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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // OneShotTimer and RepeatingTimer provide a simple timer API. As the names | 5 // OneShotTimer and RepeatingTimer provide a simple timer API. As the names |
6 // suggest, OneShotTimer calls you back once after a time delay expires. | 6 // suggest, OneShotTimer calls you back once after a time delay expires. |
7 // RepeatingTimer on the other hand calls you back periodically with the | 7 // RepeatingTimer on the other hand calls you back periodically with the |
8 // prescribed time interval. | 8 // prescribed time interval. |
9 // | 9 // |
10 // OneShotTimer and RepeatingTimer both cancel the timer when they go out of | 10 // OneShotTimer and RepeatingTimer both cancel the timer when they go out of |
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40 | 40 |
41 #ifndef BASE_TIMER_H_ | 41 #ifndef BASE_TIMER_H_ |
42 #define BASE_TIMER_H_ | 42 #define BASE_TIMER_H_ |
43 #pragma once | 43 #pragma once |
44 | 44 |
45 // IMPORTANT: If you change timer code, make sure that all tests (including | 45 // IMPORTANT: If you change timer code, make sure that all tests (including |
46 // disabled ones) from timer_unittests.cc pass locally. Some are disabled | 46 // disabled ones) from timer_unittests.cc pass locally. Some are disabled |
47 // because they're flaky on the buildbot, but when you run them locally you | 47 // because they're flaky on the buildbot, but when you run them locally you |
48 // should be able to tell the difference. | 48 // should be able to tell the difference. |
49 | 49 |
50 #include "base/base_api.h" | 50 #include "base/base_export.h" |
51 #include "base/logging.h" | 51 #include "base/logging.h" |
52 #include "base/task.h" | 52 #include "base/task.h" |
53 #include "base/time.h" | 53 #include "base/time.h" |
54 | 54 |
55 class MessageLoop; | 55 class MessageLoop; |
56 | 56 |
57 namespace base { | 57 namespace base { |
58 | 58 |
59 //----------------------------------------------------------------------------- | 59 //----------------------------------------------------------------------------- |
60 // This class is an implementation detail of OneShotTimer and RepeatingTimer. | 60 // This class is an implementation detail of OneShotTimer and RepeatingTimer. |
61 // Please do not use this class directly. | 61 // Please do not use this class directly. |
62 // | 62 // |
63 // This class exists to share code between BaseTimer<T> template instantiations. | 63 // This class exists to share code between BaseTimer<T> template instantiations. |
64 // | 64 // |
65 class BASE_API BaseTimer_Helper { | 65 class BASE_EXPORT BaseTimer_Helper { |
66 public: | 66 public: |
67 // Stops the timer. | 67 // Stops the timer. |
68 ~BaseTimer_Helper() { | 68 ~BaseTimer_Helper() { |
69 OrphanDelayedTask(); | 69 OrphanDelayedTask(); |
70 } | 70 } |
71 | 71 |
72 // Returns true if the timer is running (i.e., not stopped). | 72 // Returns true if the timer is running (i.e., not stopped). |
73 bool IsRunning() const { | 73 bool IsRunning() const { |
74 return delayed_task_ != NULL; | 74 return delayed_task_ != NULL; |
75 } | 75 } |
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263 const ReceiverMethod method_; | 263 const ReceiverMethod method_; |
264 const TimeDelta delay_; | 264 const TimeDelta delay_; |
265 | 265 |
266 OneShotTimer<DelayTimer<Receiver> > timer_; | 266 OneShotTimer<DelayTimer<Receiver> > timer_; |
267 TimeTicks trigger_time_; | 267 TimeTicks trigger_time_; |
268 }; | 268 }; |
269 | 269 |
270 } // namespace base | 270 } // namespace base |
271 | 271 |
272 #endif // BASE_TIMER_H_ | 272 #endif // BASE_TIMER_H_ |
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