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 __JackFifo__
21 #define __JackFifo__
22 
23 #include "JackSynchro.h"
24 #include "JackCompilerDeps.h"
25 #include <assert.h>
26 #include <poll.h>
27 
28 namespace Jack
29 {
30 
31 /*!
32 \brief Inter process synchronization using Fifo.
33 */
34 
35 class SERVER_EXPORT JackFifo : public detail::JackSynchro
36 {
37 
38     private:
39 
40         int fFifo;
41         pollfd fPoll;
42 
43         bool ConnectAux(const char* name, const char* server_name, int access);
44 
45     protected:
46 
47         void BuildName(const char* name, const char* server_name, char* res, int size);
48 
49     public:
50 
JackFifo()51         JackFifo():JackSynchro(), fFifo(-1)
52         {}
53 
54         bool Signal();
55         bool SignalAll();
56         bool Wait();
57         bool TimedWait(long usec);
58 
59         bool Allocate(const char* name, const char* server_name, int value);
60         bool Connect(const char* name, const char* server_name);
61         bool ConnectInput(const char* name, const char* server_name);
62         bool ConnectOutput(const char* name, const char* server_name);
63         bool Disconnect();
64         void Destroy();
65 };
66 
67 } // end of namespace
68 
69 
70 #endif
71 
72