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 mach_port_t fBootPort; 43 44 int fSharedMem; 45 char* fSharedName; 46 47 bool recursiveBootstrapRegister(int counter); 48 49 protected: 50 51 void BuildName(const char* name, const char* server_name, char* res, int size); 52 53 public: 54 JackMachSemaphore()55 JackMachSemaphore():JackSynchro(), fSemaphore(0), fBootPort(0), fSharedMem(0), fSharedName(NULL) 56 {} 57 58 bool Signal(); 59 bool SignalAll(); 60 bool Wait(); 61 bool TimedWait(long usec); 62 63 bool Allocate(const char* name, const char* server_name, int value); 64 bool Connect(const char* name, const char* server_name); 65 bool ConnectInput(const char* name, const char* server_name); 66 bool ConnectOutput(const char* name, const char* server_name); 67 bool Disconnect(); 68 void Destroy(); 69 }; 70 71 72 } // end of namespace 73 74 75 #endif 76 77