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deps/v8/test/mjsunit/harmony/uint8-array-set-from-hex-on-shared-array-buffer.js
59 строк
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Michaël Zasso
deps: update V8 to 14.1.146.11
04 окт 2025, 19:47
Не верифицирован
04 окт 2025, 19:47
7772a2d
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// Copyright 2025 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // Flags: --js-base-64 --allow-natives-syntax const workerScript = ` onmessage = function(event) { const sab = event.data.buffer; const uint8Array = new Uint8Array(sab); const dataToWrite = [102, 111, 111, 98, 97, 114, 255, 255]; for (let i = 0; i < dataToWrite.length; ++i) { uint8Array[i] = dataToWrite[i]; } postMessage("started"); while (true) { for (let i = 0; i < dataToWrite.length; ++i) { uint8Array[i] = dataToWrite[i]; } } }; `; function testConcurrentSharedArrayBufferUint8ArraySetFromHex() { const sab = new SharedArrayBuffer(8); const uint8ArrayMain = new Uint8Array(sab); // Create a worker const worker = new Worker(workerScript, {type: 'string'}); // Send the SharedArrayBuffer worker.postMessage({buffer: sab}); assertEquals('started', worker.getMessage()); // Give the worker a little time to write for (let i = 0; i < 10000; ++i) { } // Call setFromHex on the main thread's view of the SAB for (let i = 0; i < 100; i++) { const result = uint8ArrayMain.setFromHex('666f6f626172'); const actual = Array.from(uint8ArrayMain); assertEquals( actual, [102, 111, 111, 98, 97, 114, 255, 255], 'setFromHex result mismatch with concurrent writes'); } // Terminate the worker (now it should exit its loop) worker.terminate(); } // Run the test function testConcurrentSharedArrayBufferUint8ArraySetFromHex();