Re: [g-a-devel] WARNING **: FIXME: wait for completion unimplemented

[David Bolter <david bolter utoronto ca>]

Hi Sam,

I think you want object:state-changed:defunct. We have used that in GOK
with some success.

cheers,
David

Quiring, Sam wrote:
> Greetings,
>  
> We have an Accessibility *handle to an Application object (role =
> SPI_ROLE_APPLICATION).  We called Accessible_ref(handle).  At some time
> while we have this handle, the user kills the application with the
> mouse.
>  
> We have introduced a routine, isAccessibleDead(Accessible *handle),
> where we try to determine if the object still exists by examining its
> state.  During this testing, we get a segfault, most likely from
> Accessible_getStateSet(handle).  We have exception handlers around this
> code and if we get a segfault we conclude the object is indeed dead.
> Our accessibility app continues to execute.
>  
> At a later time, if the user clicks on any buried window on the desktop
> to bring it to the top, our accessibility app gets the segfault shown in
> the email below.
>  
> So here's my question:  What is the correct AT-SPI algorithm for
> determining that an Application object is gone?
>  
> When the user kills the application, our app gets a window:deactivate
> event and a window:destroy event for the only direct child of
> Application object, an SPI_ROLE_FRAME object.  My best guess for the
> algorithm is "if I receive a window:destroy for the frame of an
> application, mark the application as dead.  Never use the Accessible
> *handle after that."  Is that the it?
>  
> It is a bug that we are getting a segfault when we call
> Accessible_getStateSet() on a ref'd Accessible *value, right?
>  
> -Sam
>  
>  
> ________________________________
>
> From: gnome-accessibility-devel-bounces gnome org
> [mailto:gnome-accessibility-devel-bounces gnome org] On Behalf Of
> Quiring, Sam
> Sent: Tuesday, March 17, 2009 4:15 PM
> To: gnome-accessibility-devel gnome org
> Subject: [g-a-devel] WARNING **: FIXME: wait for completion
> unimplemented
>
>
> Greetings,
>  
> Does anyone know what this message means:
>  
> ** (process:9316): WARNING **: FIXME: wait for completion unimplemented
>  
> It comes out on the console of my Accessibility app near the same time
> as the stack dump shown below.  This stack dump does not contain any
> code from my accessibility app -- I cause it to happen by switching
> among windows on my desktop.  Any clues about what is going on here
> would be greatly appreciated.
>  
> -Sam 
>  
> Stack Dump (the top frame was called by the 2nd frame, etc.)
> TCF 49:24.522: /usr/lib/libcspi.so.0 [0xb790e969]
> TCF 49:24.522: /usr/lib/libcspi.so.0 [0xb790abe2]
> TCF 49:24.523: /usr/lib/libcspi.so.0 [0xb790f1b2]
> TCF 49:24.523:
> /usr/lib/libgobject-2.0.so.0(g_cclosure_marshal_VOID__POINTER+0x5a)
> [0xb7a300ba]
> TCF 49:24.523: /usr/lib/libgobject-2.0.so.0 [0xb7a22079]
> TCF 49:24.523: /usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x129)
> [0xb7a23759]
> TCF 49:24.523: /usr/lib/libgobject-2.0.so.0 [0xb7a3811a]
> TCF 49:24.523: /usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x8ef)
> [0xb7a39c1f]
> TCF 49:24.523: /usr/lib/libgobject-2.0.so.0(g_signal_emit+0x29)
> [0xb7a39f69]
> TCF 49:24.523: /usr/lib/libspi.so.0 [0xb794fb2f]
> TCF 49:24.523:
> /usr/lib/libspi.so.0(_ORBIT_skel_small_Accessibility_EventListener_notif
> yEvent+0x1f) [0xb794202f]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0 [0xb738a5c7]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0(ORBit_OAObject_invoke+0x35)
> [0xb73907b5]
> TCF 49:24.523:
> /usr/lib/libORBit-2.so.0(ORBit_small_invoke_adaptor+0x4d0) [0xb737d910]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0 [0xb738e424]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0 [0xb738eaa2]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0(giop_thread_queue_process+0xad)
> [0xb73763dd]
> TCF 49:24.523: /usr/lib/libORBit-2.so.0 [0xb7376b26]
>
>
>   
> ------------------------------------------------------------------------
>
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