There is nothing obviously wrong in the code you've posted.

I suspect that you are running out of memory by filling the input queue faster than it can be processed and the process doesn't actually stop, but rather stalls whilst it attempts to free up enough memory to increase the size of the input queue.

You will have to post the complete program, preferably cut down, but still demonstrating the problem.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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In reply to Re: Tread::Queue enqueue blocks all of my threads by BrowserUk
in thread Tread::Queue enqueue blocks all of my threads by sivert

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