good-views.js (2021B)
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.add 6 description: Test Atomics.add 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(16); 12 13 testWithBigIntTypedArrayConstructors(function(TA) { 14 const view = new TA(sab, 32, 20); 15 const control = new TA(ab, 0, 2); 16 view[8] = 0n; 17 assert.sameValue(Atomics.add(view, 8, 10n), 0n, 'Atomics.add(view, 8, 10n) returns 0'); 18 assert.sameValue(view[8], 10n, 'The value of view[8] is 10n'); 19 assert.sameValue(Atomics.add(view, 8, -5n), 10n, 'Atomics.add(view, 8, -5n) returns 10n'); 20 assert.sameValue(view[8], 5n, 'The value of view[8] is 5n'); 21 view[3] = -5n; 22 control[0] = -5n; 23 24 assert.sameValue( 25 Atomics.add(view, 3, 0n), 26 control[0], 27 'Atomics.add(view, 3, 0n) returns the value of `control[0]` (-5n)' 28 ); 29 30 control[0] = 12345n; 31 view[3] = 12345n; 32 33 assert.sameValue( 34 Atomics.add(view, 3, 0n), 35 control[0], 36 'Atomics.add(view, 3, 0n) returns the value of `control[0]` (12345n)' 37 ); 38 39 control[0] = 123456789n; 40 view[3] = 123456789n; 41 42 assert.sameValue( 43 Atomics.add(view, 3, 0n), 44 control[0], 45 'Atomics.add(view, 3, 0n) returns the value of `control[0]` (123456789n)' 46 ); 47 48 testWithAtomicsInBoundsIndices(function(IdxGen) { 49 let Idx = IdxGen(view); 50 view.fill(0n); 51 Atomics.store(view, Idx, 37n); 52 assert.sameValue(Atomics.add(view, Idx, 0n), 37n, 'Atomics.add(view, Idx, 0) returns 37n'); 53 }); 54 }); 55 56 reportCompare(0, 0);