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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 |
| 29 |
| 30 function f() { |
| 31 onmessage = function(m) { |
| 32 var sab = m; |
| 33 var ta = new Uint32Array(sab); |
| 34 if (sab.byteLength !== 16) { |
| 35 throw new Error("SharedArrayBuffer transfer byteLength"); |
| 36 } |
| 37 |
| 38 for (var i = 0; i < 4; ++i) { |
| 39 if (ta[i] !== i) { |
| 40 throw new Error("SharedArrayBuffer transfer value " + i); |
| 41 } |
| 42 } |
| 43 |
| 44 // Atomically update ta[0] |
| 45 Atomics.store(ta, 0, 100); |
| 46 }; |
| 47 } |
| 48 |
28 if (this.Worker) { | 49 if (this.Worker) { |
29 function f() { | 50 var w = new Worker(f); |
30 var g = function () { | |
31 postMessage(42); | |
32 }; | |
33 | 51 |
34 var w = new Worker(g); | 52 var sab = new SharedArrayBuffer(16); |
35 | 53 var ta = new Uint32Array(sab); |
36 onmessage = function(parentMsg) { | 54 for (var i = 0; i < 4; ++i) { |
37 w.postMessage(parentMsg); | 55 ta[i] = i; |
38 var childMsg = w.getMessage(); | |
39 postMessage(childMsg); | |
40 }; | |
41 } | 56 } |
42 | 57 |
43 var w = new Worker(f); | 58 // Transfer SharedArrayBuffer |
44 w.postMessage(9); | 59 w.postMessage(sab, [sab]); |
45 assertEquals(42, w.getMessage()); | 60 assertEquals(16, sab.byteLength); // ArrayBuffer should not be neutered. |
| 61 |
| 62 // Spinwait for the worker to update ta[0] |
| 63 var ta0; |
| 64 while ((ta0 = Atomics.load(ta, 0)) == 0) {} |
| 65 |
| 66 assertEquals(100, ta0); |
| 67 |
| 68 w.terminate(); |
| 69 |
| 70 assertEquals(16, sab.byteLength); // Still not neutered. |
46 } | 71 } |
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