diff options
Diffstat (limited to 'js/src/jit-test/tests/saved-stacks/gc-frame-cache.js')
-rw-r--r-- | js/src/jit-test/tests/saved-stacks/gc-frame-cache.js | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/saved-stacks/gc-frame-cache.js b/js/src/jit-test/tests/saved-stacks/gc-frame-cache.js new file mode 100644 index 0000000000..cf2646f471 --- /dev/null +++ b/js/src/jit-test/tests/saved-stacks/gc-frame-cache.js @@ -0,0 +1,87 @@ +// Test that SavedFrame instances get removed from the SavedStacks frames cache +// after a GC. + +const FUZZ_FACTOR = 3; + +function isAboutEq(actual, expected) { + return Math.abs(actual - expected) <= FUZZ_FACTOR; +} + +var stacks = []; + +(function () { + // Use an IIFE here so that we don't keep these saved stacks alive in the + // frame cache when we test that they all go away at the end of the test. + + var startCount = getSavedFrameCount(); + print("startCount = " + startCount); + + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + stacks.push(saveStack()); + + gc(); + + var endCount = getSavedFrameCount(); + print("endCount = " + endCount); + + assertEq(isAboutEq(endCount - startCount, 50), true); +}()); + +while (stacks.length) { + stacks.pop(); +} +gc(); + +stacks = null; +gc(); + +assertEq(isAboutEq(getSavedFrameCount(), 0), true); |