FuncSupportThread Gecode::Support::Mutex Gecode::Support::Lock Gecode::Support::Event Gecode::Support::Runnable Gecode::Support::Thread This is very simplistic, just enough for parallel search engines. Do not mistake it for a full-fledged thread package.If the platform supports threads, the macro GECODE_HAS_THREADS is defined. If threads are not supported, all classes are still available, but are noops with the exception of trying to create a new thread which will throw an exception.