[Pyobjc-dev] Crash when closing all documents

[Daniel M. <mil...@gm...>]

I'm having problems calling the selector provided by

NSDocumentController
.closeAllDocumentsWithDelegate:didCloseAllSelector:contextInfo:

Here's my code:

class DocumentController(NSDocumentController):
   ...
   def closeAllDocumentsWithDelegate_didCloseAllSelector_contextInfo_(
     self, delegate, selector, context):
     def callback(result):
         log.debug("%s.%s(%s, %s, %s)",
             delegate, selector, self, result, context)
         perform_selector(delegate, selector, self, result, context)
     saver = DocumentSavingDelegate.alloc().\
         initWithDocuments_callback_context_(
             self.controller.iter_dirty_documents(), callback, context)
     saver.save_next_document()

def perform_selector(delegate, selector, *args):
#   sel = selector.replace(":", "_") # HACK
#   getattr(delegate, sel)(*args)
     inv = NSInvocation.invocationWithMethodSignature_(
         delegate.methodSignatureForSelector_(selector))
     inv.setTarget_(delegate)
     inv.setSelector_(selector)
     for i, arg in enumerate(args):
         inv.setArgument_atIndex_(arg, i + 2)
     inv.invoke()

Here's the debug message and stack trace I get when the callback gets  
called:

DEBUG <DocumentController:  
0x114ab0>._documentController:shouldTerminate:context: 
(<DocumentController: 0x114ab0>, True, 1401200)
2009-11-18 19:32:36.137 EditXTDev[51404:60b] *** ObjC exception  
'NSUncaughtSystemExceptionException' (reason: 'Uncaught system  
exception: signal 10') discarded
Stack trace (most recent call last):
   -[NSMenu _performActionWithHighlightingForItemAtIndex:] (in AppKit)  
+ 49
   -[NSCarbonMenuImpl performActionWithHighlightingForItemAtIndex:]  
(in AppKit) + 174
   -[NSMenuItem _corePerformAction] (in AppKit) + 435
   -[NSApplication sendAction:to:from:] (in AppKit) + 112
   -[NSApplication terminate:] (in AppKit) + 519
   -[NSApplication _shouldTerminate] (in AppKit) + 669
   -[NSApplication sendEvent:] (in AppKit) + 6431
   -[NSWindow sendEvent:] (in AppKit) + 5549
   -[NSControl mouseDown:] (in AppKit) + 812
   -[NSButtonCell trackMouse:inRect:ofView:untilMouseUp:] (in AppKit)  
+ 524
   -[NSCell trackMouse:inRect:ofView:untilMouseUp:] (in AppKit) + 1808
   -[NSCell _sendActionFrom:] (in AppKit) + 169
   -[NSControl sendAction:to:] (in AppKit) + 108
   -[NSApplication sendAction:to:from:] (in AppKit) + 112
   -[NSAlert buttonPressed:] (in AppKit) + 392
   -[NSApplication endSheet:returnCode:] (in AppKit) + 349
   -[NSAlert didEndSheet:returnCode:contextInfo:] (in AppKit) + 133
   -[NSWindow orderOut:] (in AppKit) + 50
   -[NSWindow orderWindow:relativeTo:] (in AppKit) + 105
   -[NSWindow  
_reallyDoOrderWindow:relativeTo:findKey:forCounter:force:isModal:] (in  
AppKit) + 1836
   -[NSWindow(NSSheets) _orderOutRelativeToWindow:] (in AppKit) + 123
   -[NSMoveHelper(NSSheets) _closeSheet:andMoveParent:] (in AppKit) +  
463
   -[NSWindow(NSSheets) _detachSheetWindow] (in AppKit) + 501
   -[NSNotificationCenter postNotificationName:object:] (in  
Foundation) + 56
   -[NSNotificationCenter postNotificationName:object:userInfo:] (in  
Foundation) + 128
   _CFXNotificationPostNotification (in CoreFoundation) + 186
   __CFXNotificationPost (in CoreFoundation) + 905
   _nsnote_callback (in Foundation) + 176
   ffi_closure_SYSV (in _objc.so) + 196
   method_stub (in _objc.so) + 1687
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   function_call (in libpython2.6.dylib) (funcobject.c:524)
   PyEval_EvalCodeEx (in libpython2.6.dylib) (ceval.c:2968)
   PyEval_EvalFrameEx (in libpython2.6.dylib) (ceval.c:3917)
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   pysel_call (in _objc.so) + 1264
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   function_call (in libpython2.6.dylib) (funcobject.c:524)
   PyEval_EvalCodeEx (in libpython2.6.dylib) (ceval.c:2968)
   PyEval_EvalFrameEx (in libpython2.6.dylib) (ceval.c:3917)
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   pysel_call (in _objc.so) + 1264
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   function_call (in libpython2.6.dylib) (funcobject.c:524)
   PyEval_EvalCodeEx (in libpython2.6.dylib) (ceval.c:2968)
   PyEval_EvalFrameEx (in libpython2.6.dylib) (ceval.c:3802)
   PyEval_EvalCodeEx (in libpython2.6.dylib) (ceval.c:2968)
   PyEval_EvalFrameEx (in libpython2.6.dylib) (ceval.c:3802)
   PyEval_EvalCodeEx (in libpython2.6.dylib) (ceval.c:2968)
   PyEval_EvalFrameEx (in libpython2.6.dylib) (ceval.c:3917)
   PyObject_Call (in libpython2.6.dylib) (abstract.c:2492)
   objcsel_call (in _objc.so) + 230
   PyObjCFFI_Caller (in _objc.so) + 2709
   ffi_call (in _objc.so) + 147
   .LCFI1 (in _objc.so) (x86-darwin.S:84)
   -[NSInvocation invoke] (in CoreFoundation) + 136
   __invoking___ (in CoreFoundation) + 29
   -[NSDocumentController(NSInternal)  
_documentController:shouldTerminate:context:] (in AppKit) + 321
   0xffffffff
   _sigtramp (in libSystem.B.dylib) + 43
   NSExceptionHandlerUncaughtSignalHandler (in ExceptionHandling) + 65

Am I doing something wrong or is this a bug?

Versions:

Mac OS X 10.6
Python 2.6.2
PyObjC 2.2b2

Thanks in advance for any help you can provide.

~ Daniel