good-views.js (1706B)
1 // |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 2 // Copyright (C) 2018 Rick Waldron. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 /*--- 5 esid: sec-atomics.load 6 description: Test Atomics.load on arrays that allow atomic operations. 7 includes: [testAtomics.js, testBigIntTypedArray.js] 8 features: [ArrayBuffer, Atomics, BigInt, DataView, SharedArrayBuffer, Symbol, TypedArray] 9 ---*/ 10 const sab = new SharedArrayBuffer(1024); 11 const ab = new ArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 2); 12 13 testWithBigIntTypedArrayConstructors(function(TA) { 14 const view = new TA(sab, 32, 20); 15 const control = new TA(ab, 0, 2); 16 view[3] = -5n; 17 control[0] = -5n; 18 19 assert.sameValue( 20 Atomics.load(view, 3), 21 control[0], 22 'Atomics.load(view, 3) returns the value of `control[0]` (-5n)' 23 ); 24 25 control[0] = 12345n; 26 view[3] = 12345n; 27 28 assert.sameValue( 29 Atomics.load(view, 3), 30 control[0], 31 'Atomics.load(view, 3) returns the value of `control[0]` (12345n)' 32 ); 33 34 control[0] = 123456789n; 35 view[3] = 123456789n; 36 37 assert.sameValue( 38 Atomics.load(view, 3), 39 control[0], 40 'Atomics.load(view, 3) returns the value of `control[0]` (123456789n)' 41 ); 42 43 testWithAtomicsInBoundsIndices(function(IdxGen) { 44 let Idx = IdxGen(view); 45 view.fill(0n); 46 Atomics.store(view, Idx, 37n); 47 assert.sameValue(Atomics.load(view, Idx), 37n, 'Atomics.load(view, Idx) returns 37n'); 48 }); 49 }); 50 51 reportCompare(0, 0);