gecko-dev/xpcom/tests/TestThreads.cpp

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4.5 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsIThread.h"
#include "nsIThreadPool.h"
#include "nsIRunnable.h"
#include <stdio.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 %x\n", mNum, 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) {
NS_INIT_REFCNT();
}
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;
}
nsresult
TestThreadPools(PRUint32 poolMinSize, PRUint32 poolMaxSize,
PRUint32 nRequests, PRIntervalTime dispatchWaitInterval = 0)
{
nsCOMPtr<nsIThreadPool> pool;
nsresult rv = NS_NewThreadPool(getter_AddRefs(pool), poolMinSize, poolMaxSize);
if (NS_FAILED(rv)) {
printf("failed to create thead pool\n");
return rv;
}
for (PRUint32 i = 0; i < nRequests; i++) {
rv = pool->DispatchRequest(new nsRunner(i+2));
if (dispatchWaitInterval && i % poolMaxSize == poolMaxSize - 1) {
PR_Sleep(dispatchWaitInterval);
}
}
rv = pool->Shutdown();
return rv;
}
int
main()
{
nsresult rv;
rv = NS_InitXPCOM(nsnull, nsnull);
if (NS_FAILED(rv)) return -1;
rv = TestThreads();
if (NS_FAILED(rv)) return -1;
rv = TestThreadPools(1, 4, 100);
if (NS_FAILED(rv)) return -1;
rv = TestThreadPools(4, 16, 100);
if (NS_FAILED(rv)) return -1;
// this test delays between each request to give threads a chance to
// decide to go away:
rv = TestThreadPools(4, 8, 32, PR_MillisecondsToInterval(1000));
if (NS_FAILED(rv)) return -1;
rv = NS_ShutdownXPCOM(nsnull);
if (NS_FAILED(rv)) return -1;
return 0;
}