Function thread_id

concurrentqueue.h:95–95

	static const thread_id_t invalid_thread_id  = 0xFFFFFFFFU;
	static const thread_id_t invalid_thread_id2 = 0xFFFFFFFEU;
	static inline thread_id_t thread_id() { return rl::thread_index(); }
} }
#elif defined(_WIN32) || defined(__WINDOWS__) || defined(__WIN32__)
// No sense pulling in windows.h in a header, we'll manually declare the function