From: Chad Brewbaker <crb002@...>
Date: 2007-12-12T09:16:36+09:00
Subject: Re: Problems building ruby1.9 on Blue Gene/L

Question. Looking into thread.c:

> YARV Thread Desgin
>
> model 1: Userlevel Thread
>    Same as traditional ruby thread.
> model 2: Native Thread with Giant VM lock
    Using pthread (or Windows thread) and Ruby threads run > concurrent.


And looking into vm_core.h:

>#define RUBY_VM_THREAD_MODEL 2
...
>#if   defined(_WIN32)
>#include "thread_win32.h"
>#elif defined(HAVE_PTHREAD_H)
>#include "thread_pthread.h"
>#else
>#error "unsupported thread type"
>#endif
...
>#if RUBY_VM_THREAD_MODEL == 2
>#else
>#error "unsupported thread model"
>#endif

So model 1 threads are not supported in Ruby1.9?
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