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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_ASYNC_SOCKET_IO_HANDLER_H_ | 5 #ifndef BASE_ASYNC_SOCKET_IO_HANDLER_H_ |
| 6 #define BASE_ASYNC_SOCKET_IO_HANDLER_H_ | 6 #define BASE_ASYNC_SOCKET_IO_HANDLER_H_ |
| 7 | 7 |
| 8 #include "base/message_loop/message_loop.h" | 8 #include "base/message_loop/message_loop.h" |
| 9 #include "base/sync_socket.h" | 9 #include "base/sync_socket.h" |
| 10 #include "base/threading/non_thread_safe.h" | 10 #include "base/threading/non_thread_safe.h" |
| (...skipping 28 matching lines...) Expand all Loading... |
| 39 // } | 39 // } |
| 40 // } | 40 // } |
| 41 // | 41 // |
| 42 // base::AsyncSocketIoHandler io_handler; | 42 // base::AsyncSocketIoHandler io_handler; |
| 43 // base::CancelableSyncSocket* socket_; | 43 // base::CancelableSyncSocket* socket_; |
| 44 // char buffer_[kBufferSize]; | 44 // char buffer_[kBufferSize]; |
| 45 // }; | 45 // }; |
| 46 // | 46 // |
| 47 class BASE_EXPORT AsyncSocketIoHandler | 47 class BASE_EXPORT AsyncSocketIoHandler |
| 48 : public NON_EXPORTED_BASE(base::NonThreadSafe), | 48 : public NON_EXPORTED_BASE(base::NonThreadSafe), |
| 49 // The message loop callback interface is different based on platforms. | |
| 50 #if defined(OS_WIN) | |
| 51 public NON_EXPORTED_BASE(base::MessageLoopForIO::IOHandler) { | |
| 52 #else | |
| 53 public NON_EXPORTED_BASE(base::MessageLoopForIO::Watcher) { | 49 public NON_EXPORTED_BASE(base::MessageLoopForIO::Watcher) { |
| 54 #endif | |
| 55 public: | 50 public: |
| 56 AsyncSocketIoHandler(); | 51 AsyncSocketIoHandler(); |
| 57 ~AsyncSocketIoHandler() override; | 52 ~AsyncSocketIoHandler() override; |
| 58 | 53 |
| 59 // Type definition for the callback. The parameter tells how many | 54 // Type definition for the callback. The parameter tells how many |
| 60 // bytes were read and is 0 if an error occurred. | 55 // bytes were read and is 0 if an error occurred. |
| 61 typedef base::Callback<void(int)> ReadCompleteCallback; | 56 typedef base::Callback<void(int)> ReadCompleteCallback; |
| 62 | 57 |
| 63 // Initializes the AsyncSocketIoHandler by hooking it up to the current | 58 // Initializes the AsyncSocketIoHandler by hooking it up to the current |
| 64 // thread's message loop (must be TYPE_IO), to do async reads from the socket | 59 // thread's message loop (must be TYPE_IO), to do async reads from the socket |
| 65 // on the current thread. The |callback| will be invoked whenever a Read() | 60 // on the current thread. The |callback| will be invoked whenever a Read() |
| 66 // has completed. | 61 // has completed. |
| 67 bool Initialize(base::SyncSocket::Handle socket, | 62 bool Initialize(base::SyncSocket::Handle socket, |
| 68 const ReadCompleteCallback& callback); | 63 const ReadCompleteCallback& callback); |
| 69 | 64 |
| 70 // Attempts to read from the socket. The return value will be |false| | 65 // Attempts to read from the socket. The return value will be |false| |
| 71 // if an error occurred and |true| if data was read or a pending read | 66 // if an error occurred and |true| if data was read or a pending read |
| 72 // was issued. Regardless of async or sync operation, the | 67 // was issued. Regardless of async or sync operation, the |
| 73 // ReadCompleteCallback (see above) will be called when data is available. | 68 // ReadCompleteCallback (see above) will be called when data is available. |
| 74 bool Read(char* buffer, int buffer_len); | 69 bool Read(char* buffer, int buffer_len); |
| 75 | 70 |
| 76 private: | 71 private: |
| 77 #if defined(OS_WIN) | |
| 78 // Implementation of IOHandler on Windows. | |
| 79 void OnIOCompleted(base::MessageLoopForIO::IOContext* context, | |
| 80 DWORD bytes_transfered, | |
| 81 DWORD error) override; | |
| 82 #elif defined(OS_POSIX) | |
| 83 // Implementation of base::MessageLoopForIO::Watcher. | 72 // Implementation of base::MessageLoopForIO::Watcher. |
| 73 #if defined(OS_POSIX) |
| 84 void OnFileCanWriteWithoutBlocking(int socket) override {} | 74 void OnFileCanWriteWithoutBlocking(int socket) override {} |
| 85 void OnFileCanReadWithoutBlocking(int socket) override; | 75 void OnFileCanReadWithoutBlocking(int socket) override; |
| 86 | 76 |
| 87 void EnsureWatchingSocket(); | 77 void EnsureWatchingSocket(); |
| 88 #endif | 78 #endif |
| 89 | 79 |
| 90 base::SyncSocket::Handle socket_; | 80 base::SyncSocket::Handle socket_; |
| 91 #if defined(OS_WIN) | 81 #if defined(OS_POSIX) |
| 92 base::MessageLoopForIO::IOContext* context_; | |
| 93 bool is_pending_; | |
| 94 #elif defined(OS_POSIX) | |
| 95 base::MessageLoopForIO::FileDescriptorWatcher socket_watcher_; | 82 base::MessageLoopForIO::FileDescriptorWatcher socket_watcher_; |
| 96 // |pending_buffer_| and |pending_buffer_len_| are valid only between | 83 // |pending_buffer_| and |pending_buffer_len_| are valid only between |
| 97 // Read() and OnFileCanReadWithoutBlocking(). | 84 // Read() and OnFileCanReadWithoutBlocking(). |
| 98 char* pending_buffer_; | 85 char* pending_buffer_; |
| 99 int pending_buffer_len_; | 86 int pending_buffer_len_; |
| 100 // |true| iff the message loop is watching the socket for IO events. | 87 // |true| iff the message loop is watching the socket for IO events. |
| 101 bool is_watching_; | 88 bool is_watching_; |
| 102 #endif | 89 #endif |
| 103 ReadCompleteCallback read_complete_; | 90 ReadCompleteCallback read_complete_; |
| 104 | 91 |
| 105 DISALLOW_COPY_AND_ASSIGN(AsyncSocketIoHandler); | 92 DISALLOW_COPY_AND_ASSIGN(AsyncSocketIoHandler); |
| 106 }; | 93 }; |
| 107 | 94 |
| 108 } // namespace base. | 95 } // namespace base. |
| 109 | 96 |
| 110 #endif // BASE_ASYNC_SOCKET_IO_HANDLER_H_ | 97 #endif // BASE_ASYNC_SOCKET_IO_HANDLER_H_ |
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