[SDL] SDL thread problem

[Edward Byard]

Stupid me.

That's what you get when you're used to embedded systems (no OS) and just expect a thread to run in the background until you stop it (read: an interrupt function).

So I need to have a loop in my thread, I guess....and just do stuff in there until it needs to quit.

Thanks
Ed

----- Original Message ----
From: David Olofson <david at olofson.net>
To: A list for developers using the SDL library. (includes SDL-announce) <sdl at lists.libsdl.org>
Sent: Wednesday, 23 May, 2007 2:30:45 PM
Subject: Re: [SDL] SDL thread problem

On Wednesday 23 May 2007, Edward Byard wrote:
> Hi Folks
> 
> Got a strange problem using threads under SDL...
> 
> Basically, once I create the thread, the thread-function gets called
> once (on creation) and never again.

Why, yes...? That's how it's supposed to work. :-) The thread is 
created and scheduled to run, and then control returns to the main 
thread *at the same time* (literally, if you're on a 
multicore/multiprocessor machine) as the thread function is executed.

The thread ends when the thread function returns. (It's possible to 
kill threads from the outside too, but doing so is asking for 
trouble. Tell the threads to stop and let them clean up and 
end "naturally" whenever possible.)

BTW, this is not really SDL specific. This is pretty much how threads 
work, regardless of platforms and APIs.


//David Olofson - Programmer, Composer, Open Source Advocate

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