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12890
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"{ Package: 'stx:libbasic' }"
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19286
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"{ NameSpace: Smalltalk }"
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12890
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Object subclass:#OSProcess
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instanceVariableNames:'pid parentPid command environment directory inStream outStream
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errorStream exitStatus finishSema'
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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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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 class methodsFor:'initialize'!
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initialize
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"Backward compatibility"
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Win32Process := self.
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! !
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!OSProcess methodsFor:'accessing'!
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accessor
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^ self
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!
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command
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"return the value of the instance variable 'command' (automatically generated)"
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^ command
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"Created: / 10.11.1998 / 21:27:07 / cg"
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!
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command:something
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"set the value of the instance variable 'command' (automatically generated)"
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command := something.
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"Created: / 10.11.1998 / 21:27:07 / cg"
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!
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directory
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"return the value of the instance variable 'directory' (automatically generated)"
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^ directory
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"Created: / 10.11.1998 / 21:21:52 / cg"
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!
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directory:something
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"set the value of the instance variable 'directory' (automatically generated)"
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directory := something.
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"Created: / 10.11.1998 / 21:21:52 / cg"
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!
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environment
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"return the value of the instance variable 'environment' (automatically generated)"
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^ environment
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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environment:something
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"set the value of the instance variable 'environment' (automatically generated)"
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environment := something.
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"Created: / 10.11.1998 / 21:27:07 / cg"
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!
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errorStream
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"return the value of the instance variable 'errorStream' (automatically generated)"
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^ errorStream
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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errorStream:something
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"set the value of the instance variable 'errorStream' (automatically generated)"
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errorStream := something.
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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exitStatus
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"return the value of the instance variable 'exitStatus' (automatically generated)"
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^ exitStatus
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"Created: / 10.11.1998 / 21:24:55 / cg"
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!
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exitStatus:something
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"set the value of the instance variable 'exitStatus' (automatically generated)"
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exitStatus := something.
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"Created: / 10.11.1998 / 21:24:55 / cg"
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!
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finishSema
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"return the value of the instance variable 'finishSema' (automatically generated)"
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^ finishSema
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"Created: / 10.11.1998 / 21:21:53 / cg"
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!
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finishSema:something
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"set the value of the instance variable 'finishSema' (automatically generated)"
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finishSema := something.
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"Created: / 10.11.1998 / 21:21:53 / cg"
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!
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inStream
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"return the value of the instance variable 'inStream' (automatically generated)"
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^ inStream
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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inStream:something
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"set the value of the instance variable 'inStream' (automatically generated)"
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inStream := something.
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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outStream
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"return the value of the instance variable 'outStream' (automatically generated)"
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^ outStream
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"Created: / 10.11.1998 / 21:26:34 / cg"
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!
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outStream:something
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"set the value of the instance variable 'outStream' (automatically generated)"
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outStream := something.
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"Created: / 10.11.1998 / 21:26:34 / cg"
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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:'file queries'!
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isExecutable:aPathName
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^ aPathName asFilename isExecutable
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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:$(.
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pid printOn:aStream.
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aStream space.
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command printOn:aStream.
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aStream nextPut:$)
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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:'starting'!
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startProcess
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finishSema := Semaphore new.
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Processor
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monitor:[
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pid := OperatingSystem
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startProcess:command
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inputFrom:inStream
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outputTo:outStream
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errorTo:errorStream
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auxFrom:nil
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environment:nil
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inDirectory:directory
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showWindow:false.
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]
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action:[:status |
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status stillAlive ifFalse:[
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exitStatus := status.
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"/ paranoia?
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pid notNil ifTrue:[
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OperatingSystem terminateProcessGroup:pid.
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OperatingSystem terminateProcess:pid.
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OperatingSystem closePid:pid.
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].
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finishSema signal
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].
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].
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pid isNil ifTrue:[
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exitStatus := OperatingSystem osProcessStatusClass processCreationFailure.
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^ false
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].
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^ true.
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"Created: / 10.11.1998 / 21:23:50 / cg"
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"Modified: / 10.11.1998 / 21:33:16 / cg"
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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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"kill the processGroup - the processes do 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
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^ '$Header$'
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!
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12890
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version_CVS
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^ '$Header$'
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! !
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19286
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21172
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OSProcess initialize!
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