threadpooltest.cpp

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//
// ThreadPoolTest.cpp
//
// $Id: //poco/Main/Foundation/testsuite/src/ThreadPoolTest.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include "ThreadPoolTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Foundation/ThreadPool.h"
#include "Foundation/RunnableAdapter.h"
#include "Foundation/Exception.h"
#include "Foundation/Thread.h"


using Foundation::ThreadPool;
using Foundation::RunnableAdapter;
using Foundation::Thread;


ThreadPoolTest::ThreadPoolTest(const std::string& name): CppUnit::TestCase(name), _event(false)
{
}


ThreadPoolTest::~ThreadPoolTest()
{
}


void ThreadPoolTest::testThreadPool()
{
	ThreadPool pool(2, 3, 3);
	
	assert (pool.allocated() == 2);
	assert (pool.used() == 0);
	assert (pool.capacity() == 3);
	assert (pool.available() == 3);
	pool.addCapacity(1);
	assert (pool.allocated() == 2);
	assert (pool.used() == 0);
	assert (pool.capacity() == 4);
	assert (pool.available() == 4);

	RunnableAdapter<ThreadPoolTest> ra(*this, &ThreadPoolTest::count);
	pool.start(ra);
	assert (pool.allocated() == 2);
	assert (pool.used() == 1);
	assert (pool.capacity() == 4);
	assert (pool.available() == 3);

	pool.start(ra);
	assert (pool.allocated() == 2);
	assert (pool.used() == 2);
	assert (pool.capacity() == 4);
	assert (pool.available() == 2);

	pool.start(ra);
	assert (pool.allocated() == 3);
	assert (pool.used() == 3);
	assert (pool.capacity() == 4);
	assert (pool.available() == 1);

	pool.start(ra);
	assert (pool.allocated() == 4);
	assert (pool.used() == 4);
	assert (pool.capacity() == 4);
	assert (pool.available() == 0);

	try
	{
		pool.start(ra);
		failmsg("thread pool exhausted - must throw exception");
	}	
	catch (Foundation::NoThreadAvailableException&)
	{
	}
	catch (...)
	{
		failmsg("wrong exception thrown");
	}
	
	_event.set(); // go!!!
	pool.joinAll();
	
	assert (_count == 40000);
	
	assert (pool.allocated() == 4);
	assert (pool.used() == 0);
	assert (pool.capacity() == 4);
	assert (pool.available() == 4);
	
	Thread::sleep(4000);

	pool.collect();
	assert (pool.allocated() == 2);
	assert (pool.used() == 0);
	assert (pool.capacity() == 4);
	assert (pool.available() == 4);
	
	_count = 0;
	_event.reset();
	pool.start(ra);
	assert (pool.allocated() == 2);
	assert (pool.used() == 1);
	assert (pool.capacity() == 4);
	assert (pool.available() == 3);

	pool.start(ra);
	assert (pool.allocated() == 2);
	assert (pool.used() == 2);
	assert (pool.capacity() == 4);
	assert (pool.available() == 2);
	_event.set(); // go!!!
	pool.joinAll();

	assert (_count == 20000);
	
	assert (pool.allocated() == 2);
	assert (pool.used() == 0);
	assert (pool.capacity() == 4);
	assert (pool.available() == 4);
}


void ThreadPoolTest::setUp()
{
	_event.reset();
	_count = 0;
}


void ThreadPoolTest::tearDown()
{
}


void ThreadPoolTest::count()
{
	_event.wait();
	for (int i = 0; i < 10000; ++i)
	{
		_mutex.lock();
		++_count;
		_mutex.unlock();
	}
}


CppUnit::Test* ThreadPoolTest::suite()
{
	CppUnit::TestSuite* pSuite = new CppUnit::TestSuite("ThreadPoolTest");

	CppUnit_addTest(pSuite, ThreadPoolTest, testThreadPool);

	return pSuite;
}