Author :
Dan Rosen
Date :
2019-03-26 13:33:57
Hash :2f184f8b Message :evwatch: Add "prepare" and "check" watchers.
Adds two new callbacks: "prepare" watchers, which fire immediately
before we poll for I/O, and "check" watchers, which fire immediately
after we finish polling and before we process events. This allows other
event loops to be embedded into libevent's, and enables certain
performance monitoring.
Closes: #710
Dan Rosen