From: MenTaLguY <mental@...>
Date: 2009-07-26T09:01:17+09:00
Subject: Re: C extension and Ruby threads

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On Sun, 2009-07-26 at 07:18 +0900, John Bob wrote:
>  - I created a ruby class Client that inherits from BaseClient. In the
> constructor of this class, I create a thread that loops on the method
> receive(). Note that in my C code, the receive function does a
> WaitForSingleObject (Windows equivalent of pthread_cond_wait ) with a
> timeout of 100ms

In 1.8, there's not really a good way to address this unless you can
convert the object you're waiting on to a file descriptor suitable to
wait on with rb_thread_select().

In 1.9, there is additionally an API function --
rb_thread_blocking_region -- which you can use to wrap a function which
needs to block (provided that the function doesn't touch the Ruby
interpreter or Ruby objects in any way); rb_thread_blocking_region
permits other threads to continue while the function you pass to it
blocks.

Either approach should also permit you to simply block without polling
with a timeout as you do now.

-mental

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