UContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process,
SwappedContextFactory* factory);
~UContext() override;
UContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process,
SwappedContextFactory* factory);
~UContext() override;