ffa6b5fe6c
This is more consistent with the DOM API, and is clearer w.r.t. which values are available in the lexical environment of the Worker. BUG=chromium:497295 R=jarin@chromium.org LOG=n Review URL: https://codereview.chromium.org/1218553004 Cr-Commit-Position: refs/heads/master@{#29426}
69 lines
2.5 KiB
JavaScript
69 lines
2.5 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --harmony-sharedarraybuffer --harmony-atomics
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var workerScript =
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`onmessage = function(m) {
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var sab = m;
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var ta = new Uint32Array(sab);
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if (sab.byteLength !== 16) {
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throw new Error('SharedArrayBuffer transfer byteLength');
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}
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for (var i = 0; i < 4; ++i) {
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if (ta[i] !== i) {
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throw new Error('SharedArrayBuffer transfer value ' + i);
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}
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}
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// Atomically update ta[0]
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Atomics.store(ta, 0, 100);
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};`;
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if (this.Worker) {
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var w = new Worker(workerScript);
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var sab = new SharedArrayBuffer(16);
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var ta = new Uint32Array(sab);
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for (var i = 0; i < 4; ++i) {
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ta[i] = i;
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}
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// Transfer SharedArrayBuffer
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w.postMessage(sab, [sab]);
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assertEquals(16, sab.byteLength); // ArrayBuffer should not be neutered.
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// Spinwait for the worker to update ta[0]
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var ta0;
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while ((ta0 = Atomics.load(ta, 0)) == 0) {}
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assertEquals(100, ta0);
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w.terminate();
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assertEquals(16, sab.byteLength); // Still not neutered.
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}
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