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Side by Side Diff: third_party/WebKit/Source/wtf/CurrentTime.h

Issue 1550563002: Blink Platform: Remove time functions from Platform. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 12 months ago
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1 /* 1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * Copyright (C) 2008 Google Inc. All rights reserved. 3 * Copyright (C) 2008 Google Inc. All rights reserved.
4 * 4 *
5 * Redistribution and use in source and binary forms, with or without 5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are 6 * modification, are permitted provided that the following conditions are
7 * met: 7 * met:
8 * 8 *
9 * * Redistributions of source code must retain the above copyright 9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer. 10 * notice, this list of conditions and the following disclaimer.
(...skipping 37 matching lines...) Expand 10 before | Expand all | Expand 10 after
48 } 48 }
49 49
50 // Provides a monotonically increasing time in seconds since an arbitrary point in the past. 50 // Provides a monotonically increasing time in seconds since an arbitrary point in the past.
51 // On unsupported platforms, this function only guarantees the result will be no n-decreasing. 51 // On unsupported platforms, this function only guarantees the result will be no n-decreasing.
52 WTF_EXPORT double monotonicallyIncreasingTime(); 52 WTF_EXPORT double monotonicallyIncreasingTime();
53 53
54 // Provides a timestamp that aligns with system tracing utilities on the host op erating 54 // Provides a timestamp that aligns with system tracing utilities on the host op erating
55 // system. 55 // system.
56 WTF_EXPORT double systemTraceTime(); 56 WTF_EXPORT double systemTraceTime();
57 57
58 typedef double(*TimeFunction)(void); 58 using TimeFunction = double (*)();
59 void setCurrentTimeFunction(TimeFunction);
60 WTF_EXPORT void setMonotonicallyIncreasingTimeFunction(TimeFunction);
61 void setSystemTraceTimeFunction(TimeFunction);
62 59
60 // Make all the time functions (currentTime(), monotonicallyIncreasingTime(), sy stemTraceTime()) return the result
61 // of the supplied function. Returns the pointer to the old time function. For b oth setting and getting, nullptr means
62 // using the default timing function returning the actual time.
63 WTF_EXPORT TimeFunction setTimeFunctionsForTesting(TimeFunction);
63 64
64 } // namespace WTF 65 } // namespace WTF
65 66
66 using WTF::currentTime; 67 using WTF::currentTime;
67 using WTF::currentTimeMS; 68 using WTF::currentTimeMS;
68 using WTF::monotonicallyIncreasingTime; 69 using WTF::monotonicallyIncreasingTime;
69 using WTF::systemTraceTime; 70 using WTF::systemTraceTime;
71 using WTF::TimeFunction;
72 using WTF::setTimeFunctionsForTesting;
70 73
71 #endif // CurrentTime_h 74 #endif // CurrentTime_h
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