Re: [ID 19991229.003] perl 5.005_03 core dumps -- singal

[Ilya Zakharevich <ilya@math.ohio-state.edu>]

On Tue, Jan 11, 2000 at 05:22:20PM -0500, Dan Sugalski wrote:
> >Why do you thing it is not going to be waiting on a blocking system
> >call most of the time?  For many threading paradigms this is exactly
> >what happens.
> 
> So we have sync system calls instead spawn off a thread to do the call 
> while the spawning thread cond_waits on something. To wake the thread you 
> kill the thread doing the syscall and pop a cond_signal to the waiting 
> thread. There are other ways, too, of course.

You still think that you can wake something which cond_wait()s from
another thread.  And you make things extremely complicated and
extremely unefficient.

> >What made you thingk cond_wait() is not a blocking system call?
> 
> What makes you think the cond_wait that I'm thinking of is the one you're 
> thinking of? And what makes you think I'm not considering tracking the 
> condition and signalling it?

Waking *all* the thread which wait on this?

Ilya

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Follow-Ups from:

Dan Sugalski <dan@sidhe.org>

References to:

Dan Sugalski <dan@sidhe.org>
Larry Wall <larry@wall.org>
Ilya Zakharevich <ilya@math.ohio-state.edu>
Ilya Zakharevich <ilya@math.ohio-state.edu>
Ilya Zakharevich <ilya@math.ohio-state.edu>
Dan Sugalski <dan@sidhe.org>

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