21 messages in org.ruby-lang.ruby-talkRe: C Threads and Ruby
FromSent OnAttachments
Kroeger, Simon (ext)Jun 20, 2006 3:27 am 
Patrick HurleyJun 20, 2006 4:28 am 
Kroeger, Simon (ext)Jun 20, 2006 4:59 am 
Francis CianfroccaJun 20, 2006 5:13 am 
Patrick HurleyJun 20, 2006 9:39 am 
Paul BrannanJun 20, 2006 11:33 am 
Patrick HurleyJun 20, 2006 1:16 pm 
Francis CianfroccaJun 20, 2006 1:17 pm 
Francis CianfroccaJun 20, 2006 1:19 pm 
Simon KrögerJun 20, 2006 2:29 pm 
Joel VanderWerfJun 20, 2006 2:35 pm 
Francis CianfroccaJun 20, 2006 2:39 pm 
Bill KellyJun 20, 2006 2:42 pm 
Simon KrögerJun 20, 2006 2:49 pm 
Francis CianfroccaJun 20, 2006 3:26 pm 
Francis CianfroccaJun 20, 2006 3:34 pm 
Bill KellyJun 20, 2006 4:08 pm 
Francis CianfroccaJun 20, 2006 5:07 pm 
Kroeger, Simon (ext)Jun 21, 2006 2:53 am 
Francis CianfroccaJun 21, 2006 3:15 am 
Paul BrannanJun 22, 2006 8:21 am 
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Subject:Re: C Threads and RubyActions...
From:Patrick Hurley (phur@gmail.com)
Date:Jun 20, 2006 1:16:52 pm
List:org.ruby-lang.ruby-talk

On 6/20/06, Paul Brannan <pbra@atdesk.com> wrote:

On Wed, Jun 21, 2006 at 01:39:53AM +0900, Patrick Hurley wrote:

That is not true, it is completely possible to use an OS level mutex/critical section etc, from inside a "green" Ruby thread. It will block all Ruby threads which is not very nice, but I do not know of a better solution.

TRAP_BEG and TRAP_END work well for allowing Ruby to switch threads, though the call between them must be interruptible. I believe this should be true of sem_wait(), though I've been unsuccessful interrupting it on linux.

I typically use a pipe for this kind of synchronization.

Paul

I would agree a pipe is generally better; however, in my case it was against a Win32 API that required the use of threads. Now I am curious about TRAP_BEG/TRAP_END. Is it safe to access rb_XXX methods from inside a TRAP_BEG/TRAP_END block not in the ruby interpreter thread? If so that would make some things much easier.

Thanks pth