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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 #ifndef BASE_MESSAGE_PUMP_H_ | 5 #ifndef BASE_MESSAGE_PUMP_H_ |
6 #define BASE_MESSAGE_PUMP_H_ | 6 #define BASE_MESSAGE_PUMP_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/base_api.h" | 9 #include "base/base_export.h" |
10 #include "base/memory/ref_counted.h" | 10 #include "base/memory/ref_counted.h" |
11 | 11 |
12 namespace base { | 12 namespace base { |
13 | 13 |
14 class TimeTicks; | 14 class TimeTicks; |
15 | 15 |
16 class BASE_API MessagePump : public RefCountedThreadSafe<MessagePump> { | 16 class BASE_EXPORT MessagePump : public RefCountedThreadSafe<MessagePump> { |
17 public: | 17 public: |
18 // Please see the comments above the Run method for an illustration of how | 18 // Please see the comments above the Run method for an illustration of how |
19 // these delegate methods are used. | 19 // these delegate methods are used. |
20 class BASE_API Delegate { | 20 class BASE_EXPORT Delegate { |
21 public: | 21 public: |
22 virtual ~Delegate() {} | 22 virtual ~Delegate() {} |
23 | 23 |
24 // Called from within Run in response to ScheduleWork or when the message | 24 // Called from within Run in response to ScheduleWork or when the message |
25 // pump would otherwise call DoDelayedWork. Returns true to indicate that | 25 // pump would otherwise call DoDelayedWork. Returns true to indicate that |
26 // work was done. DoDelayedWork will still be called if DoWork returns | 26 // work was done. DoDelayedWork will still be called if DoWork returns |
27 // true, but DoIdleWork will not. | 27 // true, but DoIdleWork will not. |
28 virtual bool DoWork() = 0; | 28 virtual bool DoWork() = 0; |
29 | 29 |
30 // Called from within Run in response to ScheduleDelayedWork or when the | 30 // Called from within Run in response to ScheduleDelayedWork or when the |
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118 | 118 |
119 // Schedule a DoDelayedWork callback to happen at the specified time, | 119 // Schedule a DoDelayedWork callback to happen at the specified time, |
120 // cancelling any pending DoDelayedWork callback. This method may only be | 120 // cancelling any pending DoDelayedWork callback. This method may only be |
121 // used on the thread that called Run. | 121 // used on the thread that called Run. |
122 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) = 0; | 122 virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) = 0; |
123 }; | 123 }; |
124 | 124 |
125 } // namespace base | 125 } // namespace base |
126 | 126 |
127 #endif // BASE_MESSAGE_PUMP_H_ | 127 #endif // BASE_MESSAGE_PUMP_H_ |
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