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VMStackMappingTest.class.st
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VMStackMappingTest.class.st
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Class {
#name : #VMStackMappingTest,
#superclass : #VMSpurInitializedOldSpaceTest,
#category : #'VMMakerTests-MemoryTests'
}
{ #category : #helpers }
VMStackMappingTest >> buildStackFromFrames [
3 timesRepeat: [
| method |
method := methodBuilder newMethod buildMethod.
stackBuilder addNewFrame
method: method;
beSuspended ].
stackBuilder buildStack
]
{ #category : #helpers }
VMStackMappingTest >> newContext [
| method |
method := methodBuilder newMethod buildMethod.
^ self
newSmallContextReceiver: memory nilObject
method: method
arguments: #( )
temporaries: #( )
ip: 10
]
{ #category : #tests }
VMStackMappingTest >> testCreatingNewContextByHandShouldbeSingle [
self assert: (interpreter isSingleContext: self newContext)
]
{ #category : #tests }
VMStackMappingTest >> testDivorceAMarriedContextShuoldMakeItSingle [
| context fp |
context := self newContext.
interpreter marryContextInNewStackPageAndInitializeInterpreterRegisters: context.
fp := interpreter frameOfMarriedContext: context.
interpreter divorceFrame: fp andContext: context.
self assert: (interpreter isSingleContext: context)
]
{ #category : #tests }
VMStackMappingTest >> testDivorceFramesInPage [
| page |
self buildStackFromFrames.
page := stackBuilder page.
stackBuilder frames do:[ :aFrame |
aFrame marryToContext.
].
stackBuilder frames do:[ :aFrame |
self assert: aFrame isMarried.
].
interpreter divorceFramesIn: page.
stackBuilder frames do:[ :aFrame |
self assert: aFrame isSingle.
].
self assert: (interpreter stackPages isFree: page)
]
{ #category : #tests }
VMStackMappingTest >> testMarryNewContextIsMarried [
| context |
context := self newContext.
interpreter marryContextInNewStackPageAndInitializeInterpreterRegisters: context.
self assert: (interpreter isStillMarriedContext: context)
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceBaseFrameShouldFreeOldPage [
| aContext framePointerToMarry stackPointerToMarry oldPage |
self buildStackFromFrames.
oldPage := interpreter stackPage.
framePointerToMarry := interpreter stackPage baseFP.
stackPointerToMarry := interpreter frameCallerSP: (interpreter frameCallerFP: interpreter framePointer).
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
self assert: oldPage isFree
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceBaseFrameShouldSetDivorcedContextAsSenderContextInNewPage [
| aContext framePointerToMarry stackPointerToMarry expectedDivorcedContext |
self buildStackFromFrames.
framePointerToMarry := interpreter stackPage baseFP.
stackPointerToMarry := interpreter frameCallerSP: (interpreter frameCallerFP: interpreter framePointer).
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
expectedDivorcedContext := interpreter frameCallerContext: interpreter stackPage baseFP.
self assert: expectedDivorcedContext equals: aContext.
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceBaseFrameShouldSplitPage [
| aContext framePointerToMarry stackPointerToMarry oldPage newPage |
self buildStackFromFrames.
oldPage := interpreter stackPage.
framePointerToMarry := interpreter stackPage baseFP.
stackPointerToMarry := interpreter frameCallerSP: (interpreter frameCallerFP: interpreter framePointer).
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
newPage := interpreter stackPage.
self deny: oldPage equals: newPage
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceMiddleFrame [
| aContext framePointerToMarry stackPointerToMarry |
self buildStackFromFrames.
framePointerToMarry := interpreter frameCallerFP: interpreter framePointer.
stackPointerToMarry := interpreter frameCallerSP: interpreter framePointer.
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
self assert: (interpreter isSingleContext: aContext).
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceMiddleFrameShouldSetDivorcedContextAsSenderContextInNewPage [
| aContext framePointerToMarry stackPointerToMarry expectedDivorcedContext oldBaseFramePointer callerContext |
self buildStackFromFrames.
framePointerToMarry := interpreter frameCallerFP: interpreter framePointer.
stackPointerToMarry := interpreter frameCallerSP: interpreter framePointer.
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
oldBaseFramePointer := interpreter stackPage baseFP.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
expectedDivorcedContext := interpreter frameCallerContext: interpreter stackPage baseFP.
self assert: (interpreter frameHasContext: oldBaseFramePointer).
self assert: expectedDivorcedContext equals: aContext.
callerContext := interpreter frameContext: oldBaseFramePointer.
self assert: (memory fetchPointer: SenderIndex ofObject: expectedDivorcedContext) equals: callerContext.
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceMiddleFrameShouldSplitPage [
| aContext framePointerToMarry stackPointerToMarry initialiNumberOfusedPages newNumberOfUsedPages |
self buildStackFromFrames.
initialiNumberOfusedPages := interpreter stackPages pages count:[ :aPage | aPage isFree not ].
framePointerToMarry := interpreter frameCallerFP: interpreter framePointer.
stackPointerToMarry := interpreter frameCallerSP: interpreter framePointer.
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
newNumberOfUsedPages := interpreter stackPages pages count:[ :aPage | aPage isFree not ].
self assert: initialiNumberOfusedPages + 1 equals: newNumberOfUsedPages
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceTopFrame [
| aContext framePointerToMarry stackPointerToMarry |
self buildStackFromFrames.
framePointerToMarry := interpreter framePointer.
stackPointerToMarry := interpreter stackPointer.
aContext := interpreter ensureFrameIsMarried: framePointerToMarry SP: stackPointerToMarry.
interpreter divorceFrame: framePointerToMarry andContext: aContext.
self assert: (interpreter isSingleContext: aContext).
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryThenDivorceTopFrameShouldNotSplitPage [
| aContext initialiNumberOfusedPages newNumberOfUsedPages |
self buildStackFromFrames.
initialiNumberOfusedPages := interpreter stackPages pages count:[ :aPage | aPage isFree not ].
aContext := interpreter ensureFrameIsMarried: interpreter framePointer SP: interpreter stackPointer.
interpreter divorceFrame: interpreter framePointer andContext: aContext.
newNumberOfUsedPages := interpreter stackPages pages count:[ :aPage | aPage isFree not ].
self assert: initialiNumberOfusedPages equals: newNumberOfUsedPages
]
{ #category : #'test-context-tomove' }
VMStackMappingTest >> testMarryTopFrame [
| aContext |
self buildStackFromFrames.
aContext := interpreter ensureFrameIsMarried: interpreter framePointer SP: interpreter stackPointer.
self assert: (interpreter isStillMarriedContext: aContext).
]