xpcom/tests/TestThreads.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Pierre Phaneuf <pp@ludusdesign.com>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
  27  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "nsThreadUtils.h"
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include "nspr.h"
  43 #include "nsCOMPtr.h"
  44 #include "nsIServiceManager.h"
  45 #include "nsXPCOM.h"
  46
  47 class nsRunner : public nsIRunnable {
  48 public:
  49     NS_DECL_ISUPPORTS
  50
  51     NS_IMETHOD Run() {
  52         nsCOMPtr<nsIThread> thread;
  53         nsresult rv = NS_GetCurrentThread(getter_AddRefs(thread));
  54         if (NS_FAILED(rv)) {
  55             printf("failed to get current thread\n");
  56             return rv;
  57         }
  58         printf("running %d on thread %p\n", mNum, (void *)thread.get());
  59
  60         // if we don't do something slow, we'll never see the other
  61         // worker threads run
  62         PR_Sleep(PR_MillisecondsToInterval(100));
  63
  64         return rv;
  65     }
  66
  67     nsRunner(int num) : mNum(num) {
  68     }
  69
  70 protected:
  71     int mNum;
  72 };
  73
  74 NS_IMPL_THREADSAFE_ISUPPORTS1(nsRunner, nsIRunnable)
  75
  76 nsresult
  77 TestThreads()
  78 {
  79     nsresult rv;
  80
  81     nsCOMPtr<nsIRunnable> event = new nsRunner(0);
  82     if (!event)
  83         return NS_ERROR_OUT_OF_MEMORY;
  84
  85     nsCOMPtr<nsIThread> runner;
  86     rv = NS_NewThread(getter_AddRefs(runner), event);
  87     if (NS_FAILED(rv)) {
  88         printf("failed to create thread\n");
  89         return rv;
  90     }
  91
  92     nsCOMPtr<nsIThread> thread;
  93     rv = NS_GetCurrentThread(getter_AddRefs(thread));
  94     if (NS_FAILED(rv)) {
  95         printf("failed to get current thread\n");
  96         return rv;
  97     }
  98
  99     rv = runner->Shutdown();     // wait for the runner to die before quitting
 100     if (NS_FAILED(rv)) {
 101         printf("join failed\n");
 102     }
 103
 104     PR_Sleep(PR_MillisecondsToInterval(100));       // hopefully the runner will quit here
 105
 106     return NS_OK;
 107 }
 108
 109 class nsStressRunner : public nsIRunnable {
 110 public:
 111     NS_DECL_ISUPPORTS
 112
 113     NS_IMETHOD Run() {
 114         NS_ASSERTION(!mWasRun, "run twice!");
 115         mWasRun = PR_TRUE;
 116         PR_Sleep(1);
 117         if (!PR_AtomicDecrement(&gNum)) {
 118             printf("   last thread was %d\n", mNum);
 119         }
 120         return NS_OK;
 121     }
 122
 123     nsStressRunner(int num) : mNum(num), mWasRun(PR_FALSE) {
 124         PR_AtomicIncrement(&gNum);
 125     }
 126
 127     static PRInt32 GetGlobalCount() {return gNum;}
 128
 129 private:
 130     ~nsStressRunner() {
 131         NS_ASSERTION(mWasRun, "never run!");
 132     }
 133
 134 protected:
 135     static PRInt32 gNum;
 136     PRInt32 mNum;
 137     PRBool mWasRun;
 138 };
 139
 140 PRInt32 nsStressRunner::gNum = 0;
 141
 142 NS_IMPL_THREADSAFE_ISUPPORTS1(nsStressRunner, nsIRunnable)
 143
 144 static int Stress(int loops, int threads)
 145 {
 146
 147     for (int i = 0; i < loops; i++) {
 148         printf("Loop %d of %d\n", i+1, loops);
 149
 150         int k;
 151         nsIThread** array = new nsIThread*[threads];
 152         NS_ASSERTION(array, "out of memory");
 153
 154         NS_ASSERTION(!nsStressRunner::GetGlobalCount(), "bad count of runnables");
 155
 156         for (k = 0; k < threads; k++) {
 157             nsCOMPtr<nsIThread> t;
 158             nsresult rv = NS_NewThread(getter_AddRefs(t), new nsStressRunner(k));
 159             if (NS_FAILED(rv)) {
 160                 NS_ERROR("can't create thread");
 161                 return -1;
 162             }
 163             NS_ADDREF(array[k] = t);
 164         }
 165
 166         for (k = threads-1; k >= 0; k--) {
 167             array[k]->Shutdown();
 168             NS_RELEASE(array[k]);
 169         }
 170         delete [] array;
 171     }
 172     return 0;
 173 }
 174
 175 static void threadProc(void *arg)
 176 {
 177     // printf("   running thread %d\n", (int) arg);
 178     PR_Sleep(1);
 179     PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(PR_GetCurrentThread()));
 180 }
 181
 182 static int StressNSPR(int loops, int threads)
 183 {
 184
 185     for (int i = 0; i < loops; i++) {
 186         printf("Loop %d of %d\n", i+1, loops);
 187
 188         int k;
 189         PRThread** array = new PRThread*[threads];
 190         PR_ASSERT(array);
 191
 192         for (k = 0; k < threads; k++) {
 193             array[k] = PR_CreateThread(PR_USER_THREAD,
 194                                        threadProc, (void*) k,
 195                                        PR_PRIORITY_NORMAL,
 196                                        PR_GLOBAL_THREAD,
 197                                        PR_JOINABLE_THREAD,
 198                                        0);
 199             PR_ASSERT(array[k]);
 200         }
 201
 202         for (k = 0; k < threads; k++) {
 203             PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(array[k]));
 204         }
 205
 206         for (k = threads-1; k >= 0; k--) {
 207             PR_JoinThread(array[k]);
 208         }
 209         delete [] array;
 210     }
 211     return 0;
 212 }
 213
 214
 215 int
 216 main(int argc, char** argv)
 217 {
 218     int retval = 0;
 219     nsresult rv;
 220
 221     rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
 222     if (NS_FAILED(rv)) return -1;
 223
 224     if (argc > 1 && !strcmp(argv[1], "-stress")) {
 225         int loops;
 226         int threads;
 227         if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
 228             !(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
 229            printf("To use -stress you must pass loop count and thread count...\n"
 230                   "   TestThreads -stress -1000 -50\n");
 231         } else {
 232            printf("Running stress test with %d loops of %d threads each\n",
 233                   loops, threads);
 234            retval = Stress(loops, threads);
 235         }
 236     } else if (argc > 1 && !strcmp(argv[1], "-stress-nspr")) {
 237         int loops;
 238         int threads;
 239         if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
 240             !(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
 241            printf("To use -stress-nspr you must pass loop count and thread count...\n"
 242                   "   TestThreads -stress -1000 -50\n");
 243         } else {
 244            printf("Running stress test with %d loops of %d threads each\n",
 245                   loops, threads);
 246            retval = StressNSPR(loops, threads);
 247         }
 248     } else {
 249         rv = TestThreads();
 250         if (NS_FAILED(rv)) return -1;
 251     }
 252
 253     rv = NS_ShutdownXPCOM(nsnull);
 254     if (NS_FAILED(rv)) return -1;
 255     return retval;
 256 }