFAULT_COUNT 100000
michael@0: PRInt32 count;
michael@0: 
michael@0: time_t itime;
michael@0: hrtime_t ihrtime;
michael@0: 
michael@0: void
michael@0: ftime_init()
michael@0: {
michael@0:    itime = time(NULL);
michael@0:    ihrtime = gethrtime();
michael@0: }
michael@0: 
michael@0: time_t
michael@0: ftime()
michael@0: {
michael@0:         hrtime_t now = gethrtime();
michael@0: 
michael@0:         return itime + ((now - ihrtime) / 1000000000ll);
michael@0: }
michael@0: 
michael@0: static void timeTime(void)
michael@0: {
michael@0:     PRInt32 index = count;
michael@0:     time_t rv;
michael@0:  
michael@0:     for (;index--;)
michael@0:         rv = time(NULL);
michael@0: }
michael@0: 
michael@0: static void timeGethrtime(void)
michael@0: {
michael@0:     PRInt32 index = count;
michael@0:     time_t rv;
michael@0:  
michael@0:     for (;index--;)
michael@0:         rv = ftime();
michael@0: }
michael@0: 
michael@0: static void timeGettimeofday(void)
michael@0: {
michael@0:     PRInt32 index = count;
michael@0:     time_t rv;
michael@0:     struct timeval tp;
michael@0:  
michael@0:     for (;index--;)
michael@0:         rv = gettimeofday(&tp, NULL);
michael@0: }
michael@0: 
michael@0: static void timePRTime32(void)
michael@0: {
michael@0:     PRInt32 index = count;
michael@0:     PRInt32 rv32;
michael@0:     PRTime q;
michael@0:     PRTime rv;
michael@0: 
michael@0:     LL_I2L(q, 1000000);
michael@0:  
michael@0:     for (;index--;) {
michael@0:         rv = PR_Now();
michael@0:         LL_DIV(rv, rv, q);
michael@0:         LL_L2I(rv32, rv);
michael@0:     }
michael@0: }
michael@0: 
michael@0: static void timePRTime64(void)
michael@0: {
michael@0:     PRInt32 index = count;
michael@0:     PRTime rv;
michael@0:  
michael@0:     for (;index--;)
michael@0:         rv = PR_Now();
michael@0: }
michael@0: 
michael@0: /************************************************************************/
michael@0: 
michael@0: static void Measure(void (*func)(void), const char *msg)
michael@0: {
michael@0:     PRIntervalTime start, stop;
michael@0:     double d;
michael@0:     PRInt32 tot;
michael@0: 
michael@0:     start = PR_IntervalNow();
michael@0:     (*func)();
michael@0:     stop = PR_IntervalNow();
michael@0: 
michael@0:     d = (double)PR_IntervalToMicroseconds(stop - start);
michael@0:     tot = PR_IntervalToMilliseconds(stop-start);
michael@0: 
michael@0:     if (debug_mode) printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
michael@0: }
michael@0: 
michael@0: int main(int argc, char **argv)
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: 	PLOptStatus os;
michael@0: 	PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
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:          default:
michael@0:             break;
michael@0:         }
michael@0:     }
michael@0: 	PL_DestroyOptState(opt);
michael@0: 
michael@0:     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
michael@0:     PR_STDIO_INIT();
michael@0: 
michael@0:     if (argc > 1) {
michael@0: 	count = atoi(argv[1]);
michael@0:     } else {
michael@0: 	count = DEFAULT_COUNT;
michael@0:     }
michael@0: 
michael@0:     ftime_init();
michael@0: 
michael@0:     Measure(timeTime, "time to get time with time()");
michael@0:     Measure(timeGethrtime, "time to get time with gethrtime()");
michael@0:     Measure(timeGettimeofday, "time to get time with gettimeofday()");
michael@0:     Measure(timePRTime32, "time to get time with PR_Time() (32bit)");
michael@0:     Measure(timePRTime64, "time to get time with PR_Time() (64bit)");
michael@0: 
michael@0: 	PR_Cleanup();
michael@0: 	return 0;
michael@0: }
michael@0: 
michael@0: 
michael@0: