src/trace_processor/proto_trace_parser_unittest.cc

/*
 * Copyright (C) 2018 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 "src/trace_processor/proto_trace_tokenizer.h"

#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "perfetto/base/string_view.h"
#include "src/trace_processor/process_tracker.h"
#include "src/trace_processor/proto_trace_parser.h"
#include "src/trace_processor/sched_tracker.h"
#include "src/trace_processor/trace_sorter.h"

#include "perfetto/trace/trace.pb.h"
#include "perfetto/trace/trace_packet.pb.h"

namespace perfetto {
namespace trace_processor {
namespace {

using ::testing::_;
using ::testing::Args;
using ::testing::ElementsAreArray;
using ::testing::Eq;
using ::testing::Pointwise;

class MockSchedTracker : public SchedTracker {
 public:
  MockSchedTracker(TraceProcessorContext* context) : SchedTracker(context) {}
  virtual ~MockSchedTracker() = default;

  MOCK_METHOD6(PushSchedSwitch,
               void(uint32_t cpu,
                    uint64_t timestamp,
                    uint32_t prev_pid,
                    uint32_t prev_state,
                    base::StringView prev_comm,
                    uint32_t next_pid));

  MOCK_METHOD5(PushCounter,
               void(uint64_t timestamp,
                    double value,
                    StringId name_id,
                    uint64_t ref,
                    RefType ref_type));
};

class MockProcessTracker : public ProcessTracker {
 public:
  MockProcessTracker(TraceProcessorContext* context)
      : ProcessTracker(context) {}

  MOCK_METHOD2(UpdateProcess,
               UniquePid(uint32_t pid, base::StringView process_name));

  MOCK_METHOD2(UpdateThread, UniqueTid(uint32_t tid, uint32_t tgid));
};

class MockTraceStorage : public TraceStorage {
 public:
  MockTraceStorage() : TraceStorage() {}

  MOCK_METHOD1(InternString, StringId(base::StringView));
};

class ProtoTraceParserTest : public ::testing::Test {
 public:
  ProtoTraceParserTest() {
    storage_ = new MockTraceStorage();
    context_.storage.reset(storage_);
    sched_ = new MockSchedTracker(&context_);
    context_.sched_tracker.reset(sched_);
    process_ = new MockProcessTracker(&context_);
    context_.process_tracker.reset(process_);
    const auto optim = OptimizationMode::kMinLatency;
    context_.sorter.reset(new TraceSorter(&context_, optim, 0 /*window size*/));
    context_.proto_parser.reset(new ProtoTraceParser(&context_));
  }

  void Tokenize(const protos::Trace& trace) {
    std::unique_ptr<uint8_t[]> raw_trace(new uint8_t[trace.ByteSize()]);
    trace.SerializeToArray(raw_trace.get(), trace.ByteSize());
    ProtoTraceTokenizer tokenizer(&context_);
    tokenizer.Parse(std::move(raw_trace),
                    static_cast<size_t>(trace.ByteSize()));
  }

 protected:
  TraceProcessorContext context_;
  MockSchedTracker* sched_;
  MockProcessTracker* process_;
  MockTraceStorage* storage_;
};

TEST_F(ProtoTraceParserTest, LoadSingleEvent) {
  protos::Trace trace;

  auto* bundle = trace.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);

  auto* event = bundle->add_event();
  event->set_timestamp(1000);

  static const char kProcName[] = "proc1";
  auto* sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(10);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName);
  sched_switch->set_next_pid(100);

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1000, 10, 32,
                                       base::StringView(kProcName), 100));
  Tokenize(trace);
}

TEST_F(ProtoTraceParserTest, LoadMultipleEvents) {
  protos::Trace trace;

  auto* bundle = trace.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);

  auto* event = bundle->add_event();
  event->set_timestamp(1000);

  static const char kProcName1[] = "proc1";
  auto* sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(10);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName1);
  sched_switch->set_next_pid(100);

  event = bundle->add_event();
  event->set_timestamp(1001);

  static const char kProcName2[] = "proc2";
  sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(100);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName2);
  sched_switch->set_next_pid(10);

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1000, 10, 32,
                                       base::StringView(kProcName1), 100));

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1001, 100, 32,
                                       base::StringView(kProcName2), 10));

  Tokenize(trace);
}

TEST_F(ProtoTraceParserTest, LoadMultiplePackets) {
  protos::Trace trace;

  auto* bundle = trace.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);

  auto* event = bundle->add_event();
  event->set_timestamp(1000);

  static const char kProcName1[] = "proc1";
  auto* sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(10);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName1);
  sched_switch->set_next_pid(100);

  bundle = trace.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);

  event = bundle->add_event();
  event->set_timestamp(1001);

  static const char kProcName2[] = "proc2";
  sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(100);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName2);
  sched_switch->set_next_pid(10);

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1000, 10, 32,
                                       base::StringView(kProcName1), 100));

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1001, 100, 32,
                                       base::StringView(kProcName2), 10));
  Tokenize(trace);
}

TEST_F(ProtoTraceParserTest, RepeatedLoadSinglePacket) {
  protos::Trace trace_1;
  auto* bundle = trace_1.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);
  auto* event = bundle->add_event();
  event->set_timestamp(1000);
  static const char kProcName1[] = "proc1";
  auto* sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(10);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName1);
  sched_switch->set_next_pid(100);

  protos::Trace trace_2;
  bundle = trace_2.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(10);
  event = bundle->add_event();
  event->set_timestamp(1001);
  static const char kProcName2[] = "proc2";
  sched_switch = event->mutable_sched_switch();
  sched_switch->set_prev_pid(100);
  sched_switch->set_prev_state(32);
  sched_switch->set_prev_comm(kProcName2);
  sched_switch->set_next_pid(10);

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1000, 10, 32,
                                       base::StringView(kProcName1), 100));
  Tokenize(trace_1);

  EXPECT_CALL(*sched_, PushSchedSwitch(10, 1001, 100, 32,
                                       base::StringView(kProcName2), 10));
  Tokenize(trace_2);
}

TEST_F(ProtoTraceParserTest, LoadCpuFreq) {
  protos::Trace trace_1;
  auto* bundle = trace_1.add_packet()->mutable_ftrace_events();
  bundle->set_cpu(12);
  auto* event = bundle->add_event();
  event->set_timestamp(1000);
  auto* cpu_freq = event->mutable_cpu_frequency();
  cpu_freq->set_cpu_id(10);
  cpu_freq->set_state(2000);

  EXPECT_CALL(*sched_, PushCounter(1000, 2000, 0, 10, RefType::kCPU_ID));
  Tokenize(trace_1);
}

TEST_F(ProtoTraceParserTest, LoadProcessPacket) {
  protos::Trace trace;

  auto* tree = trace.add_packet()->mutable_process_tree();
  auto* process = tree->add_processes();
  static const char kProcName1[] = "proc1";

  process->add_cmdline(kProcName1);
  process->set_pid(1);
  process->set_ppid(2);

  EXPECT_CALL(*process_, UpdateProcess(1, base::StringView(kProcName1)));
  Tokenize(trace);
}

TEST_F(ProtoTraceParserTest, LoadProcessPacket_FirstCmdline) {
  protos::Trace trace;

  auto* tree = trace.add_packet()->mutable_process_tree();
  auto* process = tree->add_processes();
  static const char kProcName1[] = "proc1";
  static const char kProcName2[] = "proc2";

  process->add_cmdline(kProcName1);
  process->add_cmdline(kProcName2);
  process->set_pid(1);
  process->set_ppid(2);

  EXPECT_CALL(*process_, UpdateProcess(1, base::StringView(kProcName1)));
  Tokenize(trace);
}

TEST_F(ProtoTraceParserTest, LoadThreadPacket) {
  protos::Trace trace;

  auto* tree = trace.add_packet()->mutable_process_tree();
  auto* thread = tree->add_threads();
  thread->set_tid(1);
  thread->set_tgid(2);

  EXPECT_CALL(*process_, UpdateThread(1, 2));
  Tokenize(trace);
}

TEST(SystraceParserTest, SystraceEvent) {
  SystraceTracePoint result{};
  ASSERT_TRUE(ParseSystraceTracePoint(base::StringView("B|1|foo"), &result));
  EXPECT_EQ(result, (SystraceTracePoint{'B', 1, base::StringView("foo"), 0}));

  ASSERT_TRUE(ParseSystraceTracePoint(base::StringView("B|42|Bar"), &result));
  EXPECT_EQ(result, (SystraceTracePoint{'B', 42, base::StringView("Bar"), 0}));

  ASSERT_TRUE(
      ParseSystraceTracePoint(base::StringView("C|543|foo|8"), &result));
  EXPECT_EQ(result, (SystraceTracePoint{'C', 543, base::StringView("foo"), 8}));
}

}  // namespace
}  // namespace trace_processor
}  // namespace perfetto