macosx/JackMachSemaphore.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 __JackMachSemaphore__
  21 #define __JackMachSemaphore__
  22
  23 #include "JackCompilerDeps.h"
  24 #include "JackSynchro.h"
  25 #include <mach/mach.h>
  26 #include <servers/bootstrap.h>
  27 #include <mach/semaphore.h>
  28
  29 namespace Jack
  30 {
  31
  32 /*!
  33 \brief Inter process synchronization using using Mach semaphore.
  34 */
  35
  36 class SERVER_EXPORT JackMachSemaphore : public detail::JackSynchro
  37 {
  38
  39     private:
  40
  41         semaphore_t fSemaphore;
  42         static mach_port_t fBootPort;
  43
  44     protected:
  45
  46         void BuildName(const char* name, const char* server_name, char* res);
  47
  48     public:
  49
  50         JackMachSemaphore():JackSynchro(), fSemaphore(0)
  51         {}
  52
  53         bool Signal();
  54         bool SignalAll();
  55         bool Wait();
  56         bool TimedWait(long usec);
  57
  58         bool Allocate(const char* name, const char* server_name, int value);
  59         bool Connect(const char* name, const char* server_name);
  60         bool ConnectInput(const char* name, const char* server_name);
  61         bool ConnectOutput(const char* name, const char* server_name);
  62         bool Disconnect();
  63         void Destroy();
  64 };
  65
  66
  67 } // end of namespace
  68
  69
  70 #endif
  71