tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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false-for-timeout-agent.js (2103B)

      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  False timeout arg should result in an +0 timeout
      9 info: |
     10  Atomics.wait( typedArray, index, value, timeout )
     11 
     12  4. Let q be ? ToNumber(timeout).
     13 
     14    Boolean -> If argument is true, return 1. If argument is false, return +0.
     15 
     16 includes: [atomicsHelper.js]
     17 features: [Atomics, SharedArrayBuffer, TypedArray]
     18 ---*/
     19 
     20 const RUNNING = 1;
     21 
     22 $262.agent.start(`
     23  const valueOf = {
     24    valueOf: function() {
     25      return false;
     26    }
     27  };
     28 
     29  const toPrimitive = {
     30    [Symbol.toPrimitive]: function() {
     31      return false;
     32    }
     33  };
     34 
     35  $262.agent.receiveBroadcast(function(sab) {
     36    const i32a = new Int32Array(sab);
     37    Atomics.add(i32a, ${RUNNING}, 1);
     38 
     39    const status1 = Atomics.wait(i32a, 0, 0, false);
     40    const status2 = Atomics.wait(i32a, 0, 0, valueOf);
     41    const status3 = Atomics.wait(i32a, 0, 0, toPrimitive);
     42 
     43    $262.agent.report(status1);
     44    $262.agent.report(status2);
     45    $262.agent.report(status3);
     46    $262.agent.leaving();
     47  });
     48 `);
     49 
     50 const i32a = new Int32Array(
     51  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
     52 );
     53 
     54 $262.agent.safeBroadcast(i32a);
     55 $262.agent.waitUntil(i32a, RUNNING, 1);
     56 
     57 // Try to yield control to ensure the agent actually started to wait.
     58 $262.agent.tryYield();
     59 
     60 assert.sameValue(
     61  $262.agent.getReport(),
     62  'timed-out',
     63  '$262.agent.getReport() returns "timed-out"'
     64 );
     65 assert.sameValue(
     66  $262.agent.getReport(),
     67  'timed-out',
     68  '$262.agent.getReport() returns "timed-out"'
     69 );
     70 assert.sameValue(
     71  $262.agent.getReport(),
     72  'timed-out',
     73  '$262.agent.getReport() returns "timed-out"'
     74 );
     75 
     76 assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(i32a, 0) returns 0');
     77 
     78 reportCompare(0, 0);