PHP - Manual: Ev::recommendedBackends
2024-11-15
Ev::recommendedBackends
(PECL ev >= 0.2.0)
Ev::recommendedBackends — Returns a bit mask of recommended backends for current platform
说明
final
public
static
Ev::recommendedBackends(): int
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.
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
示例 #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;
}
?>
参见
- 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
add a note
User Contributed Notes
There are no user contributed notes for this page.
官方地址：https://www.php.net/manual/en/ev.recommendedbackends.php
IT
PHP
编程语言
Linux
开发编程
科技
Elasticsearch
HTML/CSS/XML
网络
JAVA
NoSQL
数据库
面试
C/C++
Golang
Git
算法
操作系统
正则表达式
Redis
互联网
MySql
JavaScript
运维
软件
国际
架构设计
Mac OS
TCP/IP
Excel
Vim
Windows
Socket
Oracle
VR
MongoDB
Python
运营
MemCache
商业
硬件
电子
娱乐
设计
nginx
摄影
游戏
WordPress
HTTP
团建
数码电器
广告
--
php7 安装fileinfo扩展
preg_split — 通过一个正则表达式分隔字符串
php位值,解决 PHP 中 usort 在值相同时改变原始位置的问题
[PHP] inet_pton/inet_ntop IP地址转换函数
array_multisort() 多字段排序
PHPMailer设置utf8 PHPMailer字符集CharSet
ADORecordSet对象
adodb手册
PHP 8.1
[鸟哥]PHP_INT_MIN 和 -9223372036854775808
opcache预加载
Composer的Packagist资源
mysql面试题
[鸟哥]PHP FFI详解 - 一种全新的PHP扩展方式
PHP7添加redis扩展
PHP获取指定函数定义在哪个文件中及行号
PHP mkdir()写出来的权限与mode值不符合
adodb连接mysql多个数据库的问题
利用php soap实现web service
ADOConnection 公用函数