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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 WebTaskRunner_h | 5 #ifndef WebTaskRunner_h |
| 6 #define WebTaskRunner_h | 6 #define WebTaskRunner_h |
| 7 | 7 |
| 8 #include <memory> | 8 #include <memory> |
| 9 #include "base/callback.h" | 9 #include "base/callback.h" |
| 10 #include "platform/wtf/Compiler.h" | 10 #include "platform/wtf/Compiler.h" |
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| 53 friend class WebTaskRunner; | 53 friend class WebTaskRunner; |
| 54 | 54 |
| 55 explicit TaskHandle(RefPtr<Runner>); | 55 explicit TaskHandle(RefPtr<Runner>); |
| 56 RefPtr<Runner> runner_; | 56 RefPtr<Runner> runner_; |
| 57 }; | 57 }; |
| 58 | 58 |
| 59 // The blink representation of a chromium SingleThreadTaskRunner. | 59 // The blink representation of a chromium SingleThreadTaskRunner. |
| 60 class BLINK_PLATFORM_EXPORT WebTaskRunner | 60 class BLINK_PLATFORM_EXPORT WebTaskRunner |
| 61 : public ThreadSafeRefCounted<WebTaskRunner> { | 61 : public ThreadSafeRefCounted<WebTaskRunner> { |
| 62 public: | 62 public: |
| 63 // Drepecated: favor RunsTasksInCurrentSequence(). | |
| 64 // TODO(http://crbug.com/665062): mass redirect callers and remove this. | |
| 65 bool RunsTasksOnCurrentThread(); | |
| 66 | |
| 67 // Returns true if tasks posted to this TaskRunner are sequenced | 63 // Returns true if tasks posted to this TaskRunner are sequenced |
| 68 // with this call. | 64 // with this call. |
| 69 virtual bool RunsTasksInCurrentSequence() = 0; | 65 virtual bool RunsTasksInCurrentSequence() = 0; |
| 70 | 66 |
| 71 // --- | 67 // --- |
| 72 | 68 |
| 73 // Headless Chrome virtualises time for determinism and performance (fast | 69 // Headless Chrome virtualises time for determinism and performance (fast |
| 74 // forwarding of timers). To make this work some parts of blink (e.g. Timers) | 70 // forwarding of timers). To make this work some parts of blink (e.g. Timers) |
| 75 // need to use virtual time, however by default new code should use the normal | 71 // need to use virtual time, however by default new code should use the normal |
| 76 // non-virtual time APIs. | 72 // non-virtual time APIs. |
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| 118 WebTaskRunner() = default; | 114 WebTaskRunner() = default; |
| 119 virtual ~WebTaskRunner(); | 115 virtual ~WebTaskRunner(); |
| 120 | 116 |
| 121 private: | 117 private: |
| 122 DISALLOW_COPY_AND_ASSIGN(WebTaskRunner); | 118 DISALLOW_COPY_AND_ASSIGN(WebTaskRunner); |
| 123 }; | 119 }; |
| 124 | 120 |
| 125 } // namespace blink | 121 } // namespace blink |
| 126 | 122 |
| 127 #endif // WebTaskRunner_h | 123 #endif // WebTaskRunner_h |
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