Ev::supportedBackends

(PECL ev >= 0.2.0)

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

说明

final public static void Ev::supportedBackends ( void )

Returns the set of backends supported by current libev configuration.

参数

此函数没有参数。

返回值

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

范例

Example #1 Embedding loop created with kqueue backend into the default loop

  <?php
 
 $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
 ?>

参见

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
Examples