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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 WebViewScheduler_h | 5 #ifndef WebViewScheduler_h |
6 #define WebViewScheduler_h | 6 #define WebViewScheduler_h |
7 | 7 |
8 #include "WebCommon.h" | 8 #include "WebCommon.h" |
9 #include "public/platform/BlameContext.h" | 9 #include "public/platform/BlameContext.h" |
10 | 10 |
11 #if INSIDE_BLINK | |
12 #include "wtf/Forward.h" | |
13 #endif | |
14 | |
11 #include <memory> | 15 #include <memory> |
12 | 16 |
13 namespace blink { | 17 namespace blink { |
14 | 18 |
15 class WebFrameScheduler; | 19 class WebFrameScheduler; |
16 | 20 |
17 class BLINK_PLATFORM_EXPORT WebViewScheduler { | 21 class BLINK_PLATFORM_EXPORT WebViewScheduler { |
18 public: | 22 public: |
23 WebViewScheduler(); | |
19 virtual ~WebViewScheduler() { } | 24 virtual ~WebViewScheduler() { } |
20 | 25 |
21 // The scheduler may throttle tasks associated with background pages. | 26 // The scheduler may throttle tasks associated with background pages. |
22 virtual void setPageVisible(bool) = 0; | 27 virtual void setPageVisible(bool) = 0; |
23 | 28 |
24 // Creates a new WebFrameScheduler. The caller is responsible for deleting | 29 // Creates a new WebFrameScheduler. The caller is responsible for deleting |
25 // it. All tasks executed by the frame scheduler will be attributed to | 30 // it. All tasks executed by the frame scheduler will be attributed to |
26 // |BlameContext|. | 31 // |BlameContext|. |
27 virtual std::unique_ptr<WebFrameScheduler> createFrameScheduler(BlameContext *) = 0; | 32 virtual std::unique_ptr<WebFrameScheduler> createFrameScheduler(BlameContext *) = 0; |
28 | 33 |
29 // Instructs this WebViewScheduler to use virtual time. When virtual time is enabled | 34 // Instructs this WebViewScheduler to use virtual time. When virtual time is enabled |
30 // the system doesn't actually sleep for the delays between tasks before exe cuting | 35 // the system doesn't actually sleep for the delays between tasks before exe cuting |
31 // them. E.g: A-E are delayed tasks | 36 // them. E.g: A-E are delayed tasks |
32 // | 37 // |
33 // | A B C D E (normal) | 38 // | A B C D E (normal) |
34 // |-----------------------------> time | 39 // |-----------------------------> time |
35 // | 40 // |
36 // |ABCDE (virtual time) | 41 // |ABCDE (virtual time) |
37 // |-----------------------------> time | 42 // |-----------------------------> time |
38 virtual void enableVirtualTime() = 0; | 43 virtual void enableVirtualTime() = 0; |
39 | 44 |
40 // Controls whether or not virtual time is allowed to advance. If virtual ti me | 45 // Controls whether or not virtual time is allowed to advance. If virtual ti me |
41 // is not allowed to advance then delayed tasks posted to the WebTaskRunners owned | 46 // is not allowed to advance then delayed tasks posted to the WebTaskRunners owned |
42 // by any child WebFrameSchedulers will be paused. If virtual time is allowe d to | 47 // by any child WebFrameSchedulers will be paused. If virtual time is allowe d to |
43 // advance then tasks will be run in time order (as usual) but virtual time will | 48 // advance then tasks will be run in time order (as usual) but virtual time will |
44 // fast forward so that the system doesn't actually sleep for the delays bet ween | 49 // fast forward so that the system doesn't actually sleep for the delays bet ween |
45 // tasks before executing them. | 50 // tasks before executing them. |
46 virtual void setAllowVirtualTimeToAdvance(bool) = 0; | 51 virtual void setAllowVirtualTimeToAdvance(bool) = 0; |
52 | |
53 void incrementPendingResorceLoadCount(); | |
Sami
2016/06/29 16:22:27
typo: Resource
alex clarke (OOO till 29th)
2016/06/29 17:08:31
Done.
| |
54 void decrementPendingResorceLoadCount(); | |
55 | |
56 enum class VirtualTimePolicy { | |
57 ADVANCE, | |
58 PAUSE, | |
59 PAUSE_IF_NETWORK_FETCHES_PENDING | |
60 }; | |
61 | |
62 void setVirtualTimePolicy(VirtualTimePolicy); | |
63 | |
64 #ifdef INSIDE_BLINK | |
65 void setVirtualTimePolicy(const WTF::String&); | |
66 #endif | |
67 | |
68 private: | |
69 int m_pendingResourceLoadCount; | |
70 VirtualTimePolicy m_virtualTimePolicy; | |
47 }; | 71 }; |
48 | 72 |
49 } // namespace blink | 73 } // namespace blink |
50 | 74 |
51 #endif // WebViewScheduler | 75 #endif // WebViewScheduler |
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