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- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /*
- * The contents of this file are subject to the Netscape Public License
- * Version 1.0 (the "NPL"); you may not use this file except in
- * compliance with the NPL. You may obtain a copy of the NPL at
- * http://www.mozilla.org/NPL/
- *
- * Software distributed under the NPL is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
- * for the specific language governing rights and limitations under the
- * NPL.
- *
- * The Initial Developer of this code under the NPL is Netscape
- * Communications Corporation. Portions created by Netscape are
- * Copyright (C) 1998 Netscape Communications Corporation. All Rights
- * Reserved.
- */
-
- /*
- * Program to test different ways to get the time; right now it is tuned
- * only for solaris.
- * solaris results (100000 iterations):
- * time to get time with time(): 4.63 usec avg, 463 msec total
- * time to get time with gethrtime(): 2.17 usec avg, 217 msec total
- * time to get time with gettimeofday(): 1.25 usec avg, 125 msec total
- *
- *
- */
- /***********************************************************************
- ** Includes
- ***********************************************************************/
- /* Used to get the command line option */
- #include "plgetopt.h"
-
- #include "nspr.h"
- #include "prpriv.h"
- #include "prinrval.h"
-
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- #define DEFAULT_COUNT 100000
- PRInt32 count;
-
- time_t itime;
- hrtime_t ihrtime;
-
- void
- ftime_init()
- {
- itime = time(NULL);
- ihrtime = gethrtime();
- }
-
- time_t
- ftime()
- {
- hrtime_t now = gethrtime();
-
- return itime + ((now - ihrtime) / 1000000000ll);
- }
-
- static void timeTime(void)
- {
- PRInt32 index = count;
- time_t rv;
-
- for (;index--;)
- rv = time(NULL);
- }
-
- static void timeGethrtime(void)
- {
- PRInt32 index = count;
- time_t rv;
-
- for (;index--;)
- rv = ftime();
- }
-
- #include <sys/time.h>
- static void timeGettimeofday(void)
- {
- PRInt32 index = count;
- time_t rv;
- struct timeval tp;
-
- for (;index--;)
- rv = gettimeofday(&tp);
- }
-
- static void timePRTime32(void)
- {
- PRInt32 index = count;
- PRInt32 rv32;
- PRTime q;
- PRTime rv;
-
- LL_I2L(q, 1000000);
-
- for (;index--;) {
- rv = PR_Now();
- LL_DIV(rv, rv, q);
- LL_L2I(rv32, rv);
- }
- }
-
- static void timePRTime64(void)
- {
- PRInt32 index = count;
- PRTime rv;
-
- for (;index--;)
- rv = PR_Now();
- }
-
- /************************************************************************/
-
- static void Measure(void (*func)(void), const char *msg)
- {
- PRIntervalTime start, stop;
- double d;
- PRInt32 tot;
-
- start = PR_IntervalNow();
- (*func)();
- stop = PR_IntervalNow();
-
- d = (double)PR_IntervalToMicroseconds(stop - start);
- tot = PR_IntervalToMilliseconds(stop-start);
-
- if (debug_mode) printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
- }
-
- void main(int argc, char **argv)
- {
- /* The command line argument: -d is used to determine if the test is being run
- in debug mode. The regress tool requires only one line output:PASS or FAIL.
- All of the printfs associated with this test has been handled with a if (debug_mode)
- test.
- Usage: test_name -d
- */
- PLOptStatus os;
- PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
- while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
- {
- if (PL_OPT_BAD == os) continue;
- switch (opt->option)
- {
- case 'd': /* debug mode */
- debug_mode = 1;
- break;
- default:
- break;
- }
- }
- PL_DestroyOptState(opt);
-
- PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
- PR_STDIO_INIT();
-
- if (argc > 1) {
- count = atoi(argv[1]);
- } else {
- count = DEFAULT_COUNT;
- }
-
- ftime_init();
-
- Measure(timeTime, "time to get time with time()");
- Measure(timeGethrtime, "time to get time with gethrtime()");
- Measure(timeGettimeofday, "time to get time with gettimeofday()");
- Measure(timePRTime32, "time to get time with PR_Time() (32bit)");
- Measure(timePRTime64, "time to get time with PR_Time() (64bit)");
-
- PR_Cleanup();
- return 0;
- }
-
-
-
-