| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #ifndef SkMessageBus_DEFINED | 8 #ifndef SkMessageBus_DEFINED |
| 9 #define SkMessageBus_DEFINED | 9 #define SkMessageBus_DEFINED |
| 10 | 10 |
| 11 #include "SkLazyPtr.h" | 11 #include "SkLazyPtr.h" |
| 12 #include "SkTArray.h" |
| 12 #include "SkTDArray.h" | 13 #include "SkTDArray.h" |
| 13 #include "SkThread.h" | 14 #include "SkThread.h" |
| 14 #include "SkTypes.h" | 15 #include "SkTypes.h" |
| 15 | 16 |
| 16 template <typename Message> | 17 template <typename Message> |
| 17 class SkMessageBus : SkNoncopyable { | 18 class SkMessageBus : SkNoncopyable { |
| 18 public: | 19 public: |
| 19 // Post a message to be received by all Inboxes for this Message type. Thre
adsafe. | 20 // Post a message to be received by all Inboxes for this Message type. Thre
adsafe. |
| 20 static void Post(const Message& m); | 21 static void Post(const Message& m); |
| 21 | 22 |
| 22 class Inbox { | 23 class Inbox { |
| 23 public: | 24 public: |
| 24 Inbox(); | 25 Inbox(); |
| 25 ~Inbox(); | 26 ~Inbox(); |
| 26 | 27 |
| 27 // Overwrite out with all the messages we've received since the last cal
l. Threadsafe. | 28 // Overwrite out with all the messages we've received since the last cal
l. Threadsafe. |
| 28 void poll(SkTDArray<Message>* out); | 29 void poll(SkTArray<Message>* out); |
| 29 | 30 |
| 30 private: | 31 private: |
| 31 SkTDArray<Message> fMessages; | 32 SkTArray<Message> fMessages; |
| 32 SkMutex fMessagesMutex; | 33 SkMutex fMessagesMutex; |
| 33 | 34 |
| 34 friend class SkMessageBus; | 35 friend class SkMessageBus; |
| 35 void receive(const Message& m); // SkMessageBus is a friend only to cal
l this. | 36 void receive(const Message& m); // SkMessageBus is a friend only to cal
l this. |
| 36 }; | 37 }; |
| 37 | 38 |
| 38 private: | 39 private: |
| 39 SkMessageBus(); | 40 SkMessageBus(); |
| 40 static SkMessageBus* Get(); | 41 static SkMessageBus* Get(); |
| 41 | 42 |
| (...skipping 33 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 75 if (this == bus->fInboxes[i]) { | 76 if (this == bus->fInboxes[i]) { |
| 76 bus->fInboxes.removeShuffle(i); | 77 bus->fInboxes.removeShuffle(i); |
| 77 break; | 78 break; |
| 78 } | 79 } |
| 79 } | 80 } |
| 80 } | 81 } |
| 81 | 82 |
| 82 template<typename Message> | 83 template<typename Message> |
| 83 void SkMessageBus<Message>::Inbox::receive(const Message& m) { | 84 void SkMessageBus<Message>::Inbox::receive(const Message& m) { |
| 84 SkAutoMutexAcquire lock(fMessagesMutex); | 85 SkAutoMutexAcquire lock(fMessagesMutex); |
| 85 fMessages.push(m); | 86 fMessages.push_back(m); |
| 86 } | 87 } |
| 87 | 88 |
| 88 template<typename Message> | 89 template<typename Message> |
| 89 void SkMessageBus<Message>::Inbox::poll(SkTDArray<Message>* messages) { | 90 void SkMessageBus<Message>::Inbox::poll(SkTArray<Message>* messages) { |
| 90 SkASSERT(messages); | 91 SkASSERT(messages); |
| 91 messages->reset(); | 92 messages->reset(); |
| 92 SkAutoMutexAcquire lock(fMessagesMutex); | 93 SkAutoMutexAcquire lock(fMessagesMutex); |
| 93 messages->swap(fMessages); | 94 fMessages.swap(messages); |
| 94 } | 95 } |
| 95 | 96 |
| 96 // ----------------------- Implementation of SkMessageBus --------------------
--- | 97 // ----------------------- Implementation of SkMessageBus --------------------
--- |
| 97 | 98 |
| 98 template <typename Message> | 99 template <typename Message> |
| 99 SkMessageBus<Message>::SkMessageBus() {} | 100 SkMessageBus<Message>::SkMessageBus() {} |
| 100 | 101 |
| 101 template <typename Message> | 102 template <typename Message> |
| 102 /*static*/ void SkMessageBus<Message>::Post(const Message& m) { | 103 /*static*/ void SkMessageBus<Message>::Post(const Message& m) { |
| 103 SkMessageBus<Message>* bus = SkMessageBus<Message>::Get(); | 104 SkMessageBus<Message>* bus = SkMessageBus<Message>::Get(); |
| 104 SkAutoMutexAcquire lock(bus->fInboxesMutex); | 105 SkAutoMutexAcquire lock(bus->fInboxesMutex); |
| 105 for (int i = 0; i < bus->fInboxes.count(); i++) { | 106 for (int i = 0; i < bus->fInboxes.count(); i++) { |
| 106 bus->fInboxes[i]->receive(m); | 107 bus->fInboxes[i]->receive(m); |
| 107 } | 108 } |
| 108 } | 109 } |
| 109 | 110 |
| 110 #endif // SkMessageBus_DEFINED | 111 #endif // SkMessageBus_DEFINED |
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