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1 /*
2 * MacGDBp
3 * Copyright (c) 2007 - 2011, Blue Static <http://www.bluestatic.org>
4 *
5 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
6 * General Public License as published by the Free Software Foundation; either version 2 of the
7 * License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
10 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License along with this program; if not,
14 * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
15 */
16
17 #import <CoreFoundation/CoreFoundation.h>
18 #import <Foundation/Foundation.h>
19
20 @class NetworkConnection;
21
22 // This class is used for the CFNetwork callbacks. It is a private class and
23 // the instance is owned by the NewtorkConnection instance. This class can be
24 // considered an extension of NetworkConnection.
25 class NetworkCallbackController
26 {
27 public:
28 // This object should be constructed on the thread which the streams are
29 // to be scheduled on. It will hold a weak reference to the run loop on that
30 // thread.
31 explicit NetworkCallbackController(NetworkConnection* connection);
32
33 // Creates a socket and schedules it on the current run loop.
34 void OpenConnection(NSUInteger port);
35
36 // Closes down the read/write streams.
37 void CloseConnection();
38
39 private:
40 // These static methods forward an invocation to the instance methods. The
41 // last void pointer, named |self|, is the instance of this class.
42 static void SocketAcceptCallback(CFSocketRef socket,
43 CFSocketCallBackType callbackType,
44 CFDataRef address,
45 const void* data,
46 void* self);
47 static void ReadStreamCallback(CFReadStreamRef stream,
48 CFStreamEventType eventType,
49 void* self);
50 static void WriteStreamCallback(CFWriteStreamRef stream,
51 CFStreamEventType eventType,
52 void* self);
53
54 void OnSocketAccept(CFSocketRef socket,
55 CFDataRef address,
56 const void* data);
57 void OnReadStreamEvent(CFReadStreamRef stream, CFStreamEventType eventType);
58 void OnWriteStreamEvent(CFWriteStreamRef stream, CFStreamEventType eventType);
59
60 // Removes the read or write stream from the run loop, closes the stream,
61 // releases the reference.
62 void UnscheduleReadStream();
63 void UnscheduleWriteStream();
64
65 // Messages the NetworkConnection's delegate and takes ownership of |error|.
66 void ReportError(CFErrorRef error);
67
68 // The actual socket.
69 CFSocketRef socket_; // Strong.
70
71 NetworkConnection* connection_; // Weak, owns this.
72 CFRunLoopRef runLoop_; // Weak.
73 };
74