Jack2  1.9.12
JackPosixSemaphore.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 __JackPosixSemaphore__
21 #define __JackPosixSemaphore__
22 
23 #include "JackSynchro.h"
24 #include "JackCompilerDeps.h"
25 #include <semaphore.h>
26 #include <time.h>
27 #include <assert.h>
28 
29 namespace Jack
30 {
31 
36 class SERVER_EXPORT JackPosixSemaphore : public detail::JackSynchro
37 {
38 
39  private:
40 
41  sem_t* fSemaphore;
42  bool fPromiscuous;
43 #ifdef __linux__
44  int fPromiscuousGid;
45 #endif
46 
47  protected:
48 
49  void BuildName(const char* name, const char* server_name, char* res, int size);
50 
51  public:
52 
54 
55  bool Signal();
56  bool SignalAll();
57  bool Wait();
58  bool TimedWait(long usec);
59 
60  bool Allocate(const char* name, const char* server_name, int value);
61  bool Connect(const char* name, const char* server_name);
62  bool ConnectInput(const char* name, const char* server_name);
63  bool ConnectOutput(const char* name, const char* server_name);
64  bool Disconnect();
65  void Destroy();
66 };
67 
68 } // end of namespace
69 
70 
71 #endif
72 
Jack::JackPosixSemaphore
Inter process synchronization using POSIX semaphore.
Definition: JackPosixSemaphore.h:36
Jack::detail::JackSynchro
An inter process synchronization primitive.
Definition: JackSynchro.h:35