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Re: Multithread, Window, Event, Runloop, ... => Headache
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Re: Multithread, Window, Event, Runloop, ... => Headache


  • Subject: Re: Multithread, Window, Event, Runloop, ... => Headache
  • From: Marco Antognini <email@hidden>
  • Date: Sat, 19 Feb 2011 11:40:24 +0100

On Feb 19, 2011, at 3:10, Ken Thomases wrote:

> On Feb 17, 2011, at 8:48 AM, Marco Antognini wrote:
>
>> But now I'm stuck with a problem : is there any way to create/destroy window/view, make them live (e.g. rendering process) and get event notification; all that only in a worker thread (like we can do on Linux or Windows) ?
>
> Short answer: no.
>
> To the Mac frameworks, the main thread is special.  The main thread is always the original thread of the process.  You can't designate which thread is the main thread.
>
> One can poke around in the Darwin sources to see that the non-portable pthread_main_np() function is determined as the C library initializes itself, and further that CFRunLoopGetMain() and similar functions rely on it.
>
> Also, some of the frameworks install run loop sources on the current thread's run loop when they are loaded.  For a typical program, they are loaded when the executable is loaded when there is only the main thread. So, their run loop sources are only processed on the main thread.
>
> I think your best bet is to reserve the main thread for running the standard main application event loop and spawn a secondary thread to run the work of the client of your library.  I realize this is a cumbersome requirement on both you and the clients of the library.  Sorry I don't have better news.
>
> Regards,
> Ken
>

That's what I was afraid of...

Anyway, thank you for your answer even if it's bad news for me.

Best,
Marco_______________________________________________

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References: 
 >Multithread, Window, Event, Runloop, ... => Headache (From: Marco Antognini <email@hidden>)
 >Re: Multithread, Window, Event, Runloop, ... => Headache (From: Ken Thomases <email@hidden>)

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