tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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object-for-timeout-agent.js (2120B)

      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    Null -> 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 0;
     26    }
     27  };
     28 
     29  const toString = {
     30    toString: function() {
     31      return "0";
     32    }
     33  };
     34 
     35  const toPrimitive = {
     36    [Symbol.toPrimitive]: function() {
     37      return 0;
     38    }
     39  };
     40 
     41  $262.agent.receiveBroadcast(function(sab) {
     42    const i32a = new Int32Array(sab);
     43    Atomics.add(i32a, ${RUNNING}, 1);
     44 
     45    const status1 = Atomics.wait(i32a, 0, 0, valueOf);
     46    const status2 = Atomics.wait(i32a, 0, 0, toString);
     47    const status3 = Atomics.wait(i32a, 0, 0, toPrimitive);
     48 
     49    $262.agent.report(status1);
     50    $262.agent.report(status2);
     51    $262.agent.report(status3);
     52    $262.agent.leaving();
     53  });
     54 `);
     55 
     56 const i32a = new Int32Array(
     57  new SharedArrayBuffer(Int32Array.BYTES_PER_ELEMENT * 4)
     58 );
     59 
     60 $262.agent.safeBroadcast(i32a);
     61 $262.agent.waitUntil(i32a, RUNNING, 1);
     62 
     63 // Try to yield control to ensure the agent actually started to wait.
     64 $262.agent.tryYield();
     65 
     66 assert.sameValue(
     67  $262.agent.getReport(),
     68  'timed-out',
     69  '$262.agent.getReport() returns "timed-out"'
     70 );
     71 assert.sameValue(
     72  $262.agent.getReport(),
     73  'timed-out',
     74  '$262.agent.getReport() returns "timed-out"'
     75 );
     76 assert.sameValue(
     77  $262.agent.getReport(),
     78  'timed-out',
     79  '$262.agent.getReport() returns "timed-out"'
     80 );
     81 
     82 assert.sameValue(Atomics.notify(i32a, 0), 0, 'Atomics.notify(i32a, 0) returns 0');
     83 
     84 reportCompare(0, 0);