chromium/third_party/perfetto/src/base/metatrace_unittest.cc

/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <array>
#include <atomic>
#include <chrono>
#include <deque>
#include <thread>

#include "perfetto/ext/base/metatrace.h"
#include "perfetto/ext/base/thread_annotations.h"
#include "src/base/test/test_task_runner.h"
#include "test/gtest_and_gmock.h"

namespace perfetto {
namespace {

m;
Invoke;

class MetatraceTest : public ::testing::Test { … };

TEST_F(MetatraceTest, TagEnablingLogic) { … }

// Test that overruns are handled properly and that the writer re-synchronizes
// after the reader catches up.
TEST_F(MetatraceTest, HandleOverruns) { … }

// Sets up a scenario where the writer writes constantly (however, guaranteeing
// to not overrun) and the reader catches up. Tests that all events are seen
// consistently without gaps.
TEST_F(MetatraceTest, InterleavedReadWrites) { … }

// Try to hit potential thread races:
// - Test that the read callback is posted only once per cycle.
// - Test that the final size of the ring buffeer is sane.
// - Test that event records are consistent within each thread's event stream.
TEST_F(MetatraceTest, ThreadRaces) { … }

}  // namespace
}  // namespace perfetto