Class: OSProcess

• Inheritance
• Description
• Related information
• Instance protocol
  • accessing
  • queries
  • terminating

Inheritance:

   Object
   |
   +--OSProcess

Package:

stx:libbasic

Category:

System-Support

Version:

rev: ? date: ? ?

user: ?

file: ? directory: libbasic

module: stx stc-classLibrary: libbasic

Author:

Stefan Vogel (stefan@zwerg)

Description:

OSProcess is an abstract class. Instances represent operating system processes
(as opposed to Smalltalk processes).


[instance variables:]
    pid         SmallInteger    the process id
    parentPid   SmallInteger    the process id of the parent process
    commandLine String          the command line of the running command.

[class variables:]

Related information:

    Process

Instance protocol:

 commandLine

 commandLine: something

 parentPid

 parentPid: something

 pid

 pid: something

 getProcessHandle

some OperatingSystems redefine this to resolve this to a processHandle
(which must be explicitely freed later).
Others simply return the pid here

** This method raises an error - it must be redefined in concrete classes **

 isAlive

answer true, if the process is still alive

** This method raises an error - it must be redefined in concrete classes **

 isDead

answer true, if the process is no longer alive

 kill

kill the process - the process does not get the chance to clean up

** This method raises an error - it must be redefined in concrete classes **

 killGroup

killl the processGroup - the processes does not get the chance to clean up

** This method raises an error - it must be redefined in concrete classes **

 killWithAllChildren

terminate gracefully the process with all of its child processes

** This method raises an error - it must be redefined in concrete classes **

 terminate

terminate the process gracefully

** This method raises an error - it must be redefined in concrete classes **

 terminateGroup

terminate the process group.
Under Windows, these is the same as terminateWithhAllChildren,
under unix, this terminates a subset of all children

** This method raises an error - it must be redefined in concrete classes **

 terminateWithAllChildren

terminate gracefully the process with all of its child processes

** This method raises an error - it must be redefined in concrete classes **