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"
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COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague
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All Rights Reserved
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the 'Software'), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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"
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"{ Package: 'stx:libtool' }"
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"{ NameSpace: Tools }"
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BackgroundJob subclass:#BackgroundQueueProcessingJob
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instanceVariableNames:'queue queueAccessLock'
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-CodeView'
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!
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!BackgroundQueueProcessingJob class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 2010 by Jan Vrany, SWING Research Group. CTU in Prague
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2573
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All Rights Reserved
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2575
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the 'Software'), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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"
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! !
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!BackgroundQueueProcessingJob class methodsFor:'instance creation'!
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new
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"return an initialized instance"
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^ self basicNew initialize.
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! !
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!BackgroundQueueProcessingJob methodsFor:'adding & removing'!
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add: object
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"includes: is not synchronized, but should not harm"
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queueAccessLock critical:[
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(queue includes: object)
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ifFalse:[queue add: object].
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self start].
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"Created: / 28-04-2011 / 20:40:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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"Modified: / 18-05-2011 / 23:30:28 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!BackgroundQueueProcessingJob methodsFor:'initialization'!
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initialize
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"Invoked when a new instance is created."
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queue := OrderedCollection new.
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queueAccessLock := RecursionLock new.
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"Modified: / 18-05-2011 / 23:25:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!BackgroundQueueProcessingJob methodsFor:'processing'!
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process
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| item |
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[
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item := nil.
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queueAccessLock critical:
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[queue isEmpty ifFalse:[item := queue removeFirst]].
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item isNil ifFalse:
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[self processItem: item].
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item notNil.
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] whileTrue
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"Created: / 28-04-2011 / 20:36:35 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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"Modified: / 18-05-2011 / 23:30:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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processItem: item
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^job value: item
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"Created: / 28-04-2011 / 20:36:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!BackgroundQueueProcessingJob class methodsFor:'documentation'!
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version_CVS
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^ '$Header: /cvs/stx/stx/libbasic2/BackgroundQueueProcessingJob.st,v 1.2 2011-07-03 17:50:13 cg Exp $'
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!
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version_SVN
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^ '§Id§'
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! !
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