/usr/share/gnu-smalltalk/examples/Timer.st is in gnu-smalltalk-common 3.2.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | "======================================================================
|
| Handy Timer object for establishing periodic activities
|
|
======================================================================"
"======================================================================
|
| Copyright 1988-92, 1994-95, 1999, 2000 Free Software Foundation, Inc.
| Written by Paolo Bonzini.
|
| 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 2, 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
======================================================================"
Object subclass: #Timer
instanceVariableNames: 'period doBlock stopBlock atStopBlock process '
classVariableNames: ''
poolDictionaries: ''
category: 'Examples-Processes'!
!Timer methodsFor: 'accessing'!
atStopBlock
^atStopBlock
!
atStopBlock: aBlock
atStopBlock := aBlock
!
doBlock
^doBlock
!
doBlock: aValue
doBlock := aValue
!
processPriority
^Processor userSchedulingPriority
!
stopBlock
^stopBlock
!
stopBlock: aValue
stopBlock := aValue
!
period
^period
!
period: aValue
period := aValue
! !
!Timer methodsFor: 'actions'!
resume
process isNil ifFalse: [ process resume. ].
!
start
process isNil ifFalse: [ ^self ].
process := [ [ self stopBlock value ]
whileFalse: [
(Delay forMilliseconds: self period) wait.
doBlock value ].
self atStopBlock isNil ifFalse: [ self atStopBlock value ].
process := nil
] forkAt: self processPriority
!
stop
process isNil ifFalse: [ process terminate. ].
process := nil.
!
suspend
process isNil ifFalse: [ process suspend. ].
! !
!Timer class methodsFor: 'instance-creation'!
every: milliseconds do: aBlock stopWhen: anotherBlock
^self new
period: milliseconds;
doBlock: aBlock;
stopBlock: anotherBlock;
start;
yourself
!
every: milliseconds do: aBlock stopWhen: anotherBlock afterStopDo: stopBlock
^self new
period: milliseconds;
doBlock: aBlock;
stopBlock: anotherBlock;
atStopBlock: stopBlock;
start;
yourself
! !
|