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50 lines
1.0 KiB
C++
50 lines
1.0 KiB
C++
//
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// Created by koncord on 19.03.16.
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//
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#pragma once
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#ifdef _WIN32
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#include <winsock2.h>
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typedef HMODULE lib_t;
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#else
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#include <dlfcn.h>
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typedef void *lib_t;
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#endif
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template<typename R = void *>
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struct SystemInterface
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{
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union
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{
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R result;
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#ifdef _WIN32
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decltype(GetProcAddress(lib_t(), nullptr)) data;
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#else
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decltype(dlsym(lib_t(), nullptr)) data;
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#endif
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};
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#ifndef _WIN32
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static_assert(sizeof(result) == sizeof(data), "R should have the same size");
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#endif
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SystemInterface() : data(nullptr) {}
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explicit operator bool() { return data; }
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#ifdef _WIN32
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SystemInterface(lib_t handle, const char* name) : data(GetProcAddress(handle, name)) {}
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#else
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SystemInterface(lib_t handle, const char *name) : data(dlsym(handle, name)) {}
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#endif
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};
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#ifdef _WIN32
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#define OpenLibrary(pluginName) LoadLibrary(pluginName)
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#define CloseLibrary(lib) FreeLibrary(lib)
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#else
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#define OpenLibrary(pluginName) dlopen(pluginName, RTLD_LAZY | RTLD_LOCAL)
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#define CloseLibrary(lib) dlclose(lib)
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#endif
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