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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/String/ropes.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/String/ropes.js | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/tests/non262/String/ropes.js b/js/src/tests/non262/String/ropes.js new file mode 100644 index 0000000000..b8e99dacb9 --- /dev/null +++ b/js/src/tests/non262/String/ropes.js @@ -0,0 +1,58 @@ +print("Stress test of ropes"); + +if (typeof newRope === "undefined") { + var newRope = SpecialPowers.Cu.getJSTestingFunctions().newRope; +} +if (typeof ensureLinearString === "undefined") { + var ensureLinearString = SpecialPowers.Cu.getJSTestingFunctions().ensureLinearString; +} + +function createRopes() { + const ropes = {}; + + let j = 88; + function advance() { + // This is totally made up and probably stupid. + j = ((((j * 7) >> 2) + j) + (j << 3)) | 0; + return j; + } + + function randomBalancedRope(height) { + if (height == 0) + return "s" + j; + + const left = randomBalancedRope(height - 1); + advance(); + const right = randomBalancedRope(height - 1); + advance(); + return newRope(left, right, {nursery:(j & 1)}); + } + + // Construct a fairly big random rope first. If we did it later, then the + // chances of it all ending up tenured are higher. + ropes.balanced = randomBalancedRope(10); + + ropes.simple = newRope("a", "b"); + ropes.simple_tenured = newRope("a", "b", {nursery:false}); + ropes.tenured_nursery = newRope("a", newRope("b", "c", {nursery:true}), {nursery:false}); + ropes.nursery_tenured = newRope("a", newRope("b", "c", {nursery:false}), {nursery:true}); + + return ropes; +} + +const ropes = createRopes(); + +// Flatten them all. +for (const [name, rope] of Object.entries(ropes)) + ensureLinearString(rope); + +// GC with them all live. +let ropes2 = createRopes(); +gc(); + +// GC with them all dead. +ropes2 = null; +gc(); + +if (typeof reportCompare === "function") + reportCompare(true, true); |