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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. |
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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 typedef double(*TimeFunction)(void); |
59 void setCurrentTimeFunction(TimeFunction); | 59 void setCurrentTimeFunction(TimeFunction); |
60 void setMonotonicallyIncreasingTimeFunction(TimeFunction); | 60 WTF_EXPORT void setMonotonicallyIncreasingTimeFunction(TimeFunction); |
61 void setSystemTraceTimeFunction(TimeFunction); | 61 void setSystemTraceTimeFunction(TimeFunction); |
62 | 62 |
63 | 63 |
64 } // namespace WTF | 64 } // namespace WTF |
65 | 65 |
66 using WTF::currentTime; | 66 using WTF::currentTime; |
67 using WTF::currentTimeMS; | 67 using WTF::currentTimeMS; |
68 using WTF::monotonicallyIncreasingTime; | 68 using WTF::monotonicallyIncreasingTime; |
69 using WTF::systemTraceTime; | 69 using WTF::systemTraceTime; |
70 | 70 |
71 #endif // CurrentTime_h | 71 #endif // CurrentTime_h |
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