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42 lines
806 B
C++
42 lines
806 B
C++
#pragma once
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#include <dlfcn.h>
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#include <memory>
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#include <string>
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#include <boost/noncopyable.hpp>
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namespace DB
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{
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/** Allows you to open a dynamic library and get a pointer to a function from it.
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*/
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class SharedLibrary : private boost::noncopyable
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{
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public:
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explicit SharedLibrary(std::string_view path, int flags = RTLD_LAZY);
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~SharedLibrary();
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template <typename Func>
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Func get(std::string_view name)
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{
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return reinterpret_cast<Func>(getImpl(name));
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}
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template <typename Func>
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Func tryGet(std::string_view name)
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{
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return reinterpret_cast<Func>(getImpl(name, true));
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}
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private:
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void * getImpl(std::string_view name, bool no_throw = false);
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void * handle = nullptr;
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};
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using SharedLibraryPtr = std::shared_ptr<SharedLibrary>;
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}
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