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| 1 // Copyright 2014 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_SERVICES_NETWORK_PUBLIC_CPP_WEB_SOCKET_WRITE_QUEUE_H_ | |
| 6 #define MOJO_SERVICES_NETWORK_PUBLIC_CPP_WEB_SOCKET_WRITE_QUEUE_H_ | |
| 7 | |
| 8 #include "base/callback.h" | |
| 9 #include "base/memory/scoped_vector.h" | |
| 10 #include "base/memory/weak_ptr.h" | |
| 11 #include "mojo/common/handle_watcher.h" | |
| 12 #include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h" | |
| 13 | |
| 14 namespace mojo { | |
| 15 | |
| 16 // This class simplifies the handling of multiple Writes on a DataPipe. It | |
| 17 // writes each chunk all at once (or waits until the pipe is ready before | |
| 18 // writing), calling the callback when finished. Callbacks are owned by this | |
| 19 // class, and are guaranteed not to be called after this class is destroyed. | |
| 20 // See also: WebSocketReadQueue | |
| 21 class WebSocketWriteQueue { | |
| 22 public: | |
| 23 explicit WebSocketWriteQueue(DataPipeProducerHandle handle); | |
| 24 ~WebSocketWriteQueue(); | |
| 25 | |
| 26 void Write(const char* data, | |
| 27 uint32_t num_bytes, | |
| 28 base::Callback<void(const char*)> callback); | |
| 29 | |
| 30 private: | |
| 31 struct Operation; | |
| 32 | |
| 33 void TryToWrite(); | |
| 34 void Wait(); | |
| 35 void OnHandleReady(MojoResult result); | |
| 36 | |
| 37 DataPipeProducerHandle handle_; | |
| 38 common::HandleWatcher handle_watcher_; | |
| 39 ScopedVector<Operation> queue_; | |
| 40 bool is_busy_; | |
| 41 base::WeakPtrFactory<WebSocketWriteQueue> weak_factory_; | |
| 42 }; | |
| 43 | |
| 44 } // namespace mojo | |
| 45 | |
| 46 #endif // MOJO_SERVICES_NETWORK_PUBLIC_CPP_WEB_SOCKET_WRITE_QUEUE_H_ | |
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