CFRelease question

[Mike Swingler]

On Sep 27, 2011, at 10:40 AM, Leonid Romanov wrote:

> Hi,
> I've got a question: if we CFRelease a NSWindow with the retain count 1, thus making it 0, will it result in dealloc chain calls? I'm asking this question because I'm investigating http://java.net/jira/browse/MACOSX_PORT-429 and my current theory is that something is wrong with the reference counting (I'm not sure about it, though). 

Absolutely, CFRelease() will call -dealloc when the retain count reaches 0. CFRelease() of a window should occur on the main AppKit Thread 0, since the destruction of a window calls into other parts of AppKit.

A window may temporarily be retained/released/autoreleased by other things, like a block-copy when doing -[JNFRunLoop performOnMainThreadWaiting:withBlock:], or other actions which may introspect the list of open windows.

Regards,
Mike Swingler
Java Engineering
Apple Inc.