Subj : Re: How to wait on multiple condition variables or implement a similar semantics
To   : comp.programming.threads
From : David Schwartz
Date : Wed Mar 16 2005 08:16 am


"vikky@gmail.com" <bhatnagar.vishal@gmail.com> wrote in message 
news:1110980496.126651.296950@g14g2000cwa.googlegroups.com...

> Thanks for the answer Joe but there is one problem. You suggested that
> i could use multiple conditions and use their ANDing/ORing. However how
> do you suggest to represent the condition pertaining to closing of the
> application?

    With a variable, 'shutdown', and a shutdown mutex. When you want to shut 
the application down, lock the shutdown mutex, set 'shutdown' to 'true', 
unlock the shutdown mutex, and broadcast the condition variable. Have 
threads periodically lock the shutdown mutex, check the 'shutdown' variable, 
and if it's 'true', terminate cleanly.

    DS

.