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/cpu_wrapper.h"
12
13#include "gtest/gtest.h"
14#include "system_wrappers/interface/cpu_info.h"
15#include "system_wrappers/interface/event_wrapper.h"
16#include "system_wrappers/interface/scoped_ptr.h"
17#include "system_wrappers/interface/trace.h"
18#include "testsupport/fileutils.h"
19
20using webrtc::CpuInfo;
21using webrtc::CpuWrapper;
22using webrtc::EventWrapper;
23using webrtc::scoped_ptr;
24using webrtc::Trace;
25
26// This test is flaky on Windows/Release.
27// http://code.google.com/p/webrtc/issues/detail?id=290
28#ifdef _WIN32
29#define MAYBE_Usage DISABLED_Usage
30#else
31#define MAYBE_Usage Usage
32#endif
33TEST(CpuWrapperTest, MAYBE_Usage) {
34  Trace::CreateTrace();
35  std::string trace_file = webrtc::test::OutputPath() +
36      "cpu_wrapper_unittest.txt";
37  Trace::SetTraceFile(trace_file.c_str());
38  Trace::SetLevelFilter(webrtc::kTraceAll);
39  printf("Number of cores detected:%u\n", CpuInfo::DetectNumberOfCores());
40  scoped_ptr<CpuWrapper> cpu(CpuWrapper::CreateCpu());
41  ASSERT_TRUE(cpu.get() != NULL);
42  scoped_ptr<EventWrapper> sleep_event(EventWrapper::Create());
43  ASSERT_TRUE(sleep_event.get() != NULL);
44
45  int num_iterations = 0;
46  WebRtc_UWord32 num_cores = 0;
47  WebRtc_UWord32* cores = NULL;
48  bool cpu_usage_available = cpu->CpuUsageMultiCore(num_cores, cores) != -1;
49  // Initializing the CPU measurements may take a couple of seconds on Windows.
50  // Since the initialization is lazy we need to wait until it is completed.
51  // Should not take more than 10000 ms.
52  while (!cpu_usage_available && (++num_iterations < 10000)) {
53    if (cores != NULL) {
54      ASSERT_GT(num_cores, 0u);
55      break;
56    }
57    sleep_event->Wait(1);
58    cpu_usage_available = cpu->CpuUsageMultiCore(num_cores, cores) != -1;
59  }
60  ASSERT_TRUE(cpu_usage_available);
61
62  const WebRtc_Word32 average = cpu->CpuUsageMultiCore(num_cores, cores);
63  ASSERT_TRUE(cores != NULL);
64  EXPECT_GT(num_cores, 0u);
65  EXPECT_GE(average, 0);
66  EXPECT_LE(average, 100);
67
68  printf("\nNumber of cores:%d\n", num_cores);
69  printf("Average cpu:%d\n", average);
70  for (WebRtc_UWord32 i = 0; i < num_cores; i++) {
71    printf("Core:%u CPU:%u \n", i, cores[i]);
72    EXPECT_GE(cores[i], 0u);
73    EXPECT_LE(cores[i], 100u);
74  }
75
76  Trace::ReturnTrace();
77};
78