Re: MPTask equivalent?

FROM : Charles Steinman
DATE : Wed Feb 20 21:09:26 2008

--- Trygve Inda <<email_removed>> wrote:

> I am moving a rendering engine of sorts from Carbon
> to Cocoa. It is heavily
> based on MPTasks and uses Carbon events to send
> messages back to the main
> event handler (on the main thread) to handle things
> that are not thread
> safe.
>
> In Carbon, I would Post an event and call:
>
> err = MPWaitOnQueue (pTaskInfo->mSignalQueueID,
> (void **)
> &pTaskInfo->mQueueMessage, NULL, NULL,
> kDurationForever);
> if (pTaskInfo->mQueueMessage == kMyTaskSignalAbort)
> pTaskInfo->mAbort = true;
>
> When the main thread would be done with the task, it
> would call:
>
> MPNotifyQueue (pTaskInfo->mSignalQueueID, (void *)
> kMyTaskSignalContinue,
> NULL, NULL);
>
>
> Is there a good online reference to the Cocoa
> equivalent of this?


If you can require 10.5, you might look at
NSOperation/NSOperationQueue. I haven't used the
Carbon Multiprocessing Services, but it sounds like
that should be roughly equivalent.

>
> How much of Cocoa is thread safe?


http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/ThreadSafetySummary/chapter_950_section_2.html

Cheers,
Chuck


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