Subj : Re: Challenge: Multithreading & Synchronization
To   : comp.programming.threads
From : Maciej Sobczak
Date : Sat May 21 2005 01:01 am

Uenal Mutlu wrote:

>>How do you achieve the "wait for something to be done"?
>>
>>Example:
>>One thread moves some elements from one container to another. I want to
>>know (in different thread) when it is done.
> 
> I personally do use an atomic flag

But I mean - how do you *wait* for it to happen?

If you use the flag, then how do you know *when* to check this flag?
Do you wait? Or do you just check the flag "from time to time"?

> There are many alternatives. The simplest is:
>    volatile bool gMyFlag = false;
> BUT: this method is not recommended.

Rightly so - it does not work.

-- 
Maciej Sobczak : http://www.msobczak.com/
Programming    : http://www.msobczak.com/prog/

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