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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 // Flags: --harmony-sharedarraybuffer --harmony-atomics | 28 // Flags: --harmony-sharedarraybuffer --harmony-atomics |
29 | 29 |
30 function f() { | 30 var workerScript = |
31 onmessage = function(m) { | 31 `onmessage = function(m) { |
32 var sab = m; | 32 var sab = m; |
33 var ta = new Uint32Array(sab); | 33 var ta = new Uint32Array(sab); |
34 if (sab.byteLength !== 16) { | 34 if (sab.byteLength !== 16) { |
35 throw new Error("SharedArrayBuffer transfer byteLength"); | 35 throw new Error('SharedArrayBuffer transfer byteLength'); |
36 } | 36 } |
37 | 37 for (var i = 0; i < 4; ++i) { |
38 for (var i = 0; i < 4; ++i) { | 38 if (ta[i] !== i) { |
39 if (ta[i] !== i) { | 39 throw new Error('SharedArrayBuffer transfer value ' + i); |
40 throw new Error("SharedArrayBuffer transfer value " + i); | 40 } |
41 } | 41 } |
42 } | |
43 | |
44 // Atomically update ta[0] | 42 // Atomically update ta[0] |
45 Atomics.store(ta, 0, 100); | 43 Atomics.store(ta, 0, 100); |
46 }; | 44 };`; |
47 } | |
48 | 45 |
49 if (this.Worker) { | 46 if (this.Worker) { |
50 var w = new Worker(f); | 47 var w = new Worker(workerScript); |
51 | 48 |
52 var sab = new SharedArrayBuffer(16); | 49 var sab = new SharedArrayBuffer(16); |
53 var ta = new Uint32Array(sab); | 50 var ta = new Uint32Array(sab); |
54 for (var i = 0; i < 4; ++i) { | 51 for (var i = 0; i < 4; ++i) { |
55 ta[i] = i; | 52 ta[i] = i; |
56 } | 53 } |
57 | 54 |
58 // Transfer SharedArrayBuffer | 55 // Transfer SharedArrayBuffer |
59 w.postMessage(sab, [sab]); | 56 w.postMessage(sab, [sab]); |
60 assertEquals(16, sab.byteLength); // ArrayBuffer should not be neutered. | 57 assertEquals(16, sab.byteLength); // ArrayBuffer should not be neutered. |
61 | 58 |
62 // Spinwait for the worker to update ta[0] | 59 // Spinwait for the worker to update ta[0] |
63 var ta0; | 60 var ta0; |
64 while ((ta0 = Atomics.load(ta, 0)) == 0) {} | 61 while ((ta0 = Atomics.load(ta, 0)) == 0) {} |
65 | 62 |
66 assertEquals(100, ta0); | 63 assertEquals(100, ta0); |
67 | 64 |
68 w.terminate(); | 65 w.terminate(); |
69 | 66 |
70 assertEquals(16, sab.byteLength); // Still not neutered. | 67 assertEquals(16, sab.byteLength); // Still not neutered. |
71 } | 68 } |
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