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/* 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();
}
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