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/********************************************************************
* Description: shm.hh
*
* Derived from a work by Fred Proctor & Will Shackleford
*
* Author:
* License: LGPL Version 2
* System: Linux
*
* Copyright (c) 2004 All rights reserved.
*
* Last change:
********************************************************************/
#ifndef SHAREDMEM_HH
#define SHAREDMEM_HH
extern "C" {
#include <sys/types.h> /* key_t */
#include <stddef.h> /* size_t */
#include "_shm.h" /* shm_t */
}
#define RCS_SHAREDMEM_NOCREATE 0x00 /* just attach to existing sharedmem */
#define RCS_SHAREDMEM_CREATE 0x01 /* create sharedmem */
class RCS_SHAREDMEM {
public:
RCS_SHAREDMEM(key_t key, size_t size, int oflag, int mode = 0);
~RCS_SHAREDMEM();
int nattch(); /* how many processes are attached */
int create_errno; /* 0 or stored errno after shmget failed */
void *addr; /* pointer to shared memory */
int delete_totally; /* Flag to clean the sharedmem completely */
private:
shm_t * shm;
public:
int created;
private:
RCS_SHAREDMEM(RCS_SHAREDMEM & shm); // Don't copy me.
};
#endif
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