Mute clang 8 compilation error with gcc pragma
Move the pragma ignoring outside the function to fix the build with gcc.
While here, add equivalent clang pragmas to mute the warning, as well.
Signed-off-by: Enji Cooper <yaneurabeya@gmail.com>
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
