Trustin Lee b4bc47e280 Code clean-up
Motivation:

It is less confusing not to spread Thread.interrupt() calls.

Modification:

- Comments
- Move generatorThread.interrupt() to where currentThread.interrupt() is
  triggered

Result:

Code that is easier to read
2014-04-25 17:44:15 +09:00
..
2014-04-25 17:44:15 +09:00