value-not-equal.js (1883B)
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 ? ToBigInt64(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, BigInt, SharedArrayBuffer, TypedArray] 20 ---*/ 21 22 const RUNNING = 1; 23 const value = "42n"; 24 25 const i64a = new BigInt64Array( 26 new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4) 27 ); 28 29 $262.agent.start(` 30 $262.agent.receiveBroadcast(function(sab) { 31 const i64a = new BigInt64Array(sab); 32 Atomics.add(i64a, ${RUNNING}, 1n); 33 34 $262.agent.report(Atomics.store(i64a, 0, ${value})); 35 $262.agent.report(Atomics.wait(i64a, 0, 0n)); 36 $262.agent.leaving(); 37 }); 38 `); 39 40 // NB: We don't actually explicitly need to wait for the agent to start in this 41 // test case, we only do it for consistency with other test cases which do 42 // require the main agent to wait and yield control. 43 44 $262.agent.safeBroadcast(i64a); 45 $262.agent.waitUntil(i64a, RUNNING, 1n); 46 47 // Try to yield control to ensure the agent actually started to wait. 48 $262.agent.tryYield(); 49 50 assert.sameValue( 51 $262.agent.getReport(), 52 '42', 53 '$262.agent.getReport() returns "42"' 54 ); 55 assert.sameValue( 56 $262.agent.getReport(), 57 'not-equal', 58 '$262.agent.getReport() returns "not-equal"' 59 ); 60 61 62 reportCompare(0, 0);