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877
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"
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COPYRIGHT (c) 1996-2011 by Claus Gittinger
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1152
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1155
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New code and modifications done at SWING Research Group [1]:
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1152
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877
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COPYRIGHT (c) 2010-2011 by Jan Vrany, Jan Kurs and Marcel Hlopko
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SWING Research Group, Czech Technical University in Prague
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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1155
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[1] Code written at SWING Research Group contains a signature
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of one of the above copright owners. For exact set of such code,
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see the differences between this version and version stx:libjava
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1152
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as of 1.9.2010
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877
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"
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752
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"{ Package: 'stx:libjava' }"
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Object subclass:#JavaNativeMemory
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instanceVariableNames:'chunk free allocated'
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classVariableNames:''
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poolDictionaries:''
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category:'Languages-Java-Support'
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!
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Link subclass:#ListEntry
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instanceVariableNames:'start stop'
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classVariableNames:''
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poolDictionaries:''
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privateIn:JavaNativeMemory
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!
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877
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!JavaNativeMemory class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1996-2011 by Claus Gittinger
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1152
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42 |
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1155
|
43 |
New code and modifications done at SWING Research Group [1]:
|
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1152
|
44 |
|
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877
|
45 |
COPYRIGHT (c) 2010-2011 by Jan Vrany, Jan Kurs and Marcel Hlopko
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SWING Research Group, Czech Technical University in Prague
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
|
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|
54 |
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1155
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55 |
[1] Code written at SWING Research Group contains a signature
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of one of the above copright owners. For exact set of such code,
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see the differences between this version and version stx:libjava
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1152
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as of 1.9.2010
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877
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"
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! !
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752
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!JavaNativeMemory class methodsFor:'instance creation'!
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new
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"return an initialized instance"
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^ self basicNew initialize.
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! !
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!JavaNativeMemory methodsFor:'accessing'!
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byteAt:address
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^chunk at: address
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"Created: / 09-12-2010 / 17:32:45 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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longAt:address put:value
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chunk longLongAt: address put: value
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"Created: / 09-12-2010 / 17:32:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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memory
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^chunk
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"Created: / 09-07-2012 / 12:44:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!JavaNativeMemory methodsFor:'allocation/deallocation'!
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free: address
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"Frees the memory"
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| aentry aentryPrev |
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aentry := allocated.
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aentryPrev := nil.
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[ aentry notNil and:[aentry start ~~ address ] ] whileTrue:[
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aentryPrev := aentry.
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aentry := aentry next.
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].
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aentry isNil ifTrue:[
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self errorFreeingUnallocatedMemory: 'Never allocated'.
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^self.
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].
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752
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"/Remove from allocated list
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aentryPrev notNil ifTrue:[
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aentryPrev next: aentry next.
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] ifFalse:[
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allocated := aentry next.
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].
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free := self insert: aentry into: free join: true.
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"/Insert free entry
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752
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"Created: / 07-12-2010 / 23:33:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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malloc: size
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"Allocate new chunk of memory, size bytes long"
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| fentry aentry |
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fentry := free.
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[ fentry notNil and:[fentry size < size] ] whileTrue:[
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fentry := fentry next.
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].
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fentry isNil ifTrue:[
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self errorOutOfMemory: 'Not enounh memory or too fragmented'.
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^self.
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].
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752
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"/ create allocation entry
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aentry := ListEntry new
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start: fentry start;
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stop: fentry start + size - 1.
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"/Update free entry
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fentry start: fentry start + size.
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752
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allocated := self insert: aentry into: allocated join: false.
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^aentry start.
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752
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"Created: / 07-12-2010 / 23:25:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!JavaNativeMemory methodsFor:'error reporting'!
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errorAccessingUnallocatedMemory:arg
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self shouldImplement
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"Created: / 07-12-2010 / 23:40:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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errorFreeingUnallocatedMemory:arg
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self shouldImplement
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"Created: / 09-07-2012 / 10:57:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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errorOutOfMemory: message
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self shouldImplement
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"Created: / 09-07-2012 / 10:52:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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752
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! !
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!JavaNativeMemory methodsFor:'initialization'!
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initialize
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"Invoked when a new instance is created."
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chunk:= ByteArray new: 1024 * 1024.
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free := ListEntry new start: 1; stop: chunk size.
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allocated := nil.
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752
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"/ super initialize. -- commented since inherited method does nothing
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"Modified: / 09-07-2012 / 11:54:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!JavaNativeMemory methodsFor:'private'!
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insert: entry into: list join: join
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"Inserts an entry into given list. Returns new
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list. If join is true, possibly adjacent entries are joined"
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| current prev |
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list isNil ifTrue:[ ^ entry ].
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current := list.
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prev := nil.
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[ current notNil and:[ current stop < entry start ] ] whileTrue:[
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prev := current.
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current := current next.
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].
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prev isNil ifTrue:[
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entry next: current join: join.
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^entry.
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].
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prev next: entry join: join.
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entry next: current join: join.
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^list
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"Created: / 09-07-2012 / 11:29:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!JavaNativeMemory::ListEntry methodsFor:'accessing'!
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next
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^nextLink
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"Created: / 09-07-2012 / 11:57:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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next: next
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self next: next join: false.
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"Created: / 09-07-2012 / 11:58:24 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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size
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^stop
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"Created: / 09-07-2012 / 10:49:59 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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start
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^ start
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"Created: / 09-07-2012 / 11:23:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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start:something
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start := something.
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!
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stop
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^ stop
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"Created: / 09-07-2012 / 11:23:41 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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stop:something
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stop := something.
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! !
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!JavaNativeMemory::ListEntry methodsFor:'printing & storing'!
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printOn:aStream
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"append a printed representation if the receiver to the argument, aStream"
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super printOn:aStream.
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aStream nextPutAll:'('.
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start printOn:aStream.
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aStream nextPutAll:'..'.
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stop printOn:aStream.
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aStream nextPutAll:')'.
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"Modified: / 09-07-2012 / 11:54:12 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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273 |
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!JavaNativeMemory::ListEntry methodsFor:'utilities'!
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next: next join: join
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(join and:[next notNil]) ifTrue:[
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stop + 1 == next start ifTrue:[
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stop := next stop.
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(nextLink notNil and:[stop + 1 == nextLink start]) ifTrue:[
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stop := nextLink stop.
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nextLink := nextLink next.
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].
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^self
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].
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].
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nextLink := next.
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"Created: / 09-07-2012 / 11:49:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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752
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290 |
! !
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!JavaNativeMemory class methodsFor:'documentation'!
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293 |
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version_SVN
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^ '$Id$'
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296 |
! !
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