vcpu_manager.h

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//
// Bareflank Hypervisor
//
// Copyright (C) 2015 Assured Information Security, Inc.
// Author: Rian Quinn        <quinnr@ainfosec.com>
// Author: Brendan Kerrigan  <kerriganb@ainfosec.com>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

#ifndef VCPU_MANAGER_H
#define VCPU_MANAGER_H

#include <map>
#include <memory>

#include <vcpuid.h>
#include <user_data.h>
#include <vcpu/vcpu_factory.h>

class vcpu_manager
{
public:

    virtual ~vcpu_manager() = default;

    static vcpu_manager *instance() noexcept;

    virtual void create_vcpu(vcpuid::type vcpuid, user_data *data = nullptr);

    virtual void delete_vcpu(vcpuid::type vcpuid, user_data *data = nullptr);

    virtual void run_vcpu(vcpuid::type vcpuid, user_data *data = nullptr);

    virtual void hlt_vcpu(vcpuid::type vcpuid, user_data *data = nullptr);

    virtual void write(vcpuid::type vcpuid, const std::string &str) noexcept;

private:

    vcpu_manager() noexcept;
    std::unique_ptr<vcpu> &add_vcpu(vcpuid::type vcpuid, user_data *data);
    std::unique_ptr<vcpu> &get_vcpu(vcpuid::type vcpuid);

private:

    friend class vcpu_ut;

    std::map<vcpuid::type, std::unique_ptr<vcpu>> m_vcpus;

private:

    std::unique_ptr<vcpu_factory> m_vcpu_factory;

    void set_factory(std::unique_ptr<vcpu_factory> factory)
    { m_vcpu_factory = std::move(factory); }

public:

    vcpu_manager(const vcpu_manager &) = delete;
    vcpu_manager &operator=(const vcpu_manager &) = delete;
};

#define g_vcm vcpu_manager::instance()

#endif