[squeak-dev] lock up in screen drag

Eliot Miranda eliot.miranda at gmail.com
Tue Jul 19 00:33:41 UTC 2016

Hi ALl,

   I'm seeing a lock up that appears to be on window dragging.  This is on
Mac OS X with a new VM.  The symptom is that the screen goes blank.  I see
this process when sending SIGUSR1 to the process:

Process  0x4800ad0 priority 40
0xbffac304 M [] in Delay>wait 0x4802858: a(n) Delay
0xbffac324 M BlockClosure>ifCurtailed: 0x4a920e0: a(n) BlockClosure
0xbffac340 M Delay>wait 0x4802858: a(n) Delay
0xbffac36c M Rectangle>newRectFrom: 0x4803df0: a(n) Rectangle
0xbffac39c I PluggableSystemWindow(SystemWindow)>doFastFrameDrag:
0x4802740: a(n) PluggableSystemWindow
0xbffac3b8 M PluggableSystemWindow(SystemWindow)>startDragFromLabel:
0x4802740: a(n) PluggableSystemWindow
0xbffac3d8 M EventHandler>send:to:withEvent:fromMorph: 0x4803f30: a(n)
0xbffac408 I EventHandler>startDrag:fromMorph: 0x4803f30: a(n) EventHandler
0xbffac428 M StringMorph(Morph)>startDrag: 0x4801458: a(n) StringMorph
0xbffac44c I MouseClickState>drag: 0x4803fc8: a(n) MouseClickState
0xbffac474 M MouseClickState>handleEvent:from: 0x4803fc8: a(n)
0xbffac498 M HandMorph>handleEvent: 0x5cef1a0: a(n) HandMorph
0xbffac4c4 M HandMorph>processEvents 0x5cef1a0: a(n) HandMorph
0xbffac4e0 M [] in WorldState>doOneCycleNowFor: 0x5d1ba70: a(n) WorldState
0xbffac504 M Array(SequenceableCollection)>do: 0x4e6fa10: a(n) Array
0xbffac520 M WorldState>handsDo: 0x5d1ba70: a(n) WorldState
0xbffac540 M WorldState>doOneCycleNowFor: 0x5d1ba70: a(n) WorldState
0xbffac55c M WorldState>doOneCycleFor: 0x5d1ba70: a(n) WorldState
0xbffac578 M PasteUpMorph>doOneCycle 0x52d8780: a(n) PasteUpMorph
0xbffac590 M [] in MorphicProject>spawnNewProcess 0x604fe08: a(n)
0xbffac5b0 I [] in BlockClosure>newProcess 0x48040b8: a(n) BlockClosure

best, Eliot
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