e0b18b9022
This is a reland of a0728e869b
Original change's description:
> [d8] Remove maximum workers limitation
>
> This CL refactors the lifetime management of the v8::Worker C++ object
> and in the process lifts the 100 maximum worker limitation. To do this,
> it uses a Managed<v8::Worker> heap object and attaches the managed to
> the API worker object.
>
> R=mstarzinger@chromium.org
> BUG=v8:9524
>
> Change-Id: I279b7aeb6645a87f9108ee6f572105739721cef4
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1715453
> Commit-Queue: Ben Titzer <titzer@chromium.org>
> Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#62932}
Bug: v8:9524
Change-Id: I7d903fb12ddb00909a9429455f46c55db2fd02de
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1722562
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Ben Titzer <titzer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62974}
57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
// Copyright 2019 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: --expose-gc --stress-runs=1
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const kBatchSize = 10;
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const kNumBatches = 10;
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function RunWorkerBatch(count) {
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let script = `onmessage =
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function(msg) {
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if (msg.array) {
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msg.array[0] = 99;
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postMessage({array : msg.array});
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}
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}`;
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// Launch workers.
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let workers = new Array(count);
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for (let i = 0; i < count; i++) {
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workers[i] = new Worker(script, {type : 'string'});
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}
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// Send messages.
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for (let i = 0; i < workers.length; i++) {
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let array = new Int32Array([55, -77]);
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workers[i].postMessage({array : array});
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// terminate half of the workers early.
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if ((i & 1) == 1) workers[i].terminate();
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}
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// Wait for replies.
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for (let i = 0; i < workers.length; i++) {
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let msg = workers[i].getMessage();
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if (msg !== undefined && msg.array) {
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assertInstanceof(msg.array, Int32Array);
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assertEquals(99, msg.array[0]);
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assertEquals(-77, msg.array[1]);
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}
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// terminate all workers.
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workers[i].terminate();
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}
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}
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(function RunTest() {
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print(`running ${kNumBatches} batches...`);
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let time = performance.now();
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for (let i = 0; i < kNumBatches; i++) {
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let before = performance.now();
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RunWorkerBatch(kBatchSize);
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gc();
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let time = performance.now() - before;
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print(`batch ${i+1}, Δ = ${(time).toFixed(3)} ms`);
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}
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})();
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