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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_QUEUE_H_ | |
| 6 #define MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_QUEUE_H_ | |
| 7 | |
| 8 #include <queue> | |
| 9 | |
| 10 #include "mojo/public/cpp/system/macros.h" | |
| 11 | |
| 12 namespace mojo { | |
| 13 class Message; | |
| 14 | |
| 15 namespace internal { | |
| 16 | |
| 17 // A queue for Message objects. | |
| 18 class MessageQueue { | |
| 19 public: | |
| 20 MessageQueue(); | |
| 21 ~MessageQueue(); | |
| 22 | |
| 23 bool IsEmpty() const; | |
| 24 Message* Peek(); | |
| 25 | |
| 26 // This method transfers ownership of |message->data| and |message->handles| | |
| 27 // to the message queue, resetting |message| in the process. | |
| 28 void Push(Message* message); | |
| 29 | |
| 30 // Removes the next message from the queue, transferring ownership of its | |
| 31 // data and handles to the given |message|. | |
| 32 void Pop(Message* message); | |
| 33 | |
| 34 // Removes the next message from the queue, discarding its data and handles. | |
| 35 // This is meant to be used in conjunction with |Peek|. | |
| 36 void Pop(); | |
| 37 | |
| 38 private: | |
| 39 std::queue<Message*> queue_; | |
| 40 | |
| 41 MOJO_DISALLOW_COPY_AND_ASSIGN(MessageQueue); | |
| 42 }; | |
| 43 | |
| 44 } // namespace internal | |
| 45 } // namespace mojo | |
| 46 | |
| 47 #endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_MESSAGE_QUEUE_H_ | |
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