//
// Copyright (c) ZeroC, Inc. All rights reserved.
//

#include <IceUtil/IceUtil.h>
#include <AliveTest.h>
#include <TestHelper.h>

using namespace std;
using namespace IceUtil;

static const string createTestName("thread alive");

class CondVar : public IceUtil::Monitor<IceUtil::RecMutex>
{
public:

    CondVar() :
        _done(false)
    {
    }

    void waitForSignal()
    {
        IceUtil::Monitor<IceUtil::RecMutex>::Lock lock(*this);
        while(!_done)
        {
            wait();
        }
    }

    void signal()
    {
        IceUtil::Monitor<IceUtil::RecMutex>::Lock lock(*this);
        _done = true;
        notify();
    }

private:

    bool _done;
};

class AliveTestThread : public Thread
{
public:

    AliveTestThread(CondVar& childCreated, CondVar& parentReady) :
        _childCreated(childCreated), _parentReady(parentReady)
    {
    }

    virtual void run()
    {
        try
        {
           _childCreated.signal();
           _parentReady.waitForSignal();
        }
        catch(const IceUtil::ThreadLockedException&)
        {
        }
    }

private:

    CondVar& _childCreated;
    CondVar& _parentReady;
};

typedef Handle<AliveTestThread> AliveTestThreadPtr;

AliveTest::AliveTest() :
    TestBase(createTestName)
{
}

void
AliveTest::run()
{
    //
    // Check that calling isAlive() returns the correct result for alive and
    // and dead threads.
    //
    CondVar childCreated;
    CondVar parentReady;
    AliveTestThreadPtr t = new AliveTestThread(childCreated, parentReady);
    IceUtil::ThreadControl c = t->start();
    childCreated.waitForSignal();
    test(t->isAlive());
    parentReady.signal();
    c.join();
    test(!t->isAlive());
}
