Ev::nowUpdate
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# Ev::recommendedBackends

(PECL ev >= 0.2.0)

Ev::recommendedBackends — Returns a bit mask of recommended backends for current platform.

### Descrição

final public static void Ev::recommendedBackends ( void )

Returns the set of all backends compiled into this binary of libev and also recommended for this platform, meaning it will work for most file descriptor types. This set is often smaller than the one returned by ev_supported_backends() , as for example kqueue is broken on most BSD systems and will not be auto-detected unless it is requested explicitly. This is the set of backends that libev will probe no backends specified explicitly.

### Parâmetros

Esta função não possui parâmetros.

### Valor Retornado

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

### Exemplos

Exemplo #1 Embedding one loop into another

`<?php
/*
* Try to get an embeddable event loop and embed it into the default event loop.
* If it is impossible, use the default
* loop. The default loop is stored in $loop_hi, while the embeddable loop is
* stored in $loop_lo(which is $loop_hi in the case no embeddable loop can be
* used).
*
* Sample translated to PHP
* http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod#Examples_CONTENT-9
*/
$loop_hi = EvLoop::defaultLoop();
$loop_lo = NULL;
$embed = NULL;
/*
* See if there is a chance of getting one that works
* (flags' value of 0 means autodetection)
*/
$loop_lo = Ev::embeddableBackends() & Ev::recommendedBackends()
? new EvLoop(Ev::embeddableBackends() & Ev::recommendedBackends())
: 0;
if ($loop_lo) {
$embed = new EvEmbed($loop_lo, function () {});
} else {
$loop_lo = $loop_hi;
}
?>`

### Veja Também

- EvEmbed
- Ev::embeddableBackends() - Returns the set of backends that are embeddable in other event loops.
- Ev::supportedBackends() - Returns the set of backends supported by current libev configuration.
- Backend flags
- Examples

Ev::nowUpdate
Ev::resume
Ev
PHP Manual