tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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growable-sab-over-mailbox.js (1032B)

      1 var gsab = new SharedArrayBuffer(4, {maxByteLength: 16});
      2 
      3 // Test byte lengths are correct.
      4 assertEq(gsab.byteLength, 4);
      5 assertEq(gsab.maxByteLength, 16);
      6 
      7 // Pass |gsab| to the mailbox.
      8 setSharedObject(gsab);
      9 
     10 // Retrieve again from the mailbox to create a new growable shared array buffer
     11 // which points to the same memory.
     12 var gsab2 = getSharedObject();
     13 
     14 assertEq(gsab !== gsab2, true, "different objects expected");
     15 
     16 // Byte lengths are correct for both objects.
     17 assertEq(gsab.byteLength, 4);
     18 assertEq(gsab.maxByteLength, 16);
     19 assertEq(gsab2.byteLength, 4);
     20 assertEq(gsab2.maxByteLength, 16);
     21 
     22 // Grow the original object.
     23 gsab.grow(6);
     24 
     25 // Byte lengths are correct for both objects.
     26 assertEq(gsab.byteLength, 6);
     27 assertEq(gsab.maxByteLength, 16);
     28 assertEq(gsab2.byteLength, 6);
     29 assertEq(gsab2.maxByteLength, 16);
     30 
     31 // Grow the copy.
     32 gsab2.grow(8);
     33 
     34 // Byte lengths are correct for both objects.
     35 assertEq(gsab.byteLength, 8);
     36 assertEq(gsab.maxByteLength, 16);
     37 assertEq(gsab2.byteLength, 8);
     38 assertEq(gsab2.maxByteLength, 16);