Hi Mark,<div><br></div><div>You may use conditional variables in threads. Perform the calculation in each thread, acquire lock and then wait for conditional variable to be notified from the main thread. The above steps should be put into some loop. I use this technique in my analysis:</div>
<div><br></div><div>loop example: <a href="http://goo.gl/mi6rr">http://goo.gl/mi6rr</a></div><div>conditional variable use: <a href="http://goo.gl/8BVKv">http://goo.gl/8BVKv</a></div><div>my condition class: <a href="http://goo.gl/sVS7y">http://goo.gl/sVS7y</a> [separate repository]</div>
<div><br></div><div>Good Luck, Samvel</div><div><br><div class="gmail_quote">On Thu, Sep 15, 2011 at 11:50 PM, Mark Higgins <span dir="ltr">&lt;<a href="mailto:miggins@gmail.com">miggins@gmail.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">I&#39;m new to threads and boost, so I&#39;m sure this is a real newbie question and hopefully quite easy to answer!<br>

<br>
I&#39;m trying to set up a pool of threads that do a calculation, and I want to wait for those calculations to finish. Normally I&#39;d do thread_group.join_all() to wait for the threads to exit - but in this case I want my threads hanging around so that I can redo that calculation over and over again when I ask it to do.<br>

<br>
What&#39;s the best way to signal back to the main thread that all calculations are complete? Should I use a barrier?<br>
<br>
<br>
<br>
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</blockquote></div><br></div>