35022 2010-02-17 01:45:34 -0800 [V8] Refactor ScheduledAction to support different kinds of actions 2013-05-02 11:09:58 -0700 1 1 1 Unclassified WebKit WebCore JavaScript 528+ (Nightly build) PC OS X 10.5 RESOLVED WONTFIX P2 Normal --- 0 dominicc webkit-unassigned abarth andersca dglazkov dimich sam oldest_to_newest 190929 0 dominicc 2010-02-17 01:45:34 -0800 ScheduledAction is hard-wired to invoke V8 functions; separating the ScheduledAction interface and implementation which invokes a V8 function permits other kinds of scheduled actions. 190934 1 48872 dominicc 2010-02-17 01:53:13 -0800 Created attachment 48872 Patch 191065 2 dglazkov 2010-02-17 09:55:02 -0800 How does this look performance-wise? Any visible regressions? I am ok with the change if it doesn't introduce perf regressions. 191078 3 sam 2010-02-17 10:30:03 -0800 Why is this useful? 191486 4 dominicc 2010-02-18 01:28:16 -0800 (In reply to comment #2) > How does this look performance-wise? Any visible regressions? I am ok with the > change if it doesn't introduce perf regressions. I wrote a microbenchmark, first just calling execute (with no context => execute doesn't find a V8 context and exits); then creating and destroying the (V8)ScheduledAction as well. The difference looks to be within noise, <0.5%. I ran the Chromium perf test suite. (In reply to comment #3) > Why is this useful? V8 has two scheduled actions--one with a window context; one with a worker context. I'm separating the interface so that we can have different kinds of scheduled actions in Chromium without having to wind them together in the same file with if statements. 192009 5 dimich 2010-02-19 11:58:42 -0800 Please see bug 23229 for alternative idea. I guess the motivation here is to remove multiple execute() methods and the 'if' that checks the type of context... So perhaps the plan is to have another patch after this one, which will split the V8ScheduledAction into 2 classes, one for Document context and another for Worker context, is that your intention? If that's true, perhaps indeed moving execute() to SEC is a better way then creating more classes? 198402 6 48872 dimich 2010-03-10 16:06:29 -0800 Comment on attachment 48872 Patch In a separate discussion, it was said that this is a part of a feature that is being worked on but is not ready enough yet. So it's hard to see how (or when) the change will be used in WebKit, so it's hard to get the best possible feedback. I'm going to r- it for now. When we have more 'complete' chunk or more info that can be evaluated by the open project reviewers, we should look at it again. 883838 7 andersca 2013-05-02 11:09:58 -0700 V8 is gone from WebKit. 48872 2010-02-17 01:53:13 -0800 2010-06-11 10:02:10 -0700 Patch 0001-Refactors-ScheduledAction-to-support-different-kinds.patch text/plain 26085 dominicc RnJvbSA4MTU3NWRmZDhiYmYzYjJhZjE3Zjk1YjhmZjA2OWUwMGE4OTk2Y2JjIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBEb21pbmljIENvb25leSA8ZG9taW5pY2NAZ29vZ2xlLmNvbT4K RGF0ZTogV2VkLCAxNyBGZWIgMjAxMCAxNTo0Njo1MyArMDkwMApTdWJqZWN0OiBbUEFUQ0hdIFJl ZmFjdG9ycyBTY2hlZHVsZWRBY3Rpb24gdG8gc3VwcG9ydCBkaWZmZXJlbnQga2luZHMgb2YgYWN0 aW9ucy4KCi0tLQogV2ViQ29yZS9DaGFuZ2VMb2cgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgfCAgIDMyICsrKysrCiBXZWJDb3JlL1dlYkNvcmUuZ3lwaSAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICB8ICAgIDUgKy0KIFdlYkNvcmUvYmluZGluZ3MvZ2VuZXJpYy9TY2hlZHVs ZWRBY3Rpb24uaCAgICAgICAgIHwgICA0NyArKysrKysKIFdlYkNvcmUvYmluZGluZ3MvdjgvU2No 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