RetroZilla/xpcom/tests/TestThreads.cpp

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2015-10-21 05:03:22 +02:00
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIThread.h"
#include "nsIRunnable.h"
#include <stdio.h>
#include <stdlib.h>
#include "nspr.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
class nsRunner : public nsIRunnable {
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Run() {
nsCOMPtr<nsIThread> thread;
nsresult rv = nsIThread::GetCurrent(getter_AddRefs(thread));
if (NS_FAILED(rv)) {
printf("failed to get current thread\n");
return rv;
}
printf("running %d on thread %p\n", mNum, (void *)thread.get());
// if we don't do something slow, we'll never see the other
// worker threads run
PR_Sleep(PR_MillisecondsToInterval(100));
return rv;
}
nsRunner(int num) : mNum(num) {
}
protected:
int mNum;
};
NS_IMPL_THREADSAFE_ISUPPORTS1(nsRunner, nsIRunnable)
nsresult
TestThreads()
{
nsresult rv;
nsCOMPtr<nsIThread> runner;
rv = NS_NewThread(getter_AddRefs(runner), new nsRunner(0), 0, PR_JOINABLE_THREAD);
if (NS_FAILED(rv)) {
printf("failed to create thread\n");
return rv;
}
nsCOMPtr<nsIThread> thread;
rv = nsIThread::GetCurrent(getter_AddRefs(thread));
if (NS_FAILED(rv)) {
printf("failed to get current thread\n");
return rv;
}
PRThreadScope scope;
rv = runner->GetScope(&scope);
if (NS_FAILED(rv)) {
printf("runner already exited\n");
}
rv = runner->Join(); // wait for the runner to die before quitting
if (NS_FAILED(rv)) {
printf("join failed\n");
}
rv = runner->GetScope(&scope); // this should fail after Join
if (NS_SUCCEEDED(rv)) {
printf("get scope failed\n");
}
rv = runner->Interrupt(); // this should fail after Join
if (NS_SUCCEEDED(rv)) {
printf("interrupt failed\n");
}
////////////////////////////////////////////////////////////////////////////
// try an unjoinable thread
rv = NS_NewThread(getter_AddRefs(runner), new nsRunner(1));
if (NS_FAILED(rv)) {
printf("failed to create thread\n");
return rv;
}
rv = runner->Join(); // wait for the runner to die before quitting
if (NS_SUCCEEDED(rv)) {
printf("shouldn't have been able to join an unjoinable thread\n");
}
PR_Sleep(PR_MillisecondsToInterval(100)); // hopefully the runner will quit here
return NS_OK;
}
class nsStressRunner : public nsIRunnable {
public:
NS_DECL_ISUPPORTS
NS_IMETHOD Run() {
NS_ASSERTION(!mWasRun, "run twice!");
mWasRun = PR_TRUE;
PR_Sleep(1);
if (!PR_AtomicDecrement(&gNum)) {
printf(" last thread was %d\n", mNum);
}
return NS_OK;
}
nsStressRunner(int num) : mNum(num), mWasRun(PR_FALSE) {
PR_AtomicIncrement(&gNum);
}
static PRInt32 GetGlobalCount() {return gNum;}
private:
~nsStressRunner() {
NS_ASSERTION(mWasRun, "never run!");
}
protected:
static PRInt32 gNum;
PRInt32 mNum;
PRBool mWasRun;
};
PRInt32 nsStressRunner::gNum = 0;
NS_IMPL_THREADSAFE_ISUPPORTS1(nsStressRunner, nsIRunnable)
static int Stress(int loops, int threads)
{
for (int i = 0; i < loops; i++) {
printf("Loop %d of %d\n", i+1, loops);
int k;
nsIThread** array = new nsIThread*[threads];
NS_ASSERTION(array, "out of memory");
NS_ASSERTION(!nsStressRunner::GetGlobalCount(), "bad count of runnables");
for (k = 0; k < threads; k++) {
nsCOMPtr<nsIThread> t;
nsresult rv = NS_NewThread(getter_AddRefs(t),
new nsStressRunner(k),
0, PR_JOINABLE_THREAD);
NS_ASSERTION(NS_SUCCEEDED(rv), "can't create thread");
NS_ADDREF(array[k] = t);
}
for (k = threads-1; k >= 0; k--) {
array[k]->Join();
NS_RELEASE(array[k]);
}
delete [] array;
}
return 0;
}
PR_STATIC_CALLBACK(void) threadProc(void *arg)
{
// printf(" running thread %d\n", (int) arg);
PR_Sleep(1);
PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(PR_GetCurrentThread()));
}
static int StressNSPR(int loops, int threads)
{
for (int i = 0; i < loops; i++) {
printf("Loop %d of %d\n", i+1, loops);
int k;
PRThread** array = new PRThread*[threads];
PR_ASSERT(array);
for (k = 0; k < threads; k++) {
array[k] = PR_CreateThread(PR_USER_THREAD,
threadProc, (void*) k,
PR_PRIORITY_NORMAL,
PR_GLOBAL_THREAD,
PR_JOINABLE_THREAD,
0);
PR_ASSERT(array[k]);
}
for (k = 0; k < threads; k++) {
PR_ASSERT(PR_JOINABLE_THREAD == PR_GetThreadState(array[k]));
}
for (k = threads-1; k >= 0; k--) {
PR_JoinThread(array[k]);
}
delete [] array;
}
return 0;
}
int
main(int argc, char** argv)
{
int retval = 0;
nsresult rv;
rv = NS_InitXPCOM2(nsnull, nsnull, nsnull);
if (NS_FAILED(rv)) return -1;
if (argc > 1 && !strcmp(argv[1], "-stress")) {
int loops;
int threads;
if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
!(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
printf("To use -stress you must pass loop count and thread count...\n"
" TestThreads -stress -1000 -50\n");
} else {
printf("Running stress test with %d loops of %d threads each\n",
loops, threads);
retval = Stress(loops, threads);
}
} else if (argc > 1 && !strcmp(argv[1], "-stress-nspr")) {
int loops;
int threads;
if (argc != 4 || *argv[2] != '-' || *argv[3] != '-' ||
!(loops = atoi(argv[2]+1)) || !(threads = atoi(argv[3]+1))) {
printf("To use -stress-nspr you must pass loop count and thread count...\n"
" TestThreads -stress -1000 -50\n");
} else {
printf("Running stress test with %d loops of %d threads each\n",
loops, threads);
retval = StressNSPR(loops, threads);
}
} else {
rv = TestThreads();
if (NS_FAILED(rv)) return -1;
}
rv = NS_ShutdownXPCOM(nsnull);
if (NS_FAILED(rv)) return -1;
return retval;
}