tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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cannot-suspend-throws.js (1088B)

      1 // |reftest| skip-if(xulRuntime.shell||!this.hasOwnProperty('Atomics')||!this.hasOwnProperty('SharedArrayBuffer')||(this.hasOwnProperty('getBuildConfiguration')&&getBuildConfiguration('arm64-simulator'))) -- shell can block main thread, 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 esid: sec-atomics.wait
      6 description: >
      7  Atomics.wait throws if agent cannot be suspended, CanBlock is false
      8 info: |
      9  Assuming [[CanBlock]] is false for the main host.
     10 
     11  Atomics.wait( typedArray, index, value, timeout )
     12 
     13  ... (after args validation)
     14  6. Let B be AgentCanSuspend().
     15  7. If B is false, throw a TypeError exception.
     16  ...
     17 features: [Atomics, BigInt, SharedArrayBuffer, TypedArray]
     18 flags: [CanBlockIsFalse]
     19 ---*/
     20 
     21 const i64a = new BigInt64Array(new SharedArrayBuffer(BigInt64Array.BYTES_PER_ELEMENT * 4));
     22 
     23 assert.throws(TypeError, function() {
     24  Atomics.wait(i64a, 0, 0n, 0);
     25 });
     26 
     27 reportCompare(0, 0);