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1416
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"{ Package: 'cg:private' }"
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Object subclass:#SnapShotImageMemory
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instanceVariableNames:'stream msb ptrSize intSize intTag spaceInfos symbolEntries
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globalEntries addrToObjectMapping'
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classVariableNames:''
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poolDictionaries:''
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category:'System-Support'
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!
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Object subclass:#SpaceInfo
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instanceVariableNames:'start end size flags imageBase'
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classVariableNames:''
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poolDictionaries:''
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privateIn:SnapShotImageMemory
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!
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Object variableSubclass:#ImageObject
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instanceVariableNames:'classRef size bits'
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classVariableNames:''
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poolDictionaries:''
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privateIn:SnapShotImageMemory
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!
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SnapShotImageMemory::ImageObject variableSubclass:#ImageClassObject
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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privateIn:SnapShotImageMemory
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!
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32 |
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!SnapShotImageMemory class methodsFor:'instance creation'!
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for:aFilename
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^ self new for:aFilename
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! !
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!SnapShotImageMemory class methodsFor:'private'!
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40 |
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isNilOOP:anOOP
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^ anOOP == 0
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!
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44 |
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isPointerOOP:anOOP
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^ (anOOP bitTest:1) not
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!
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isSmallIntegerOOP:anOOP
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^ anOOP bitTest:1
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! !
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!SnapShotImageMemory methodsFor:'accessing'!
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globalEntries
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"return the value of the instance variable 'globalEntries' (automatically generated)"
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^ globalEntries!
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globalEntries:something
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"set the value of the instance variable 'globalEntries' (automatically generated)"
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globalEntries := something.! !
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!SnapShotImageMemory methodsFor:'object access'!
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66 |
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fetchClassObjectAt:baseAddr
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|addr classPtr size bits o|
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o := addrToObjectMapping at:baseAddr ifAbsent:nil.
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o notNil ifTrue:[^ o].
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72 |
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addr := baseAddr.
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classPtr := self fetchPointerAt:addr.
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addr := addr + ptrSize.
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size := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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bits := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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o := ImageClassObject new:(size - intSize - intSize - intSize).
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o classRef:classPtr.
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o size:size.
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o bits:bits.
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1 to:size // intSize do:[:idx |
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o at:idx put:(self fetchUnboxedIntegerAt:addr).
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addr := addr + 1.
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].
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addrToObjectMapping at:baseAddr put:o.
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^ o
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!
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fetchObjectAt:baseAddr
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|addr classPtr classRef size bits o|
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o := addrToObjectMapping at:baseAddr ifAbsent:nil.
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o notNil ifTrue:[^ o].
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addr := baseAddr.
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classPtr := self fetchPointerAt:addr.
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addr := addr + ptrSize.
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size := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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bits := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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108 |
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(self class isPointerOOP:classPtr) ifFalse:[
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self halt
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].
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112 |
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classRef := self fetchClassObjectAt:classPtr.
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classRef isImageBehavior ifFalse:[
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self halt.
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].
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117 |
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o := ImageObject new:(size - intSize - intSize - intSize).
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o classRef:classRef.
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o size:size.
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o bits:bits.
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self halt.
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!
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125 |
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fetchObjectHeaderAt:baseAddr
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|addr class size bits|
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128 |
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addr := baseAddr.
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class := self fetchPointerAt:addr.
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addr := addr + ptrSize.
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size := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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bits := self fetchUnboxedIntegerAt:addr.
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addr := addr + ptrSize.
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136 |
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self halt.
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!
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139 |
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fetchPointerAt:addr
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^ self fetchUnboxedIntegerAt:addr
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!
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143 |
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fetchUnboxedIntegerAt:addr
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spaceInfos do:[:eachSpace |
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|ptr imgAddr|
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147 |
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addr >= eachSpace start ifTrue:[
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addr <= eachSpace end ifTrue:[
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imgAddr := eachSpace imageBase + (addr - eachSpace start).
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stream position:imgAddr.
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ptr := stream nextUnsignedLongMSB:msb.
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^ ptr
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]
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].
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].
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self halt:'image fetch error'.
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! !
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159 |
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!SnapShotImageMemory methodsFor:'private'!
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161 |
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allClassesDo:aBlock
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self allGlobalKeysDo:[:eachKey |
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|val|
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val := self at:eachKey.
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val isBehavior ifTrue:[
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aBlock value:val
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]
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].
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!
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172 |
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allGlobalKeysDo:aBlock
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globals isNil ifTrue:[
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self readHeader.
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self readGlobals.
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].
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!
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179 |
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for:aFilename
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stream := aFilename asFilename readStream binary.
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addrToObjectMapping := IdentityDictionary new.
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!
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184 |
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readGlobalEntries
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|refPointer theSymbol theValue|
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187 |
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globalEntries := OrderedCollection new.
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[
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refPointer := stream nextUnsignedLongMSB:msb.
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theSymbol := stream nextUnsignedLongMSB:msb.
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theValue := stream nextUnsignedLongMSB:msb.
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theSymbol ~~ 0
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] whileTrue:[
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globalEntries add:(theSymbol -> theValue).
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].
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globalEntries := globalEntries asArray
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!
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199 |
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readHeader
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"
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(self for:'stmeas.img') readHeader
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"
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204 |
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|order magic version timeStamp snapID last_util_addr hiText_addr flags
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lowData hiData charSlots charTableSlots fixMemStart fixMemEnd
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symMemStart symMemEnd vmDataAddr sharedMethodCode sharedBlockCode
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nContexts contextSpace nRegistered symbolsSeqNr nSpaces
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spaceFlags spaceBase spaceSize classNameSize|
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210 |
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stream next:256. "/ skip execCmd
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212 |
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msb := false.
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order := stream nextUnsignedLongMSB:msb.
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order = 16r076543210 ifTrue:[
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] ifFalse:[
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order = 16r01234567 ifTrue:[
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msb := true.
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] ifFalse:[
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self error:'unhandled byteorder'
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].
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].
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magic := (stream next:8) asString.
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magic ~= 'ST/X-IMG' ifTrue:[
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self error:'not an st/x image'
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].
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version := stream nextUnsignedLongMSB:msb.
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timeStamp := stream nextUnsignedLongMSB:msb.
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ptrSize := stream nextByte.
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ptrSize ~~ 4 ifTrue:[
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self error:'unhandled ptr format'
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].
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stream next:7. "/ filler
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intSize := stream nextUnsignedLongMSB:msb.
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intSize == 9 ifTrue:[
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intSize := 4.
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intTag := 1.
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] ifFalse:[
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self error:'unhandled int format'
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].
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241 |
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snapID := stream nextUnsignedLongMSB:msb.
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last_util_addr := stream next:intSize.
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hiText_addr := stream next:intSize.
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flags := stream next:intSize.
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stream next:8. "/ info, debug & filler
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247 |
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lowData := stream nextUnsignedLongMSB:msb.
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hiData := stream nextUnsignedLongMSB:msb.
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250 |
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charSlots := stream nextUnsignedLongMSB:msb.
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charTableSlots := stream nextUnsignedLongMSB:msb.
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253 |
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version >= 8 ifTrue:[
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fixMemStart := stream nextUnsignedLongMSB:msb.
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fixMemEnd := stream nextUnsignedLongMSB:msb.
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symMemStart := stream nextUnsignedLongMSB:msb.
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symMemEnd := stream nextUnsignedLongMSB:msb.
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vmDataAddr := stream nextUnsignedLongMSB:msb.
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].
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stream next:(128 * intSize). "/ skip sharedMethodCode ptrs
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stream next:(128 * intSize). "/ skip sharedBlockCode ptrs
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263 |
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nContexts := stream nextUnsignedLongMSB:msb.
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contextSpace := stream nextUnsignedLongMSB:msb.
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nRegistered := stream nextUnsignedLongMSB:msb.
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267 |
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version >= 8 ifTrue:[
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version >= 9 ifTrue:[
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symbolsSeqNr := stream nextUnsignedLongMSB:msb.
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stream next:(intSize * 31).
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] ifFalse:[
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stream next:(intSize * 32).
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]
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].
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276 |
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nSpaces := stream nextUnsignedLongMSB:msb.
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spaceInfos := (1 to:nSpaces) collect:[:idx | SpaceInfo new].
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279 |
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spaceBase := Array new:nSpaces.
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spaceSize := Array new:nSpaces.
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1 to:nSpaces do:[:i |
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(spaceInfos at:i) flags:(stream nextUnsignedLongMSB:msb).
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].
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nSpaces+1 to:32 do:[:i | stream nextUnsignedLongMSB:msb].
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286 |
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1 to:nSpaces do:[:i |
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(spaceInfos at:i) start:(stream nextUnsignedLongMSB:msb).
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].
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nSpaces+1 to:32 do:[:i | stream nextUnsignedLongMSB:msb].
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291 |
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1 to:nSpaces do:[:i |
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(spaceInfos at:i) size:(stream nextUnsignedLongMSB:msb).
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].
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nSpaces+1 to:32 do:[:i | stream nextUnsignedLongMSB:msb].
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296 |
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version >= 8 ifTrue:[
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stream position:(stream class zeroPosition + 4096).
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].
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300 |
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1 to:nSpaces do:[:i |
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(spaceInfos at:i) end:((spaceInfos at:i) start + (spaceInfos at:i) size - 1).
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].
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1 to:nSpaces do:[:i |
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305 |
(spaceInfos at:i) imageBase:(stream position).
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stream skip:((spaceInfos at:i) size).
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].
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308 |
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309 |
"/ registration
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310 |
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311 |
self readRegistrationEntries.
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312 |
self readSymbolEntries.
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313 |
self readGlobalEntries.
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314 |
self readUGlobalEntries.
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315 |
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316 |
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317 |
"/struct basicImageHeader {
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318 |
"/ char h_execCmd[256];
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319 |
"/
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320 |
"/ int h_orderWord;
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321 |
"/ char h_magic[8];
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322 |
"/ int h_version;
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323 |
"/ int h_timeStamp;
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324 |
"/ char h_ptrSize;
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325 |
"/ char h_filler1[7];
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326 |
"/ int h_intSize;
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327 |
"/ int h_snapID;
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328 |
"/ INT h_last_util_addr;
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329 |
"/ INT h_hiText_addr;
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330 |
"/ INT h_flags;
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331 |
"/ char h_infoPrinting;
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332 |
"/ char h_debugPrinting;
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333 |
"/ char h_filler2[6];
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334 |
"/
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335 |
"/ /*
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336 |
"/ * these are to verify compatibility of the image with
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337 |
"/ * myself ...
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338 |
"/ * this is now obsolete.
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339 |
"/ */
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340 |
"/ INT h_lowData, h_hiData;
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341 |
"/
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342 |
"/ /*
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343 |
"/ * base address of character- and characterTable slots
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344 |
"/ */
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345 |
"/ INT h_charSlots;
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346 |
"/ INT h_charTableSlots;
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347 |
"/
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348 |
"/#if HEADER_VERSION >= 8
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349 |
"/ /*
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350 |
"/ * the fixBase (VMDATA address)
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351 |
"/ */
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352 |
"/ INT h_fixMemStart;
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353 |
"/ INT h_fixMemEnd;
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354 |
"/ INT h_symMemStart;
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355 |
"/ INT h_symMemEnd;
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356 |
"/
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357 |
"/ INT h_vmDataAddr;
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358 |
"/#endif
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359 |
"/
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360 |
"/ INT h_sharedMethodCode[128];
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361 |
"/ INT h_sharedBlockCode[128];
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362 |
"/
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363 |
"/ /*
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364 |
"/ * space needed to restore contexts
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365 |
"/ */
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366 |
"/ INT h_nContexts;
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367 |
"/ INT h_contextSpace;
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368 |
"/
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369 |
"/ /*
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370 |
"/ * number of class registration info records
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371 |
"/ */
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372 |
"/ INT h_nRegistered;
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373 |
"/
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374 |
"/#if HEADER_VERSION >= 8
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375 |
"/ /*
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376 |
"/ * reserved slots, for future versions
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377 |
"/ * (can add additional info, without affecting position of following stuff)
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378 |
"/ * If you add slots, you MUST DECREMENT the fillcount.
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379 |
"/ */
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380 |
"/# if HEADER_VERSION >= 9
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381 |
"/ INT h_symbolsSeqNr;
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382 |
"/ INT h_reserved[31];
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383 |
"/# else
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384 |
"/ INT h_reserved[32];
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385 |
"/# endif
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386 |
"/#endif
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387 |
"/
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|
388 |
"/ /*
|
|
|
389 |
"/ * number of spaces, base and size of each
|
|
|
390 |
"/ */
|
|
|
391 |
"/ INT h_nSpaces;
|
|
|
392 |
"/ INT h_spaceFlags[MAXSPACES];
|
|
|
393 |
"/ INT h_spaceBase[MAXSPACES];
|
|
|
394 |
"/ INT h_spaceSize[MAXSPACES];
|
|
|
395 |
"/
|
|
|
396 |
"/ /*
|
|
|
397 |
"/ * here come nSpaces object spaces
|
|
|
398 |
"/ */
|
|
|
399 |
"/
|
|
|
400 |
"/ /*
|
|
|
401 |
"/ * here comes registration info
|
|
|
402 |
"/ */
|
|
|
403 |
"/
|
|
|
404 |
"/ /*
|
|
|
405 |
"/ * here come nSymbols symbolEntries
|
|
|
406 |
"/ * followed by a zero/zero entry
|
|
|
407 |
"/ */
|
|
|
408 |
"/
|
|
|
409 |
"/ /*
|
|
|
410 |
"/ * here come nGlobal globalEntries
|
|
|
411 |
"/ * followed by a zero/zero entry
|
|
|
412 |
"/ */
|
|
|
413 |
"/
|
|
|
414 |
"/ /*
|
|
|
415 |
"/ * here come nUnnamedGlobal globalEntries
|
|
|
416 |
"/ * followed by a zero/zero entry
|
|
|
417 |
"/ */
|
|
|
418 |
"/
|
|
|
419 |
"/ /*
|
|
|
420 |
"/ * here come stack contexts
|
|
|
421 |
"/ */
|
|
|
422 |
"/};
|
|
|
423 |
!
|
|
|
424 |
|
|
|
425 |
readRegistrationEntries
|
|
|
426 |
|classNameSize|
|
|
|
427 |
|
|
|
428 |
[
|
|
|
429 |
classNameSize := stream nextUnsignedLongMSB:msb.
|
|
|
430 |
classNameSize ~~ 0
|
|
|
431 |
] whileTrue:[
|
|
|
432 |
|className flags moduleTimestamp signature nMethods nBlocks oldLitRefs nLitRefs
|
|
|
433 |
oldConstTable nConsts|
|
|
|
434 |
|
|
|
435 |
className := (stream next:classNameSize) asString.
|
|
|
436 |
stream next. "/ 0-byte
|
|
|
437 |
flags := stream nextUnsignedLongMSB:msb.
|
|
|
438 |
moduleTimestamp := stream nextUnsignedLongMSB:msb.
|
|
|
439 |
signature := stream nextUnsignedLongMSB:msb.
|
|
|
440 |
nMethods := stream nextUnsignedLongMSB:msb.
|
|
|
441 |
nMethods timesRepeat:[ stream nextUnsignedLongMSB:msb ].
|
|
|
442 |
nBlocks := stream nextUnsignedLongMSB:msb.
|
|
|
443 |
nBlocks timesRepeat:[ stream nextUnsignedLongMSB:msb ].
|
|
|
444 |
oldLitRefs := stream nextUnsignedLongMSB:msb.
|
|
|
445 |
nLitRefs := stream nextUnsignedLongMSB:msb.
|
|
|
446 |
nLitRefs timesRepeat:[ stream nextUnsignedLongMSB:msb ].
|
|
|
447 |
stream nextUnsignedLongMSB:msb. "/ 0-litRef
|
|
|
448 |
oldConstTable := stream nextUnsignedLongMSB:msb.
|
|
|
449 |
nConsts := stream nextUnsignedLongMSB:msb.
|
|
|
450 |
nConsts timesRepeat:[ stream nextUnsignedLongMSB:msb ].
|
|
|
451 |
|
|
|
452 |
Transcript showCR:className.
|
|
|
453 |
].
|
|
|
454 |
!
|
|
|
455 |
|
|
|
456 |
readSymbolEntries
|
|
|
457 |
|refPointer theSymbol|
|
|
|
458 |
|
|
|
459 |
symbolEntries := OrderedCollection new.
|
|
|
460 |
|
|
|
461 |
[
|
|
|
462 |
refPointer := stream nextUnsignedLongMSB:msb.
|
|
|
463 |
theSymbol := stream nextUnsignedLongMSB:msb.
|
|
|
464 |
|
|
|
465 |
theSymbol ~~ 0
|
|
|
466 |
] whileTrue:[
|
|
|
467 |
symbolEntries add:(theSymbol -> refPointer).
|
|
|
468 |
].
|
|
|
469 |
symbolEntries := symbolEntries asArray
|
|
|
470 |
!
|
|
|
471 |
|
|
|
472 |
readUGlobalEntries
|
|
|
473 |
|refPointer theValue|
|
|
|
474 |
|
|
|
475 |
[
|
|
|
476 |
refPointer := stream nextUnsignedLongMSB:msb.
|
|
|
477 |
theValue := stream nextUnsignedLongMSB:msb.
|
|
|
478 |
refPointer ~~ 0
|
|
|
479 |
] whileTrue
|
|
|
480 |
! !
|
|
|
481 |
|
|
|
482 |
!SnapShotImageMemory::SpaceInfo methodsFor:'accessing'!
|
|
|
483 |
|
|
|
484 |
end
|
|
|
485 |
"return the value of the instance variable 'end' (automatically generated)"
|
|
|
486 |
|
|
|
487 |
^ end!
|
|
|
488 |
|
|
|
489 |
end:something
|
|
|
490 |
"set the value of the instance variable 'end' (automatically generated)"
|
|
|
491 |
|
|
|
492 |
end := something.!
|
|
|
493 |
|
|
|
494 |
flags
|
|
|
495 |
"return the value of the instance variable 'flags' (automatically generated)"
|
|
|
496 |
|
|
|
497 |
^ flags!
|
|
|
498 |
|
|
|
499 |
flags:something
|
|
|
500 |
"set the value of the instance variable 'flags' (automatically generated)"
|
|
|
501 |
|
|
|
502 |
flags := something.!
|
|
|
503 |
|
|
|
504 |
imageBase
|
|
|
505 |
"return the value of the instance variable 'imageBase' (automatically generated)"
|
|
|
506 |
|
|
|
507 |
^ imageBase!
|
|
|
508 |
|
|
|
509 |
imageBase:something
|
|
|
510 |
"set the value of the instance variable 'imageBase' (automatically generated)"
|
|
|
511 |
|
|
|
512 |
imageBase := something.!
|
|
|
513 |
|
|
|
514 |
size
|
|
|
515 |
"return the value of the instance variable 'size' (automatically generated)"
|
|
|
516 |
|
|
|
517 |
^ size!
|
|
|
518 |
|
|
|
519 |
size:something
|
|
|
520 |
"set the value of the instance variable 'size' (automatically generated)"
|
|
|
521 |
|
|
|
522 |
size := something.!
|
|
|
523 |
|
|
|
524 |
start
|
|
|
525 |
"return the value of the instance variable 'start' (automatically generated)"
|
|
|
526 |
|
|
|
527 |
^ start!
|
|
|
528 |
|
|
|
529 |
start:something
|
|
|
530 |
"set the value of the instance variable 'start' (automatically generated)"
|
|
|
531 |
|
|
|
532 |
start := something.! !
|
|
|
533 |
|
|
|
534 |
!SnapShotImageMemory::ImageObject methodsFor:'accessing'!
|
|
|
535 |
|
|
|
536 |
bits
|
|
|
537 |
"return the value of the instance variable 'bits' (automatically generated)"
|
|
|
538 |
|
|
|
539 |
^ bits!
|
|
|
540 |
|
|
|
541 |
bits:something
|
|
|
542 |
"set the value of the instance variable 'bits' (automatically generated)"
|
|
|
543 |
|
|
|
544 |
bits := something.!
|
|
|
545 |
|
|
|
546 |
classRef
|
|
|
547 |
"return the value of the instance variable 'classRef' (automatically generated)"
|
|
|
548 |
|
|
|
549 |
^ classRef!
|
|
|
550 |
|
|
|
551 |
classRef:something
|
|
|
552 |
"set the value of the instance variable 'classRef' (automatically generated)"
|
|
|
553 |
|
|
|
554 |
classRef := something.!
|
|
|
555 |
|
|
|
556 |
size
|
|
|
557 |
"return the value of the instance variable 'size' (automatically generated)"
|
|
|
558 |
|
|
|
559 |
^ size!
|
|
|
560 |
|
|
|
561 |
size:something
|
|
|
562 |
"set the value of the instance variable 'size' (automatically generated)"
|
|
|
563 |
|
|
|
564 |
size := something.! !
|
|
|
565 |
|
|
|
566 |
!SnapShotImageMemory::ImageObject methodsFor:'queries'!
|
|
|
567 |
|
|
|
568 |
isImageBehavior
|
|
|
569 |
|flags|
|
|
|
570 |
|
|
|
571 |
flags := self flagsSlot.
|
|
|
572 |
|
|
|
573 |
(SnapShotImageMemory isSmallIntegerOOP:flags) ifFalse:[
|
|
|
574 |
self halt
|
|
|
575 |
].
|
|
|
576 |
flags := flags bitShift:-1.
|
|
|
577 |
^ flags bitTest:Behavior flagBehavior
|
|
|
578 |
!
|
|
|
579 |
|
|
|
580 |
isImageBytes
|
|
|
581 |
self halt.
|
|
|
582 |
!
|
|
|
583 |
|
|
|
584 |
isImageString
|
|
|
585 |
self halt.
|
|
|
586 |
!
|
|
|
587 |
|
|
|
588 |
isImageSymbol
|
|
|
589 |
self halt.
|
|
|
590 |
! !
|
|
|
591 |
|
|
|
592 |
!SnapShotImageMemory::ImageClassObject methodsFor:'accessing - slots'!
|
|
|
593 |
|
|
|
594 |
categorySlot
|
|
|
595 |
^ self at:8
|
|
|
596 |
!
|
|
|
597 |
|
|
|
598 |
classFilenameSlot
|
|
|
599 |
^ self at:12
|
|
|
600 |
!
|
|
|
601 |
|
|
|
602 |
classVarsSlot
|
|
|
603 |
^ self at:9
|
|
|
604 |
!
|
|
|
605 |
|
|
|
606 |
commentSlot
|
|
|
607 |
^ self at:10
|
|
|
608 |
!
|
|
|
609 |
|
|
|
610 |
flagsSlot
|
|
|
611 |
^ self at:2
|
|
|
612 |
!
|
|
|
613 |
|
|
|
614 |
flagsValue
|
|
|
615 |
|flags|
|
|
|
616 |
|
|
|
617 |
flags := self flagsSlot.
|
|
|
618 |
|
|
|
619 |
(SnapShotImageMemory isSmallIntegerOOP:flags) ifFalse:[
|
|
|
620 |
self halt
|
|
|
621 |
].
|
|
|
622 |
^ flags bitShift:-1.
|
|
|
623 |
!
|
|
|
624 |
|
|
|
625 |
instSizeSlot
|
|
|
626 |
^ self at:5
|
|
|
627 |
!
|
|
|
628 |
|
|
|
629 |
instVarsSlot
|
|
|
630 |
^ self at:6
|
|
|
631 |
!
|
|
|
632 |
|
|
|
633 |
methodDictionarySlot
|
|
|
634 |
^ self at:3
|
|
|
635 |
!
|
|
|
636 |
|
|
|
637 |
nameSlot
|
|
|
638 |
^ self at:7
|
|
|
639 |
!
|
|
|
640 |
|
|
|
641 |
packageSlot
|
|
|
642 |
^ self at:13
|
|
|
643 |
!
|
|
|
644 |
|
|
|
645 |
revisionSlot
|
|
|
646 |
^ self at:14
|
|
|
647 |
!
|
|
|
648 |
|
|
|
649 |
superClassSlot
|
|
|
650 |
^ self at:1
|
|
|
651 |
! !
|
|
|
652 |
|
|
|
653 |
!SnapShotImageMemory class methodsFor:'documentation'!
|
|
|
654 |
|
|
|
655 |
version
|
|
|
656 |
^ '$Header$'
|
|
|
657 |
! !
|