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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Test that heap snapshots cross compartment boundaries when expected.
#include "DevTools.h"
DEF_TEST(DoesCrossCompartmentBoundaries, {
// Create a new global to get a new compartment.
JS::RealmOptions options;
// dummy
options.behaviors().setReduceTimerPrecisionCallerType(
JS::RTPCallerTypeToken{0});
JS::Rooted<JSObject*> newGlobal(
cx, JS_NewGlobalObject(cx, getGlobalClass(), nullptr,
JS::FireOnNewGlobalHook, options));
ASSERT_TRUE(newGlobal);
JS::Compartment* newCompartment = nullptr;
{
JSAutoRealm ar(cx, newGlobal);
ASSERT_TRUE(JS::InitRealmStandardClasses(cx));
newCompartment = js::GetContextCompartment(cx);
}
ASSERT_TRUE(newCompartment);
ASSERT_NE(newCompartment, compartment);
// Our set of target compartments is both the old and new compartments.
JS::CompartmentSet targetCompartments;
ASSERT_TRUE(targetCompartments.put(compartment));
ASSERT_TRUE(targetCompartments.put(newCompartment));
FakeNode nodeA;
FakeNode nodeB;
FakeNode nodeC;
FakeNode nodeD;
nodeA.compartment = compartment;
nodeB.compartment = nullptr;
nodeC.compartment = newCompartment;
nodeD.compartment = nullptr;
AddEdge(nodeA, nodeB);
AddEdge(nodeA, nodeC);
AddEdge(nodeB, nodeD);
::testing::NiceMock<MockWriter> writer;
// Should serialize nodeA, because it is in one of our target compartments.
ExpectWriteNode(writer, nodeA);
// Should serialize nodeB, because it doesn't belong to a compartment and is
// therefore assumed to be shared.
ExpectWriteNode(writer, nodeB);
// Should also serialize nodeC, which is in our target compartments, but a
// different compartment than A.
ExpectWriteNode(writer, nodeC);
// Should serialize nodeD because it's reachable via B and both nodes B and D
// don't belong to a specific compartment.
ExpectWriteNode(writer, nodeD);
JS::AutoCheckCannotGC noGC(cx);
ASSERT_TRUE(WriteHeapGraph(cx, JS::ubi::Node(&nodeA), writer,
/* wantNames = */ false, &targetCompartments,
noGC));
});
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