Fawkes API
Fawkes Development Version
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00001 00002 /*************************************************************************** 00003 * bb_shmem_header.h - BlackBoard shared memory header 00004 * 00005 * Created: Thu Oct 19 14:19:06 2006 (Anne's 25th Birthday) 00006 * Copyright 2006 Tim Niemueller [www.niemueller.de] 00007 * 00008 ****************************************************************************/ 00009 00010 /* This program is free software; you can redistribute it and/or modify 00011 * it under the terms of the GNU General Public License as published by 00012 * the Free Software Foundation; either version 2 of the License, or 00013 * (at your option) any later version. A runtime exception applies to 00014 * this software (see LICENSE.GPL_WRE file mentioned below for details). 00015 * 00016 * This program is distributed in the hope that it will be useful, 00017 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00018 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00019 * GNU Library General Public License for more details. 00020 * 00021 * Read the full text in the LICENSE.GPL_WRE file in the doc directory. 00022 */ 00023 00024 #ifndef __BLACKBOARD_SHMEM_HEADER_H_ 00025 #define __BLACKBOARD_SHMEM_HEADER_H_ 00026 00027 #include <utils/ipc/shm.h> 00028 #include <blackboard/internal/memory_manager.h> 00029 00030 namespace fawkes { 00031 00032 class SharedMemory; 00033 00034 class BlackBoardSharedMemoryHeader : public SharedMemoryHeader 00035 { 00036 private: 00037 /** This struct determines the header in the shared memory segment 00038 */ 00039 typedef struct { 00040 unsigned int version; /**< version of the BB */ 00041 void *shm_addr; /**< base addr of shared memory */ 00042 chunk_list_t *free_list_head; /**< offset of the free chunks list head */ 00043 chunk_list_t *alloc_list_head; /**< offset of the allocated chunks list head */ 00044 } BlackBoardSharedMemoryHeaderData; 00045 00046 public: 00047 BlackBoardSharedMemoryHeader(unsigned int version); 00048 BlackBoardSharedMemoryHeader(size_t data_size, unsigned int version); 00049 BlackBoardSharedMemoryHeader(const BlackBoardSharedMemoryHeader *h); 00050 virtual ~BlackBoardSharedMemoryHeader(); 00051 void set_shared_memory(SharedMemory *shmem); 00052 virtual bool matches(void *memptr); 00053 virtual size_t size(); 00054 virtual void initialize(void *memptr); 00055 virtual void set(void *memptr); 00056 virtual void reset(); 00057 virtual size_t data_size(); 00058 virtual SharedMemoryHeader * clone() const; 00059 virtual bool operator==(const fawkes::SharedMemoryHeader &s) const; 00060 chunk_list_t * free_list_head(); 00061 chunk_list_t * alloc_list_head(); 00062 void set_free_list_head(chunk_list_t *flh); 00063 void set_alloc_list_head(chunk_list_t *alh); 00064 00065 unsigned int version() const; 00066 00067 private: 00068 size_t _data_size; 00069 unsigned int _version; 00070 BlackBoardSharedMemoryHeaderData *data; 00071 SharedMemory *shmem; 00072 }; 00073 00074 } // end namespace fawkes 00075 00076 #endif