55c48820f8
This adds an additional V8 API to get the backing store of an array buffer. Unlike the existing API, the backing store comes wrapped in a std::shared_ptr, making lifetime management with the embedder explicit. This obviates the need for the old GetContents() and Externalize() APIs, which will be deprecated in a future CL. Contributed by titzer@chromium.org Bug: v8:9380 Change-Id: I8a87f5dc141dab684693fe536b636e33f6e45173 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1807354 Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org> Commit-Queue: Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#63883}
85 lines
2.0 KiB
JavaScript
85 lines
2.0 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
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const kNumIterations = 10;
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function NewWorker() {
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let script =
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`onmessage = (msg) => {
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if (msg.memory) postMessage("ack");
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if (msg.quit) postMessage("bye");
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gc();
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}`;
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return new Worker(script, {type: 'string'});
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}
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function PingWorker(worker, memory) {
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worker.postMessage({memory: memory});
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assertEquals("ack", worker.getMessage());
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worker.postMessage({quit: true});
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assertEquals("bye", worker.getMessage());
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}
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function AllocMemory() {
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return new SharedArrayBuffer(1024);
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}
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function RunSingleWorkerSingleMemoryTest() {
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print(arguments.callee.name);
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let worker = NewWorker();
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let first = AllocMemory();
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for (let i = 0; i < kNumIterations; i++) {
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print(`iteration ${i}`);
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PingWorker(worker, first);
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gc();
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}
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worker.terminate();
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}
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function RunSingleWorkerTwoMemoryTest() {
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print(arguments.callee.name);
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let worker = NewWorker();
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let first = AllocMemory(), second = AllocMemory();
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for (let i = 0; i < kNumIterations; i++) {
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print(`iteration ${i}`);
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PingWorker(worker, first);
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PingWorker(worker, second);
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gc();
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}
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worker.terminate();
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}
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function RunSingleWorkerMultipleMemoryTest() {
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print(arguments.callee.name);
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let worker = NewWorker();
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let first = AllocMemory();
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for (let i = 0; i < kNumIterations; i++) {
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print(`iteration ${i}`);
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PingWorker(worker, first);
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PingWorker(worker, AllocMemory());
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gc();
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}
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worker.terminate();
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}
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function RunMultipleWorkerMultipleMemoryTest() {
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print(arguments.callee.name);
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let first = AllocMemory();
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for (let i = 0; i < kNumIterations; i++) {
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print(`iteration ${i}`);
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let worker = NewWorker();
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PingWorker(worker, first);
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PingWorker(worker, AllocMemory());
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worker.terminate();
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gc();
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}
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}
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RunSingleWorkerSingleMemoryTest();
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RunSingleWorkerTwoMemoryTest();
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RunSingleWorkerMultipleMemoryTest();
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RunMultipleWorkerMultipleMemoryTest();
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