DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

/*
 * File:        priotest.c
 * Purpose:     testing priorities
 */

#ifdef XP_MAC
#error "This test does not run on Macintosh"
#else


#include "prcmon.h"
#include "prinit.h"
#include "prinrval.h"
#include "prlock.h"
#include "prlog.h"
#include "prmon.h"
#include "prprf.h"
#include "prthread.h"
#include "prtypes.h"

#include "plerror.h"
#include "plgetopt.h"

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

#define DEFAULT_DURATION 5

static PRBool failed = PR_FALSE;
static PRIntervalTime oneSecond;
static PRFileDesc *debug_out = NULL;
static PRBool debug_mode = PR_FALSE;

static PRUint32 PerSecond(PRIntervalTime timein)
{
    PRUint32 loop = 0;
    while (((PRIntervalTime)(PR_IntervalNow()) - timein) < oneSecond)
        loop += 1;
    return loop;
}  /* PerSecond */

static void PR_CALLBACK Low(void *arg)
{
    PRUint32 t3 = 0, t2 = 0, t1 = 0, t0, *tn = (PRUint32*)arg;
    while (1)
    {
        t0 = PerSecond(PR_IntervalNow());
        *tn = (t3 + 3 * t2 + 3 * t1 + t0) / 8;
        t3 = t2; t2 = t1; t1 = t0;
    }
}  /* Low */

static void PR_CALLBACK High(void *arg)
{
    PRUint32 t3 = 0, t2 = 0, t1 = 0, t0, *tn = (PRUint32*)arg;
    while (1)
    {
        PRIntervalTime timein = PR_IntervalNow();
        PR_Sleep(oneSecond >> 2);  /* 0.25 seconds */
        t0 = PerSecond(timein);
        *tn = (t3 + 3 * t2 + 3 * t1 + t0) / 8;
        t3 = t2; t2 = t1; t1 = t0;
    }
}  /* High */

static void Help(void)
{
    PR_fprintf(
		debug_out, "Usage: priotest [-d] [-c n]\n");
    PR_fprintf(
		debug_out, "-c n\tduration of test in seconds (default: %d)\n", DEFAULT_DURATION);
    PR_fprintf(
        debug_out, "-d\tturn on debugging output (default: FALSE)\n");
}  /* Help */

static void RudimentaryTests(void)
{
    /*
    ** Try some rudimentary tests like setting valid priority and
    ** getting it back, or setting invalid priorities and getting
    ** back a valid answer.
    */
    PRThreadPriority priority;
    PR_SetThreadPriority(PR_GetCurrentThread(), PR_PRIORITY_URGENT);
    priority = PR_GetThreadPriority(PR_GetCurrentThread());
    failed = ((PR_TRUE == failed) || (PR_PRIORITY_URGENT != priority))
        ? PR_TRUE : PR_FALSE;
    if (debug_mode && (PR_PRIORITY_URGENT != priority))
    {
        PR_fprintf(debug_out, "PR_[S/G]etThreadPriority() failed\n");
    }


    PR_SetThreadPriority(
        PR_GetCurrentThread(), (PRThreadPriority)(PR_PRIORITY_FIRST - 1));
    priority = PR_GetThreadPriority(PR_GetCurrentThread());
    failed = ((PR_TRUE == failed) || (PR_PRIORITY_FIRST != priority))
        ? PR_TRUE : PR_FALSE;
    if (debug_mode && (PR_PRIORITY_FIRST != priority))
    {
        PR_fprintf(debug_out, "PR_SetThreadPriority(-1) failed\n");
    }

    PR_SetThreadPriority(
        PR_GetCurrentThread(), (PRThreadPriority)(PR_PRIORITY_LAST + 1));
    priority = PR_GetThreadPriority(PR_GetCurrentThread());
    failed = ((PR_TRUE == failed) || (PR_PRIORITY_LAST != priority))
        ? PR_TRUE : PR_FALSE;
    if (debug_mode && (PR_PRIORITY_LAST != priority))
    {
        PR_fprintf(debug_out, "PR_SetThreadPriority(+1) failed\n");
    }

}  /* RudimentataryTests */

static void CreateThreads(PRUint32 *lowCount, PRUint32 *highCount)
{
    (void)PR_CreateThread(
        PR_USER_THREAD, Low, lowCount, PR_PRIORITY_LOW,
        PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
    (void)PR_CreateThread(
        PR_USER_THREAD, High, highCount, PR_PRIORITY_HIGH,
        PR_LOCAL_THREAD, PR_JOINABLE_THREAD, 0);
} /* CreateThreads */

PRIntn main(PRIntn argc, char **argv)
{
    PLOptStatus os;
    PRIntn duration = DEFAULT_DURATION;
    PRUint32 totalCount, highCount = 0, lowCount = 0;
	PLOptState *opt = PL_CreateOptState(argc, argv, "hdc:");

    debug_out = PR_STDOUT;
    oneSecond = PR_SecondsToInterval(1);

	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
    {
		if (PL_OPT_BAD == os) continue;
        switch (opt->option)
        {
        case 'd':  /* debug mode */
			debug_mode = PR_TRUE;
            break;
        case 'c':  /* test duration */
			duration = atoi(opt->value);
            break;
        case 'h':  /* help message */
         default:
			Help();
			return 2;
        }
    }
	PL_DestroyOptState(opt);
    PR_STDIO_INIT();

    if (duration == 0) duration = DEFAULT_DURATION;

    RudimentaryTests();

    printf("Priority test: running for %d seconds\n\n", duration);

    (void)PerSecond(PR_IntervalNow());
    totalCount = PerSecond(PR_IntervalNow());

    PR_SetThreadPriority(PR_GetCurrentThread(), PR_PRIORITY_URGENT);

    if (debug_mode)
    {
        PR_fprintf(debug_out,
		    "The high priority thread should get approximately three\n");
        PR_fprintf( debug_out,
		    "times what the low priority thread manages. A maximum of \n");
        PR_fprintf( debug_out, "%d cycles are available.\n\n", totalCount);
    }

    duration = (duration + 4) / 5;
    CreateThreads(&lowCount, &highCount);
    while (duration--)
    {
        PRIntn loop = 5;
        while (loop--) PR_Sleep(oneSecond);
        if (debug_mode)
            PR_fprintf(debug_out, "high : low :: %d : %d\n", highCount, lowCount);
    }


    PR_ProcessExit((failed) ? 1 : 0);

	PR_ASSERT(!"You can't get here -- but you did!");
	return 1;  /* or here */

}  /* main */

#endif  /* ifdef XP_MAC */

/* priotest.c */