The Tor Browser: nsprpub/pr/tests/stat.c@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     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/. */

     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"

    15 #include <stdio.h>

    16 #include <stdlib.h>

    17 #include <string.h>

    19 #ifdef XP_OS2

    20 #include <io.h>

    21 #include <sys/types.h>

    22 #include <sys/stat.h>

    23 #endif

    25 #define DEFAULT_COUNT 100000

    26 PRInt32 count;

    28 #ifndef XP_PC

    29 char *filename = "/etc/passwd";

    30 #else

    31 char *filename = "..\\stat.c";

    32 #endif

    34 static void statPRStat(void)

    35 {

    36     PRFileInfo finfo;

    37     PRInt32 index = count;

    39     for (;index--;) {

    40          PR_GetFileInfo(filename, &finfo);

    41     }

    42 }

    44 static void statStat(void)

    45 {

    46     struct stat finfo;

    47     PRInt32 index = count;

    49     for (;index--;) {

    50         stat(filename, &finfo);

    51     }

    52 }

    54 /************************************************************************/

    56 static void Measure(void (*func)(void), const char *msg)

    57 {

    58     PRIntervalTime start, stop;

    59     double d;

    60     PRInt32 tot;

    62     start = PR_IntervalNow();

    63     (*func)();

    64     stop = PR_IntervalNow();

    66     d = (double)PR_IntervalToMicroseconds(stop - start);

    67     tot = PR_IntervalToMilliseconds(stop-start);

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

    70 }

    72 int main(int argc, char **argv)

    73 {

    74     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);

    75     PR_STDIO_INIT();

    77     if (argc > 1) {

    78 	count = atoi(argv[1]);

    79     } else {

    80 	count = DEFAULT_COUNT;

    81     }

    83     Measure(statPRStat, "time to call PR_GetFileInfo()");

    84     Measure(statStat, "time to call stat()");

    86     PR_Cleanup();

    87 }

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