Index: base/profiler/tracked_time.h |
=================================================================== |
--- base/profiler/tracked_time.h (revision 109003) |
+++ base/profiler/tracked_time.h (working copy) |
@@ -1,84 +0,0 @@ |
-// Copyright (c) 2011 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#ifndef BASE_PROFILER_TRACKED_TIME_H_ |
-#define BASE_PROFILER_TRACKED_TIME_H_ |
- |
- |
-#include "base/base_export.h" |
-#include "base/basictypes.h" |
-#include "base/time.h" |
- |
-namespace tracked_objects { |
- |
-//------------------------------------------------------------------------------ |
- |
-#define USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS |
- |
-#if defined(USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS) |
- |
-// TimeTicks maintains a wasteful 64 bits of data (we need less than 32), and on |
-// windows, a 64 bit timer is expensive to even obtain. We use a simple |
-// millisecond counter for most of our time values, as well as millisecond units |
-// of duration between those values. This means we can only handle durations |
-// up to 49 days (range), or 24 days (non-negative time durations). |
-// We only define enough methods to service the needs of the tracking classes, |
-// and our interfaces are modeled after what TimeTicks and TimeDelta use (so we |
-// can swap them into place if we want to use the "real" classes). |
- |
-class BASE_EXPORT Duration { // Similar to base::TimeDelta. |
- public: |
- Duration(); |
- |
- Duration& operator+=(const Duration& other); |
- Duration operator+(const Duration& other) const; |
- |
- bool operator==(const Duration& other) const; |
- bool operator!=(const Duration& other) const; |
- bool operator>(const Duration& other) const; |
- |
- static Duration FromMilliseconds(int ms); |
- |
- int32 InMilliseconds() const; |
- |
- private: |
- friend class TrackedTime; |
- explicit Duration(int32 duration); |
- |
- // Internal time is stored directly in milliseconds. |
- int32 ms_; |
-}; |
- |
-class BASE_EXPORT TrackedTime { // Similar to base::TimeTicks. |
- public: |
- TrackedTime(); |
- explicit TrackedTime(const base::TimeTicks& time); |
- |
- static TrackedTime Now(); |
- Duration operator-(const TrackedTime& other) const; |
- TrackedTime operator+(const Duration& other) const; |
- bool is_null() const; |
- |
- private: |
- friend class Duration; |
- explicit TrackedTime(int32 ms); |
- |
- // Internal duration is stored directly in milliseconds. |
- uint32 ms_; |
-}; |
- |
-#else |
- |
-// Just use full 64 bit time calculations, and the slower TimeTicks::Now(). |
-// This allows us (as an alternative) to test with larger ranges of times, and |
-// with a more thoroughly tested class. |
- |
-typedef base::TimeTicks TrackedTime; |
-typedef base::TimeDelta Duration; |
- |
-#endif // USE_FAST_TIME_CLASS_FOR_DURATION_CALCULATIONS |
- |
-} // namespace tracked_objects |
- |
-#endif // BASE_PROFILER_TRACKED_TIME_H_ |