1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#include "system_wrappers/interface/trace.h"
12
13#include "gtest/gtest.h"
14#include "system_wrappers/source/cpu_measurement_harness.h"
15#include "testsupport/fileutils.h"
16
17using webrtc::CpuMeasurementHarness;
18using webrtc::Trace;
19using webrtc::kTraceWarning;
20using webrtc::kTraceUtility;
21
22class Logger : public webrtc::CpuTarget {
23 public:
24  Logger() {
25    Trace::CreateTrace();
26    std::string trace_file = webrtc::test::OutputPath() +
27        "trace_unittest.txt";
28    Trace::SetTraceFile(trace_file.c_str());
29    Trace::SetLevelFilter(webrtc::kTraceAll);
30  }
31  virtual ~Logger() {
32    Trace::ReturnTrace();
33  }
34
35  virtual bool DoWork() {
36    // Use input paremeters to WEBRTC_TRACE that are not likely to be removed
37    // in future code. E.g. warnings will likely be kept and this file is in
38    // utility so it should use kTraceUtility.
39    WEBRTC_TRACE(kTraceWarning, kTraceUtility, 0, "Log line");
40    return true;
41  }
42};
43
44// This test is disabled because it measures CPU usage. This is flaky because
45// the CPU usage for a machine may spike due to OS or other application.
46TEST(TraceTest, DISABLED_CpuUsage) {
47  Logger logger;
48  const int periodicity_ms = 1;
49  const int iterations_per_period = 10;
50  const int duration_ms = 1000;
51  CpuMeasurementHarness* cpu_harness =
52      CpuMeasurementHarness::Create(&logger, periodicity_ms,
53                                    iterations_per_period, duration_ms);
54  cpu_harness->Run();
55  const int average_cpu = cpu_harness->AverageCpu();
56  EXPECT_GE(5, average_cpu);
57}
58