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ThreadPoolTest.cpp

//
// ThreadPoolTest.cpp
//
// $Id: //poco/1.2/Foundation/testsuite/src/ThreadPoolTest.cpp#2 $
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// DEALINGS IN THE SOFTWARE.
//


#include "ThreadPoolTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Poco/ThreadPool.h"
#include "Poco/RunnableAdapter.h"
#include "Poco/Exception.h"
#include "Poco/Thread.h"


using Poco::ThreadPool;
using Poco::RunnableAdapter;
using Poco::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 (Poco::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;
}

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