Here are the two options in an exapmle:


Am 19.04.2021 17:48:03 schrieb commits at source.squeak.org <commits at source.squeak.org>:
A new version of Kernel was added to project The Inbox:
http://source.squeak.org/inbox/Kernel-mt.1390.mcz

==================== Summary ====================

Name: Kernel-mt.1390
Author: mt
Time: 19 April 2021, 5:47:51.865053 pm
UUID: c36ac126-16de-3d41-be90-6b7fd46bc0c7
Ancestors: Kernel-nice.1389

Proposal. Better support for hot code updates by restarting from a denoted (i.e. domain-specific) context (or active method). For example, this could be used to better update the McmUpdater as soon as a code change in itself is detected. Two options: either mark the restart context with an on:do: handler or process a query to look up that context such as by package name.

=============== Diff against Kernel-nice.1389 ===============

Item was added:
+ Notification subclass: #RestartContextRequest
+ instanceVariableNames: ''
+ classVariableNames: ''
+ poolDictionaries: ''
+ category: 'Kernel-Exceptions'!

Item was added:
+ ----- Method: RestartContextRequest class>>fromContextSuchThat: (in category 'as yet unclassified') -----
+ fromContextSuchThat: block
+ "Use this to restart from an arbitrary context on the stack."
+
+ | context |
+ context := thisContext sender.
+ [context notNil] whileTrue: [
+ (block value: context) ifTrue: [
+ ^ self new restartFrom: context].
+ context := context sender].
+ self error: 'No context found!!'.!

Item was added:
+ ----- Method: RestartContextRequest>>restartFrom: (in category 'as yet unclassified') -----
+ restartFrom: aContext
+
+ | process actualContext unwindError |
+ aContext ifNil: [^ self error: 'No context to restart!!'].
+
+ process := Processor activeProcess.
+
+ [actualContext := process popTo: aContext.
+ unwindError := actualContext ~= aContext.
+ unwindError
+ ifTrue: [process resume]
+ ifFalse: [process restartTop; stepToSendOrReturn; resume]
+ ] fork.
+
+ process suspend.!

Item was added:
+ ----- Method: RestartContextRequest>>restartFromHere (in category 'as yet unclassified') -----
+ restartFromHere
+ "Use this to restart from an exception handler."
+ self restartFrom: handlerContext.!


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