# Io Reference

Concurrency / Thread / Thread

|  | For native threads. Example use;
    Thread createThread("1+1") // evals 1+1 in a new thread and an independent Io VM
|  | createThread(aSequence) Creates a new IoState and evals aSequence in it using a new OS thread. Returns self immediately. endCurrentThread Ends the currently running OS thread. threadCount Returns the number of OS threads currently running in the process.