tornadoweb/tornado — pull request #1211 by socketpair (2014-09-29 14:56:35+00:00)
Title: gen.Locker implementation

I did not check that seriously, but this is first implementation of asynchronous lockers.

Problems:
1. big stack trace (``stackcontextwrap`` needed?)
2. API is not exactly same as ``asyncio.Lock()``