Re: [Boost-users] status of boost::signal multi-threading support

From: Stephen torri (storri_at_[hidden])
Date: 2005-01-04 14:09:37

On Tue, 2005-01-04 at 13:59 -0500, Doug Gregor wrote:
> > What are the symptoms of this behavior?
> 
> If you're using a signal from two threads concurrently, you will most 
> likely see random crashes and other bad behavior. Signals keep a lot of 
> state, even when they are being invoked, so just about anything can 
> trip it up.

The first thing that came to mind about this was thread specific storage
(TSS). Here is a design pattern that will do what I think we need.
http://www.cs.wustl.edu/~schmidt/PDF/TSS-pattern.pdf

> Ideally, a thread-safe Signals would allow you to invoke in several 
> threads at one, disconnect signals in several threads concurrently, 
> etc.

Ok. I get the high-level concept.

Stephen