Cross thread signals (QueuedConnection). Miss SOME signals!

[progDes]

Hi all.

I have weired problem with signals sending between threads.

1) I have a thread. In the run() function I create a signals reciever object and connect signals to it:

void LogServiceThread::run()
{
    // Create worker.
    try
    {
        m_impl->m_worker.reset(new LogWorker(m_impl->m_fileName));
    }
    catch (...)
    {
        // Ignore all exceptions. If something gone wrong with worker - continue work silently.
    }
    // Connect signals to worker.
    if (!m_impl->m_worker.isNull())
    {
        connect(this, SIGNAL(writeAsynchSignal(QString)), m_impl->m_worker.data(), SLOT(writeMessage(QString)), Qt::QueuedConnection);
    }
    // Run event loop.
    exec();
}

void LogServiceThread::run()
{
    // Create worker.
    try
    {
        m_impl->m_worker.reset(new LogWorker(m_impl->m_fileName));
    }
    catch (...)
    {
        // Ignore all exceptions. If something gone wrong with worker - continue work silently.
    }
    // Connect signals to worker.
    if (!m_impl->m_worker.isNull())
    {
        connect(this, SIGNAL(writeAsynchSignal(QString)), m_impl->m_worker.data(), SLOT(writeMessage(QString)), Qt::QueuedConnection);
    }
    // Run event loop.
    exec();
}

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2) Now I try to send som signals to it by main thread

void LogServiceThread::writeAsynch(const QString & string)
{
    emit writeAsynchSignal(string);
}

void LogServiceThread::writeAsynch(const QString & string)
{
    emit writeAsynchSignal(string);
}

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So basically, this is an asynchronous thread safe logger. And I got weired problem: sometimes SOME log messages are missing. Some signals are emited but never come to slot! Sometimes I got all messages during run, some times only few.

What I am missing?

Thanks.

[high_flyer]

What happens if you change the signature of writeAsynch() to:

void writeAsynch(QString string)

void writeAsynch(QString string)

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[MarekR22]

@up: this doesn't change anything.

@topic: not enough information! I have no idea what you should say more! First check debug logs, maybe Qt warns about some run time problems.
Secondly describe what you are trying to do? Maybe you can do it better way?