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Hi Marcel,</p>
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these are interesting concepts though hard to evaluate without real-world examples, I guess. But it does seem to be a crucial core concept to me. Maybe this would better fit into the System package? I'd like to keep the Kernel package as small as possible and
this one is rather advanced stuff ... <span>😊</span></p>
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<div class="_rp_T4" id="Item.MessagePartBody">Best,
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<div><font size="3" color="black"><span style="font-size:12pt"><a href="http://www.hpi.de/" target="_blank" rel="noopener noreferrer" id="LPNoLP"><font size="2"><span id="LPlnk909538"><font color="#757B80"></font></span></font></a></span></font></div>
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<div class="_rp_T4" id="Item.MessagePartBody">Christoph</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von Taeumel, Marcel<br>
<b>Gesendet:</b> Montag, 19. April 2021 17:50:02<br>
<b>An:</b> squeak-dev<br>
<b>Betreff:</b> Re: [squeak-dev] The Inbox: Kernel-mt.1390.mcz</font>
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Here are the two options in an exapmle:
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<p style="color: #AAAAAA; margin-top: 10px;">Am 19.04.2021 17:48:03 schrieb commits@source.squeak.org <commits@source.squeak.org>:</p>
<div style="font-family:Arial,Helvetica,sans-serif">A new version of Kernel was added to project The Inbox:<br>
http://source.squeak.org/inbox/Kernel-mt.1390.mcz<br>
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==================== Summary ====================<br>
<br>
Name: Kernel-mt.1390<br>
Author: mt<br>
Time: 19 April 2021, 5:47:51.865053 pm<br>
UUID: c36ac126-16de-3d41-be90-6b7fd46bc0c7<br>
Ancestors: Kernel-nice.1389<br>
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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.<br>
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=============== Diff against Kernel-nice.1389 ===============<br>
<br>
Item was added:<br>
+ Notification subclass: #RestartContextRequest<br>
+ instanceVariableNames: ''<br>
+ classVariableNames: ''<br>
+ poolDictionaries: ''<br>
+ category: 'Kernel-Exceptions'!<br>
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Item was added:<br>
+ ----- Method: RestartContextRequest class>>fromContextSuchThat: (in category 'as yet unclassified') -----<br>
+ fromContextSuchThat: block<br>
+ "Use this to restart from an arbitrary context on the stack."<br>
+ <br>
+ | context |<br>
+ context := thisContext sender.<br>
+ [context notNil] whileTrue: [<br>
+ (block value: context) ifTrue: [<br>
+ ^ self new restartFrom: context].<br>
+ context := context sender].<br>
+ self error: 'No context found!!'.!<br>
<br>
Item was added:<br>
+ ----- Method: RestartContextRequest>>restartFrom: (in category 'as yet unclassified') -----<br>
+ restartFrom: aContext<br>
+ <br>
+ | process actualContext unwindError |<br>
+ aContext ifNil: [^ self error: 'No context to restart!!'].<br>
+ <br>
+ process := Processor activeProcess.<br>
+ <br>
+ [actualContext := process popTo: aContext.<br>
+ unwindError := actualContext ~= aContext.<br>
+ unwindError<br>
+ ifTrue: [process resume]<br>
+ ifFalse: [process restartTop; stepToSendOrReturn; resume]<br>
+ ] fork.<br>
+ <br>
+ process suspend.!<br>
<br>
Item was added:<br>
+ ----- Method: RestartContextRequest>>restartFromHere (in category 'as yet unclassified') -----<br>
+ restartFromHere<br>
+ "Use this to restart from an exception handler."<br>
+ self restartFrom: handlerContext.!<br>
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