Subj : Re: reliability of setting thread priority
To   : comp.programming.threads
From : David Schwartz
Date : Fri Feb 25 2005 03:33 pm


<gottlobfrege@gmail.com> wrote in message 
news:1109372884.926187.133540@f14g2000cwb.googlegroups.com...

> Yes, I quite understand.  I guess what I didn't explain is that for
> sane or insane reasons, I'm basically writing my own pthread_once.  I
> just wondered if there was a better way than what boils down to a
> global named mutex - which is by no means bad, but just wondering...
>
> AND, wondering about the consistency of setting thread priorities on
> various platforms.  No one has yet said that messing with thread
> priorities is never consistent ie because you don't know the scheduling
> algorithm or it is not widely supported, etc.
>
> But, yeah, the immediate result was for a pthread_once.

    You can't implement good primitives in a portable way. You need 
platform-specific atomic compare/exchange type operators.

    DS

.