undefined-for-timeout-agent.js (2707B)
1 // |reftest| shell-option(--setpref=atomics_wait_async) skip-if(!this.hasOwnProperty('SharedArrayBuffer')||!this.hasOwnProperty('Atomics')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))||!xulRuntime.shell) async -- SharedArrayBuffer,Atomics is not enabled unconditionally, ARM64 Simulator cannot emulate atomics, requires shell-options 2 // Copyright (C) 2020 Rick Waldron. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 esid: sec-atomics.waitasync 7 description: > 8 Undefined timeout arg should result in an infinite timeout 9 info: | 10 Atomics.waitAsync( typedArray, index, value, timeout ) 11 12 1. Return DoWait(async, typedArray, index, value, timeout). 13 14 DoWait ( mode, typedArray, index, value, timeout ) 15 16 6. Let q be ? ToNumber(timeout). 17 ... 18 Undefined Return NaN. 19 20 5.If q is NaN, let t be +∞, else let t be max(q, 0) 21 22 flags: [async] 23 includes: [atomicsHelper.js] 24 features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, arrow-function, async-functions] 25 ---*/ 26 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"'); 27 28 const WAIT_INDEX = 0; 29 const RUNNING = 1; 30 const NUMAGENT = 2; 31 const NOTIFYCOUNT = 2; 32 33 $262.agent.start(` 34 $262.agent.receiveBroadcast(async (sab) => { 35 var i32a = new Int32Array(sab); 36 Atomics.add(i32a, ${RUNNING}, 1); 37 38 // undefined => NaN => +Infinity 39 $262.agent.report("A " + (await Atomics.waitAsync(i32a, 0, 0, undefined).value)); 40 $262.agent.leaving(); 41 }); 42 `); 43 44 $262.agent.start(` 45 $262.agent.receiveBroadcast(async (sab) => { 46 var i32a = new Int32Array(sab); 47 Atomics.add(i32a, ${RUNNING}, 1); 48 49 // undefined timeout arg => NaN => +Infinity 50 $262.agent.report("B " + (await Atomics.waitAsync(i32a, 0, 0).value)); 51 $262.agent.leaving(); 52 }); 53 `); 54 55 const i32a = new Int32Array( 56 new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4) 57 ); 58 59 $262.agent.safeBroadcastAsync(i32a, RUNNING, NUMAGENT).then(async (agentCount) => { 60 61 assert.sameValue(agentCount, NUMAGENT, 'The value of `agentCount` is expected to equal the value of NUMAGENT'); 62 63 assert.sameValue( 64 Atomics.notify(i32a, WAIT_INDEX, NOTIFYCOUNT), 65 NOTIFYCOUNT, 66 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0, 2) must return the value of NOTIFYCOUNT' 67 ); 68 69 const reports = [ 70 await $262.agent.getReportAsync(), 71 await $262.agent.getReportAsync(), 72 ]; 73 74 reports.sort(); 75 assert.sameValue(reports[0], 'A ok', 'The value of reports[0] is "A ok"'); 76 assert.sameValue(reports[1], 'B ok', 'The value of reports[1] is "B ok"'); 77 }).then($DONE, $DONE);