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 17 using webrtc::CpuMeasurementHarness; 18 using webrtc::Trace; 19 using webrtc::kTraceWarning; 20 using webrtc::kTraceUtility; 21 22 class 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. 46 TEST(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
