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 #if !defined (BLOCXX_HAVE_SYS_IPC_H) && !defined (BLOCXX_HAVE_SYS_SEM_H) 00039 #error "Port me!" 00040 #else 00041 00042 #include "blocxx/BLOCXX_config.h" 00043 #include "blocxx/Exception.hpp" 00044 00045 #include <sys/types.h> 00046 #include <sys/ipc.h> 00047 #include <sys/sem.h> 00048 00049 00050 namespace BLOCXX_NAMESPACE 00051 { 00052 00053 BLOCXX_DECLARE_APIEXCEPTION(IPCMutex, BLOCXX_COMMON_API); 00054 00055 00056 class IPCMutex 00057 { 00058 public: 00069 IPCMutex(int semId); 00070 ~IPCMutex() {}; 00071 00075 void wait(); 00076 00080 void signal(); 00085 int getId() { return m_semid;} 00086 00091 static void free(int semKey); 00092 private: 00093 int m_semid; 00094 struct sembuf m_sbuf; 00095 union semun 00096 { 00097 int val; 00098 struct sumid_ds* buf; 00099 unsigned short* array; 00100 } m_arg; 00101 00102 }; 00103 00105 00119 class IPCMutexLock 00120 { 00121 public: 00122 IPCMutexLock(IPCMutex& sem); 00123 ~IPCMutexLock(); 00124 private: 00125 IPCMutex& m_sem; 00126 }; 00127 00128 } // end namespace 00129 00130 #endif // #if !defined (BLOCXX_HAVE_SYS_IPC_H) && !defined (BLOCXX_HAVE_SYS_SEM_H) 00131 #endif // #ifndef _IPCMUTEXLOCK_HPP_INCLUDE_GUARD_ 00132