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author | Matt A. Tobin <email@mattatobin.com> | 2020-02-22 17:32:39 -0500 |
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committer | Matt A. Tobin <email@mattatobin.com> | 2020-02-22 17:32:39 -0500 |
commit | 4e2e9be6abed3225406b466099e397acc0f914d2 (patch) | |
tree | 023551018892b8e76ae80e63a08d9d6a27c21a77 /dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js | |
parent | a7888b8cf20691a4090715ab9b055ec3cb75f5e8 (diff) | |
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Reclassify heapsnapshot and nsJSInspector as not part of devtools
This resolves Issue #316
Diffstat (limited to 'dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js')
-rw-r--r-- | dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js new file mode 100644 index 000000000..799844cde --- /dev/null +++ b/dom/heapsnapshot/tests/unit/test_HeapSnapshot_takeCensus_04.js @@ -0,0 +1,36 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ + +// Test that HeapSnapshot.prototype.takeCensus finds GC roots that are on the +// stack. +// +// Ported from js/src/jit-test/tests/debug/Memory-takeCensus-04.js + +function run_test() { + var g = newGlobal(); + var dbg = new Debugger(g); + + g.eval(` +function withAllocationMarkerOnStack(f) { + (function () { + var onStack = allocationMarker(); + f(); + }()); +} +`); + + equal("AllocationMarker" in saveHeapSnapshotAndTakeCensus(dbg).objects, false, + "There shouldn't exist any allocation markers in the census."); + + var allocationMarkerCount; + g.withAllocationMarkerOnStack(() => { + const census = saveHeapSnapshotAndTakeCensus(dbg); + allocationMarkerCount = census.objects.AllocationMarker.count; + }); + + equal(allocationMarkerCount, 1, + "Should have one allocation marker in the census, because there " + + "was one on the stack."); + + do_test_finished(); +} |