value-not-equal.js (1879B)
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 Amal Hussein. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 esid: sec-atomics.wait 7 description: > 8 Returns "not-equal" when value arg does not match an index in the typedArray 9 info: | 10 Atomics.wait( typedArray, index, value, timeout ) 11 12 3.Let v be ? ToInt32(value). 13 ... 14 14.If v is not equal to w, then 15 a.Perform LeaveCriticalSection(WL). 16 b. Return the String "not-equal". 17 18 includes: [atomicsHelper.js] 19 features: [Atomics, SharedArrayBuffer, TypedArray] 20 ---*/ 21 22 const RUNNING = 1; 23 24 var value = 42; 25 26 $262.agent.start(` 27 $262.agent.receiveBroadcast(function(sab) { 28 const i32a = new Int32Array(sab); 29 Atomics.add(i32a, ${RUNNING}, 1); 30 31 $262.agent.report(Atomics.store(i32a, 0, ${value})); 32 $262.agent.report(Atomics.wait(i32a, 0, 0)); 33 $262.agent.leaving(); 34 }); 35 `); 36 37 const i32a = new Int32Array( 38 new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4) 39 ); 40 41 // NB: We don't actually explicitly need to wait for the agent to start in this 42 // test case, we only do it for consistency with other test cases which do 43 // require the main agent to wait and yield control. 44 45 $262.agent.safeBroadcast(i32a); 46 $262.agent.waitUntil(i32a, RUNNING, 1); 47 48 // Try to yield control to ensure the agent actually started to wait. 49 $262.agent.tryYield(); 50 51 assert.sameValue( 52 $262.agent.getReport(), 53 value.toString(), 54 '$262.agent.getReport() returns value.toString()' 55 ); 56 assert.sameValue( 57 $262.agent.getReport(), 58 'not-equal', 59 '$262.agent.getReport() returns "not-equal"' 60 ); 61 62 reportCompare(0, 0);