51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
//
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// Created by Kirill Zhukov on 20.04.2025.
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//
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#ifndef SHAREDMEMORYMANAGER_H
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#define SHAREDMEMORYMANAGER_H
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#include <string>
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#include <stdexcept>
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#include <fcntl.h> // O_CREAT, O_RDWR
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#include <unistd.h> // ftruncate, close
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#include <sys/mman.h> // mmap, munmap, shm_open, shm_unlink
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#include <cstring>
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#include <cstdint>
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namespace usub::core
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{
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class SharedMemoryManager
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{
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public:
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SharedMemoryManager(const std::string& name, size_t size, bool create_new = true);
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~SharedMemoryManager();
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[[nodiscard]] void* base_ptr() const noexcept;
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[[nodiscard]] size_t size() const noexcept;
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[[nodiscard]] const std::string& name() const noexcept;
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void destroy();
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static bool exists(const std::string& name);
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[[nodiscard]] bool needs_init() const noexcept;
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private:
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void create();
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void open();
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private:
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std::string shm_name;
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size_t shm_size;
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int shm_fd;
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void* shm_ptr;
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};
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} // namespace usub::utils
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#endif //SHAREDMEMORYMANAGER_H
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