nsprpub/pr/tests/stat.c
author Michael Wu <mwu@mozilla.com>
Thu, 10 May 2012 12:01:43 -0700
changeset 93716 d37d4edce6dd592f04afa606deb1ae327c07b4a4
parent 26462 9560711165646da2bff775379e30997efbf7e1fd
permissions -rw-r--r--
Update NSPR to NSPR_4_9_1_BETA1 tag, a=ted Includes bug 331299, 722125, 693329, 274013, 716564, 736962, 739469, 482002, 693329

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/*
 * Program to test different ways to get file info; right now it 
 * only works for solaris and OS/2.
 *
 */
#include "nspr.h"
#include "prpriv.h"
#include "prinrval.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef XP_OS2
#include <io.h>
#include <sys/types.h>
#include <sys/stat.h>
#endif

#define DEFAULT_COUNT 100000
PRInt32 count;

#ifndef XP_PC
char *filename = "/etc/passwd";
#else
char *filename = "..\\stat.c";
#endif

static void statPRStat(void)
{
    PRFileInfo finfo;
    PRInt32 index = count;
 
    for (;index--;) {
         PR_GetFileInfo(filename, &finfo);
    }
}

static void statStat(void)
{
    struct stat finfo;
    PRInt32 index = count;
 
    for (;index--;) {
        stat(filename, &finfo);
    }
}

/************************************************************************/

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);

    printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
}

int main(int argc, char **argv)
{
    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
    PR_STDIO_INIT();

    if (argc > 1) {
	count = atoi(argv[1]);
    } else {
	count = DEFAULT_COUNT;
    }

    Measure(statPRStat, "time to call PR_GetFileInfo()");
    Measure(statStat, "time to call stat()");

    PR_Cleanup();
}