(PECL ev >= 0.2.0)
EvWatcher::keepalive — Configures whether to keep the loop from returning
$value
= ?
) : bool
Configures whether to keep the loop from returning. With keepalive
value
set to false the watcher won't keep
Ev::run()
/
EvLoop::run()
from returning even though the watcher is active.
Watchers have keepalive
value
true by default.
Clearing keepalive status is useful when returning from Ev::run() / EvLoop::run() just because of the watcher is undesirable. It could be a long running UDP socket watcher or so.
value
With keepalive
value
set to false the watcher won't keep
Ev::run()
/
EvLoop::run()
from returning even though the watcher is active.
Returns the previous state.
示例 #1 Register an I/O watcher for some UDP socket but do not keep the event loop from running just because of that watcher.
<?php
$udp_socket = ...
$udp_watcher = new EvIo($udp_socket, Ev::READ, function () { /* ... */ });
$udp_watcher->keepalive(FALSE);
?>