Packages March 2024

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The Trunk: System-mt.1452.mcz
by commits＠source.squeak.org 28 Mar '24

28 Mar '24

Marcel Taeumel uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-mt.1452.mcz ==================== Summary ==================== Name: System-mt.1452 Author: mt Time: 28 March 2024, 9:59:08.460064 am UUID: c4dd53f6-cf69-7b42-b554-f4e6320216cf Ancestors: System-cmm.1451 When using high-DPI screens, make enough room for the emergency evaluator. =============== Diff against System-cmm.1451 =============== Item was changed: ----- Method: Transcripter class>>emergencyEvaluator (in category 'utilities') ----- emergencyEvaluator + (Transcripter newInFrame: (0@0 corner: 320 px @ 200 px)) - (Transcripter newInFrame: (0@0 corner: 320@200)) show: 'Type ''revert'' to revert your last method change. Type ''exit'' to exit the emergency evaluator.'; readEvalPrint!

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The Trunk: ReleaseBuilder-mt.247.mcz
by commits＠source.squeak.org 26 Mar '24

26 Mar '24

Marcel Taeumel uploaded a new version of ReleaseBuilder to project The Trunk: http://source.squeak.org/trunk/ReleaseBuilder-mt.247.mcz ==================== Summary ==================== Name: ReleaseBuilder-mt.247 Author: mt Time: 26 March 2024, 10:15:40.484051 am UUID: 6b05e554-d6ae-1046-adab-318f230b240a Ancestors: ReleaseBuilder-mt.246 Fix comment. Both mt.247 and mt.246 complement Kernel-cmm.1562 =============== Diff against ReleaseBuilder-mt.246 =============== Item was changed: ----- Method: ReleaseBuilder class>>prepareProcesses (in category 'preparing') ----- prepareProcesses "Re-start running processes if necessary. Call this at late as possible in the release process. Only required to processes that are not reset at image #startUp." Delay startTimerEventLoop. + Smalltalk processPreemptionYields: false. "avoid accidental round-robin; make users' Morphic-related workspace scripts/code more robust if forked at UI priority"! - Smalltalk processPreemptionYields: false. "avoid accidental round-robin; make users' Morphic-related workspace scripts/code more robust if forked at lower priority"!

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The Trunk: ReleaseBuilder-mt.246.mcz
by commits＠source.squeak.org 26 Mar '24

26 Mar '24

Marcel Taeumel uploaded a new version of ReleaseBuilder to project The Trunk: http://source.squeak.org/trunk/ReleaseBuilder-mt.246.mcz ==================== Summary ==================== Name: ReleaseBuilder-mt.246 Author: mt Time: 26 March 2024, 10:11:12.181433 am UUID: 0b3b4f34-11f3-f34f-a0a4-72ec011dbfe0 Ancestors: ReleaseBuilder-dtl.245 For new images, by default, ensure inadvertent yield outside a process' own control. =============== Diff against ReleaseBuilder-dtl.245 =============== Item was changed: ----- Method: ReleaseBuilder class>>prepareProcesses (in category 'preparing') ----- prepareProcesses "Re-start running processes if necessary. Call this at late as possible in the release process. Only required to processes that are not reset at image #startUp." + Delay startTimerEventLoop. + Smalltalk processPreemptionYields: false. "avoid accidental round-robin; make users' Morphic-related workspace scripts/code more robust if forked at lower priority"! - Delay startTimerEventLoop.!

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The Trunk: Kernel-cmm.1563.mcz
by commits＠source.squeak.org 26 Mar '24

26 Mar '24

Chris Muller uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-cmm.1563.mcz ==================== Summary ==================== Name: Kernel-cmm.1563 Author: cmm Time: 25 March 2024, 7:38:47.237222 pm UUID: 6986b006-23f1-4c46-b47a-7417539e6902 Ancestors: Kernel-cmm.1562 - Preserve "Map CONTROL keys to COMMAND keys" preference across image restarts. - With Tim's permission, removed LargePositiveInteger>>#asByteArray. =============== Diff against Kernel-cmm.1562 =============== Item was changed: ----- Method: EventSensor class>>startUp: (in category 'system startup') ----- startUp: resuming + resuming ifTrue: + [ Smalltalk platformName ~= Smalltalk previousPlatformName + ifTrue: + [Smalltalk platformName = 'Mac OS' + ifTrue: [ + self mapAltKeysToOptionKeys: false. + self mapControlKeysToCommandKeys: false] + ifFalse: [ + self mapAltKeysToOptionKeys: true. + self mapControlKeysToCommandKeys: true]. + self installVirtualKeyTable] ]. - resuming ifTrue: [ - Smalltalk platformName = 'Mac OS' - ifTrue: [ - self mapAltKeysToOptionKeys: false. - self mapControlKeysToCommandKeys: false] - ifFalse: [ - self mapAltKeysToOptionKeys: true. - self mapControlKeysToCommandKeys: true]. - self installVirtualKeyTable ]. + self default startUp! - self default startUp.! Item was removed: - ----- Method: LargePositiveInteger>>asByteArray (in category 'converting') ----- - asByteArray - - ^self as: ByteArray!

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The Trunk: System-cmm.1451.mcz
by commits＠source.squeak.org 26 Mar '24

26 Mar '24

Chris Muller uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-cmm.1451.mcz ==================== Summary ==================== Name: System-cmm.1451 Author: cmm Time: 25 March 2024, 7:37:55.127523 pm UUID: 29d336c2-1aa8-40f1-914f-7b2b23873523 Ancestors: System-eem.1450 Added Smalltalk>>#previousPlatformName to support detecting and responding to platform changes between image restarts. =============== Diff against System-eem.1450 =============== Item was changed: Object subclass: #SmalltalkImage instanceVariableNames: 'globals' + classVariableNames: 'EndianCache LastImageName LastQuitLogPosition LastStats PlatformNameCache PreviousPlatformName ShutDownList SourceFileVersionString StartUpList StartupStamp VMMakerVersion WordSize' - classVariableNames: 'EndianCache LastImageName LastQuitLogPosition LastStats PlatformNameCache ShutDownList SourceFileVersionString StartUpList StartupStamp VMMakerVersion WordSize' poolDictionaries: '' category: 'System-Support'! !SmalltalkImage commentStamp: 'dtl 3/6/2010 14:00' prior: 0! I represent the current image and runtime environment, including system organization, the virtual machine, object memory, plugins and source files. My instance variable #globals is a reference to the system dictionary of global variables and class names. My singleton instance is called Smalltalk.! Item was changed: ----- Method: SmalltalkImage>>cleanUpSystemAttributeCaches (in category 'housekeeping') ----- cleanUpSystemAttributeCaches "Reset platform-specific values. This MUST BE called directly before the image is snapshotted. Note that this can't safely be done on start-up because Smalltalk is too late in the start-up sequence. See commentary in #getSystemAttribute:." self flag: #discuss. "mt: Such caches might better be managed by the VM itself. A primitive-based cache protocol could help. On a fresh (VM) start-up, those values would then be nil (or uninitialized) automatically." + PreviousPlatformName := PlatformNameCache. - EndianCache := WordSize := PlatformNameCache := nil.! Item was added: + ----- Method: SmalltalkImage>>previousPlatformName (in category 'os') ----- + previousPlatformName + "Answer the name of the previous OS platform that ran this image, useful for detecting and responding to platform changes." + ^ PreviousPlatformName ifNil: [ 'unknown' ]! Item was changed: ----- Method: SmalltalkImage>>snapshot:andQuit:withExitCode:embedded: (in category 'snapshot and quit') ----- snapshot: save andQuit: quit withExitCode: exitCode embedded: embeddedFlag "Mark the changes file and close all files as part of #processShutdownList. If save is true, save the current state of this Smalltalk in the image file. If quit is true, then exit to the outer OS shell. If exitCode is not nil, then use it as exit code. The latter part of this method runs when resuming a previously saved image. This resume logic checks for a document file to process when starting up." | resuming msg | Object flushDependents. Object flushEvents. (SourceFiles at: 2) ifNotNil:[ msg := String streamContents: [ :s | s nextPutAll: '----'; nextPutAll: (save ifTrue: [ quit ifTrue: [ 'QUIT' ] ifFalse: [ 'SNAPSHOT' ] ] ifFalse: [quit ifTrue: [ 'QUIT/NOSAVE' ] ifFalse: [ 'NOP' ]]); nextPutAll: '----'; print: Date dateAndTimeNow; space; nextPutAll: (FileDirectory default localNameFor: self imageName); nextPutAll: ' priorSource: '; print: LastQuitLogPosition ]. self assureStartupStampLogged. save ifTrue: [ LastQuitLogPosition := (SourceFiles at: 2) setToEnd; position ]. self logChange: msg. Transcript cr; show: msg]. self processShutDownList: quit. Cursor write show. + save ifTrue: + [self cleanUpSystemAttributeCaches. - save ifTrue: [ - self cleanUpSystemAttributeCaches. resuming := embeddedFlag ifTrue: [self snapshotEmbeddedPrimitive] + ifFalse: + [PlatformNameCache := nil. + self snapshotPrimitive]] "<-- PC frozen here on image file" - ifFalse: [self snapshotPrimitive]] "<-- PC frozen here on image file" ifFalse: [resuming := false]. (quit and: [resuming == false]) ifTrue: [exitCode ifNil: [ self quitPrimitive ] ifNotNil: [ self quitPrimitive: exitCode ] ]. Cursor normal show. self startUpPostSnapshot: resuming == true. Project current wakeUpTopWindow. "Now it's time to raise an error" resuming == nil ifTrue: [self error:'Failed to write image file (disk full?)']. ^ resuming!

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The Trunk: Kernel-cmm.1562.mcz
by commits＠source.squeak.org 24 Mar '24

24 Mar '24

Chris Muller uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-cmm.1562.mcz ==================== Summary ==================== Name: Kernel-cmm.1562 Author: cmm Time: 24 March 2024, 6:27:34.572036 pm UUID: 886bf6b9-a56b-4131-accf-3867a3836658 Ancestors: Kernel-ct.1561 Allow processPreemptionYields: to persist across image saves, as purported by its comment. =============== Diff against Kernel-ct.1561 =============== Item was changed: ----- Method: ProcessorScheduler class>>startUp: (in category 'background process') ----- startUp: resuming - Smalltalk processPreemptionYields ifTrue: [ - Smalltalk processPreemptionYields: false]. - resuming ifTrue: [ Smalltalk installLowSpaceWatcher. self installIdleProcess].!

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The Trunk: System-eem.1450.mcz
by commits＠source.squeak.org 22 Mar '24

22 Mar '24

Eliot Miranda uploaded a new version of System to project The Trunk: http://source.squeak.org/trunk/System-eem.1450.mcz ==================== Summary ==================== Name: System-eem.1450 Author: eem Time: 21 March 2024, 9:59:04.230117 pm UUID: 8a307197-4ed6-4876-a204-4922ff405e1d Ancestors: System-cmm.1449 Eliminate hyper-active low space notification by not notifying if after a GC there is at least 1/5 more free space than the low space threshold, in the case where there are no memoryHogs. Document parameters 50 & 51 in vmParameterAt:[put:]. Improve the comment for snapshotPrimitive. =============== Diff against System-cmm.1449 =============== Item was changed: ----- Method: LowSpaceWatcher>>notifyMemoryHogs (in category 'process steps') ----- notifyMemoryHogs + "Try to clean up memory hogs. Answer if sufficient memory was released." - "Try to clean up memory hogs. Answer true if sufficient memory was released." | free | + free := Smalltalk bytesLeft. + self memoryHogs isEmpty ifTrue: + [^free >= (Smalltalk lowSpaceThreshold * 5 // 4)]. + self memoryHogs do: + [ :hog | hog freeSomeSpace ]. + ^Smalltalk bytesLeft > free! - self memoryHogs isEmpty - ifTrue: [ ^ false ] - ifFalse: [ free := Smalltalk bytesLeft. - self memoryHogs - do: [ :hog | hog freeSomeSpace ]. - ^ Smalltalk bytesLeft > free ] - - ! Item was changed: ----- Method: SmalltalkImage>>snapshotPrimitive (in category 'snapshot and quit') ----- snapshotPrimitive + "Primitive. Write the current state of the object memory on a file in the same format + as the Smalltalk-80 release. Return normally after writing the file, and answer false. + The file can later be resumed, returning you to this exact state except for answering + true. Essential. See Object documentation whatIsAPrimitive." - "Primitive. Write the current state of the object memory on a file in the - same format as the Smalltalk-80 release. The file can later be resumed, - returning you to this exact state. Return normally after writing the file. - Essential. See Object documentation whatIsAPrimitive." <primitive: 97> ^nil "indicates error writing image file"! Item was changed: ----- Method: SmalltalkImage>>vmParameterAt: (in category 'vm parameters') ----- vmParameterAt: parameterIndex "parameterIndex is a positive integer corresponding to one of the VM's internal parameter/metric registers. Answer with the current value of that register. Fail if parameterIndex is invalid or has no corresponding register. Coerce positive integers for parameterIndices unknown to teh VM to nil. VM parameters are numbered as follows: 1 byte size of old-space (read-only) 2 byte size of young-space (read-only) 3 byte size of object memory (read-only) 4 allocationCount (read-only; nil in Cog VMs) 5 allocations between GCs (read-write; nil in Cog VMs) 6 survivor count tenuring threshold (read-write) 7 full GCs since startup (read-only) 8 total milliseconds in full GCs since startup (read-only) 9 incremental GCs since startup (read-only; scavenging GCs on Spur) 10 total milliseconds in incremental/scavenging GCs since startup (read-only) 11 tenures of surving objects since startup/last write (read-write) 12 event trace mask; if 1 << eventType is set in the mask then event received by primGetNextEvent: will be printed to stderr. 13 VM ticker start microseconds (Croquet/QwaqVM only) 14 VM ticker count (Croquet/QwaqVM only) 15 VM ticker call count (Croquet/QwaqVM only) 16 total microseconds in idle since startup 17 proportion of code zone available for use (Sista VMs only; read-write) 18 total milliseconds in full GC compaction since startup (a portion of parameter 8) 19 scavenge threshold; the effective size of eden 20 utc microseconds at VM start-up (actually at time initialization, which precedes image load) (newer Cog VMs only). 21 root (remembered) table size (read-only) 22 root (remembered) table overflows since startup (read-only) 23 bytes of extra memory to reserve for VM buffers, plugins, etc. 24 memory threshold above which to shrink object memory (read-write) 25 ammount to grow by when growing object memory (read-write) 26 interruptChecksEveryNms - force an ioProcessEvents every N milliseconds (read-write) 27 number of times mark loop iterated for current IGC/FGC (read-only) includes ALL marking 28 number of times sweep loop iterated for current IGC/FGC (read-only) 29 number of times make forward loop iterated for current IGC/FGC (read-only) 30 number of times compact move loop iterated for current IGC/FGC (read-only) 31 number of grow memory requests (read-only) 32 number of shrink memory requests (read-only) 33 number of root table entries used for current IGC/FGC (read-only) 34 bytes allocated in total since start-up or reset (read-write) 35 number of survivor objects after current IGC/FGC (read-only) 36 millisecond clock when current IGC/FGC completed (read-only) 37 number of marked objects for Roots of the world, not including Root Table entries for current IGC/FGC (read-only) 38 milliseconds taken by current IGC (read-only) 39 Number of finalization signals for Weak Objects pending when current IGC/FGC completed (read-only) 40 BytesPerWord for this image 41 imageFormatVersion for the VM 42 number of stack pages in use (Cog Stack VM only, otherwise nil) 43 desired number of stack pages (stored in image file header, max 65535; Cog VMs only, otherwise nil) 44 size of eden, in bytes (Cog VMs only, otherwise nil) 45 desired size of eden, in bytes (stored in image file header; Cog VMs only, otherwise nil) 46 size of machine code zone, in bytes (stored in image file header; Cog JIT VM only, otherwise nil) 47 desired size of machine code zone, in bytes (applies at startup only, stored in image file header; Cog JIT VM only) 48 various properties stored in the image header (that instruct the VM) as an integer encoding an array of bit flags. Bit 0: in a threaded VM, if set, tells the VM that the image's Process class has threadAffinity as its 5th inst var (after nextLink, suspendedContext, priority & myList) Bit 1: in Cog JIT VMs, if set, asks the VM to set the flag bit in interpreted methods Bit 2: if set, preempting a process puts it to the head of its run queue, not the back, i.e. preempting a process by a higher priority one will not cause the preempted process to yield to others at the same priority. Bit 3: (unassigned) Bit 4: in a Spur VM, if set, causes weaklings and ephemerons to be queued individually for finalization Bit 5: if set, implies wheel events will be delivered as such and not mapped to arrow key events Bit 6: if set, implies arithmetic primitives will fail if given arguments of different types (float vs int) Bit 7: if set, causes times delivered from file primitives to be in UTC rather than local time Bit 8: if set, implies the VM will not upscale the display on high DPI monitors; older VMs did this by default. 49 the size of the external semaphore table (read-write; Cog VMs only) + 50 the maximum number of literals in a method for it to be considered for JIT compilation (Cog JIT VM only, otherwise nil) + 51 a set of bit flags describing the state of the image load (read-only; later Cog VMs only; otherwise nil) + Bit 0: image needed swizzling on load + Bit 1: image is embedded (e.g. as a resource) in this VM - 50-51 reserved for VM parameters that persist in the image (such as eden above) 52 root (remembered) table maximum size (read-only) + 53 the number of oldSpace segments (read-only; Spur only, otherwise nil) - 53 the number of oldSpace segments (Spur only, otherwise nil) 54 total size of free old space (Spur only, otherwise nil) 55 ratio of growth and image size at or above which a GC will be performed post scavenge (Spur only, otherwise nil) 56 number of process switches since startup (read-only) 57 number of ioProcessEvents calls since startup (read-only) 58 number of forceInterruptCheck (Cog VMs) or quickCheckInterruptCalls (non-Cog VMs) calls since startup (read-only) 59 number of check event calls since startup (read-only) 60 number of stack page overflows since startup (read-only; Cog VMs only) 61 number of stack page divorces since startup (read-only; Cog VMs only) 62 number of machine code zone compactions since startup (read-only; Cog VMs only) 63 milliseconds taken by machine code zone compactions since startup (read-only; Cog VMs only) 64 current number of machine code methods (read-only; Cog VMs only) 65 In newer Cog VMs a set of flags describing VM features, if non-zero bit 0 implies multiple bytecode set support; if non-zero bit 1 implies read-only object support; if non-zero bit 2 implies the VM suffers from using an ITIMER heartbeat (if 0 it has a thread that provides the heartbeat) (read-only; Cog VMs only; nil in older Cog VMs, a boolean answering multiple bytecode support in not so old Cog VMs) if non-zero bit 3 implies the VM supports cross-platform BIT_IDENTICAL_FLOATING_POINT arithmetic if non-zero bit 4 implies the VM can catch exceptions in FFI calls and answer them as primitive failures if non-zero bit 5 implies the VM's suspend primitive backs up the process to before the wait if it was waiting on a condition variable 66 the byte size of a stack page in the stack zone (read-only; Cog VMs only) 67 the maximum allowed size of old space in bytes, 0 implies no internal limit (Spur VMs only). 68 the average number of live stack pages when scanned by GC (at scavenge/gc/become et al) 69 the maximum number of live stack pages when scanned by GC (at scavenge/gc/become et al) 70 the value of VM_PROXY_MAJOR (the interpreterProxy major version number) 71 the value of VM_PROXY_MINOR (the interpreterProxy minor version number) 72 total milliseconds in full GCs Mark phase since startup (read-only) 73 total milliseconds in full GCs Sweep phase since startup (read-only, can be 0 depending on compactors) 74 maximum pause time due to segment allocation 75 whether arithmetic primitives will do mixed type arithmetic; if false they fail for different receiver and argument types 76 the minimum unused headroom in all stack pages; Cog VMs only" <primitive: 254> (parameterIndex isInteger and: [parameterIndex > 0]) ifTrue: [^nil]. self primitiveFailed! Item was changed: ----- Method: SmalltalkImage>>vmParameterAt:put: (in category 'vm parameters') ----- vmParameterAt: parameterIndex put: newValue "parameterIndex is a positive integer corresponding to one of the VM's internal parameter/metric registers. Store newValue (a positive integer) into that register and answer with the previous value that was stored there. Fail if newValue is out of range, if parameterIndex has no corresponding register, or if the corresponding register is read-only. As of late 2020 the parameters which can be set are 5 allocations between GCs (read-write; nil in Cog VMs) 6 survivor count tenuring threshold (read-write) 11 tenures of surving objects since startup/last write (read-write) 12 event trace mask; if 1 << eventType is set in the mask then event received by primGetNextEvent: will be printed to stderr. 17 proportion of code zone available for use (Sista VMs only) 23 bytes of extra memory to reserve for VM buffers, plugins, etc. 24 memory threshold above whichto shrink object memory (read-write) 25 memory headroom when growing object memory (read-write) 26 interruptChecksEveryNms - force an ioProcessEvents every N milliseconds (read-write) 34 bytes allocated in total since start-up or reset (read-write) 43 desired number of stack pages (stored in image file header, max 65535; Cog VMs only, otherwise nil) 45 desired size of eden, in bytes (stored in image file header; Cog VMs only, otherwise nil) 47 desired size of machine code zone, in bytes (applies at startup only, stored in image file header; Cog JIT VM only) 48 various properties of the Cog VM as an integer encoding an array of bit flags; see commentary in #vmParameterAt: 49 the size of the external semaphore table (read-write; Cog VMs only) + 50 the maximum number of literals in a method for it to be considered for JIT compilation (Cog JIT VM only, otherwise nil) 55 ratio of growth and image size at or above which a GC will be performed post scavenge (Spur only, otherwise nil) 67 the maximum allowed size of old space in bytes, 0 implies no internal limit (Spur only). 68 the average number of live stack pages when scanned by GC (at scavenge/gc/become et al) 69 the maximum number of live stack pages when scanned by GC (at scavenge/gc/become et al) 74 maximum pause time due to segment allocation 75 whether arithmetic primitives will do mixed type arithmetic; if false they fail for different receiver and argument types" <primitive: 254> self primitiveFailed!

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The Trunk: Kernel-jar.1550.mcz
by commits＠source.squeak.org 05 Mar '24

05 Mar '24

Christoph Thiede uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-jar.1550.mcz ==================== Summary ==================== Name: Kernel-jar.1550 Author: jar Time: 9 January 2024, 8:36:02.1473 pm UUID: f53ab664-7278-8944-8a7c-90660a08f773 Ancestors: Kernel-ct.1549 fix and rename private method #stepToCalleeOrNil to #stepToSenderOrNil if you debug and do step through to ^2 and then step over in [^2] ensure: [] the debugger incorrectly stops at #resume:through:. The reason is #resume:through: sends a block as an argument and #stepToCalleeOrNil is just not right for this situation: the purpose of the #stepToSenderOrNil method is to remove the top context from the stack by stepping until the context returns. This means we're not interested in detecting stack increases provided by #stepToCalleeOrNil. It is only used as a helper method in runUntilErrorOrReturnFrom: =============== Diff against Kernel-ct.1549 =============== Item was changed: ----- Method: Context>>runUntilErrorOrReturnFrom: (in category 'controlling') ----- runUntilErrorOrReturnFrom: aSender "ASSUMES aSender is a sender of self. Execute self's stack until aSender returns or an unhandled exception is raised. Return a pair containing the new top context and a possibly nil exception. The exception is not nil if it was raised before aSender returned and it was not handled. The exception is returned rather than openning the debugger, giving the caller the choice of how to handle it." "Self is run by jumping directly to it (the active process abandons thisContext and executes self). However, before jumping to self we insert an ensure block under aSender that jumps back to thisContext when evaluated. We also insert an exception handler under aSender that jumps back to thisContext when an unhandled exception is raised. In either case, the inserted ensure and exception handler are removed once control jumps back to thisContext." | error ctxt here topContext | here := thisContext. "Insert ensure and exception handler contexts under aSender" error := nil. ctxt := aSender insertSender: (Context contextOn: UnhandledError do: [:ex | error ifNil: [ error := ex exception. topContext := thisContext. ex resumeUnchecked: here jump] ifNotNil: [ex pass] ]). ctxt := ctxt insertSender: (Context contextEnsure: [error ifNil: [ topContext := thisContext. here jump] ]). self jump. "Control jumps to self" "Control resumes here once above ensure block or exception handler is executed" ^ error ifNil: [ "No error was raised, remove ensure context by stepping until popped" + [ctxt isDead or: [topContext isNil]] whileFalse: [topContext := topContext stepToSenderOrNil]. - [ctxt isDead or: [topContext isNil]] whileFalse: [topContext := topContext stepToCalleeOrNil]. {topContext. nil} ] ifNotNil: [ "Error was raised, remove inserted above contexts then return signaler context" aSender terminateTo: ctxt sender. "remove above ensure and handler contexts" {topContext. error} ]! Item was removed: - ----- Method: Context>>stepToCalleeOrNil (in category 'private') ----- - stepToCalleeOrNil - "Step to callee or sender; step to return and answer nil in case sender cannot be returned to." - - | ctxt | - ctxt := self. - [(ctxt willReturn and: [ctxt sender isNil or: [ctxt sender isDead]]) not and: [(ctxt := ctxt step) == self]] whileTrue. - ctxt == self ifTrue: [^nil]. - ^ctxt! Item was added: + ----- Method: Context>>stepToSenderOrNil (in category 'private') ----- + stepToSenderOrNil + "Step to sender or step to return and answer nil in case sender cannot be returned to." + + | ctxt | + ctxt := self. + [(ctxt willReturn and: [ctxt sender isNil or: [ctxt sender isDead]]) not and: [(ctxt := ctxt step) == self or: [ctxt hasSender: self]]] whileTrue. + ctxt == self ifTrue: [^nil]. + ^ctxt!

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The Trunk: Kernel-ct.1561.mcz
by commits＠source.squeak.org 05 Mar '24

05 Mar '24

Christoph Thiede uploaded a new version of Kernel to project The Trunk: http://source.squeak.org/trunk/Kernel-ct.1561.mcz ==================== Summary ==================== Name: Kernel-ct.1561 Author: ct Time: 5 March 2024, 9:36:04.183802 pm UUID: 066dbe81-44ca-7e44-8623-4652ec3e655e Ancestors: Kernel-ct.1559, Kernel-jar.1550 Merges Kernel-jar.1550 (avoids halting in #resume:through: when stepping over non-local return). See: https://lists.squeakfoundation.org/archives/list/squeak-dev@lists.squeakfou…. =============== Diff against Kernel-ct.1559 =============== Item was changed: ----- Method: Context>>runUntilErrorOrReturnFrom: (in category 'controlling') ----- runUntilErrorOrReturnFrom: aSender "ASSUMES aSender is a sender of self. Execute self's stack until aSender returns or an unhandled exception is raised. Return a pair containing the new top context and a possibly nil exception. The exception is not nil if it was raised before aSender returned and it was not handled. The exception is returned rather than openning the debugger, giving the caller the choice of how to handle it." "Self is run by jumping directly to it (the active process abandons thisContext and executes self). However, before jumping to self we insert an ensure block under aSender that jumps back to thisContext when evaluated. We also insert an exception handler under aSender that jumps back to thisContext when an unhandled exception is raised. In either case, the inserted ensure and exception handler are removed once control jumps back to thisContext." | error ctxt here topContext | here := thisContext. "Insert ensure and exception handler contexts under aSender" error := nil. ctxt := aSender insertSender: (Context contextOn: UnhandledError do: [:ex | error ifNil: [ error := ex exception. topContext := thisContext. ex resumeUnchecked: here jump] ifNotNil: [ex pass] ]). ctxt := ctxt insertSender: (Context contextEnsure: [error ifNil: [ topContext := thisContext. here jump] ]). self jump. "Control jumps to self" "Control resumes here once above ensure block or exception handler is executed" ^ error ifNil: [ "No error was raised, remove ensure context by stepping until popped" + [ctxt isDead or: [topContext isNil]] whileFalse: [topContext := topContext stepToSenderOrNil]. - [ctxt isDead or: [topContext isNil]] whileFalse: [topContext := topContext stepToCalleeOrNil]. {topContext. nil} ] ifNotNil: [ "Error was raised, remove inserted above contexts then return signaler context" aSender terminateTo: ctxt sender. "remove above ensure and handler contexts" {topContext. error} ]! Item was removed: - ----- Method: Context>>stepToCalleeOrNil (in category 'private') ----- - stepToCalleeOrNil - "Step to callee or sender; step to return and answer nil in case sender cannot be returned to." - - | ctxt | - ctxt := self. - [(ctxt willReturn and: [ctxt sender isNil or: [ctxt sender isDead]]) not and: [(ctxt := ctxt step) == self]] whileTrue. - ctxt == self ifTrue: [^nil]. - ^ctxt! Item was added: + ----- Method: Context>>stepToSenderOrNil (in category 'private') ----- + stepToSenderOrNil + "Step to sender or step to return and answer nil in case sender cannot be returned to." + + | ctxt | + ctxt := self. + [(ctxt willReturn and: [ctxt sender isNil or: [ctxt sender isDead]]) not and: [(ctxt := ctxt step) == self or: [ctxt hasSender: self]]] whileTrue. + ctxt == self ifTrue: [^nil]. + ^ctxt!

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The Treated Inbox: Tools-jar.1240.mcz
by commits＠source.squeak.org 05 Mar '24

05 Mar '24

Christoph Thiede uploaded a new version of Tools to project The Treated Inbox: http://source.squeak.org/treated/Tools-jar.1240.mcz ==================== Summary ==================== Name: Tools-jar.1240 Author: jar Time: 19 November 2023, 6:34:25.961053 pm UUID: 0ab90bee-c185-d547-96ef-3e1fefb3147c Ancestors: Tools-ct.1239 Complement Kernel-jar.1535 (Fix incorrect / inconsistent behavior after resuming from BCR exception.) In case you find the location I've chosen for the fix not appropriate, I'm all ears. This fix is not essential for Kernel-jar.1535; the point is just to get rid of a confusing error the debugger opens with when debugging BCR resumption. =============== Diff against Tools-ct.1239 =============== Item was changed: ----- Method: Debugger>>checkContextSelection (in category 'private') ----- checkContextSelection contextStackIndex = 0 ifTrue: [self contextStackIndex: 1 oldContextWas: nil]. + "The following line supports debugging of the resumption of the BlockCannotReturn exception. + Check Context >> #cannotReturn for more detailed notes:" + (self selectedContext method selector = #cannotReturn: and: [self selectedContext sender isDead]) ifTrue: + [Processor debugWithTitle: 'Illegal return following a BCR exception' translated full: false]! - !

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