nsprpub/pr/tests/stat.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 /*
   7  * Program to test different ways to get file info; right now it
   8  * only works for solaris and OS/2.
   9  *
  10  */
  11 #include "nspr.h"
  12 #include "prpriv.h"
  13 #include "prinrval.h"
  14
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18
  19 #ifdef XP_OS2
  20 #include <io.h>
  21 #include <sys/types.h>
  22 #include <sys/stat.h>
  23 #endif
  24
  25 #define DEFAULT_COUNT 100000
  26 PRInt32 count;
  27
  28 #ifndef XP_PC
  29 char *filename = "/etc/passwd";
  30 #else
  31 char *filename = "..\\stat.c";
  32 #endif
  33
  34 static void statPRStat(void)
  35 {
  36     PRFileInfo finfo;
  37     PRInt32 index = count;
  38
  39     for (;index--;) {
  40          PR_GetFileInfo(filename, &finfo);
  41     }
  42 }
  43
  44 static void statStat(void)
  45 {
  46     struct stat finfo;
  47     PRInt32 index = count;
  48
  49     for (;index--;) {
  50         stat(filename, &finfo);
  51     }
  52 }
  53
  54 /************************************************************************/
  55
  56 static void Measure(void (*func)(void), const char *msg)
  57 {
  58     PRIntervalTime start, stop;
  59     double d;
  60     PRInt32 tot;
  61
  62     start = PR_IntervalNow();
  63     (*func)();
  64     stop = PR_IntervalNow();
  65
  66     d = (double)PR_IntervalToMicroseconds(stop - start);
  67     tot = PR_IntervalToMilliseconds(stop-start);
  68
  69     printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
  70 }
  71
  72 int main(int argc, char **argv)
  73 {
  74     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
  75     PR_STDIO_INIT();
  76
  77     if (argc > 1) {
  78         count = atoi(argv[1]);
  79     } else {
  80         count = DEFAULT_COUNT;
  81     }
  82
  83     Measure(statPRStat, "time to call PR_GetFileInfo()");
  84     Measure(statStat, "time to call stat()");
  85
  86     PR_Cleanup();
  87 }