pjs/nsprpub/pr/tests/stat.c

89 строки
2.1 KiB
C

/* -*- 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 file info; right now it
* only works for solaris.
*
*/
#include "nspr.h"
#include "prpriv.h"
#include "prinrval.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define DEFAULT_COUNT 100000
PRInt32 count;
static void statPRStat(void)
{
PRFileInfo finfo;
PRInt32 index = count;
for (;index--;) {
PR_GetFileInfo("/etc/passwd", &finfo);
}
}
static void statStat(void)
{
struct stat finfo;
PRInt32 index = count;
for (;index--;) {
stat("/etc/passwd", &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);
}
void 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();
}