Ev::supportedBackends
(PECL ev >= 0.2.0)
Ev::supportedBackends — Returns the set of backends supported by current libev configuration.
Description
final public static void Ev::supportedBackends ( void )Returns the set of backends supported by current libev configuration.
Parameters
This function has no parameters.
Return Values
Returns a bit mask which can containing backend flags combined using bitwise OR operator.
Examples
Example #1 Embedding loop created with kqueue backend into the default loop
<?php
/*
*?Check?if?kqueue?is?available?but?not?recommended?and?create?a?kqueue?backend
*?for?use?with?sockets?(which?usually?work?with?any?kqueue?implementation).
*?Store?the?kqueue/socket-only?event?loop?in?loop_socket.?(One?might?optionally
*?use?EVFLAG_NOENV,?too)
*
*?Example?borrowed?from
*?http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#Examples_CONTENT-9
*/
$loop????????=?EvLoop::defaultLoop();
$socket_loop?=?NULL;
$embed???????=?NULL;
if?(Ev::supportedBackends()?&?~Ev::recommendedBackends()?&?Ev::BACKEND_KQUEUE)?{
?if?(($socket_loop?=?new?EvLoop(Ev::BACKEND_KQUEUE)))?{
??$embed?=?new?EvEmbed($loop);
?}
}
if?(!$socket_loop)?{
?$socket_loop?=?$loop;
}
//?Now?use?$socket_loop?for?all?sockets,?and?$loop?for?anything?else
?>See Also
- EvEmbed
- Ev::recommendedBackends() - Returns a bit mask of recommended backends for current platform.
- Ev::embeddableBackends() - Returns the set of backends that are embeddable in other event loops.
- Backend flags
← Ev::stop
Ev::suspend →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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