was-woken-before-timeout.js (2353B)
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 esid: sec-atomics.waitasync 6 description: > 7 Test that Atomics.waitAsync returns the right result when it was awoken before 8 a timeout 9 flags: [async] 10 includes: [atomicsHelper.js] 11 features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, BigInt, arrow-function, async-functions] 12 ---*/ 13 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"'); 14 const RUNNING = 1; 15 const TIMEOUT = $262.agent.timeouts.huge; 16 const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)); 17 18 $262.agent.start(` 19 $262.agent.receiveBroadcast(async (sab) => { 20 const i64a = new BigInt64Array(sab); 21 Atomics.add(i64a, ${RUNNING}, 1n); 22 23 const before = $262.agent.monotonicNow(); 24 const unpark = await Atomics.waitAsync(i64a, 0, 0n, ${TIMEOUT}).value; 25 const duration = $262.agent.monotonicNow() - before; 26 27 $262.agent.report(duration); 28 $262.agent.report(unpark); 29 $262.agent.leaving(); 30 }); 31 `); 32 33 $262.agent.safeBroadcastAsync(i64a, RUNNING, 1n).then(async agentCount => { 34 assert.sameValue(agentCount, 1n, 'The value of `agentCount` is 1n'); 35 36 assert.sameValue( 37 Atomics.notify(i64a, 0), 38 1, 39 'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0) must return 1' 40 ); 41 42 const lapse = await $262.agent.getReportAsync(); 43 assert(lapse < TIMEOUT, 'The result of evaluating `(lapse < TIMEOUT)` is true'); 44 const result = await $262.agent.getReportAsync(); 45 assert.sameValue(result, 'ok', 'The value of `result` is "ok"'); 46 assert.sameValue(result, 'ok', 'The value of `result` is "ok"'); 47 48 assert.sameValue( 49 Atomics.notify(i64a, 0), 50 0, 51 'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0) must return 0' 52 ); 53 }).then($DONE, $DONE);