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smalltalk-1.1.1
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examples
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mem-usage.st
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1991-09-12
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2KB
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56 lines
"Compute the amount of memory and the number of instances for each
Class in the GNU Smalltalk system."
"======================================================================
|
| 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 LICENSE. If not, write to the Free Software
| Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
======================================================================"
!Object methodsFor: 'demo'!
showMemUsage
| t numObjs classObjs totalInstanceSize instVarSize |
numObjs _ t _ 0.
Object withAllSubclasses do:
[ :class | class printNl.
totalInstanceSize _ classObjs _ 0.
instVarSize _ class instSize.
(class == MethodContext or: [ class == BlockContext ])
ifFalse: [ class allInstancesDo:
[ :inst | totalInstanceSize _ totalInstanceSize +
((WordMemory at: (Memory addressOf: inst)) * 4).
classObjs _ classObjs + 1 ]
].
' Instances: ' print. classObjs printNl.
' Size: ' print. totalInstanceSize printNl.
stdout nl.
t _ t + totalInstanceSize.
numObjs _ numObjs + classObjs ].
numObjs printNl.
t printNl
!!
Object showMemUsage!