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VMTFreeListNode.class.st
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VMTFreeListNode.class.st
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Class {
#name : #VMTFreeListNode,
#superclass : #Object,
#instVars : [
'nodeOop',
'memory'
],
#category : #'VMMaker-Tools'
}
{ #category : #'instance-creation' }
VMTFreeListNode class >> on: anOop memory: aMemory [
anOop = 0 ifTrue: [ self halt ].
^ self new
memory: aMemory;
nodeOop: anOop;
yourself
]
{ #category : #accessing }
VMTFreeListNode >> address [
^ memory startOfObject: nodeOop
]
{ #category : #accessing }
VMTFreeListNode >> children [
^ self edges
]
{ #category : #accessing }
VMTFreeListNode >> edges [
| edges |
edges := OrderedCollection new.
edges add: (VMTFreeTreeNodeEdge2 memory: memory label: 'Next' oop: self nextOop).
edges add: (VMTFreeTreeNodeEdge2 memory: memory label: 'Previous' oop: self previousOop).
^ edges
]
{ #category : #accessing }
VMTFreeListNode >> hasChildren [
^ self nextOop ~= 0 or: [ self previousOop ~= 0 ]
]
{ #category : #accessing }
VMTFreeListNode >> memory [
^ memory
]
{ #category : #accessing }
VMTFreeListNode >> memory: anObject [
memory := anObject
]
{ #category : #accessing }
VMTFreeListNode >> nextOop [
^ memory
fetchPointer: memory freeChunkNextIndex
ofFreeChunk: nodeOop
]
{ #category : #accessing }
VMTFreeListNode >> nodeOop [
^ nodeOop
]
{ #category : #accessing }
VMTFreeListNode >> nodeOop: anObject [
nodeOop := anObject
]
{ #category : #accessing }
VMTFreeListNode >> previousOop [
^ memory
fetchPointer: memory freeChunkPrevIndex
ofFreeChunk: nodeOop
]
{ #category : #accessing }
VMTFreeListNode >> printOn: aStream [
aStream
nextPutAll: 'FreeTreeNode(';
nextPutAll: nodeOop hex;
nextPutAll: ')'
]
{ #category : #accessing }
VMTFreeListNode >> size [
^ memory bytesInObject: nodeOop
]