tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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null-for-timeout-agent.js (3307B)

      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  null timeout arg should result in an +0 timeout
      8 info: |
      9  Atomics.waitAsync( typedArray, index, value, timeout )
     10 
     11  1. Return DoWait(async, typedArray, index, value, timeout).
     12 
     13  DoWait ( mode, typedArray, index, value, timeout )
     14 
     15  6. Let q be ? ToNumber(timeout).
     16 
     17    Null -> Return +0.
     18 
     19 flags: [async]
     20 includes: [atomicsHelper.js]
     21 features: [Atomics.waitAsync, SharedArrayBuffer, TypedArray, Atomics, BigInt, arrow-function, async-functions]
     22 ---*/
     23 assert.sameValue(typeof Atomics.waitAsync, 'function', 'The value of `typeof Atomics.waitAsync` is "function"');
     24 const RUNNING = 1;
     25 
     26 $262.agent.start(`
     27  const valueOf = {
     28    valueOf() {
     29      return null;
     30    }
     31  };
     32 
     33  const toPrimitive = {
     34    [Symbol.toPrimitive]() {
     35      return null;
     36    }
     37  };
     38 
     39  $262.agent.receiveBroadcast(async (sab) => {
     40    const i64a = new BigInt64Array(sab);
     41    Atomics.add(i64a, ${RUNNING}, 1n);
     42    $262.agent.report(await Atomics.waitAsync(i64a, 0, 0n, null).value);
     43    $262.agent.report(await Atomics.waitAsync(i64a, 0, 0n, valueOf).value);
     44    $262.agent.report(await Atomics.waitAsync(i64a, 0, 0n, toPrimitive).value);
     45    $262.agent.report(Atomics.waitAsync(i64a, 0, 0n, null).value);
     46    $262.agent.report(Atomics.waitAsync(i64a, 0, 0n, valueOf).value);
     47    $262.agent.report(Atomics.waitAsync(i64a, 0, 0n, toPrimitive).value);
     48    $262.agent.leaving();
     49  });
     50 `);
     51 
     52 const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4));
     53 
     54 $262.agent.safeBroadcastAsync(i64a, RUNNING, 1n).then(async agentCount => {
     55  assert.sameValue(agentCount, 1n, 'The value of `agentCount` is 1n');
     56 
     57  assert.sameValue(
     58    await $262.agent.getReportAsync(),
     59    'timed-out',
     60    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     61  );
     62 
     63  assert.sameValue(
     64    await $262.agent.getReportAsync(),
     65    'timed-out',
     66    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     67  );
     68 
     69  assert.sameValue(
     70    await $262.agent.getReportAsync(),
     71    'timed-out',
     72    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     73  );
     74 
     75  assert.sameValue(
     76    await $262.agent.getReportAsync(),
     77    'timed-out',
     78    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     79  );
     80 
     81  assert.sameValue(
     82    await $262.agent.getReportAsync(),
     83    'timed-out',
     84    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     85  );
     86 
     87  assert.sameValue(
     88    await $262.agent.getReportAsync(),
     89    'timed-out',
     90    '(await $262.agent.getReportAsync()) resolves to the value "timed-out"'
     91  );
     92 
     93  assert.sameValue(
     94    Atomics.notify(i64a, 0),
     95    0,
     96    'Atomics.notify(new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4)), 0) must return 0'
     97  );
     98 }).then($DONE, $DONE);