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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_10.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_10.js | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_10.js b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_10.js new file mode 100644 index 0000000000..9b0e0f8c74 --- /dev/null +++ b/devtools/shared/heapsnapshot/tests/xpcshell/test_HeapSnapshot_takeCensus_10.js @@ -0,0 +1,74 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ +"use strict"; + +// Check byte counts produced by takeCensus. +// +// Note that tracking allocation sites adds unique IDs to objects which +// increases their size, making it hard to test reported sizes exactly. +// +// Ported from js/src/jit-test/tests/debug/Memory-take Census-10.js + +function run_test() { + const g = newGlobal(); + const dbg = new Debugger(g); + + const sizeOfAM = byteSize(allocationMarker()); + + // Allocate a single allocation marker, and check that we can find it. + g.eval("var hold = allocationMarker();"); + let census = saveHeapSnapshotAndTakeCensus(dbg, { + breakdown: { by: "objectClass" }, + }); + equal(census.AllocationMarker.count, 1); + equal(census.AllocationMarker.bytes >= sizeOfAM, true); + g.hold = null; + + g.eval(` // 1 + var objs = []; // 2 + function fnerd() { // 3 + objs.push(allocationMarker()); // 4 + for (let i = 0; i < 10; i++) // 5 + objs.push(allocationMarker()); // 6 + } // 7 + `); + + dbg.memory.allocationSamplingProbability = 1; + dbg.memory.trackingAllocationSites = true; + g.fnerd(); + dbg.memory.trackingAllocationSites = false; + + census = saveHeapSnapshotAndTakeCensus(dbg, { + breakdown: { by: "objectClass", then: { by: "allocationStack" } }, + }); + + let seen = 0; + census.AllocationMarker.forEach((v, k) => { + equal(k.functionDisplayName, "fnerd"); + switch (k.line) { + case 4: + equal(v.count, 1); + equal(v.bytes >= sizeOfAM, true); + seen++; + break; + + case 6: + equal(v.count, 10); + equal(v.bytes >= 10 * sizeOfAM, true); + seen++; + break; + + default: + dumpn("Unexpected stack:"); + k.toString() + .split(/\n/g) + .forEach(s => dumpn(s)); + ok(false); + break; + } + }); + + equal(seen, 2); + + do_test_finished(); +} |