shared_memory.h

// Copyright (c) 2018, Smart Projects Holdings Ltd
// All rights reserved.
// See LICENSE file for license details.

/*
 * shared_memory.h
 *
 *  Created on: Oct 24, 2013
 *      Author: Janis
 */

#ifndef _UGCS_VSM_SHARED_MEMORY_H_
#define _UGCS_VSM_SHARED_MEMORY_H_

#include <ugcs/vsm/utils.h>

namespace ugcs {
namespace vsm {

class Shared_memory: public std::enable_shared_from_this<Shared_memory>
{
    DEFINE_COMMON_CLASS(Shared_memory, Shared_memory)
public:
    typedef enum {
        OPEN_RESULT_OK,
        OPEN_RESULT_CREATED,
        OPEN_RESULT_ERROR
    } Open_result;

    Shared_memory():
    memory(nullptr)
    {};

    virtual
    ~Shared_memory() {}

    virtual Open_result
    Open(const std::string& name, const size_t size) = 0;

    virtual void
    Close() = 0;

    virtual void*
    Get() {return memory;}

    static bool
    Delete(const std::string& name);

    static Ptr
    Create();

protected:
    void* memory;
};

} /* namespace vsm */
} /* namespace ugcs */
#endif /* _UGCS_VSM_SHARED_MEMORY_H_ */