tor-browser

The Tor Browser
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test_HeapSnapshot_takeCensus_05.js (839B)

      1 /* Any copyright is dedicated to the Public Domain.
      2   http://creativecommons.org/publicdomain/zero/1.0/ */
      3 
      4 // Test that HeapSnapshot.prototype.takeCensus finds cross compartment
      5 // wrapper GC roots.
      6 //
      7 // Ported from js/src/jit-test/tests/debug/Memory-takeCensus-05.js
      8 
      9 /* eslint-disable strict */
     10 function run_test() {
     11  const g = newGlobal();
     12  const dbg = new Debugger(g);
     13 
     14  equal(
     15    "AllocationMarker" in saveHeapSnapshotAndTakeCensus(dbg).objects,
     16    false,
     17    "No allocation markers should exist in the census."
     18  );
     19 
     20  this.ccw = g.allocationMarker();
     21 
     22  const census = saveHeapSnapshotAndTakeCensus(dbg);
     23  equal(
     24    census.objects.AllocationMarker.count,
     25    1,
     26    "Should have one allocation marker in the census, because there " +
     27      "is one cross-compartment wrapper referring to it."
     28  );
     29 
     30  do_test_finished();
     31 }