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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 WebFrameScheduler_h | 5 #ifndef WebFrameScheduler_h |
6 #define WebFrameScheduler_h | 6 #define WebFrameScheduler_h |
7 | 7 |
8 #include "WebCommon.h" | 8 #include "WebCommon.h" |
9 | 9 |
10 #include <string> | 10 #include <string> |
11 | 11 |
12 namespace blink { | 12 namespace blink { |
13 | 13 |
14 class WebSecurityOrigin; | 14 class WebSecurityOrigin; |
15 class WebTaskRunner; | 15 class WebTaskRunner; |
| 16 class WebViewScheduler; |
16 | 17 |
17 class BLINK_PLATFORM_EXPORT WebFrameScheduler { | 18 class BLINK_PLATFORM_EXPORT WebFrameScheduler { |
18 public: | 19 public: |
19 virtual ~WebFrameScheduler() { } | 20 virtual ~WebFrameScheduler() { } |
20 | 21 |
21 // The scheduler may throttle tasks associated with offscreen frames. | 22 // The scheduler may throttle tasks associated with offscreen frames. |
22 virtual void setFrameVisible(bool) { } | 23 virtual void setFrameVisible(bool) { } |
23 | 24 |
24 // Tells the scheduler that the page this frame belongs to is not visible. | 25 // Tells the scheduler that the page this frame belongs to is not visible. |
25 // The scheduler may throttle tasks associated with pages that are not visib
le. | 26 // The scheduler may throttle tasks associated with pages that are not visib
le. |
26 virtual void setPageVisible(bool) { } | 27 virtual void setPageVisible(bool) { } |
27 | 28 |
28 // Returns the WebTaskRunner for loading tasks. | 29 // Returns the WebTaskRunner for loading tasks. |
29 // WebFrameScheduler owns the returned WebTaskRunner. | 30 // WebFrameScheduler owns the returned WebTaskRunner. |
30 virtual WebTaskRunner* loadingTaskRunner() { return nullptr; } | 31 virtual WebTaskRunner* loadingTaskRunner() { return nullptr; } |
31 | 32 |
32 // Returns the WebTaskRunner for timer tasks. | 33 // Returns the WebTaskRunner for timer tasks. |
33 // WebFrameScheduler owns the returned WebTaskRunner. | 34 // WebFrameScheduler owns the returned WebTaskRunner. |
34 virtual WebTaskRunner* timerTaskRunner() { return nullptr; } | 35 virtual WebTaskRunner* timerTaskRunner() { return nullptr; } |
35 | 36 |
36 // Returns the WebTaskRunner for tasks which should never get throttled. | 37 // Returns the WebTaskRunner for tasks which should never get throttled. |
37 // This is generally used for executing internal browser tasks which should | 38 // This is generally used for executing internal browser tasks which should |
38 // never be throttled. Ideally only tasks whose performance characteristics | 39 // never be throttled. Ideally only tasks whose performance characteristics |
39 // are known should be posted to this task runner; for example user | 40 // are known should be posted to this task runner; for example user |
40 // JavaScript is discouraged. WebFrameScheduler owns the returned | 41 // JavaScript is discouraged. WebFrameScheduler owns the returned |
41 // WebTaskRunner. | 42 // WebTaskRunner. |
42 virtual WebTaskRunner* unthrottledTaskRunner() { return nullptr; } | 43 virtual WebTaskRunner* unthrottledTaskRunner() { return nullptr; } |
| 44 |
| 45 // Returns the parent WebViewScheduler. |
| 46 virtual WebViewScheduler* webViewScheduler() { return nullptr; } |
| 47 |
| 48 // Tells the scheduler a resource load has started. The scheduler may make |
| 49 // policy decisions based on this. |
| 50 virtual void incrementPendingResourceLoadCount() { } |
| 51 |
| 52 // Tells the scheduler a resource load has started. The scheduler may make |
| 53 // policy decisions based on this. |
| 54 virtual void decrementPendingResourceLoadCount() { } |
43 }; | 55 }; |
44 | 56 |
45 } // namespace blink | 57 } // namespace blink |
46 | 58 |
47 #endif // WebFrameScheduler_h | 59 #endif // WebFrameScheduler_h |
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