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00001 /******************************************************************************* 00002 * Copyright (C) 2005 Novell, Inc. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions are met: 00006 * 00007 * - Redistributions of source code must retain the above copyright notice, 00008 * this list of conditions and the following disclaimer. 00009 * 00010 * - Redistributions in binary form must reproduce the above copyright notice, 00011 * this list of conditions and the following disclaimer in the documentation 00012 * and/or other materials provided with the distribution. 00013 * 00014 * - Neither the name of Novell, Inc., nor the names of its 00015 * contributors may be used to endorse or promote products derived from this 00016 * software without specific prior written permission. 00017 * 00018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' 00019 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00020 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00021 * ARE DISCLAIMED. IN NO EVENT SHALL Novell, Inc., OR THE 00022 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00023 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00024 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 00025 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 00026 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 00027 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 00028 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 *******************************************************************************/ 00030 00035 #ifndef _BLOCXX_IPCMUTEX_HPP_INCLUDE_GUARD_ 00036 #define _BLOCXX_IPCMUTEX_HPP_INCLUDE_GUARD_ 00037 00038 #include "blocxx/BLOCXX_config.h" 00039 // This class only works on Linux. 00040 #ifdef BLOCXX_GNU_LINUX 00041 #if !defined (BLOCXX_HAVE_SYS_IPC_H) && !defined (BLOCXX_HAVE_SYS_SEM_H) 00042 #error "Port me!" 00043 #else 00044 00045 #include "blocxx/Exception.hpp" 00046 00047 #include <sys/types.h> 00048 #include <sys/ipc.h> 00049 #include <sys/sem.h> 00050 00051 00052 namespace BLOCXX_NAMESPACE 00053 { 00054 00055 BLOCXX_DECLARE_APIEXCEPTION(IPCMutex, BLOCXX_COMMON_API); 00056 00061 class IPCMutex 00062 { 00063 public: 00074 IPCMutex(int semId); 00075 ~IPCMutex() {}; 00076 00080 void wait(); 00081 00085 void signal(); 00090 int getId() { return m_semid;} 00091 00096 static void free(int semKey); 00097 private: 00098 int m_semid; 00099 struct sembuf m_sbuf; 00100 union semun 00101 { 00102 int val; 00103 struct sumid_ds* buf; 00104 unsigned short* array; 00105 } m_arg; 00106 00107 }; 00108 00110 00124 class IPCMutexLock 00125 { 00126 public: 00127 IPCMutexLock(IPCMutex& sem); 00128 ~IPCMutexLock(); 00129 private: 00130 IPCMutex& m_sem; 00131 }; 00132 00133 } // end namespace 00134 00135 #endif // #if !defined (BLOCXX_HAVE_SYS_IPC_H) && !defined (BLOCXX_HAVE_SYS_SEM_H) 00136 #endif // #ifdef BLOCXX_GNU_LINUX 00137 #endif // #ifndef _IPCMUTEXLOCK_HPP_INCLUDE_GUARD_ 00138