- - allow multiple signal handlers per signal
- - when a handler returns an error, just turn off its event source,
- but do not return anything up to the event loop caller. Instead
- add parameter to sd_event_request_quit() to take retval. This way
- errors rippling upwards are the option, not the default
- - child pid handling: first invoke waitid(WNOHANG) and call event handler, only afterwards reap the process
- - native support for watchdog stuff