[gameprogrammer] Re: Multi-Threading in C++

["richard sabbarton" <richard.sabbarton@gmail.com>]

Hi Paulo,

 

Thank you very much for the heads up on that one.  I have now looked into this further and I have moved over to using _beginthread().  I had to change my function definitions and ensure that they do not return any values and it is now all working.  I am glad I did this now at the beginning of my project...

 

Thanks again.
 

Richard
 

On 03/05/07, Paulo Pinto <pjmlp@progtools.org> wrote:

Hi,

DO NOT use CreateThread() unless you are aware of its shortcomings.

http://msdn2.microsoft.com/en-us/library/ms682453.aspx

"A thread in an executable that calls the C run-time library (CRT) should use
the _beginthreadex and _endthreadex functions for thread management rather than
CreateThread and ExitThread; this requires the use of the multi-threaded version
of the CRT. If a thread created using CreateThread calls the CRT, the CRT may
terminate the process in low-memory conditions."

Cheers,
Paulo


Quoting richard sabbarton <richard.sabbarton@gmail.com>:

> Hi All,
>
> I am relatively new to the list and I am still learning.  I am working on a
> 3D game (personal learning project at the moment) and I am trying to spawn a
> new thread at a certain point in my code.  The purpose of this thread is to
> pull objects, models and textures from files into memory (for OpenGL) while
> I am continuing to render in the primary thread.
>
> So far I have created a thread and the thread spawns OK.  It starts running
> but during the loading process I am getting access violation errors when
> trying to access arrays of GLuint variables (for the textures).  At this
> point the arrays are not in use by the primary thread so I thought I would
> be able to avoid using any sort of mutex.  I am still new to
> multi-threading and I am using the standard WINAPI CreateThread() function.
>
> Can anyone offer any advice on how to do this or point me to any good
> tutorials online.
>
> Thanks
>
> Richard
>




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