Jack2  1.9.9
JackExternalClient.cpp
1 /*
2  Copyright (C) 2001-2003 Paul Davis
3 Copyright (C) 2004-2008 Grame
4 
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9 
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14 
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 
19 */
20 
21 #include "JackExternalClient.h"
22 #include "JackClientControl.h"
23 #include "JackGlobals.h"
24 #include "JackChannel.h"
25 #include "JackError.h"
26 
27 namespace Jack
28 {
29 
31 {}
32 
33 JackExternalClient::~JackExternalClient()
34 {}
35 
36 int JackExternalClient::ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2)
37 {
38  int result = -1;
39  jack_log("JackExternalClient::ClientNotify ref = %ld client = %s name = %s notify = %ld", refnum, fClientControl->fName, name, notify);
40  fChannel.ClientNotify(refnum, name, notify, sync, message, value1, value2, &result);
41  return result;
42 }
43 
44 int JackExternalClient::Open(const char* name, int pid, int refnum, int uuid, int* shared_client)
45 {
46  try {
47 
48  if (fChannel.Open(name) < 0) {
49  jack_error("Cannot connect to client name = %s\n", name);
50  return -1;
51  }
52 
53  // Use "placement new" to allocate object in shared memory
54  JackShmMemAble* shared_mem = static_cast<JackShmMemAble*>(JackShmMem::operator new(sizeof(JackClientControl)));
55  shared_mem->Init();
56  fClientControl = new(shared_mem) JackClientControl(name, pid, refnum, uuid);
57 
58  if (!fClientControl) {
59  jack_error("Cannot allocate client shared memory segment");
60  return -1;
61  }
62 
63  *shared_client = shared_mem->GetShmIndex();
64  jack_log("JackExternalClient::Open name = %s index = %ld base = %x", name, shared_mem->GetShmIndex(), shared_mem->GetShmAddress());
65  return 0;
66 
67  } catch (std::exception e) {
68  return -1;
69  }
70 }
71 
72 int JackExternalClient::Close()
73 {
74  jack_log("JackExternalClient::Close");
75  fChannel.Close();
76  if (fClientControl) {
77  fClientControl->~JackClientControl();
78  JackShmMem::operator delete(fClientControl);
79  }
80  return 0;
81 }
82 
83 JackClientControl* JackExternalClient::GetClientControl() const
84 {
85  return fClientControl;
86 }
87 
88 } // end of namespace
SERVER_EXPORT void jack_error(const char *fmt,...)
Definition: JackError.cpp:91
SERVER_EXPORT void jack_log(const char *fmt,...)
Definition: JackError.cpp:107