posix/JackFifo.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 __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
  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