semaphoretest.cpp

来自「C++ class libraries for network-centric,」· C++ 代码 · 共 168 行

//
// SemaphoreTest.cpp
//
// $Id: //poco/1.2/Foundation/testsuite/src/SemaphoreTest.cpp#1 $
//
// 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
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//


#include "SemaphoreTest.h"
#include "CppUnit/TestCaller.h"
#include "CppUnit/TestSuite.h"
#include "Poco/Thread.h"
#include "Poco/Runnable.h"
#include "Poco/Semaphore.h"
#include "Poco/Exception.h"


using Poco::Thread;
using Poco::Runnable;
using Poco::Semaphore;
using Poco::TimeoutException;


class SemaRunnable: public Runnable
{
public:
	SemaRunnable(int n, int max): _ran(false), _sema(n, max)
	{
	}
	
	void run()
	{
		_sema.wait();
		_ran = true;
	}
	
	bool ran() const
	{
		return _ran;
	}
	
	void set()
	{
		_sema.set();
	}
	
	void wait()
	{
		_sema.wait();
	}
	
	void wait(long milliseconds)
	{
		_sema.wait(milliseconds);
	}

	bool tryWait(long milliseconds)
	{
		return _sema.tryWait(milliseconds);
	}
	
private:
	bool _ran;
	Semaphore _sema;
};


SemaphoreTest::SemaphoreTest(const std::string& name): CppUnit::TestCase(name)
{
}


SemaphoreTest::~SemaphoreTest()
{
}


void SemaphoreTest::testInitZero()
{
	SemaRunnable r(0, 3);
	assert (!r.tryWait(10));
	r.set();
	r.wait();
	try
	{
		r.wait(100);
		failmsg("must timeout");
	}
	catch (TimeoutException&)
	{
	}
	catch (...)
	{
		failmsg("wrong exception");
	}
	r.set();
	r.set();
	assert (r.tryWait(0));
	r.wait();
	assert (!r.tryWait(10));
	
	Thread t;
	t.start(r);
	Thread::sleep(100);
	assert (!r.ran());
	r.set();
	t.join();
	assert (r.ran());
	assert (!r.tryWait(10));
}


void SemaphoreTest::testInitNonZero()
{
	SemaRunnable r(2, 2);
	r.wait();
	assert (r.tryWait(10));
	assert (!r.tryWait(10));
	r.set();
	assert (r.tryWait(10));
	assert (!r.tryWait(10));
}


void SemaphoreTest::setUp()
{
}


void SemaphoreTest::tearDown()
{
}


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

	CppUnit_addTest(pSuite, SemaphoreTest, testInitZero);
	CppUnit_addTest(pSuite, SemaphoreTest, testInitNonZero);

	return pSuite;
}