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- "======================================================================
- |
- | Process Method Definitions
- |
- ======================================================================"
-
-
- "======================================================================
- |
- | Copyright (C) 1990, 1991 Free Software Foundation, Inc.
- | Written by Steve Byrne.
- |
- | This file is part of GNU Smalltalk.
- |
- | GNU Smalltalk is free software; you can redistribute it and/or modify it
- | under the terms of the GNU General Public License as published by the Free
- | Software Foundation; either version 1, or (at your option) any later version.
- |
- | GNU Smalltalk is distributed in the hope that it will be useful, but WITHOUT
- | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- | FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
- | details.
- |
- | You should have received a copy of the GNU General Public License along with
- | GNU Smalltalk; see the file COPYING. If not, write to the Free Software
- | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- |
- ======================================================================"
-
-
- "
- | Change Log
- | ============================================================================
- | Author Date Change
- | sbyrne 19 Sep 89 Converted to use real method categories
- |
- | sbyrne 25 Apr 89 created.
- |
- "
-
- Link subclass: #Process
- instanceVariableNames: 'suspendedContext priority myList'
- classVariableNames: ''
- poolDictionaries: ''
- category: nil.
-
- Process comment:
- 'I represent a unit of computation. My instances are independantly
- executable blocks that have a priority associated with them, and they
- can suspend themselves and resume themselves however they wish.' !
-
- !Process class methodsFor: 'basic'!
-
- on: aBlock at: aPriority
- ^self new onBlock: aBlock at: aPriority
- !!
-
-
- !Process methodsFor: 'basic'!
-
- terminate
- | processList priority process |
- suspendedContext _ nil.
- myList notNil
- ifTrue: [myList remove: self.
- myList _ nil].
- Processor activeProcess == self
- ifTrue: [self suspend]
- " myList remove: self"
- !!
-
-
-
- !Process methodsFor: 'accessing'!
-
- priority
- ^priority
- !
-
- priority: anInteger
- priority _ anInteger
- !!
-
-
-
- !Process methodsFor: 'private'!
-
- onBlock: aBlock at: aPriority
- suspendedContext _ aBlock.
- priority _ aPriority
-
- !!
-