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Ev::supportedBackends

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(PECL ev >= 0.2.0)

Ev::supportedBackends — Returns the set of backends supported by current libev configuration

Description

final public static Ev::supportedBackends ( void ) : void

Returns the set of backends supported by current libev configuration.

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Parameters

This function has no parameters.

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Return Values

Returns a bit mask which can containing backend flags combined using bitwise OR operator.

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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
?>

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See Also

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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