[Qt-interest] Problems with threads and explicitely shared data

[Arnold Krille]

On Friday 02 October 2009 01:09:11 Stephen Jackson wrote:
> I built your project and it crashes for me. I ran it under valgrind
> and the first problem this threw up was this. In
> ChainMemberThread::run() you have
>         NSCore::AcqisitionDataSet data = _queue.first();
> This breaks when _queue is empty. When protected by
>         if (!_queue.isEmpty())
> it no longer crashes and valgrind reports no problems.

You are right!

I thought using a semaphore in the outer class when adding and removing from 
the queue was enough, but apparently not.

Thanks,

Arnold

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