class ThreadError

Parent:
StandardError

Raised when an invalid operation is attempted on a thread.

For example, when no other thread has been started:

Thread.stop

This will raises the following exception:

ThreadError: stopping only thread
note: use sleep to stop forever

Ruby Core © 1993–2017 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.