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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/heap/embedder-tracing.h"
#include "src/heap/heap.h"
#include "test/unittests/test-utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
using LocalEmbedderHeapTracerWithIsolate = TestWithIsolate;
namespace heap {
using testing::StrictMock;
using testing::_;
using testing::Return;
using v8::EmbedderHeapTracer;
using v8::internal::LocalEmbedderHeapTracer;
namespace {
LocalEmbedderHeapTracer::WrapperInfo CreateWrapperInfo() {
return LocalEmbedderHeapTracer::WrapperInfo(nullptr, nullptr);
}
} // namespace
class MockEmbedderHeapTracer : public EmbedderHeapTracer {
public:
MOCK_METHOD1(TracePrologue, void(EmbedderHeapTracer::TraceFlags));
MOCK_METHOD1(TraceEpilogue, void(EmbedderHeapTracer::TraceSummary*));
MOCK_METHOD1(EnterFinalPause, void(EmbedderHeapTracer::EmbedderStackState));
MOCK_METHOD0(IsTracingDone, bool());
MOCK_METHOD1(RegisterV8References,
void(const std::vector<std::pair<void*, void*> >&));
MOCK_METHOD1(AdvanceTracing, bool(double deadline_in_ms));
};
TEST(LocalEmbedderHeapTracer, InUse) {
MockEmbedderHeapTracer mock_remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&mock_remote_tracer);
EXPECT_TRUE(local_tracer.InUse());
}
TEST(LocalEmbedderHeapTracer, NoRemoteTracer) {
LocalEmbedderHeapTracer local_tracer(nullptr);
// We should be able to call all functions without a remote tracer being
// attached.
EXPECT_FALSE(local_tracer.InUse());
local_tracer.TracePrologue(EmbedderHeapTracer::TraceFlags::kNoFlags);
local_tracer.EnterFinalPause();
bool done = local_tracer.Trace(std::numeric_limits<double>::infinity());
EXPECT_TRUE(done);
local_tracer.TraceEpilogue();
}
TEST(LocalEmbedderHeapTracer, TracePrologueForwards) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer, TracePrologue(_));
local_tracer.TracePrologue(EmbedderHeapTracer::TraceFlags::kNoFlags);
}
TEST(LocalEmbedderHeapTracer, TracePrologueForwardsMemoryReducingFlag) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer,
TracePrologue(EmbedderHeapTracer::TraceFlags::kReduceMemory));
local_tracer.TracePrologue(EmbedderHeapTracer::TraceFlags::kReduceMemory);
}
TEST(LocalEmbedderHeapTracer, TraceEpilogueForwards) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer, TraceEpilogue(_));
local_tracer.TraceEpilogue();
}
TEST(LocalEmbedderHeapTracer, EnterFinalPauseForwards) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer, EnterFinalPause(_));
local_tracer.EnterFinalPause();
}
TEST(LocalEmbedderHeapTracer, IsRemoteTracingDoneForwards) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer, IsTracingDone());
local_tracer.IsRemoteTracingDone();
}
TEST(LocalEmbedderHeapTracer, EnterFinalPauseDefaultStackStateUnkown) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
// The default stack state is expected to be unkown.
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kUnknown));
local_tracer.EnterFinalPause();
}
TEST_F(LocalEmbedderHeapTracerWithIsolate,
EnterFinalPauseStackStateIsForwarded) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
local_tracer.SetEmbedderStackStateForNextFinalization(
EmbedderHeapTracer::kEmpty);
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kEmpty));
local_tracer.EnterFinalPause();
}
TEST_F(LocalEmbedderHeapTracerWithIsolate, TemporaryEmbedderStackState) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
// Default is unknown, see above.
{
EmbedderStackStateScope scope(&local_tracer, EmbedderHeapTracer::kEmpty);
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kEmpty));
local_tracer.EnterFinalPause();
}
}
TEST_F(LocalEmbedderHeapTracerWithIsolate,
TemporaryEmbedderStackStateRestores) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
// Default is unknown, see above.
{
EmbedderStackStateScope scope(&local_tracer, EmbedderHeapTracer::kEmpty);
{
EmbedderStackStateScope scope(&local_tracer,
EmbedderHeapTracer::kUnknown);
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kUnknown));
local_tracer.EnterFinalPause();
}
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kEmpty));
local_tracer.EnterFinalPause();
}
}
TEST_F(LocalEmbedderHeapTracerWithIsolate, EnterFinalPauseStackStateResets) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
local_tracer.SetEmbedderStackStateForNextFinalization(
EmbedderHeapTracer::kEmpty);
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kEmpty));
local_tracer.EnterFinalPause();
EXPECT_CALL(remote_tracer, EnterFinalPause(EmbedderHeapTracer::kUnknown));
local_tracer.EnterFinalPause();
}
TEST(LocalEmbedderHeapTracer, IsRemoteTracingDoneIncludesRemote) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_CALL(remote_tracer, IsTracingDone());
local_tracer.IsRemoteTracingDone();
}
TEST(LocalEmbedderHeapTracer, RegisterV8ReferencesWithRemoteTracer) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(nullptr);
local_tracer.SetRemoteTracer(&remote_tracer);
{
LocalEmbedderHeapTracer::ProcessingScope scope(&local_tracer);
scope.AddWrapperInfoForTesting(CreateWrapperInfo());
EXPECT_CALL(remote_tracer, RegisterV8References(_));
}
EXPECT_CALL(remote_tracer, IsTracingDone()).WillOnce(Return(false));
EXPECT_FALSE(local_tracer.IsRemoteTracingDone());
}
TEST_F(LocalEmbedderHeapTracerWithIsolate, SetRemoteTracerSetsIsolate) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_EQ(isolate(), reinterpret_cast<Isolate*>(remote_tracer.isolate()));
}
TEST_F(LocalEmbedderHeapTracerWithIsolate, DestructorClearsIsolate) {
StrictMock<MockEmbedderHeapTracer> remote_tracer;
{
LocalEmbedderHeapTracer local_tracer(isolate());
local_tracer.SetRemoteTracer(&remote_tracer);
EXPECT_EQ(isolate(), reinterpret_cast<Isolate*>(remote_tracer.isolate()));
}
EXPECT_EQ(nullptr, remote_tracer.isolate());
}
} // namespace heap
} // namespace internal
} // namespace v8
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