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Side by Side Diff: device/serial/data_receiver.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_RECEIVER_H_ 5 #ifndef DEVICE_SERIAL_DATA_RECEIVER_H_
6 #define DEVICE_SERIAL_DATA_RECEIVER_H_ 6 #define DEVICE_SERIAL_DATA_RECEIVER_H_
7 7
8 #include <queue> 8 #include <queue>
9 9
10 #include "base/callback.h" 10 #include "base/callback.h"
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22 public serial::DataSourceClient, 22 public serial::DataSourceClient,
23 public mojo::ErrorHandler { 23 public mojo::ErrorHandler {
24 public: 24 public:
25 typedef base::Callback<void(scoped_ptr<ReadOnlyBuffer>)> ReceiveDataCallback; 25 typedef base::Callback<void(scoped_ptr<ReadOnlyBuffer>)> ReceiveDataCallback;
26 typedef base::Callback<void(int32_t error)> ReceiveErrorCallback; 26 typedef base::Callback<void(int32_t error)> ReceiveErrorCallback;
27 27
28 // Constructs a DataReceiver to receive data from |source|, using a buffer 28 // Constructs a DataReceiver to receive data from |source|, using a buffer
29 // size of |buffer_size|, with connection errors reported as 29 // size of |buffer_size|, with connection errors reported as
30 // |fatal_error_value|. 30 // |fatal_error_value|.
31 DataReceiver(mojo::InterfacePtr<serial::DataSource> source, 31 DataReceiver(mojo::InterfacePtr<serial::DataSource> source,
32 mojo::InterfaceRequest<serial::DataSourceClient> client,
32 uint32_t buffer_size, 33 uint32_t buffer_size,
33 int32_t fatal_error_value); 34 int32_t fatal_error_value);
34 35
35 // Begins a receive operation. If this returns true, exactly one of |callback| 36 // Begins a receive operation. If this returns true, exactly one of |callback|
36 // and |error_callback| will eventually be called. If there is already a 37 // and |error_callback| will eventually be called. If there is already a
37 // receive in progress or there has been a connection error, this will have no 38 // receive in progress or there has been a connection error, this will have no
38 // effect and return false. 39 // effect and return false.
39 bool Receive(const ReceiveDataCallback& callback, 40 bool Receive(const ReceiveDataCallback& callback,
40 const ReceiveErrorCallback& error_callback); 41 const ReceiveErrorCallback& error_callback);
41 42
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65 // |waiter_| is used to wait until it is ready. If an error occurs in reading 66 // |waiter_| is used to wait until it is ready. If an error occurs in reading
66 // |handle_|, ShutDown() is called. 67 // |handle_|, ShutDown() is called.
67 void ReceiveInternal(); 68 void ReceiveInternal();
68 69
69 // Called when we encounter a fatal error. If a receive is in progress, 70 // Called when we encounter a fatal error. If a receive is in progress,
70 // |fatal_error_value_| will be reported to the user. 71 // |fatal_error_value_| will be reported to the user.
71 void ShutDown(); 72 void ShutDown();
72 73
73 // The control connection to the data source. 74 // The control connection to the data source.
74 mojo::InterfacePtr<serial::DataSource> source_; 75 mojo::InterfacePtr<serial::DataSource> source_;
76 mojo::Binding<serial::DataSourceClient> client_;
75 77
76 // The error value to report in the event of a fatal error. 78 // The error value to report in the event of a fatal error.
77 const int32_t fatal_error_value_; 79 const int32_t fatal_error_value_;
78 80
79 // Whether we have encountered a fatal error and shut down. 81 // Whether we have encountered a fatal error and shut down.
80 bool shut_down_; 82 bool shut_down_;
81 83
82 // The current pending receive operation if there is one. 84 // The current pending receive operation if there is one.
83 scoped_ptr<PendingReceive> pending_receive_; 85 scoped_ptr<PendingReceive> pending_receive_;
84 86
85 // The queue of pending data frames (data or an error) received from the 87 // The queue of pending data frames (data or an error) received from the
86 // DataSource. 88 // DataSource.
87 std::queue<linked_ptr<DataFrame>> pending_data_frames_; 89 std::queue<linked_ptr<DataFrame>> pending_data_frames_;
88 90
89 base::WeakPtrFactory<DataReceiver> weak_factory_; 91 base::WeakPtrFactory<DataReceiver> weak_factory_;
90 92
91 DISALLOW_COPY_AND_ASSIGN(DataReceiver); 93 DISALLOW_COPY_AND_ASSIGN(DataReceiver);
92 }; 94 };
93 95
94 } // namespace device 96 } // namespace device
95 97
96 #endif // DEVICE_SERIAL_DATA_RECEIVER_H_ 98 #endif // DEVICE_SERIAL_DATA_RECEIVER_H_
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