kc3-lang/libevent

2019-03-26T13:33:57

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