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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 // This file defines FileStream::Context class. | 5 // This file defines FileStream::Context class. |
| 6 // The general design of FileStream is as follows: file_stream.h defines | 6 // The general design of FileStream is as follows: file_stream.h defines |
| 7 // FileStream class which basically is just an "wrapper" not containing any | 7 // FileStream class which basically is just an "wrapper" not containing any |
| 8 // specific implementation details. It re-routes all its method calls to | 8 // specific implementation details. It re-routes all its method calls to |
| 9 // the instance of FileStream::Context (FileStream holds a scoped_ptr to | 9 // the instance of FileStream::Context (FileStream holds a scoped_ptr to |
| 10 // FileStream::Context instance). Context was extracted into a different class | 10 // FileStream::Context instance). Context was extracted into a different class |
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| 59 //////////////////////////////////////////////////////////////////////////// | 59 //////////////////////////////////////////////////////////////////////////// |
| 60 | 60 |
| 61 explicit Context(const scoped_refptr<base::TaskRunner>& task_runner); | 61 explicit Context(const scoped_refptr<base::TaskRunner>& task_runner); |
| 62 Context(base::File file, const scoped_refptr<base::TaskRunner>& task_runner); | 62 Context(base::File file, const scoped_refptr<base::TaskRunner>& task_runner); |
| 63 #if defined(OS_WIN) | 63 #if defined(OS_WIN) |
| 64 virtual ~Context(); | 64 virtual ~Context(); |
| 65 #elif defined(OS_POSIX) | 65 #elif defined(OS_POSIX) |
| 66 ~Context(); | 66 ~Context(); |
| 67 #endif | 67 #endif |
| 68 | 68 |
| 69 int ReadAsync(IOBuffer* buf, | 69 int ReadAsync(IOBuffer* buf, int buf_len, const CompletionCallback& callback); |
| 70 int buf_len, | |
| 71 const CompletionCallback& callback); | |
| 72 | 70 |
| 73 int WriteAsync(IOBuffer* buf, | 71 int WriteAsync(IOBuffer* buf, |
| 74 int buf_len, | 72 int buf_len, |
| 75 const CompletionCallback& callback); | 73 const CompletionCallback& callback); |
| 76 | 74 |
| 77 //////////////////////////////////////////////////////////////////////////// | 75 //////////////////////////////////////////////////////////////////////////// |
| 78 // Inline methods. | 76 // Inline methods. |
| 79 //////////////////////////////////////////////////////////////////////////// | 77 //////////////////////////////////////////////////////////////////////////// |
| 80 | 78 |
| 81 const base::File& file() const { return file_; } | 79 const base::File& file() const { return file_; } |
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| 138 | 136 |
| 139 void CloseAndDelete(); | 137 void CloseAndDelete(); |
| 140 | 138 |
| 141 Int64CompletionCallback IntToInt64(const CompletionCallback& callback); | 139 Int64CompletionCallback IntToInt64(const CompletionCallback& callback); |
| 142 | 140 |
| 143 // Called when asynchronous Open() or Seek() | 141 // Called when asynchronous Open() or Seek() |
| 144 // is completed. |result| contains the result or a network error code. | 142 // is completed. |result| contains the result or a network error code. |
| 145 void OnAsyncCompleted(const Int64CompletionCallback& callback, | 143 void OnAsyncCompleted(const Int64CompletionCallback& callback, |
| 146 const IOResult& result); | 144 const IOResult& result); |
| 147 | 145 |
| 148 //////////////////////////////////////////////////////////////////////////// | 146 //////////////////////////////////////////////////////////////////////////// |
| 149 // Helper stuff which is platform-dependent but is used in the platform- | 147 // Helper stuff which is platform-dependent but is used in the platform- |
| 150 // independent code implemented in file_stream_context.cc. These helpers were | 148 // independent code implemented in file_stream_context.cc. These helpers were |
| 151 // introduced solely to implement as much of the Context methods as | 149 // introduced solely to implement as much of the Context methods as |
| 152 // possible independently from platform. | 150 // possible independently from platform. |
| 153 //////////////////////////////////////////////////////////////////////////// | 151 //////////////////////////////////////////////////////////////////////////// |
| 154 | 152 |
| 155 #if defined(OS_WIN) | 153 #if defined(OS_WIN) |
| 156 int GetLastErrno() { return GetLastError(); } | 154 int GetLastErrno() { return GetLastError(); } |
| 157 void OnAsyncFileOpened(); | 155 void OnAsyncFileOpened(); |
| 158 #elif defined(OS_POSIX) | 156 #elif defined(OS_POSIX) |
| 159 int GetLastErrno() { return errno; } | 157 int GetLastErrno() { return errno; } |
| 160 void OnAsyncFileOpened() {} | 158 void OnAsyncFileOpened() {} |
| 161 void CancelIo(base::PlatformFile) {} | 159 void CancelIo(base::PlatformFile) {} |
| 162 #endif | 160 #endif |
| 163 | 161 |
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| 200 CompletionCallback callback_; | 198 CompletionCallback callback_; |
| 201 scoped_refptr<IOBuffer> in_flight_buf_; | 199 scoped_refptr<IOBuffer> in_flight_buf_; |
| 202 #endif | 200 #endif |
| 203 | 201 |
| 204 DISALLOW_COPY_AND_ASSIGN(Context); | 202 DISALLOW_COPY_AND_ASSIGN(Context); |
| 205 }; | 203 }; |
| 206 | 204 |
| 207 } // namespace net | 205 } // namespace net |
| 208 | 206 |
| 209 #endif // NET_BASE_FILE_STREAM_CONTEXT_H_ | 207 #endif // NET_BASE_FILE_STREAM_CONTEXT_H_ |
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