was-woken-before-timeout.js (2263B)
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, arrow-function, async-functions] 12 ---*/ 13 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"'); 14 15 const RUNNING = 1; 16 const TIMEOUT = $262.agent.timeouts.huge; 17 18 const i32a = new Int32Array( 19 new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4) 20 ); 21 22 $262.agent.start(` 23 $262.agent.receiveBroadcast(async (sab) => { 24 const i32a = new Int32Array(sab); 25 Atomics.add(i32a, ${RUNNING}, 1); 26 27 const before = $262.agent.monotonicNow(); 28 const unpark = await Atomics.waitAsync(i32a, 0, 0, ${TIMEOUT}).value; 29 const duration = $262.agent.monotonicNow() - before; 30 31 $262.agent.report(duration); 32 $262.agent.report(unpark); 33 $262.agent.leaving(); 34 }); 35 `); 36 37 $262.agent.safeBroadcastAsync(i32a, RUNNING, 1).then(async (agentCount) => { 38 39 assert.sameValue(agentCount, 1, 'The value of `agentCount` is 1'); 40 assert.sameValue(Atomics.notify(i32a, 0), 1, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0) must return 1'); 41 42 let lapse = await $262.agent.getReportAsync(); 43 44 assert( 45 lapse < TIMEOUT, 46 'The result of evaluating `(lapse < TIMEOUT)` is true' 47 ); 48 49 assert.sameValue( 50 await $262.agent.getReportAsync(), 51 'ok', 52 '(await $262.agent.getReportAsync()) resolves to the value "ok"' 53 ); 54 assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(new Int32Array(new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)), 0) must return 0'); 55 }).then($DONE, $DONE);