Jack2 1.9.12

JackSocketServerNotifyChannel.cpp
1 /*
2 Copyright (C) 2004-2008 Grame
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as published by
6 the Free Software Foundation; either version 2.1 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17
18 */
19
20 #include "JackSocketServerNotifyChannel.h"
21 #include "JackError.h"
22 #include "JackRequest.h"
23 #include "JackConstants.h"
24 #include "JackNotification.h"
25 #include "JackServerGlobals.h"
26
27 namespace Jack
28 {
29
30 int JackSocketServerNotifyChannel::Open(const char* server_name)
31 {
32 if (fRequestSocket.Connect(jack_server_dir, server_name, 0) < 0) {
33 jack_error("Cannot connect to server socket");
34 return -1;
35 } else {
36 fRequestSocket.SetNonBlocking(true);
37 return 0;
38 }
39 }
40
41 void JackSocketServerNotifyChannel::Close()
42 {
43 fRequestSocket.Close();
44 }
45
46 /*
47 The requirement is that the Notification from RT thread can be delivered... not sure using a socket is adequate here...
48 Can the write operation block?
49 A non blocking write operation shoud be used : check if write can succeed, and ignore the notification otherwise
50 (since its mainly used for XRun, ignoring a notification is OK, successive XRun will come...)
51 */
52 void JackSocketServerNotifyChannel::Notify(int refnum, int notify, int value)
53 {
54 JackClientNotificationRequest req(refnum, notify, value);
55 if (req.Write(&fRequestSocket) < 0) {
56 jack_error("Could not write notification ref = %d notify = %d", refnum, notify);
57 }
58 }
59
60 void JackSocketServerNotifyChannel::NotifyQuit()
61 {
62 Notify(-1, kQUIT, 0);
63 }
64
65 } // end of namespace
66
67
jack_error
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:92