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_COMMON_DATA_PIPE_DRAINER_H_ 6 #define MOJO_COMMON_DATA_PIPE_DRAINER_H_ 7 8 #include <stddef.h> 9 10 #include "base/macros.h" 11 #include "base/memory/weak_ptr.h" 12 #include "mojo/common/mojo_common_export.h" 13 #include "mojo/public/cpp/system/core.h" 14 #include "mojo/public/cpp/system/watcher.h" 15 16 namespace mojo { 17 namespace common { 18 19 class MOJO_COMMON_EXPORT DataPipeDrainer { 20 public: 21 class Client { 22 public: 23 virtual void OnDataAvailable(const void* data, size_t num_bytes) = 0; 24 virtual void OnDataComplete() = 0; 25 26 protected: 27 virtual ~Client() {} 28 }; 29 30 DataPipeDrainer(Client*, mojo::ScopedDataPipeConsumerHandle source); 31 ~DataPipeDrainer(); 32 33 private: 34 void ReadData(); 35 void WaitComplete(MojoResult result); 36 37 Client* client_; 38 mojo::ScopedDataPipeConsumerHandle source_; 39 mojo::Watcher handle_watcher_; 40 41 base::WeakPtrFactory<DataPipeDrainer> weak_factory_; 42 43 DISALLOW_COPY_AND_ASSIGN(DataPipeDrainer); 44 }; 45 46 } // namespace common 47 } // namespace mojo 48 49 #endif // MOJO_COMMON_DATA_PIPE_DRAINER_H_ 50
