Subj : Re: thread control by mutex, predicates and conditions puzzle
To   : comp.programming.threads
From : roland
Date : Fri Jan 07 2005 07:36 pm

Jomu wrote:

> What is this stop/start action thing? Do you want to freeze your
> threads only at some points or wherever they happen to be when you stop
> them?

Say, your thread is blocking on IO. Now an external thread that is in
charge of master control needs to tell: quit and restart IO.
But I do not want to cancel the entire thread! (Imagine I have other 
valuable
state information in my thrad.)

How should I go for it when I
1) want a single thread wide master control while still be able to
    wait on different things during the threads lifetime
2) _and_ write code with portability in mind? (The IO clearly is
    highly system dependant.)

I would be very glad if you could point me to such a pattern, since
I am too a bit concerned of the "thundering herd" problem my broadcast
could cause.

Roland

.