SharedMemoryImp.hpp

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/*
 * Copyright (c) 2015 - 2024 Intel Corporation
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef SHAREDMEMORYIMP_HPP_INCLUDE
#define SHAREDMEMORYIMP_HPP_INCLUDE
 
#include "geopm/SharedMemory.hpp"
 
namespace geopm
{
    class SharedMemoryImp : public SharedMemory
    {
        public:
            SharedMemoryImp();
            virtual ~SharedMemoryImp();
            SharedMemoryImp(SharedMemoryImp &other) = delete;
            SharedMemoryImp &operator=(const SharedMemoryImp &other) = delete;
            void *pointer(void) const override;
            std::string key(void) const override;
            size_t size(void) const override;
            void unlink(void) override;
            std::unique_ptr<SharedMemoryScopedLock> get_scoped_lock(void) override;
            void create_memory_region(const std::string &shm_key, size_t size, bool is_secure);
            void attach_memory_region(const std::string &shm_key, unsigned int timeout);
            //         and uid if current permissions allow for the change.
            void chown(const unsigned int uid, const unsigned int gid) const override;
            static std::string construct_shm_path(const std::string &key);
 
        private:
            std::string m_shm_key;
            std::string m_shm_path;
            size_t m_size;
            void *m_ptr;
            bool m_is_linked;
            bool m_do_unlink_check;
    };
}
 
#endif