Jack2  1.9.9
JackActivationCount.h
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 #ifndef __JackActivationCount__
21 #define __JackActivationCount__
22 
23 #include "JackPlatformPlug.h"
24 #include "JackTime.h"
25 #include "JackTypes.h"
26 
27 namespace Jack
28 {
29 
30 struct JackClientControl;
31 
36 PRE_PACKED_STRUCTURE
38 {
39 
40  private:
41 
42  SInt32 fValue;
43  SInt32 fCount;
44 
45  public:
46 
47  JackActivationCount(): fValue(0), fCount(0)
48  {}
49 
50  bool Signal(JackSynchro* synchro, JackClientControl* control);
51 
52  inline void Reset()
53  {
54  fValue = fCount;
55  }
56 
57  inline void SetValue(int val)
58  {
59  fCount = val;
60  }
61 
62  inline void IncValue()
63  {
64  fCount++;
65  }
66 
67  inline void DecValue()
68  {
69  fCount--;
70  }
71 
72  inline int GetValue() const
73  {
74  return fValue;
75  }
76 
77 } POST_PACKED_STRUCTURE;
78 
79 } // end of namespace
80 
81 
82 #endif
Inter process synchronization using using Mach semaphore.
Client activation counter.
Client control possibly in shared memory.