mozilla/rust — pull request #8566 by toddaaro (2013-08-16 23:43:48+00:00)
Title: An optimization of idle callbacks such that there is now a single toggleable idle callback per scheduler.

Instead of a furious storm of idle callbacks we just have one. This is a major performance gain - around 40% on my machine for the ping pong bench.

Also in this PR is a cleanup commit for the scheduler code. Was previously up as a separate PR, but bors load + imminent merge hell led me to roll them together. Was #8549.