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Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: devtools/shared/heapsnapshot/tests/xpcshell/xpcshell.toml
/* Any copyright is dedicated to the Public Domain.
"use strict";
// Check HeapSnapshot.prototype.takeCensus handling of 'breakdown' argument.
//
// Ported from js/src/jit-test/tests/debug/Memory-takeCensus-06.js
function run_test() {
const Pattern = Match.Pattern;
const g = newGlobal();
const dbg = new Debugger(g);
Pattern({ count: Pattern.NATURAL, bytes: Pattern.NATURAL }).assert(
saveHeapSnapshotAndTakeCensus(dbg, { breakdown: { by: "count" } })
);
let census = saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: { by: "count", count: false, bytes: false },
});
equal("count" in census, false);
equal("bytes" in census, false);
census = saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: { by: "count", count: true, bytes: false },
});
equal("count" in census, true);
equal("bytes" in census, false);
census = saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: { by: "count", count: false, bytes: true },
});
equal("count" in census, false);
equal("bytes" in census, true);
census = saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: { by: "count", count: true, bytes: true },
});
equal("count" in census, true);
equal("bytes" in census, true);
// Pattern doesn't mind objects with extra properties, so we'll restrict this
// list to the object classes we're pretty sure are going to stick around for
// the forseeable future.
Pattern({
Function: { count: Pattern.NATURAL },
Object: { count: Pattern.NATURAL },
DebuggerPrototype: { count: Pattern.NATURAL },
Sandbox: { count: Pattern.NATURAL },
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, { breakdown: { by: "objectClass" } })
);
Pattern({
objects: { count: Pattern.NATURAL },
scripts: { count: Pattern.NATURAL },
strings: { count: Pattern.NATURAL },
other: { count: Pattern.NATURAL },
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, { breakdown: { by: "coarseType" } })
);
// As for { by: 'objectClass' }, restrict our pattern to the types
// we predict will stick around for a long time.
Pattern({
JSString: { count: Pattern.NATURAL },
"js::Shape": { count: Pattern.NATURAL },
JSObject: { count: Pattern.NATURAL },
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, { breakdown: { by: "internalType" } })
);
// Nested breakdowns.
const coarseTypePattern = {
objects: { count: Pattern.NATURAL },
scripts: { count: Pattern.NATURAL },
strings: { count: Pattern.NATURAL },
other: { count: Pattern.NATURAL },
};
Pattern({
JSString: coarseTypePattern,
"js::Shape": coarseTypePattern,
JSObject: coarseTypePattern,
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: { by: "internalType", then: { by: "coarseType" } },
})
);
Pattern({
Function: { count: Pattern.NATURAL },
Object: { count: Pattern.NATURAL },
DebuggerPrototype: { count: Pattern.NATURAL },
Sandbox: { count: Pattern.NATURAL },
other: coarseTypePattern,
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: {
by: "objectClass",
then: { by: "count" },
other: { by: "coarseType" },
},
})
);
Pattern({
objects: { count: Pattern.NATURAL, label: "object" },
scripts: { count: Pattern.NATURAL, label: "scripts" },
strings: { count: Pattern.NATURAL, label: "strings" },
other: { count: Pattern.NATURAL, label: "other" },
}).assert(
saveHeapSnapshotAndTakeCensus(dbg, {
breakdown: {
by: "coarseType",
objects: { by: "count", label: "object" },
scripts: { by: "count", label: "scripts" },
strings: { by: "count", label: "strings" },
other: { by: "count", label: "other" },
},
})
);
do_test_finished();
}