From: SASADA Koichi <ko1@...>
Date: 2009-06-09T09:33:39+09:00
Subject: [ruby-core:23764] Re: [Bug #977] caller for all threads patch

Rocky Bernstein wrote::
> One thing I think might be cool is rather than raising an error for a
> negative Fixnum value is to count from the other end. So caller(-1) is the
> least-recent call.
> 
> If you want me to try my hand at extending the below, let me know.

Check the following code.

>>>  VALUE
>>> +rb_thread_backtrace(VALUE thval, int lev)
>>> +{
>>> +    rb_thread_t *th;
>>> +    GetThreadPtr(thval, th);
>>> +
>>> +    if (th->status != THREAD_KILLED && GET_THREAD() != th) {
>>> +     lev--;
>>> +    }
>>> +
>>> +    return vm_backtrace(th, lev);
>>> +}

-- 
// SASADA Koichi at atdot dot net