OSProcess.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Wed, 28 Sep 2011 20:07:49 +0100
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"
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 COPYRIGHT (c) 2006 by eXept Software AG
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	      All Rights Reserved
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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"
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"{ Package: 'stx:libbasic' }"
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Object subclass:#OSProcess
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	instanceVariableNames:'pid parentPid commandLine'
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	classVariableNames:''
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	poolDictionaries:''
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	category:'System-Support'
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!
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!OSProcess class methodsFor:'documentation'!
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copyright
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"
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 COPYRIGHT (c) 2006 by eXept Software AG
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	      All Rights Reserved
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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"
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!
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documentation
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"
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    OSProcess is an abstract class. Instances represent operating system processes
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    (as opposed to Smalltalk processes).
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    [author:]
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        Stefan Vogel (stefan@zwerg)
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    [instance variables:]
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        pid         SmallInteger    the process id
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        parentPid   SmallInteger    the process id of the parent process
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        commandLine String          the command line of the running command.
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    [class variables:]
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    [see also:]
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        Process
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"
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! !
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!OSProcess methodsFor:'accessing'!
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commandLine
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    ^ commandLine
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!
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commandLine:something
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    commandLine := something.
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!
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parentPid
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    ^ parentPid
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!
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parentPid:something
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    parentPid := something.
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!
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pid
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    ^ pid
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!
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pid:something
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    pid := something.
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! !
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!OSProcess methodsFor:'printing'!
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printOn:aStream
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    aStream 
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        nextPutAll:self className;
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        nextPut:$(.
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    pid printOn:aStream.
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    aStream space.
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    commandLine printOn:aStream.
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    aStream nextPut:$)
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! !
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!OSProcess methodsFor:'queries'!
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getProcessHandle
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    "some OperatingSystems redefine this to resolve this to a processHandle
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     (which must be explicitely freed later).
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     Others simply return the pid here"
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    ^ self subclassResponsibility
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!
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isAlive
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    "answer true, if the process is still alive"
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    ^ self subclassResponsibility
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!
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isDead
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    "answer true, if the process is no longer alive"
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    ^ self isAlive not
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! !
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!OSProcess methodsFor:'terminating'!
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kill
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    "kill the process - the process does not get the chance to clean up"
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    ^ self subclassResponsibility.
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!
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killGroup
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    "killl the processGroup - the processes does not get the chance to clean up"
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    ^ self subclassResponsibility.
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!
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killWithAllChildren
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    "terminate gracefully the process with all of its child processes"
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    ^ self subclassResponsibility.
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!
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terminate
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    "terminate the process gracefully"
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    ^ self subclassResponsibility.
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!
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terminateGroup
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    "terminate the process group.
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     Under Windows, these is the same as terminateWithhAllChildren,
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     under unix, this terminates a subset of all children"
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   ^ self subclassResponsibility.
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!
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terminateWithAllChildren
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    "terminate gracefully the process with all of its child processes"
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    ^ self subclassResponsibility.
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! !
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!OSProcess class methodsFor:'documentation'!
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version_CVS
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    ^ '§Header: /cvs/stx/stx/libbasic/OSProcess.st,v 1.2 2011/03/08 17:01:30 stefan Exp §'
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!
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version_SVN
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    ^ '$Id$'
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! !