ConstAllocator.h

/* Copyright (c) 2015-2016, Human Brain Project
 *                          Daniel.Nachbaur@epfl.ch
 */

#ifndef ZEROBUF_CONSTALLOCATOR_H
#define ZEROBUF_CONSTALLOCATOR_H

#include <zerobuf/Allocator.h> // base class
#include <zerobuf/api.h>

namespace zerobuf
{
class ConstAllocator : public Allocator
{
public:
    ZEROBUF_API ConstAllocator(const uint8_t* data, size_t size);

    ZEROBUF_API ~ConstAllocator();

    const uint8_t* getData() const final { return _data; }
    size_t getSize() const final { return _size; }
    bool isMutable() const final { return false; }
private:
    ConstAllocator(const ConstAllocator&) = delete;
    ConstAllocator& operator=(const ConstAllocator&) = delete;

    uint8_t* getData() final
    {
        throw std::runtime_error("No mutable getData() for ConstAllocator");
    }
    void copyBuffer(const void*, size_t) final
    {
        throw std::runtime_error("No copyBuffer for ConstAllocator");
    }
    uint8_t* updateAllocation(size_t, bool, size_t) final
    {
        throw std::runtime_error("No updateAllocation for ConstAllocator");
    }
    void compact(float) final
    {
        throw std::runtime_error("No compact for ConstAllocator");
    }

    const uint8_t* _data;
    const size_t _size;
};
}

#endif