diff --git a/lib/base/CMakeLists.txt b/lib/base/CMakeLists.txt index 18e884de2..e50e330e4 100644 --- a/lib/base/CMakeLists.txt +++ b/lib/base/CMakeLists.txt @@ -65,6 +65,7 @@ set(base_SOURCES scriptutils.cpp scriptutils.hpp serializer.cpp serializer.hpp shared.hpp + shared-memory.hpp shared-object.hpp singleton.hpp socket.cpp socket.hpp diff --git a/lib/base/shared-memory.hpp b/lib/base/shared-memory.hpp new file mode 100644 index 000000000..dd350c89f --- /dev/null +++ b/lib/base/shared-memory.hpp @@ -0,0 +1,45 @@ +/* Icinga 2 | (c) 2023 Icinga GmbH | GPLv2+ */ + +#pragma once + +#include +#include + +namespace icinga +{ + +/** + * Type-safe memory shared across fork(2). + * + * @ingroup base + */ +template +class SharedMemory +{ +public: + template + SharedMemory(Args&&... args) : m_Memory(boost::interprocess::anonymous_shared_memory(sizeof(T))) + { + new(GetAddress()) T(std::forward(args)...); + } + + SharedMemory(const SharedMemory&) = delete; + SharedMemory(SharedMemory&&) = delete; + SharedMemory& operator=(const SharedMemory&) = delete; + SharedMemory& operator=(SharedMemory&&) = delete; + + inline T& Get() const + { + return *GetAddress(); + } + +private: + inline T* GetAddress() const + { + return (T*)m_Memory.get_address(); + } + + boost::interprocess::mapped_region m_Memory; +}; + +}