From: Eric Wong <normalperson@...>
Date: 2012-04-29T17:02:07+09:00
Subject: Re: What is the meaning of rb_thread_interrupted() ?

I単aki Baz Castillo <ibc@aliax.net> wrote:
> Hi, I'm coding a Ruby C extension and would like to know the meaning
> of  rb_thread_interrupted() function defined in thread.c, whose
> content is:

The best way to know the meaning of a function is often to see how it's
used in existing code.

> And RUBY_VM_INTERRUPTED(th) is defined as:
> 
> #define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & 0x02)
> 
> So, when does rb_thread_interrupted() return 1 or 0?

See when Ruby sets the 0x02 bit on th->interrupt_flag and work backwards
from there.

For navigating/learning codebases, I always use (exuberant-)ctags,
(git) grep, and sometimes cflow.

(I could answer your questions directly, but I'd rather teach you how to
be a better fisherman (or source diver :)).