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Guile + pthreads + reentrancy?
From: |
bindej |
Subject: |
Guile + pthreads + reentrancy? |
Date: |
Mon, 23 Feb 2004 18:22:22 -0500 |
I'm trying to get Guile working in a pthreaded program. I ran up
against the stack overflow problem, as discussed here:
http://sources.redhat.com/ml/guile/1999-10/msg00114.html
http://mail.gnu.org/archive/html/guile-user/2001-08/msg00082.html
http://www.red-bean.com/guile/guile/old/1790.html
I did the message-queueing kludge. It works, although it is messy.
But it's not reentrant. If I tell Guile's pthread to call
scm_eval_string, which in turn calls a gsubr, and that gsubr spawns a
new pthread which queues a call to scm_makfrom0str, we have a
deadlock.
This situtation seems obscure, but it happens in the program I'm
writing.
The only solution I could come up with is to spawn a new Guile thread
for each item popped off the queue, so the loop doesn't stop while a
function is being called. But Guile threads are cooperative, and I
can't figure out any way to have scm_yield called at the right time in
Guile's pthread.
Has anyone else succeeded at doing this? Am I missing something
obvious?
Jeff Binder
- Guile + pthreads + reentrancy?,
bindej <=
Re: Guile + pthreads + reentrancy?, Mikael Djurfeldt, 2004/02/24