Method Pike.__Backend()->executing_thread()
- Method
executing_thread
 Thread.Threadexecuting_thread()
intexecuting_thread()- Description
 Return the thread currently executing in the backend. I.e. the thread that has called `() and hasn't exited from that call. Zero is returned if there's no thread in the backend.
If Pike is compiled without thread support then
1is returned if we're inside the backend,0otherwise.