(PECL event >= 1.2.6-beta)
Represents configuration structure which could be used in construction of the EventBase .
$method) : bool
$feature) : bool
$min_priority) : void
Requires a backend method that supports edge-triggered I/O.
Requires a backend method where adding or deleting a single event, or having a single event become active, is an O(1) operation.
Requires a backend method that can support arbitrary file descriptor types, and not just sockets.