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lightning-sunbird  0.9+nobinonly
stat.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
00007  * the License. You may obtain a copy of the License at
00008  * http://www.mozilla.org/MPL/
00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 1998-2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
00029  * under the terms of either the GPL or the LGPL, and not to allow others to
00030  * use your version of this file under the terms of the MPL, indicate your
00031  * decision by deleting the provisions above and replace them with the notice
00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039  * Program to test different ways to get file info; right now it 
00040  * only works for solaris and OS/2.
00041  *
00042  */
00043 #include "nspr.h"
00044 #include "prpriv.h"
00045 #include "prinrval.h"
00046 
00047 #include <stdio.h>
00048 #include <stdlib.h>
00049 #include <string.h>
00050 
00051 #ifdef XP_OS2
00052 #include <io.h>
00053 #include <sys/types.h>
00054 #include <sys/stat.h>
00055 #endif
00056 
00057 #define DEFAULT_COUNT 100000
00058 PRInt32 count;
00059 
00060 #ifndef XP_PC
00061 char *filename = "/etc/passwd";
00062 #else
00063 char *filename = "..\\stat.c";
00064 #endif
00065 
00066 static void statPRStat(void)
00067 {
00068     PRFileInfo finfo;
00069     PRInt32 index = count;
00070  
00071     for (;index--;) {
00072          PR_GetFileInfo(filename, &finfo);
00073     }
00074 }
00075 
00076 static void statStat(void)
00077 {
00078     struct stat finfo;
00079     PRInt32 index = count;
00080  
00081     for (;index--;) {
00082         stat(filename, &finfo);
00083     }
00084 }
00085 
00086 /************************************************************************/
00087 
00088 static void Measure(void (*func)(void), const char *msg)
00089 {
00090     PRIntervalTime start, stop;
00091     double d;
00092     PRInt32 tot;
00093 
00094     start = PR_IntervalNow();
00095     (*func)();
00096     stop = PR_IntervalNow();
00097 
00098     d = (double)PR_IntervalToMicroseconds(stop - start);
00099     tot = PR_IntervalToMilliseconds(stop-start);
00100 
00101     printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
00102 }
00103 
00104 void main(int argc, char **argv)
00105 {
00106     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
00107     PR_STDIO_INIT();
00108 
00109     if (argc > 1) {
00110        count = atoi(argv[1]);
00111     } else {
00112        count = DEFAULT_COUNT;
00113     }
00114 
00115     Measure(statPRStat, "time to call PR_GetFileInfo()");
00116     Measure(statStat, "time to call stat()");
00117 
00118     PR_Cleanup();
00119 }