macosx/JackMachSemaphore.h

   1 /*
   2 Copyright (C) 2004-2006 Grame
   3
   4 This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 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 General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifndef __JackMacSemaphore__
  21 #define __JackMacSemaphore__
  22
  23 #include "JackSynchro.h"
  24 #include <mach/mach.h>
  25 #include <mach/mach_types.h>
  26 #include <mach/message.h>
  27 #include <mach/mach_error.h>
  28 #include <servers/bootstrap.h>
  29 #include <mach/semaphore.h>
  30
  31 namespace Jack
  32 {
  33
  34 /*!
  35 \brief Inter process synchronization using using Mach semaphore.
  36 */
  37
  38 class JackMachSemaphore : public JackSynchro
  39 {
  40
  41     private:
  42
  43         semaphore_t fSemaphore;
  44         static mach_port_t fBootPort;
  45
  46     protected:
  47
  48         void BuildName(const char* name, char* res);
  49
  50     public:
  51
  52         JackMachSemaphore(): JackSynchro(), fSemaphore(0)
  53         {}
  54         virtual ~JackMachSemaphore()
  55         {}
  56
  57         bool Signal();
  58         bool SignalAll();
  59         bool Wait();
  60         bool TimedWait(long usec);
  61
  62         bool Allocate(const char* name, int value);
  63         bool Connect(const char* name);
  64         bool ConnectInput(const char* name);
  65         bool ConnectOutput(const char* name);
  66         bool Disconnect();
  67         void Destroy();
  68 };
  69
  70
  71 } // end of namespace
  72
  73
  74 #endif
  75