[bug #14759] NSApplication image multithreading problem

[Quentin Mathé]

Update of bug #14759 (project gnustep):

                  Status:                    None => Invalid                

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Follow-up Comment #2:

Here are some notes on which Cocoa classes are thread safe or not:
<http://developer.apple.com/documentation/Cocoa/Conceptual/Multithreading/articles/CocoaSafety.html>
In theory, AppKit is not really thread-safe except for drawing operations
which involve NSView, NSString, NSBezierPath.
I think this -setApplicationImage: method is relying on NSImage which is not
thread-safe. According to Cocoa documentation, NSImage can draw in its own
buffer within a thread, I don't know if GNUstep NSImage is implemented in a
similar fashion.

-setApplicationImage: should be called with DO or with -[NSObject
performSelectorOnMainThread:withObject:waitUntilDone:] (still not implemented
in -base iirc)

We should close this bug probably ? Unless we decide to have NSApplication
fully thread-safe; -performSelectorOnMainThread:withObject:waitUntilDone: has
probably to be implemented then.

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