shmemory.C

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#include <string.h>
#include "bcipc.h"
#include "shmemory.h"


SharedMem::SharedMem(long size)
{
        shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0777);
        if(shmid < 0)
                perror("SharedMem::SharedMem");
        else
        {
                data = (char*)shmat(shmid, 0, 0);
                shmctl(shmid, IPC_RMID, 0);
        }
        this->size = size;
        client = 0;
}

SharedMem::SharedMem(int id, long size)
{
        this->shmid = id;

        data = (char*)shmat(shmid, 0, 0);
        this->size = size;
        client = 1;
}

SharedMem::~SharedMem()
{
        shmdt(data);
        data = 0;
        size = 0;
        shmid = 0;
}

int SharedMem::get_id()
{
        return shmid;
}

long SharedMem::get_size()
{
        return size;
}

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