| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright (c) 2012 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 // Test of classes in tracked_time.cc | |
| 6 | |
| 7 #include "base/profiler/tracked_time.h" | |
| 8 #include "base/time/time.h" | |
| 9 #include "base/tracked_objects.h" | |
| 10 #include "testing/gtest/include/gtest/gtest.h" | |
| 11 | |
| 12 namespace tracked_objects { | |
| 13 | |
| 14 TEST(TrackedTimeTest, TrackedTimerMilliseconds) { | |
| 15 // First make sure we basicallly transfer simple milliseconds values as | |
| 16 // expected. Most critically, things should not become null. | |
| 17 int32 kSomeMilliseconds = 243; // Some example times. | |
| 18 int64 kReallyBigMilliseconds = (1LL << 35) + kSomeMilliseconds; | |
| 19 | |
| 20 TrackedTime some = TrackedTime() + | |
| 21 Duration::FromMilliseconds(kSomeMilliseconds); | |
| 22 EXPECT_EQ(kSomeMilliseconds, (some - TrackedTime()).InMilliseconds()); | |
| 23 EXPECT_FALSE(some.is_null()); | |
| 24 | |
| 25 // Now create a big time, to check that it is wrapped modulo 2^32. | |
| 26 base::TimeTicks big = base::TimeTicks() + | |
| 27 base::TimeDelta::FromMilliseconds(kReallyBigMilliseconds); | |
| 28 EXPECT_EQ(kReallyBigMilliseconds, (big - base::TimeTicks()).InMilliseconds()); | |
| 29 | |
| 30 TrackedTime wrapped_big(big); | |
| 31 // Expect wrapping at 32 bits. | |
| 32 EXPECT_EQ(kSomeMilliseconds, (wrapped_big - TrackedTime()).InMilliseconds()); | |
| 33 } | |
| 34 | |
| 35 TEST(TrackedTimeTest, TrackedTimerDuration) { | |
| 36 int kFirstMilliseconds = 793; | |
| 37 int kSecondMilliseconds = 14889; | |
| 38 | |
| 39 Duration first = Duration::FromMilliseconds(kFirstMilliseconds); | |
| 40 Duration second = Duration::FromMilliseconds(kSecondMilliseconds); | |
| 41 | |
| 42 EXPECT_EQ(kFirstMilliseconds, first.InMilliseconds()); | |
| 43 EXPECT_EQ(kSecondMilliseconds, second.InMilliseconds()); | |
| 44 | |
| 45 Duration sum = first + second; | |
| 46 EXPECT_EQ(kFirstMilliseconds + kSecondMilliseconds, sum.InMilliseconds()); | |
| 47 } | |
| 48 | |
| 49 TEST(TrackedTimeTest, TrackedTimerVsTimeTicks) { | |
| 50 // Make sure that our 32 bit timer is aligned with the TimeTicks() timer. | |
| 51 | |
| 52 // First get a 64 bit timer (which should not be null). | |
| 53 base::TimeTicks ticks_before = base::TimeTicks::Now(); | |
| 54 EXPECT_FALSE(ticks_before.is_null()); | |
| 55 | |
| 56 // Then get a 32 bit timer that can be be null when it wraps. | |
| 57 TrackedTime now = TrackedTime::Now(); | |
| 58 | |
| 59 // Then get a bracketing time. | |
| 60 base::TimeTicks ticks_after = base::TimeTicks::Now(); | |
| 61 EXPECT_FALSE(ticks_after.is_null()); | |
| 62 | |
| 63 // Now make sure that we bracketed our tracked time nicely. | |
| 64 Duration before = now - TrackedTime(ticks_before); | |
| 65 EXPECT_LE(0, before.InMilliseconds()); | |
| 66 Duration after = now - TrackedTime(ticks_after); | |
| 67 EXPECT_GE(0, after.InMilliseconds()); | |
| 68 } | |
| 69 | |
| 70 TEST(TrackedTimeTest, TrackedTimerDisabled) { | |
| 71 // Check to be sure disabling the collection of data induces a null time | |
| 72 // (which we know will return much faster). | |
| 73 ThreadData::InitializeAndSetTrackingStatus(ThreadData::DEACTIVATED); | |
| 74 // Since we disabled tracking, we should get a null response. | |
| 75 TrackedTime track_now = ThreadData::Now(); | |
| 76 EXPECT_TRUE(track_now.is_null()); | |
| 77 } | |
| 78 | |
| 79 TEST(TrackedTimeTest, TrackedTimerEnabled) { | |
| 80 ThreadData::InitializeAndSetTrackingStatus(ThreadData::PROFILING_ACTIVE); | |
| 81 // Make sure that when we enable tracking, we get a real timer result. | |
| 82 | |
| 83 // First get a 64 bit timer (which should not be null). | |
| 84 base::TimeTicks ticks_before = base::TimeTicks::Now(); | |
| 85 EXPECT_FALSE(ticks_before.is_null()); | |
| 86 | |
| 87 // Then get a 32 bit timer that can be null when it wraps. | |
| 88 // Crtical difference from the TrackedTimerVsTimeTicks test, is that we use | |
| 89 // ThreadData::Now(). It can sometimes return the null time. | |
| 90 TrackedTime now = ThreadData::Now(); | |
| 91 | |
| 92 // Then get a bracketing time. | |
| 93 base::TimeTicks ticks_after = base::TimeTicks::Now(); | |
| 94 EXPECT_FALSE(ticks_after.is_null()); | |
| 95 | |
| 96 // Now make sure that we bracketed our tracked time nicely. | |
| 97 Duration before = now - TrackedTime(ticks_before); | |
| 98 EXPECT_LE(0, before.InMilliseconds()); | |
| 99 Duration after = now - TrackedTime(ticks_after); | |
| 100 EXPECT_GE(0, after.InMilliseconds()); | |
| 101 } | |
| 102 | |
| 103 } // namespace tracked_objects | |
| OLD | NEW |
|---|
Chromium Code Reviews
