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1 /* | 1 /* |
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. | 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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37 namespace blink { | 37 namespace blink { |
38 | 38 |
39 class ExecutionContext; | 39 class ExecutionContext; |
40 | 40 |
41 class CORE_EXPORT NetworkStateNotifier { | 41 class CORE_EXPORT NetworkStateNotifier { |
42 WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED(NetworkS
tateNotifier); | 42 WTF_MAKE_NONCOPYABLE(NetworkStateNotifier); WTF_MAKE_FAST_ALLOCATED(NetworkS
tateNotifier); |
43 public: | 43 public: |
44 class NetworkStateObserver { | 44 class NetworkStateObserver { |
45 public: | 45 public: |
46 // Will be called on the thread of the context passed in addObserver. | 46 // Will be called on the thread of the context passed in addObserver. |
47 virtual void connectionTypeChange(blink::WebConnectionType) = 0; | 47 virtual void connectionTypeChange(WebConnectionType) = 0; |
48 }; | 48 }; |
49 | 49 |
50 NetworkStateNotifier() | 50 NetworkStateNotifier() |
51 : m_isOnLine(true) | 51 : m_isOnLine(true) |
52 , m_type(blink::ConnectionTypeOther) | 52 , m_type(ConnectionTypeOther) |
53 , m_testUpdatesOnly(false) | 53 , m_testUpdatesOnly(false) |
54 { | 54 { |
55 } | 55 } |
56 | 56 |
57 bool onLine() const | 57 bool onLine() const |
58 { | 58 { |
59 MutexLocker locker(m_mutex); | 59 MutexLocker locker(m_mutex); |
60 return m_isOnLine; | 60 return m_isOnLine; |
61 } | 61 } |
62 | 62 |
63 void setOnLine(bool); | 63 void setOnLine(bool); |
64 | 64 |
65 blink::WebConnectionType connectionType() const | 65 WebConnectionType connectionType() const |
66 { | 66 { |
67 MutexLocker locker(m_mutex); | 67 MutexLocker locker(m_mutex); |
68 return m_type; | 68 return m_type; |
69 } | 69 } |
70 | 70 |
71 void setWebConnectionType(blink::WebConnectionType); | 71 void setWebConnectionType(WebConnectionType); |
72 | 72 |
73 // Must be called on the context's thread. An added observer must be removed | 73 // Must be called on the context's thread. An added observer must be removed |
74 // before its ExecutionContext is deleted. It's possible for an observer to | 74 // before its ExecutionContext is deleted. It's possible for an observer to |
75 // be called twice for the same event if it is first removed and then added | 75 // be called twice for the same event if it is first removed and then added |
76 // during notification. | 76 // during notification. |
77 void addObserver(NetworkStateObserver*, ExecutionContext*); | 77 void addObserver(NetworkStateObserver*, ExecutionContext*); |
78 void removeObserver(NetworkStateObserver*, ExecutionContext*); | 78 void removeObserver(NetworkStateObserver*, ExecutionContext*); |
79 | 79 |
80 // The following functions are for testing purposes. | 80 // The following functions are for testing purposes. |
81 | 81 |
82 // When true, setWebConnectionType calls are ignored and only setWebConnecti
onTypeForTest | 82 // When true, setWebConnectionType calls are ignored and only setWebConnecti
onTypeForTest |
83 // can update the connection type. This is used for layout tests (see crbug.
com/377736). | 83 // can update the connection type. This is used for layout tests (see crbug.
com/377736). |
84 void setTestUpdatesOnly(bool); | 84 void setTestUpdatesOnly(bool); |
85 // Tests should call this as it will change the type regardless of the value
of m_testUpdatesOnly. | 85 // Tests should call this as it will change the type regardless of the value
of m_testUpdatesOnly. |
86 void setWebConnectionTypeForTest(blink::WebConnectionType); | 86 void setWebConnectionTypeForTest(WebConnectionType); |
87 | 87 |
88 private: | 88 private: |
89 struct ObserverList { | 89 struct ObserverList { |
90 ObserverList() | 90 ObserverList() |
91 : iterating(false) | 91 : iterating(false) |
92 { | 92 { |
93 } | 93 } |
94 bool iterating; | 94 bool iterating; |
95 Vector<NetworkStateObserver*> observers; | 95 Vector<NetworkStateObserver*> observers; |
96 Vector<size_t> zeroedObservers; // Indices in observers that are 0. | 96 Vector<size_t> zeroedObservers; // Indices in observers that are 0. |
97 }; | 97 }; |
98 | 98 |
99 void setWebConnectionTypeImpl(blink::WebConnectionType); | 99 void setWebConnectionTypeImpl(WebConnectionType); |
100 | 100 |
101 using ObserverListMap = HashMap<ExecutionContext*, OwnPtr<ObserverList>>; | 101 using ObserverListMap = HashMap<ExecutionContext*, OwnPtr<ObserverList>>; |
102 | 102 |
103 void notifyObserversOnContext(blink::WebConnectionType, ExecutionContext*); | 103 void notifyObserversOnContext(WebConnectionType, ExecutionContext*); |
104 | 104 |
105 ObserverList* lockAndFindObserverList(ExecutionContext*); | 105 ObserverList* lockAndFindObserverList(ExecutionContext*); |
106 | 106 |
107 // Removed observers are nulled out in the list in case the list is being | 107 // Removed observers are nulled out in the list in case the list is being |
108 // iterated over. Once done iterating, call this to clean up nulled | 108 // iterated over. Once done iterating, call this to clean up nulled |
109 // observers. | 109 // observers. |
110 void collectZeroedObservers(ObserverList*, ExecutionContext*); | 110 void collectZeroedObservers(ObserverList*, ExecutionContext*); |
111 | 111 |
112 mutable Mutex m_mutex; | 112 mutable Mutex m_mutex; |
113 bool m_isOnLine; | 113 bool m_isOnLine; |
114 blink::WebConnectionType m_type; | 114 WebConnectionType m_type; |
115 ObserverListMap m_observers; | 115 ObserverListMap m_observers; |
116 bool m_testUpdatesOnly; | 116 bool m_testUpdatesOnly; |
117 }; | 117 }; |
118 | 118 |
119 CORE_EXPORT NetworkStateNotifier& networkStateNotifier(); | 119 CORE_EXPORT NetworkStateNotifier& networkStateNotifier(); |
120 | 120 |
121 } // namespace blink | 121 } // namespace blink |
122 | 122 |
123 #endif // NetworkStateNotifier_h | 123 #endif // NetworkStateNotifier_h |
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