From: Joel Pearson <lists@...>
Date: 2013-03-18T18:22:41+09:00
Subject: Re: forked child processes

As far as I know you'd have to set up a counter within the parent and 
increment / decrement it within the threads.

However, before moving into multiple threads you should do a bit of 
benchmarking to ensure that it's the best way to proceed. You'll often 
find that multithreading isn't your best option as the performance 
bottleneck may be something that threads won't help with.

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