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List:       kde-kimageshop
Subject:    Re: Threading
From:       Matthias Elter <me () main-echo ! net>
Date:       1999-09-10 8:11:43
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Am Mon, 06 Sep 1999 schrieb Bavo De Ridder:
> >%_Hello,
> 
> I have a design question concerning the threading library in kimageshop.
> When I was trying to generalize the interface so we could dynamically load
> the desired threading library, I stumbled over the following problem:
> whenever I tried to design a generic interface I always found myself
> designing POSIX again. This means that it is very difficult to make the
> library generic so a lot of threading libraries can be used.
> 
> Currently there are two kinds of threading libraries available:
> 1)       POSIX implementations, these are standardized in the header files
> 2)       libaries which don’t follow the POSIX standard and are mostly
> unusable for any industrial strength applications.
> 
> To conclude: until now I see good reasons not to implement a generic
> threading library. Instead we could stick with Pthreads (POSIX threads).
> Every platform capable of multithreading supports POSIX threading. Platforms
> not supporting POSIX threads often have only very poor and unreliable
> alternatives. Userspace level threads are completely unacceptable since they
> will actually degrade performance instead of increasing performance.
> 
> What do you think about this ?

I think we should stick with Pthreads _if_ all platforms supported by KDE have
a sane Pthreads implementation.

Greetings, Matthias

--
Matthias Elter
me@kde.org / me@main-echo.net
KDE developer

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