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VMMemoryMap.class.st
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VMMemoryMap.class.st
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Class {
#name : #VMMemoryMap,
#superclass : #VMStructType,
#instVars : [
'memoryManager',
'oldSpaceStart',
'oldSpaceEnd',
'newSpaceStart',
'newSpaceEnd',
'allocationReserve',
'initialOldSpaceSize',
'initialNewSpaceSize',
'initialHeadroom',
'memoryMapConfiguration',
'permSpaceStart',
'permSpaceEnd',
'oldSpaceMask',
'initialCodeZoneSize',
'codeZoneStart',
'codeZoneEnd',
'stackPagesStart',
'stackPagesEnd',
'initialPermSpaceSize',
'minPermSpaceSize',
'objectMemory',
'spaceMaskToUse',
'permSpaceMask',
'newSpaceMask'
],
#pools : [
'VMBasicConstants'
],
#category : #'VMMaker-Memory'
}
{ #category : #translation }
VMMemoryMap class >> declareCVarsIn: aCCodeGenerator [
aCCodeGenerator
var: #memoryMapConfiguration type: #implicit.
]
{ #category : #translation }
VMMemoryMap class >> filteredInstVarNames [
^ super filteredInstVarNames copyWithoutAll: #(memoryManager memoryMapConfiguration objectMemory)
]
{ #category : #translation }
VMMemoryMap class >> generateHeader: aBinaryBlock [
aBinaryBlock
value: 'vmMemoryMap.h'
value: (String streamContents: [ :s |
self printTypedefOn: s.
s cr ])
]
{ #category : #translation }
VMMemoryMap class >> instVarNamesAndTypesForTranslationDo: aBinaryBlock [
self filteredInstVarNames do: [ :aName |
aBinaryBlock value: aName value: #'uint64_t' ].
]
{ #category : #translation }
VMMemoryMap class >> needsTypeTag [
^true
]
{ #category : #translation }
VMMemoryMap class >> shouldBeGenerated [
^ false
]
{ #category : #private }
VMMemoryMap >> allocateCodeZone [
initialCodeZoneSize = 0 ifTrue: [ ^ self ].
self codeZoneStart: (self allocateJITMemory: initialCodeZoneSize _: memoryMapConfiguration codeZoneInitialAddress).
self codeZoneStart ifNil: [ self insufficientMemoryAvailableError ].
self codeZoneStart = memoryMapConfiguration codeZoneInitialAddress
ifFalse: [
self logError: 'Could not allocate codeZone in the expected place (%p), got %p' _: memoryMapConfiguration codeZoneInitialAddress _: self codeZoneStart.
self error: 'Error allocating' ].
self codeZoneEnd: codeZoneStart + initialCodeZoneSize.
]
{ #category : #allocating }
VMMemoryMap >> allocateHeap [
<inline: false>
self allocateCodeZone.
self allocateNewObjectsSpace.
self allocateOldObjectsSpace.
self allocatePermObjectsSpace.
]
{ #category : #private }
VMMemoryMap >> allocateJITMemory: desiredSize _: desiredPosition [
<doNotGenerate>
^ memoryManager allocate: desiredSize desiredPosition: desiredPosition
]
{ #category : #private }
VMMemoryMap >> allocateMemory: desiredSize BaseAddress: baseAddress [
<doNotGenerate>
^ memoryManager allocate: desiredSize desiredPosition: baseAddress
]
{ #category : #private }
VMMemoryMap >> allocateNewObjectsSpace [
| newSpaceSizeToAllocate |
newSpaceSizeToAllocate := self roundToAllocationSize: self initialNewSpaceSize + self allocationReserve.
self newSpaceStart: (self allocateMemory: newSpaceSizeToAllocate BaseAddress: memoryMapConfiguration newSpaceInitialAddress).
self newSpaceStart ifNil: [ self insufficientMemoryAvailableError ].
self newSpaceStart = memoryMapConfiguration newSpaceInitialAddress
ifFalse: [
self logError: 'Could not allocate newSpace in the expected place (%p), got %p' _: self newSpaceStart _: memoryMapConfiguration newSpaceInitialAddress.
self error: 'Error allocating' ].
self newSpaceEnd: self newSpaceStart + newSpaceSizeToAllocate.
]
{ #category : #private }
VMMemoryMap >> allocateOldObjectsSpace [
| sizeToAllocate |
sizeToAllocate := self roundToAllocationSize: self initialOldSpaceSize + self initialHeadroom.
self oldSpaceStart: (self allocateMemory: sizeToAllocate BaseAddress: memoryMapConfiguration oldSpaceInitialAddress).
self oldSpaceStart ifNil: [ self insufficientMemoryAvailableError ].
self oldSpaceStart = memoryMapConfiguration oldSpaceInitialAddress
ifFalse: [
self logError: 'Could not allocate oldSpace in the expected place (%p), got %p' _: self oldSpaceStart _: memoryMapConfiguration oldSpaceInitialAddress.
self error: 'Error allocating' ].
self setOldSpaceEnd: self oldSpaceStart + sizeToAllocate
]
{ #category : #private }
VMMemoryMap >> allocatePermObjectsSpace [
| minSize |
minSize := minPermSpaceSize max: initialPermSpaceSize.
minSize = 0 ifTrue: [
^ self ].
minSize := self roundToAllocationSize: minSize.
self permSpaceStart: (self
allocateMemory: minSize
BaseAddress: memoryMapConfiguration permSpaceInitialAddress).
self permSpaceStart ifNil: [ self insufficientMemoryAvailableError ].
self permSpaceStart = memoryMapConfiguration permSpaceInitialAddress
ifFalse: [
self logError: 'Could not allocate permSpace in the expected place (%p), got %p' _: self permSpaceStart _: memoryMapConfiguration permSpaceInitialAddress.
self error: 'Error allocating' ].
self permSpaceEnd: self permSpaceStart + minSize.
objectMemory setPermSpaceFreeStart: self permSpaceStart.
]
{ #category : #allocating }
VMMemoryMap >> allocateSegmentOfSize: ammount minAddress: minAddress resultsIn: blockWithAddressAndSegSize [
| sizeToRequest segmentAddress |
<inline:true>
<var: #sizeToRequest type:'size_t'>
<var: #segmentAddress type:'void *'>
sizeToRequest := self roundToAllocationSize: ammount.
segmentAddress := self allocateMemory: sizeToRequest BaseAddress: minAddress.
blockWithAddressAndSegSize value: segmentAddress value: sizeToRequest.
]
{ #category : #allocating }
VMMemoryMap >> allocateStackPages: initialStackSize [
<inline: false>
<returnTypeC: #void>
| sizeToRequest |
sizeToRequest := self roundToAllocationSize: initialStackSize.
self stackPagesStart: (self allocateMemory: sizeToRequest BaseAddress: memoryMapConfiguration stackPagesInitialAddress).
self stackPagesStart ifNil: [ self insufficientMemoryAvailableError ].
self stackPagesStart = memoryMapConfiguration stackPagesInitialAddress
ifFalse: [
self logError: 'Could not allocate stack in the expected place (%p), got %p' _: memoryMapConfiguration stackPagesInitialAddress _: self stackPagesStart.
self error: 'Error allocating' ].
self stackPagesEnd: self stackPagesStart + sizeToRequest.
self memset: self stackPagesStart _: 0 _: sizeToRequest.
]
{ #category : #utils }
VMMemoryMap >> allocationGranularity [
"In windows we have an allocation granularity. Maybe we have to get it from the system.
https://docs.microsoft.com/en-us/windows/win32/api/sysinfoapi/ns-sysinfoapi-system_info"
self cppIf: WIN32 ifTrue: [ ^ 64 * 1024 ] ifFalse: [ ^ 0 ]
]
{ #category : #accessing }
VMMemoryMap >> allocationReserve [
^ allocationReserve
]
{ #category : #accessing }
VMMemoryMap >> allocationReserve: anInteger [
allocationReserve := anInteger
]
{ #category : #'initial addresses' }
VMMemoryMap >> calculateMaskToUse [
<inline: false>
<var: #newSpaceFirst type: #uint64_t>
<var: #newSpaceLast type: #uint64_t>
<var: #oldSpaceFirst type: #uint64_t>
<var: #oldSpaceLast type: #uint64_t>
<var: #newSpaceMaskAttempt type: #uint64_t>
<var: #oldSpaceMaskAttempt type: #uint64_t>
<var: #allOnes type: #uint64_t>
| newSpaceFirst newSpaceLast oldSpaceFirst oldSpaceLast newSpaceMaskAttempt oldSpaceMaskAttempt allOnes |
memoryMapConfiguration confWordSize = 8
ifTrue: [ allOnes := 16rFFFFFFFFFFFFFFFF ]
ifFalse: [ allOnes := 16rFFFFFFFF ].
newSpaceFirst := memoryMapConfiguration newSpaceInitialAddress.
newSpaceLast := memoryMapConfiguration oldSpaceInitialAddress - 1.
newSpaceMaskAttempt := (newSpaceLast - newSpaceFirst) bitXor: allOnes.
oldSpaceFirst := memoryMapConfiguration oldSpaceInitialAddress.
oldSpaceLast := memoryMapConfiguration permSpaceInitialAddress - 1.
oldSpaceMaskAttempt := (oldSpaceLast - oldSpaceFirst) bitXor: allOnes.
self spaceMaskToUse: (newSpaceMaskAttempt bitAnd: oldSpaceMaskAttempt).
self spaceMaskToUse = 0
ifTrue: [ objectMemory error: 'Could not calculate mask to use to identify new/old/perm objects' ].
self newSpaceMask: (memoryMapConfiguration newSpaceInitialAddress bitAnd: self spaceMaskToUse).
self oldSpaceMask: (memoryMapConfiguration oldSpaceInitialAddress bitAnd: self spaceMaskToUse).
self permSpaceMask: (memoryMapConfiguration permSpaceInitialAddress bitAnd: self spaceMaskToUse).
]
{ #category : #accessing }
VMMemoryMap >> codeZoneEnd [
^ codeZoneEnd
]
{ #category : #accessing }
VMMemoryMap >> codeZoneEnd: anInteger [
codeZoneEnd := anInteger
]
{ #category : #accessing }
VMMemoryMap >> codeZoneStart [
^ codeZoneStart
]
{ #category : #accessing }
VMMemoryMap >> codeZoneStart: anInteger [
codeZoneStart := anInteger
]
{ #category : #asserting }
VMMemoryMap >> doCheckMemoryMap [
self assert: (self isYoungObject: self newSpaceStart).
self assert: (self isYoungObject: self newSpaceEnd - BytesPerWord).
self assert: (self isOldObject: self newSpaceStart) not.
self assert: (self isOldObject: self newSpaceEnd - BytesPerWord) not.
self assert: (self isYoungObject: self newSpaceEnd).
self assert: (self isYoungObject: self oldSpaceStart) not.
self assert: (self isYoungObject: self oldSpaceEnd) not.
self assert: (self isOldObject: self oldSpaceStart).
self assert: (self isOldObject: self oldSpaceEnd - BytesPerWord).
self assert: (self isOldObject: self oldSpaceEnd).
]
{ #category : #allocating }
VMMemoryMap >> ensureAtLeastPermSpaceOf: requestedSize [
| diff |
requestedSize = 0 ifTrue: [ ^ true ].
self permSpaceStart = 0
ifTrue: [
self initialPermSpaceSize: requestedSize.
self allocatePermObjectsSpace.
"If the space is created empty, we need to ensure that there is a small object as the first. So we can iterate all objects in the space.
We need an small object to know that the first word is a header."
objectMemory
allocateSlotsInPermSpace: 0
format: 0
classIndex: objectMemory arrayClassIndexPun.
^ true. ].
diff := requestedSize - self permSpaceSize.
diff <= 0
ifTrue: [ ^ true ].
^ self extendPermObjectsSpaceBy: diff.
]
{ #category : #allocating }
VMMemoryMap >> extendPermObjectsSpaceBy: aSize [
| requestedSize extendedAddress |
requestedSize := self roundToAllocationSize: aSize.
extendedAddress := self
allocateMemory: requestedSize
BaseAddress: self permSpaceEnd.
extendedAddress ~= self permSpaceEnd
ifTrue: [ self logError: 'Could not extend perm space.'. ^ false ].
self permSpaceEnd: self permSpaceEnd + requestedSize.
^ true.
]
{ #category : #allocating }
VMMemoryMap >> extendPermObjectsSpaceMinimum: minimalSize [
| size |
size := 0.
[ size < minimalSize ]
whileTrue: [ size := size + (10 * 1024 * 1024) ].
self permSpaceStart = 0
ifTrue: [ ^ self ensureAtLeastPermSpaceOf: size ].
^ self extendPermObjectsSpaceBy: size
]
{ #category : #'as yet unclassified' }
VMMemoryMap >> fixedPermSpaceStart [
<api>
^ memoryMapConfiguration permSpaceInitialAddress
]
{ #category : #accessing }
VMMemoryMap >> getNewSpaceMask [
<api>
^ self newSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> getNewSpaceStart [
<api>
^ self newSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> getOldSpaceMask [
<api>
^ self oldSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> getOldSpaceStart [
<api>
^ self oldSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> getPermSpaceMask [
<api>
^ self permSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> getSpaceMaskToUse [
<api>
^ self spaceMaskToUse
]
{ #category : #simulation }
VMMemoryMap >> getpagesize [
<doNotGenerate>
^ 4096
]
{ #category : #accessing }
VMMemoryMap >> initialCodeZoneSize [
^ initialCodeZoneSize
]
{ #category : #accessing }
VMMemoryMap >> initialCodeZoneSize: aValue [
initialCodeZoneSize := aValue
]
{ #category : #accessing }
VMMemoryMap >> initialHeadroom [
^ initialHeadroom
]
{ #category : #accessing }
VMMemoryMap >> initialHeadroom: anInteger [
initialHeadroom := anInteger
]
{ #category : #accessing }
VMMemoryMap >> initialNewSpaceSize [
^ initialNewSpaceSize
]
{ #category : #accessing }
VMMemoryMap >> initialNewSpaceSize: anInteger [
initialNewSpaceSize := anInteger
]
{ #category : #accessing }
VMMemoryMap >> initialOldSpaceSize [
^ initialOldSpaceSize
]
{ #category : #accessing }
VMMemoryMap >> initialOldSpaceSize: anInteger [
initialOldSpaceSize := anInteger
]
{ #category : #accessing }
VMMemoryMap >> initialPermSpaceSize [
^ initialPermSpaceSize
]
{ #category : #accessing }
VMMemoryMap >> initialPermSpaceSize: anObject [
initialPermSpaceSize := anObject
]
{ #category : #initialization }
VMMemoryMap >> initializeMemoryMap [
initialCodeZoneSize := 0.
initialPermSpaceSize := 0.
minPermSpaceSize := 0.
permSpaceStart := 0.
permSpaceEnd := 0.
permSpaceMask := -1.
self simulationOnly: [
memoryMapConfiguration := (VMMemoryMapConfiguration forWordsize:
self class objectMemoryClass wordSize) new ].
self calculateMaskToUse.
]
{ #category : #private }
VMMemoryMap >> insufficientMemoryAvailableError [
<doNotGenerate>
self error.
]
{ #category : #'testing objects' }
VMMemoryMap >> isOldObject: anOop [
<api>
^ (anOop bitAnd: spaceMaskToUse) = oldSpaceMask
]
{ #category : #'testing objects' }
VMMemoryMap >> isPermanentObject: anOop [
<api>
^ anOop >= self fixedPermSpaceStart
]
{ #category : #'testing objects' }
VMMemoryMap >> isYoungObject: anOop [
<api>
^ (anOop bitAnd: spaceMaskToUse) = newSpaceMask and: [ anOop >= newSpaceStart ]
]
{ #category : #accessing }
VMMemoryMap >> memoryManager [
^ memoryManager
]
{ #category : #accessing }
VMMemoryMap >> memoryManager: anObject [
memoryManager := anObject
]
{ #category : #simulation }
VMMemoryMap >> memset: startAddress _: value _: size [
<doNotGenerate>
startAddress to: startAddress + size - 1 by: BytesPerWord do: [ :address |
memoryManager longAt: address put: value ]
]
{ #category : #accessing }
VMMemoryMap >> minPermSpaceSize [
^ minPermSpaceSize
]
{ #category : #accessing }
VMMemoryMap >> minPermSpaceSize: anObject [
minPermSpaceSize := anObject
]
{ #category : #accessing }
VMMemoryMap >> newSpaceEnd [
^ newSpaceEnd
]
{ #category : #accessing }
VMMemoryMap >> newSpaceEnd: anObject [
newSpaceEnd := anObject
]
{ #category : #accessing }
VMMemoryMap >> newSpaceMask [
^ newSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> newSpaceMask: anObject [
newSpaceMask := anObject
]
{ #category : #accessing }
VMMemoryMap >> newSpaceStart [
^ newSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> newSpaceStart: anObject [
newSpaceStart := anObject
]
{ #category : #accessing }
VMMemoryMap >> objectMemory: aValue [
<doNotGenerate>
objectMemory := aValue
]
{ #category : #accessing }
VMMemoryMap >> oldSpaceEnd [
^ oldSpaceEnd
]
{ #category : #accessing }
VMMemoryMap >> oldSpaceMask [
^ oldSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> oldSpaceMask: anObject [
oldSpaceMask := anObject
]
{ #category : #accessing }
VMMemoryMap >> oldSpaceStart [
^ oldSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> oldSpaceStart: anObject [
oldSpaceStart := anObject
]
{ #category : #accessing }
VMMemoryMap >> permSpaceEnd [
^ permSpaceEnd
]
{ #category : #accessing }
VMMemoryMap >> permSpaceEnd: anInteger [
permSpaceEnd := anInteger
]
{ #category : #accessing }
VMMemoryMap >> permSpaceMask [
^ permSpaceMask
]
{ #category : #accessing }
VMMemoryMap >> permSpaceMask: anObject [
permSpaceMask := anObject
]
{ #category : #accessing }
VMMemoryMap >> permSpaceSize [
^ self permSpaceEnd - self permSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> permSpaceStart [
^ permSpaceStart
]
{ #category : #accessing }
VMMemoryMap >> permSpaceStart: anInteger [
self assert: anInteger > oldSpaceEnd.
permSpaceStart := anInteger
]
{ #category : #utils }
VMMemoryMap >> roundToAllocationSize: anInteger [
<inline: false>
"First we round up to Page Size, and then we calculate the min with the platform granularity"
| pageSize pageMask rounded |
pageSize := self getpagesize.
pageMask := (pageSize - 1) bitInvert64.
rounded := anInteger bitAnd: pageMask.
rounded < anInteger ifTrue: [ rounded := rounded + pageSize ].
^ rounded max: self allocationGranularity
]
{ #category : #initialization }
VMMemoryMap >> setOldSpaceEnd: anInteger [
oldSpaceEnd := anInteger.
self assert: (permSpaceStart = 0 or: [anInteger < permSpaceStart]).
]
{ #category : #accessing }
VMMemoryMap >> spaceMaskToUse [
^ spaceMaskToUse
]
{ #category : #accessing }
VMMemoryMap >> spaceMaskToUse: anObject [
spaceMaskToUse := anObject
]
{ #category : #accessing }
VMMemoryMap >> stackPagesEnd [
^ stackPagesEnd
]
{ #category : #accessing }
VMMemoryMap >> stackPagesEnd: anObject [
stackPagesEnd := anObject
]
{ #category : #accessing }
VMMemoryMap >> stackPagesStart [
^ stackPagesStart
]
{ #category : #accessing }
VMMemoryMap >> stackPagesStart: anObject [
stackPagesStart := anObject
]
{ #category : #accessing }
VMMemoryMap >> startOfObjectMemory [
<api>
"The first object space in the memory map is the newSpace."
^ self newSpaceStart
]