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Original commit message:
Reland^2 "Add ContinuationPreservedEmbedderData builtins to extras binding"
This reverts commit cb1277e97a0ed32fd893be9f4e927f6e8b6c566c.
> Original change's description:
> > Add ContinuationPreservedEmbedderData builtins to extras binding
> >
> > Node.js and Deno wish to use CPED for AsyncLocalStorage and APM, which
> > needs a high performance implementation. These builtins allow JavaScript
> > to handle CPED performantly.
> >
> > Change-Id: I7577be80818524baa52791dfce57d442d7c0c933
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5638129
> > Commit-Queue: snek <snek@chromium.org>
> > Reviewed-by: Darius Mercadier <dmercadier@chromium.org>
> > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> > Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#94607}
>
> Change-Id: Ief390f0b99891c8de83b4c794180440f91cbaf1f
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5649024
> Auto-Submit: Shu-yu Guo <syg@chromium.org>
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Cr-Commit-Position: refs/heads/main@{#94608}
Change-Id: I4943071ffe192084e83bfe3113cfe9c92ef31465
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/5677045
Reviewed-by: Darius Mercadier <dmercadier@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: snek <snek@chromium.org>
Cr-Commit-Position: refs/heads/main@{#94866}
Refs: v8/v8@7857eb3
PR-URL: https://github.com/nodejs/node/pull/53997
Refs: 7857eb34db
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
86 lines
2.0 KiB
JavaScript
86 lines
2.0 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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const {
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getContinuationPreservedEmbedderData,
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setContinuationPreservedEmbedderData,
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} = d8.getExtrasBindingObject();
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// Basic set and get
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const foo = { bar: 'baz' };
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setContinuationPreservedEmbedderData(foo);
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assertEquals(foo, getContinuationPreservedEmbedderData());
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// Captures at the point a continuation is created
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{
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// Resolve path
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setContinuationPreservedEmbedderData('init');
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let resolve;
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const p = new Promise(r => {
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resolve = r;
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});
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setContinuationPreservedEmbedderData('resolve');
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resolve();
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setContinuationPreservedEmbedderData('continuation-created');
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p.then(deferredVerify('continuation-created'));
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setContinuationPreservedEmbedderData('after');
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%PerformMicrotaskCheckpoint();
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}
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{
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// Reject path
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setContinuationPreservedEmbedderData('init');
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let reject;
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const p = new Promise((_, r) => {
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reject = r;
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});
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setContinuationPreservedEmbedderData('resolve');
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reject();
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setContinuationPreservedEmbedderData('continuation-created');
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p.catch(deferredVerify('continuation-created'));
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setContinuationPreservedEmbedderData('after');
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%PerformMicrotaskCheckpoint();
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}
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// Should propagate through thenables
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function thenable(expected) {
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const verify = deferredVerify(expected);
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return {
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then(fulfill) {
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verify();
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fulfill();
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}
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}
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}
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async function testThenables() {
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setContinuationPreservedEmbedderData('plain thenable');
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await thenable('plain thenable');
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setContinuationPreservedEmbedderData('resolved thenable');
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await Promise.resolve(thenable('resolved thenable'));
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setContinuationPreservedEmbedderData('async returned thenable');
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await (async () => thenable('async returned thenable'))();
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}
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testThenables();
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%PerformMicrotaskCheckpoint();
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//
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// Test helpers
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//
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function deferredVerify(expected) {
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return () => {
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assertEquals(expected, getContinuationPreservedEmbedderData());
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};
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}
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