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VMSpurRememberedSetTest.class.st
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VMSpurRememberedSetTest.class.st
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Class {
#name : #VMSpurRememberedSetTest,
#superclass : #VMSpurInitializedOldSpaceTest,
#category : #'VMMakerTests-MemoryTests'
}
{ #category : #'tests - from old to new' }
VMSpurRememberedSetTest >> testFreeRememberedOldObjectShouldForgetIt [
| oldObjectAddress rememberedObjectAddress |
"Create a young object and reference it from the old object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
rememberedObjectAddress := self newZeroSizedObject.
memory storePointer: 0 ofObject: oldObjectAddress withValue: rememberedObjectAddress.
self assert: (memory isRemembered: oldObjectAddress).
memory freeObject: oldObjectAddress.
self deny: (memory isRemembered: oldObjectAddress).
]
{ #category : #'tests - from old to perm' }
VMSpurRememberedSetTest >> testMoveToPermSpaceObjectWithOldObjectShouldNotUseNewRememberedSet [
| oldObjectAddress permObjectAddress referencedOldObjectAddress |
"Create a young object and reference it from perm object"
oldObjectAddress := self newOldByteObjectOfSize: 1.
referencedOldObjectAddress := self newOldSpaceObjectWithSlots: 0.
memory storePointer: 0 ofObject: oldObjectAddress withValue: referencedOldObjectAddress.
self assert: memory fromOldSpaceRememberedSet rememberedSetSize equals: 0.
permObjectAddress := memory moveToPermSpace: oldObjectAddress.
self assert: memory fromOldSpaceRememberedSet rememberedSetSize equals: 0.
]
{ #category : #'tests - from perm to old' }
VMSpurRememberedSetTest >> testMoveToPermSpaceObjectWithOldObjectShouldRememberPermObject [
| permObjectAddress oldObjectAddress referencedOldObjectAddress |
"Create a young object and reference it from perm object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
referencedOldObjectAddress := self newOldSpaceObjectWithSlots: 0.
memory storePointer: 0 ofObject: oldObjectAddress withValue: referencedOldObjectAddress.
self deny: (memory isRemembered: oldObjectAddress).
self deny: (memory isRemembered: referencedOldObjectAddress).
permObjectAddress := memory moveToPermSpace: oldObjectAddress.
self deny: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: referencedOldObjectAddress).
self assert: (memory getFromPermToOldSpaceRememberedSet isInRememberedSet: permObjectAddress).
self deny: (memory getFromPermToOldSpaceRememberedSet isInRememberedSet: referencedOldObjectAddress).
]
{ #category : #'tests - from perm to old' }
VMSpurRememberedSetTest >> testMoveToPermSpaceObjectWithOldObjectShouldUpdateOldRememberedSet [
| oldObjectAddress permObjectAddress referencedOldObjectAddress |
"Create a young object and reference it from perm object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
referencedOldObjectAddress := self newOldSpaceObjectWithSlots: 0.
memory storePointer: 0 ofObject: oldObjectAddress withValue: referencedOldObjectAddress.
self assert: memory getFromPermToOldSpaceRememberedSet rememberedSetSize equals: 0.
permObjectAddress := memory moveToPermSpace: oldObjectAddress.
self assert: memory getFromPermToOldSpaceRememberedSet rememberedSetSize equals: 1.
self assert: (memory getFromPermToOldSpaceRememberedSet objectAt: 0) equals: permObjectAddress.
]
{ #category : #'tests - from perm to new' }
VMSpurRememberedSetTest >> testMoveToPermSpaceRememberedObjectShouldBeRememberedToo [
| oldObjectAddress rememberedObjectAddress permObjectAddress |
"Create a young object and reference it from the old object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
rememberedObjectAddress := self newZeroSizedObject.
memory storePointer: 0 ofObject: oldObjectAddress withValue: rememberedObjectAddress.
permObjectAddress := memory moveToPermSpace: oldObjectAddress.
self deny: (memory isRemembered: oldObjectAddress).
self assert: (memory isRemembered: permObjectAddress).
]
{ #category : #'tests - from perm to new' }
VMSpurRememberedSetTest >> testMoveToPermSpaceRememberedObjectShouldUpdateNewRememberedSet [
| oldObjectAddress rememberedObjectAddress permObjectAddress |
"Create a young object and reference it from the old object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
rememberedObjectAddress := self newZeroSizedObject.
memory storePointer: 0 ofObject: oldObjectAddress withValue: rememberedObjectAddress.
self assert: (memory fromOldSpaceRememberedSet objectAt: 0) equals: oldObjectAddress.
permObjectAddress := memory moveToPermSpace: oldObjectAddress.
self assert: (memory getFromPermToNewSpaceRememberedSet objectAt: 0) equals: permObjectAddress.
]
{ #category : #tests }
VMSpurRememberedSetTest >> testOldObjectIsNotRemembered [
| oldObjectAddress |
oldObjectAddress := self newOldSpaceObjectWithSlots: 0.
self deny: (memory isRemembered: oldObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testOverflowRememberedSetShouldMakeItGrow [
| oldObjectRootAddress originalLimit youngObjectAddress |
originalLimit := memory getFromOldSpaceRememberedSet rememberedSetLimit.
"Create as many objects for the remembered set + 1"
oldObjectRootAddress := self newOldSpaceObjectWithSlots: originalLimit + 1.
1 to: originalLimit + 1 do: [ :i |
memory
storePointer: i - 1
ofObject: oldObjectRootAddress
withValue: (self newObjectWithSlots: 1).
].
"Flush them to the old space"
memory coInterpreter method: oldObjectRootAddress.
memory flushNewSpace.
"Make old objects reference a young object"
youngObjectAddress := self newZeroSizedObject.
1 to: originalLimit + 1 do: [ :i | | oldObjectAddress |
oldObjectAddress := memory fetchPointer: i - 1 ofObject: oldObjectRootAddress.
memory storePointer: 0
ofObject: oldObjectAddress
withValue: youngObjectAddress ].
self assert: memory getFromOldSpaceRememberedSet rememberedSetLimit equals: originalLimit * 2
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreOldObjectInOldObjectShouldNotRememberAnyone [
| oldObjectAddress storedOldObjectAddress |
"Create a old object and reference it from old object"
storedOldObjectAddress := self newOldSpaceObjectWithSlots: 0.
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
memory storePointer: 0 ofObject: oldObjectAddress withValue: storedOldObjectAddress.
self deny: (memory isRemembered: oldObjectAddress).
self deny: (memory isRemembered: storedOldObjectAddress).
]
{ #category : #'tests - from perm to old' }
VMSpurRememberedSetTest >> testStoreOldObjectInPermObjectShouldRememberPermObject [
| permObjectAddress oldObjectAddress |
"Create a old object and reference it from perm object"
permObjectAddress := self newOldSpaceObjectWithSlots: 1.
permObjectAddress := memory moveToPermSpace: permObjectAddress.
oldObjectAddress := self newOldSpaceObjectWithSlots: 0.
memory storePointer: 0 ofObject: permObjectAddress withValue: oldObjectAddress.
self assert: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: oldObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreOldObjectInYoungObjectShouldNotRememberAnyone [
| oldObjectAddress youngObjectAddress |
"Create a old object and reference it from young object"
oldObjectAddress := self newOldSpaceObjectWithSlots: 0.
youngObjectAddress := self newObjectWithSlots: 1.
memory storePointer: 0 ofObject: youngObjectAddress withValue: oldObjectAddress.
self deny: (memory isRemembered: oldObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
]
{ #category : #'tests - from old to perm' }
VMSpurRememberedSetTest >> testStorePermObjectInOldObjectShouldNotRememberAnyone [
| permObjectAddress oldObjectAddress |
"Create a perm object and reference it from old object"
permObjectAddress := self newPermanentObjectWithSlots: 0.
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
memory storePointer: 0 ofObject: oldObjectAddress withValue: permObjectAddress.
self deny: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: oldObjectAddress).
]
{ #category : #'tests - from perm to perm' }
VMSpurRememberedSetTest >> testStorePermObjectInPermObjectShouldNotRememberAnyone [
| permObjectAddress referencedPermObjectAddress |
"Create a perm object and reference it from perm object"
permObjectAddress := self newPermanentObjectWithSlots: 1.
referencedPermObjectAddress := self newPermanentObjectWithSlots: 0.
memory storePointer: 0 ofObject: permObjectAddress withValue: referencedPermObjectAddress.
self deny: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: referencedPermObjectAddress).
]
{ #category : #'tests - from new to perm' }
VMSpurRememberedSetTest >> testStorePermObjectInYoungObjectShouldNotRememberAnyone [
| permObjectAddress youngObjectAddress |
"Create a perm object and reference it from young object"
permObjectAddress := self newPermanentObjectWithSlots: 0.
youngObjectAddress := self newObjectWithSlots: 1.
memory storePointer: 0 ofObject: youngObjectAddress withValue: permObjectAddress.
self deny: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreYoungAndOldObjectInPermObjectShouldRememberPermObject [
| permObjectAddress oldObjectAddress youngObjectAddress |
"Create a old object and reference it from perm object"
permObjectAddress := self newPermanentObjectWithSlots: 2.
oldObjectAddress := self newOldSpaceObjectWithSlots: 0.
youngObjectAddress := self newZeroSizedObject.
memory storePointer: 0 ofObject: permObjectAddress withValue: youngObjectAddress.
memory storePointer: 1 ofObject: permObjectAddress withValue: oldObjectAddress.
"Check flags"
self assert: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: oldObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
"Check sets"
self assert: memory fromOldSpaceRememberedSet rememberedSetSize equals: 0.
self assert: memory getFromPermToNewSpaceRememberedSet rememberedSetSize equals: 1.
self assert: (memory getFromPermToNewSpaceRememberedSet objectAt: 0) equals: permObjectAddress.
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreYoungObjectInOldObjectShouldRememberOldObject [
| oldObjectAddress youngObjectAddress |
"Create a young object and reference it from the old object"
youngObjectAddress := self newZeroSizedObject.
oldObjectAddress := self newOldSpaceObjectWithSlots: 1.
memory storePointer: 0 ofObject: oldObjectAddress withValue: youngObjectAddress.
self assert: (memory isRemembered: oldObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreYoungObjectInPermObjectShouldRememberPermObject [
| permObjectAddress youngObjectAddress |
"Create a young object and reference it from perm object"
youngObjectAddress := self newZeroSizedObject.
permObjectAddress := self newPermanentByteObjectOfSize: 1.
memory storePointer: 0 ofObject: permObjectAddress withValue: youngObjectAddress.
self assert: (memory isRemembered: permObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testStoreYoungObjectInYoungObjectShouldNotRememberAnyone [
| youngObjectAddress storedYoungObjectAddress |
"Create a young object and reference it from the young object"
storedYoungObjectAddress := self newZeroSizedObject.
youngObjectAddress := self newObjectWithSlots: 1.
memory storePointer: 0 ofObject: youngObjectAddress withValue: storedYoungObjectAddress.
self deny: (memory isRemembered: storedYoungObjectAddress).
self deny: (memory isRemembered: youngObjectAddress).
]
{ #category : #tests }
VMSpurRememberedSetTest >> testYoungObjectIsNotRemembered [
| newObjectAddress |
newObjectAddress := self newObjectWithSlots: 1.
self deny: (memory isRemembered: newObjectAddress).
]