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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "platform/Timer.h" | |
6 | |
7 #include "base/memory/ptr_util.h" | |
8 #include "platform/testing/UnitTestHelpers.h" | |
9 #include "public/platform/Platform.h" | |
10 #include "testing/gtest/include/gtest/gtest.h" | |
11 | |
12 namespace blink { | |
13 | |
14 class TimerPerfTest : public ::testing::Test { | |
15 public: | |
16 void nopTask(TimerBase*) | |
17 { | |
18 } | |
19 | |
20 void recordStartRunTime(TimerBase*) | |
21 { | |
22 m_runStart = base::ThreadTicks::Now(); | |
23 } | |
24 | |
25 void recordEndRunTime(TimerBase*) | |
26 { | |
27 m_runEnd = base::ThreadTicks::Now(); | |
28 base::MessageLoop::current()->QuitNow(); | |
29 } | |
30 | |
31 base::ThreadTicks m_runStart; | |
32 base::ThreadTicks m_runEnd; | |
33 }; | |
34 | |
35 TEST_F(TimerPerfTest, PostAndRunTimers) | |
36 { | |
37 const int numIterations = 10000; | |
38 std::vector<std::unique_ptr<Timer<TimerPerfTest>>> timers(numIterations); | |
haraken
2016/09/09 02:34:07
Use Vector.
alex clarke (OOO till 29th)
2016/09/09 09:40:59
Done.
| |
39 for (int i = 0; i < numIterations; i++) { | |
40 timers[i] = base::MakeUnique<Timer<TimerPerfTest>>(this, &TimerPerfTest: :nopTask); | |
haraken
2016/09/09 02:34:07
Use wrapUnique.
alex clarke (OOO till 29th)
2016/09/09 09:40:59
Used reset in the end.
| |
41 } | |
42 | |
43 Timer<TimerPerfTest> measureRunStart(this, &TimerPerfTest::recordStartRunTim e); | |
44 Timer<TimerPerfTest> measureRunEnd(this, &TimerPerfTest::recordEndRunTime); | |
45 | |
46 measureRunStart.startOneShot(0.0, BLINK_FROM_HERE); | |
47 base::ThreadTicks postStart = base::ThreadTicks::Now(); | |
48 for (int i = 0; i < numIterations; i++) { | |
49 timers[i]->startOneShot(0.0, BLINK_FROM_HERE); | |
50 } | |
51 base::ThreadTicks postEnd = base::ThreadTicks::Now(); | |
52 measureRunEnd.startOneShot(0.0, BLINK_FROM_HERE); | |
53 | |
54 testing::enterRunLoop(); | |
55 | |
56 std::cout << "TimerBase::startOneShot cost (us/call) "; | |
haraken
2016/09/09 02:34:07
Use LOG.
alex clarke (OOO till 29th)
2016/09/09 09:40:59
Done.
| |
57 std::cout << (postEnd - postStart).InMicroseconds() / static_cast<double>(nu mIterations); | |
58 std::cout << " (total " << (postEnd - postStart).InMicroseconds() << " us)" << std::endl; | |
59 | |
60 std::cout << "Time to run " << numIterations << " trivial tasks (us) "; | |
61 std::cout << (m_runEnd - m_runStart).InMicroseconds() << std::endl; | |
62 } | |
63 | |
64 TEST_F(TimerPerfTest, PostThenCancelTenThousandTimers) | |
65 { | |
66 const int numIterations = 10000; | |
67 std::vector<std::unique_ptr<Timer<TimerPerfTest>>> timers(numIterations); | |
68 for (int i = 0; i < numIterations; i++) { | |
69 timers[i] = base::MakeUnique<Timer<TimerPerfTest>>(this, &TimerPerfTest: :nopTask); | |
70 } | |
71 | |
72 Timer<TimerPerfTest> measureRunStart(this, &TimerPerfTest::recordStartRunTim e); | |
73 Timer<TimerPerfTest> measureRunEnd(this, &TimerPerfTest::recordEndRunTime); | |
74 | |
75 measureRunStart.startOneShot(0.0, BLINK_FROM_HERE); | |
76 base::ThreadTicks postStart = base::ThreadTicks::Now(); | |
77 for (int i = 0; i < numIterations; i++) { | |
78 timers[i]->startOneShot(0.0, BLINK_FROM_HERE); | |
79 } | |
80 base::ThreadTicks postEnd = base::ThreadTicks::Now(); | |
81 measureRunEnd.startOneShot(0.0, BLINK_FROM_HERE); | |
82 | |
83 base::ThreadTicks cancelStart = base::ThreadTicks::Now(); | |
84 for (int i = 0; i < numIterations; i++) { | |
85 timers[i]->stop(); | |
86 } | |
87 base::ThreadTicks cancelEnd = base::ThreadTicks::Now(); | |
88 | |
89 testing::enterRunLoop(); | |
90 | |
91 std::cout << "TimerBase::startOneShot cost (us/call) "; | |
92 std::cout << (postEnd - postStart).InMicroseconds() / static_cast<double>(nu mIterations); | |
93 std::cout << " (total " << (postEnd - postStart).InMicroseconds() << " us)" << std::endl; | |
94 | |
95 std::cout << "TimerBase::stop cost (us/call) "; | |
96 std::cout << (cancelEnd - cancelStart).InMicroseconds() / static_cast<double >(numIterations); | |
97 std::cout << " (total " << (cancelEnd - cancelStart).InMicroseconds() << " u s)" << std::endl; | |
98 | |
99 std::cout << "Time to run " << numIterations << " canceled tasks (us) "; | |
100 std::cout << (m_runEnd - m_runStart).InMicroseconds() << std::endl; | |
101 } | |
102 | |
103 } // namespace blink | |
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