GuestMemoryMapping.hh

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/*
 * Copyright 2021 Assured Information Security, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once
 
#include <introvirt/util/compiler.hh>
 
#include <cstdint>
 
namespace introvirt {
 
class GuestMemoryMapping final {
  public:
    void* get() { return mapping_; }
 
    const void* get() const { return mapping_; }
 
    unsigned int length() const { return length_; }
 
    GuestMemoryMapping() : mapping_(nullptr), length_(0) {}
 
    GuestMemoryMapping(void* mapping, unsigned int length) : mapping_(mapping), length_(length) {}
 
    GuestMemoryMapping(const GuestMemoryMapping&) = delete;
 
    GuestMemoryMapping& operator=(const GuestMemoryMapping&) = delete;
 
    GuestMemoryMapping(GuestMemoryMapping&&) noexcept;
 
    GuestMemoryMapping& operator=(GuestMemoryMapping&&) noexcept HOT;
 
    ~GuestMemoryMapping() HOT;
 
  private:
    void* mapping_;
    std::size_t length_;
};
 
} // namespace introvirt