You're right about synchronized<> as far as containers are concerned. Here's Ted Yuan's ProducerConsumer code from CUJ Jan '04 which does explicitly lock around these cases (ex: in offer and poll calls for a channel (a template wrapper for a container type)). On Feb 13, 2004, at 2:23 AM, Vladimir Prus wrote:
John Fuller wrote:
both Ted Yuan's producer-consumer templates (cujjan2004) and the synchronized template at http://libcalc.sourceforge.net/synchronized.hpp are nice thread-safe container implementations...
I could not find the first reference. Looking at the second, it seems to implement the same idea as Raoul Gough's presented. And of course, I'll ask the same question: if I have code like
if (!proxy->empty()) { int value = proxy->front(); //.... }
what prevents other thread from extracting all elements between the two calls?
- Volodya
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