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SimpleView subclass:#SystemStatusMonitor
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instanceVariableNames:'listView listUpdateDelay updateDelay updateBlock listUpdateBlock
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updateProcess'
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-Tools'
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!
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!SystemStatusMonitor class methodsFor:'defaults'!
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defaultIcon
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^ StandardSystemView defaultIcon
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"Created: 23.1.1997 / 02:52:25 / cg"
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!
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defaultLabel
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^ 'Status Monitor'
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"Created: 23.1.1997 / 02:52:43 / cg"
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! !
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!SystemStatusMonitor class methodsFor:'startup'!
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open
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|top monitor|
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top := StandardSystemView new.
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monitor := self origin:0.0@0.0 corner:1.0@1.0 in:top.
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top extent:monitor preferredExtent.
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top label:self defaultLabel.
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top icon:self defaultIcon.
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top open
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"
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ProcessMonitor open
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"
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"Created: 23.1.1997 / 02:53:42 / cg"
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! !
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!SystemStatusMonitor methodsFor:'destroying'!
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destroy
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updateBlock notNil ifTrue:[
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Processor removeTimedBlock:updateBlock.
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Processor removeTimedBlock:listUpdateBlock.
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] ifFalse:[
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updateProcess notNil ifTrue:[updateProcess terminate]
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].
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super destroy
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"Created: 23.1.1997 / 02:26:50 / cg"
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! !
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!SystemStatusMonitor methodsFor:'drawing'!
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updateView
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self updateList.
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self updateStatus
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"Created: 23.1.1997 / 02:27:05 / cg"
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! !
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!SystemStatusMonitor methodsFor:'events'!
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canHandle:key
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^ key == #InspectIt
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"Created: 23.1.1997 / 02:27:15 / cg"
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!
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keyPress:key x:x y:y
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<resource: #keyboard ( #InspectIt ) >
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key == #InspectIt ifTrue:[
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^ self inspectSelection.
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].
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^ super keyPress:key x:x y:y
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"Modified: 23.1.1997 / 02:27:27 / cg"
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"Created: 23.1.1997 / 02:27:45 / cg"
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! !
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!SystemStatusMonitor methodsFor:'initialization'!
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initialize
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|v|
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super initialize.
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v := HVScrollableView for:SelectionInListView miniScrollerH:true in:self.
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v origin:0.0@0.0 corner:1.0@1.0.
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listView := v scrolledView.
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listView font:font.
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listView menuHolder:self; menuPerformer:self; menuMessage:#statusMenu.
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listView multipleSelectOk:true.
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listView delegate:(KeyboardForwarder toView:self).
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listView doubleClickAction:[:line | self doubleClicked].
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updateDelay := 0.5.
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listUpdateDelay := 5.
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"/ event mode is no longer used;
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"/ this event support may vanish
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Processor isPureEventDriven ifTrue:[
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updateBlock := [self updateStatus].
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listUpdateBlock := [self updateList].
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].
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"
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ProcessMonitor open
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"
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"Modified: 23.1.1997 / 03:21:14 / cg"
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!
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mapped
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super mapped.
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self updateStatus.
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self updateList.
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"Created: 23.1.1997 / 02:30:05 / cg"
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!
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realize
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super realize.
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self startUpdateProcess.
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"Created: 23.1.1997 / 02:30:28 / cg"
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!
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reinitialize
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updateProcess := nil.
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super reinitialize.
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self startUpdateProcess.
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"Modified: 22.12.1995 / 22:51:14 / cg"
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"Created: 23.1.1997 / 02:30:43 / cg"
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!
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startUpdateProcess
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updateBlock notNil ifTrue:[
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Processor addTimedBlock:updateBlock afterSeconds:updateDelay.
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Processor addTimedBlock:listUpdateBlock afterSeconds:listUpdateDelay.
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] ifFalse:[
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updateProcess := [
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[
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992
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|id cnt myDelay|
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myDelay := Delay forSeconds:0.5.
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981
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"
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every 20ms, we look which process runs;
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every half second, the status is updated.
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every 5 seconds, the list of processes is
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built up again
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"
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[true] whileTrue:[
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1 to:9 do:[:i |
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"/ cpuUsages := IdentityDictionary new.
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"/ 1 to:25 do:[:i |
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"/ (Delay forSeconds:0.02) wait.
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"/ id := Processor interruptedProcess id.
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"/ cnt := cpuUsages at:id ifAbsent:[0].
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"/ cpuUsages at:id put:cnt + 1.
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"/ ].
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992
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myDelay wait.
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981
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self updateStatus.
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].
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992
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myDelay wait.
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981
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self updateList.
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]
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] valueOnUnwindDo:[
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updateProcess := nil
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]
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] forkAt:(Processor userSchedulingPriority + 1).
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updateProcess name:'monitor [' ,
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Processor activeProcess id printString ,
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'] update'.
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"
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raise my own priority
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"
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Processor activeProcess priority:(Processor userSchedulingPriority + 2)
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].
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"Created: 23.1.1997 / 02:30:58 / cg"
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992
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"Modified: 24.1.1997 / 21:40:11 / cg"
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981
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! !
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!SystemStatusMonitor methodsFor:'queries'!
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preferredExtent
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"return my preferred extent"
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^ (font widthOf:self titleLine) + 40 @ 100
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"Modified: 23.1.1997 / 02:35:01 / cg"
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"Created: 23.1.1997 / 02:51:24 / cg"
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! !
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!SystemStatusMonitor class methodsFor:'documentation'!
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version
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992
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^ '$Header: /cvs/stx/stx/libtool/SystemStatusMonitor.st,v 1.2 1997-01-24 20:43:22 cg Exp $'
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981
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! !
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