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Diffstat (limited to '')
-rw-r--r-- | js/src/tests/test262/built-ins/Atomics/compareExchange/good-views.js | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/compareExchange/good-views.js b/js/src/tests/test262/built-ins/Atomics/compareExchange/good-views.js new file mode 100644 index 0000000000..a9a8afc53f --- /dev/null +++ b/js/src/tests/test262/built-ins/Atomics/compareExchange/good-views.js @@ -0,0 +1,77 @@ +// |reftest| skip-if(!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration()['arm64-simulator'])) -- Atomics,SharedArrayBuffer is not enabled unconditionally, ARM64 Simulator cannot emulate atomics +// Copyright (C) 2017 Mozilla Corporation. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-atomics.compareexchange +description: Test Atomics.compareExchange on arrays that allow atomic operations. +includes: [testAtomics.js, testTypedArray.js] +features: [ArrayBuffer, Atomics, DataView, SharedArrayBuffer, Symbol, TypedArray] +---*/ + +const sab = new SharedArrayBuffer(1024); +const ab = new ArrayBuffer(16); +const views = intArrayConstructors.slice(); + +testWithTypedArrayConstructors(function(TA) { + // Make it interesting - use non-zero byteOffsets and non-zero indexes. + + const view = new TA(sab, 32, 20); + const control = new TA(ab, 0, 2); + + // Performs the exchange + view[8] = 0; + assert.sameValue( + Atomics.compareExchange(view, 8, 0, 10), + 0, + 'Atomics.compareExchange(view, 8, 0, 10) returns 0' + ); + assert.sameValue(view[8], 10, 'The value of view[8] is 10'); + + view[8] = 0; + assert.sameValue(Atomics.compareExchange(view, 8, 1, 10), 0, + 'Atomics.compareExchange(view, 8, 1, 10) returns 0'); + assert.sameValue(view[8], 0, 'The value of view[8] is 0'); + + view[8] = 0; + assert.sameValue(Atomics.compareExchange(view, 8, 0, -5), 0, + 'Atomics.compareExchange(view, 8, 0, -5) returns 0'); + control[0] = -5; + assert.sameValue(view[8], control[0], 'The value of view[8] equals the value of `control[0]` (-5)'); + + + view[3] = -5; + control[0] = -5; + assert.sameValue(Atomics.compareExchange(view, 3, -5, 0), control[0], + 'Atomics.compareExchange(view, 3, -5, 0) returns the value of `control[0]` (-5)'); + assert.sameValue(view[3], 0, 'The value of view[3] is 0'); + + + control[0] = 12345; + view[3] = 12345; + assert.sameValue(Atomics.compareExchange(view, 3, 12345, 0), control[0], + 'Atomics.compareExchange(view, 3, 12345, 0) returns the value of `control[0]` (12345)'); + assert.sameValue(view[3], 0, 'The value of view[3] is 0'); + + control[0] = 123456789; + view[3] = 123456789; + assert.sameValue(Atomics.compareExchange(view, 3, 123456789, 0), control[0], + 'Atomics.compareExchange(view, 3, 123456789, 0) returns the value of `control[0]` (123456789)'); + assert.sameValue(view[3], 0, 'The value of view[3] is 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.compareExchange(view, Idx, 37, 0), + 37, + 'Atomics.compareExchange(view, Idx, 37, 0) returns 37' + ); + }); +}, views); + +reportCompare(0, 0); |