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// Copyright 2016 The Chromium 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 "components/metrics/child_call_stack_profile_collector.h"
#include <memory>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/message_loop/message_loop.h"
#include "base/run_loop.h"
#include "components/metrics/call_stack_profile_params.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "mojo/public/cpp/bindings/interface_request.h"
#include "services/service_manager/public/cpp/interface_provider.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace metrics {
namespace {
} // namespace
class ChildCallStackProfileCollectorTest : public testing::Test {
protected:
class Receiver : public mojom::CallStackProfileCollector {
public:
using CallStackProfile = base::StackSamplingProfiler::CallStackProfile;
Receiver(mojom::CallStackProfileCollectorRequest request)
: binding_(this, std::move(request)) {}
~Receiver() override {}
void Collect(const CallStackProfileParams& params,
base::TimeTicks start_timestamp,
std::vector<CallStackProfile> profiles) override {
this->profiles.push_back(ChildCallStackProfileCollector::ProfilesState(
params,
start_timestamp,
std::move(profiles)));
}
std::vector<ChildCallStackProfileCollector::ProfilesState> profiles;
private:
mojo::Binding<mojom::CallStackProfileCollector> binding_;
DISALLOW_COPY_AND_ASSIGN(Receiver);
};
ChildCallStackProfileCollectorTest()
: receiver_impl_(new Receiver(MakeRequest(&receiver_))) {}
void CollectEmptyProfiles(
const CallStackProfileParams& params,
size_t profile_count) {
base::StackSamplingProfiler::CallStackProfiles profiles;
for (size_t i = 0; i < profile_count; ++i)
profiles.push_back(base::StackSamplingProfiler::CallStackProfile());
child_collector_.GetProfilerCallback(params).Run(std::move(profiles));
}
const std::vector<ChildCallStackProfileCollector::ProfilesState>&
profiles() const {
return child_collector_.profiles_;
}
base::MessageLoop loop_;
mojom::CallStackProfileCollectorPtr receiver_;
std::unique_ptr<Receiver> receiver_impl_;
ChildCallStackProfileCollector child_collector_;
DISALLOW_COPY_AND_ASSIGN(ChildCallStackProfileCollectorTest);
};
// Test the behavior when an interface is provided.
TEST_F(ChildCallStackProfileCollectorTest, InterfaceProvided) {
EXPECT_EQ(0u, profiles().size());
// Add profiles before providing the interface.
CollectEmptyProfiles(
CallStackProfileParams(CallStackProfileParams::BROWSER_PROCESS,
CallStackProfileParams::UI_THREAD,
CallStackProfileParams::JANKY_TASK,
CallStackProfileParams::PRESERVE_ORDER),
2);
ASSERT_EQ(1u, profiles().size());
EXPECT_EQ(CallStackProfileParams::BROWSER_PROCESS,
profiles()[0].params.process);
EXPECT_EQ(CallStackProfileParams::UI_THREAD, profiles()[0].params.thread);
EXPECT_EQ(CallStackProfileParams::JANKY_TASK, profiles()[0].params.trigger);
EXPECT_EQ(CallStackProfileParams::PRESERVE_ORDER,
profiles()[0].params.ordering_spec);
base::TimeTicks start_timestamp = profiles()[0].start_timestamp;
EXPECT_GE(base::TimeDelta::FromMilliseconds(10),
base::TimeTicks::Now() - start_timestamp);
EXPECT_EQ(2u, profiles()[0].profiles.size());
// Set the interface. The profiles should be passed to it.
child_collector_.SetParentProfileCollector(std::move(receiver_));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(0u, profiles().size());
ASSERT_EQ(1u, receiver_impl_->profiles.size());
EXPECT_EQ(CallStackProfileParams::JANKY_TASK,
receiver_impl_->profiles[0].params.trigger);
EXPECT_EQ(CallStackProfileParams::PRESERVE_ORDER,
receiver_impl_->profiles[0].params.ordering_spec);
EXPECT_EQ(start_timestamp, receiver_impl_->profiles[0].start_timestamp);
EXPECT_EQ(2u, receiver_impl_->profiles[0].profiles.size());
// Add profiles after providing the interface. They should also be passed to
// it.
receiver_impl_->profiles.clear();
CollectEmptyProfiles(
CallStackProfileParams(CallStackProfileParams::GPU_PROCESS,
CallStackProfileParams::GPU_MAIN_THREAD,
CallStackProfileParams::THREAD_HUNG,
CallStackProfileParams::PRESERVE_ORDER),
1);
base::RunLoop().RunUntilIdle();
EXPECT_EQ(0u, profiles().size());
ASSERT_EQ(1u, receiver_impl_->profiles.size());
EXPECT_EQ(CallStackProfileParams::GPU_PROCESS,
receiver_impl_->profiles[0].params.process);
EXPECT_EQ(CallStackProfileParams::GPU_MAIN_THREAD,
receiver_impl_->profiles[0].params.thread);
EXPECT_EQ(CallStackProfileParams::THREAD_HUNG,
receiver_impl_->profiles[0].params.trigger);
EXPECT_EQ(CallStackProfileParams::PRESERVE_ORDER,
receiver_impl_->profiles[0].params.ordering_spec);
EXPECT_GE(base::TimeDelta::FromMilliseconds(10),
(base::TimeTicks::Now() -
receiver_impl_->profiles[0].start_timestamp));
EXPECT_EQ(1u, receiver_impl_->profiles[0].profiles.size());
}
TEST_F(ChildCallStackProfileCollectorTest, InterfaceNotProvided) {
EXPECT_EQ(0u, profiles().size());
// Add profiles before providing a null interface.
CollectEmptyProfiles(
CallStackProfileParams(CallStackProfileParams::BROWSER_PROCESS,
CallStackProfileParams::UI_THREAD,
CallStackProfileParams::JANKY_TASK,
CallStackProfileParams::PRESERVE_ORDER),
2);
ASSERT_EQ(1u, profiles().size());
EXPECT_EQ(CallStackProfileParams::BROWSER_PROCESS,
profiles()[0].params.process);
EXPECT_EQ(CallStackProfileParams::UI_THREAD, profiles()[0].params.thread);
EXPECT_EQ(CallStackProfileParams::JANKY_TASK, profiles()[0].params.trigger);
EXPECT_EQ(CallStackProfileParams::PRESERVE_ORDER,
profiles()[0].params.ordering_spec);
EXPECT_GE(base::TimeDelta::FromMilliseconds(10),
base::TimeTicks::Now() - profiles()[0].start_timestamp);
EXPECT_EQ(2u, profiles()[0].profiles.size());
// Set the null interface. The profiles should be flushed.
child_collector_.SetParentProfileCollector(
mojom::CallStackProfileCollectorPtr());
base::RunLoop().RunUntilIdle();
EXPECT_EQ(0u, profiles().size());
// Add profiles after providing a null interface. They should also be flushed.
CollectEmptyProfiles(
CallStackProfileParams(CallStackProfileParams::GPU_PROCESS,
CallStackProfileParams::GPU_MAIN_THREAD,
CallStackProfileParams::THREAD_HUNG,
CallStackProfileParams::PRESERVE_ORDER),
1);
EXPECT_EQ(0u, profiles().size());
}
} // namespace metrics
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