| // Copyright (C) 2017 Mozilla Corporation. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-atomics.or |
| description: Test Atomics.or on arrays that allow atomic operations |
| includes: [testAtomics.js, testTypedArray.js] |
| features: [SharedArrayBuffer, ArrayBuffer, DataView, Atomics, arrow-function, let, TypedArray, for-of] |
| ---*/ |
| |
| var sab = new SharedArrayBuffer(1024); |
| var ab = new ArrayBuffer(16); |
| var int_views = [Int8Array, Uint8Array, Int16Array, Uint16Array, Int32Array, Uint32Array]; |
| |
| testWithTypedArrayConstructors(function(View) { |
| // Make it interesting - use non-zero byteOffsets and non-zero indexes. |
| |
| var view = new View(sab, 32, 20); |
| var control = new View(ab, 0, 2); |
| |
| view[8] = 0x33333333; |
| control[0] = 0x33333333; |
| assert.sameValue(Atomics.or(view, 8, 0x55555555), control[0], |
| "Result is subject to chopping"); |
| |
| control[0] = 0x77777777; |
| assert.sameValue(view[8], control[0]); |
| assert.sameValue(Atomics.or(view, 8, 0xF0F0F0F0), control[0], |
| "Result is subject to chopping"); |
| |
| control[0] = 0xF7F7F7F7; |
| assert.sameValue(view[8], control[0]); |
| |
| view[3] = -5; |
| control[0] = -5; |
| assert.sameValue(Atomics.or(view, 3, 0), control[0], |
| "Result is negative and subject to coercion"); |
| assert.sameValue(view[3], control[0]); |
| |
| control[0] = 12345; |
| view[3] = 12345; |
| assert.sameValue(Atomics.or(view, 3, 0), control[0], |
| "Result is subject to chopping"); |
| assert.sameValue(view[3], control[0]); |
| |
| control[0] = 123456789; |
| view[3] = 123456789; |
| assert.sameValue(Atomics.or(view, 3, 0), control[0], |
| "Result is subject to chopping"); |
| assert.sameValue(view[3], control[0]); |
| |
| // In-bounds boundary cases for indexing |
| testWithAtomicsInBoundsIndices(function(IdxGen) { |
| let Idx = IdxGen(view); |
| view.fill(0); |
| // Atomics.store() computes an index from Idx in the same way as other |
| // Atomics operations, not quite like view[Idx]. |
| Atomics.store(view, Idx, 37); |
| assert.sameValue(Atomics.or(view, Idx, 0), 37); |
| }); |
| }, int_views); |