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Side by Side Diff: device/serial/data_source_sender.h

Issue 889283002: Remove Client= from device/serial/data_stream.mojom. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: This time without racing message pipes Created 5 years, 10 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 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 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 DEVICE_SERIAL_DATA_SOURCE_SENDER_H_ 5 #ifndef DEVICE_SERIAL_DATA_SOURCE_SENDER_H_
6 #define DEVICE_SERIAL_DATA_SOURCE_SENDER_H_ 6 #define DEVICE_SERIAL_DATA_SOURCE_SENDER_H_
7 7
8 #include <vector> 8 #include <vector>
9 9
10 #include "base/callback.h" 10 #include "base/callback.h"
11 #include "base/memory/ref_counted.h" 11 #include "base/memory/ref_counted.h"
12 #include "base/memory/weak_ptr.h" 12 #include "base/memory/weak_ptr.h"
13 #include "device/serial/buffer.h" 13 #include "device/serial/buffer.h"
14 #include "device/serial/data_stream.mojom.h" 14 #include "device/serial/data_stream.mojom.h"
15 #include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h" 15 #include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h"
16 16
17 namespace device { 17 namespace device {
18 18
19 // A DataSourceSender is an interface between a source of data and a 19 // A DataSourceSender is an interface between a source of data and a
20 // DataSourceClient. 20 // DataSourceClient.
21 class DataSourceSender : public base::RefCounted<DataSourceSender>, 21 class DataSourceSender : public base::RefCounted<DataSourceSender>,
22 public mojo::InterfaceImpl<serial::DataSource> { 22 public serial::DataSource,
23 public mojo::ErrorHandler {
23 public: 24 public:
24 typedef base::Callback<void(scoped_ptr<WritableBuffer>)> ReadyCallback; 25 typedef base::Callback<void(scoped_ptr<WritableBuffer>)> ReadyCallback;
25 typedef base::Callback<void()> ErrorCallback; 26 typedef base::Callback<void()> ErrorCallback;
26 27
27 // Constructs a DataSourceSender. Whenever the pipe is ready for writing, the 28 // Constructs a DataSourceSender. Whenever the pipe is ready for writing, the
28 // |ready_callback| will be called with the WritableBuffer to be filled. 29 // |ready_callback| will be called with the WritableBuffer to be filled.
29 // |ready_callback| will not be called again until the previous WritableBuffer 30 // |ready_callback| will not be called again until the previous WritableBuffer
30 // is destroyed. If a connection error occurs, |error_callback| will be 31 // is destroyed. If a connection error occurs, |error_callback| will be
31 // called and the DataSourceSender will act as if ShutDown() had been called. 32 // called and the DataSourceSender will act as if ShutDown() had been called.
32 DataSourceSender(const ReadyCallback& ready_callback, 33 DataSourceSender(mojo::InterfaceRequest<serial::DataSource> source,
34 mojo::InterfacePtr<serial::DataSourceClient> client,
35 const ReadyCallback& ready_callback,
33 const ErrorCallback& error_callback); 36 const ErrorCallback& error_callback);
34 37
35 // Shuts down this DataSourceSender. After shut down, |ready_callback| and 38 // Shuts down this DataSourceSender. After shut down, |ready_callback| and
36 // |error_callback| will never be called. 39 // |error_callback| will never be called.
37 void ShutDown(); 40 void ShutDown();
38 41
39 private: 42 private:
40 friend class base::RefCounted<DataSourceSender>; 43 friend class base::RefCounted<DataSourceSender>;
41 class PendingSend; 44 class PendingSend;
42 45
(...skipping 15 matching lines...) Expand all
58 // Invoked to pass |data| and |error| obtained in response to 61 // Invoked to pass |data| and |error| obtained in response to
59 // |ready_callback_|. 62 // |ready_callback_|.
60 void DoneWithError(const std::vector<char>& data, int32_t error); 63 void DoneWithError(const std::vector<char>& data, int32_t error);
61 64
62 // Dispatches |data| to the client. 65 // Dispatches |data| to the client.
63 void DoneInternal(const std::vector<char>& data); 66 void DoneInternal(const std::vector<char>& data);
64 67
65 // Reports a fatal error to the client and shuts down. 68 // Reports a fatal error to the client and shuts down.
66 void DispatchFatalError(); 69 void DispatchFatalError();
67 70
71 mojo::Binding<serial::DataSource> binding_;
72 mojo::InterfacePtr<serial::DataSourceClient> client_;
73
68 // The callback to call when the client is ready for more data. 74 // The callback to call when the client is ready for more data.
69 ReadyCallback ready_callback_; 75 ReadyCallback ready_callback_;
70 76
71 // The callback to call if a fatal error occurs. 77 // The callback to call if a fatal error occurs.
72 ErrorCallback error_callback_; 78 ErrorCallback error_callback_;
73 79
74 // The current pending send operation if there is one. 80 // The current pending send operation if there is one.
75 scoped_ptr<PendingSend> pending_send_; 81 scoped_ptr<PendingSend> pending_send_;
76 82
77 // The number of bytes available for buffering in the client. 83 // The number of bytes available for buffering in the client.
78 uint32_t available_buffer_capacity_; 84 uint32_t available_buffer_capacity_;
79 85
80 // Whether sending is paused due to an error. 86 // Whether sending is paused due to an error.
81 bool paused_; 87 bool paused_;
82 88
83 // Whether we have encountered a fatal error and shut down. 89 // Whether we have encountered a fatal error and shut down.
84 bool shut_down_; 90 bool shut_down_;
85 91
86 base::WeakPtrFactory<DataSourceSender> weak_factory_; 92 base::WeakPtrFactory<DataSourceSender> weak_factory_;
87 93
88 DISALLOW_COPY_AND_ASSIGN(DataSourceSender); 94 DISALLOW_COPY_AND_ASSIGN(DataSourceSender);
89 }; 95 };
90 96
91 } // namespace device 97 } // namespace device
92 98
93 #endif // DEVICE_SERIAL_DATA_SOURCE_SENDER_H_ 99 #endif // DEVICE_SERIAL_DATA_SOURCE_SENDER_H_
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