PHP - Manual: EvLoop

2024-11-14

The EvLoop class

(PECL ev >= 0.2.0)

简介

Represents an event loop that is always distinct from the default loop . Unlike the default loop , it cannot handle EvChild watchers.

Having threads we have to create a loop per thread, and use the default loop in the parent thread.

The default event loop is initialized automatically by Ev . It is accessible via methods of the Ev class, or via EvLoop::defaultLoop() method.

类摘要

final class EvLoop {

/* 属性 */

public $data;

public $backend;

public $is_default_loop;

public $iteration;

public $pending;

public $io_interval;

public $timeout_interval;

public $depth;

/* 方法 */

public __construct(
     int $flags = ?,
     mixed $data = NULL ,
     float $io_interval = 0.0 ,
     float $timeout_interval = 0.0
)

public backend(): int

final public check( string $callback , string $data = ?, string $priority = ?): EvCheck

final public child(
     string $pid ,
     string $trace ,
     string $callback ,
     string $data = ?,
     string $priority = ?
): EvChild

public static defaultLoop(
     int $flags = Ev::FLAG_AUTO ,
     mixed $data = NULL ,
     float $io_interval = 0. ,
     float $timeout_interval = 0.
): EvLoop

final public embed(
     string $other ,
     string $callback = ?,
     string $data = ?,
     string $priority = ?
): EvEmbed

final public fork( callable $callback , mixed $data = null , int $priority = 0 ): EvFork

final public idle( callable $callback , mixed $data = null , int $priority = 0 ): EvIdle

public invokePending(): void

final public io(
     mixed $fd ,
     int $events ,
     callable $callback ,
     mixed $data = null ,
     int $priority = 0
): EvIo

public loopFork(): void

public now(): float

public nowUpdate(): void

final public periodic(
     float $offset ,
     float $interval ,
     callable $callback ,
     mixed $data = null ,
     int $priority = 0
): EvPeriodic

final public prepare( callable $callback , mixed $data = null , int $priority = 0 ): EvPrepare

public resume(): void

public run( int $flags = 0 ): void

final public signal(
     int $signum ,
     callable $callback ,
     mixed $data = null ,
     int $priority = 0
): EvSignal

final public stat(
     string $path ,
     float $interval ,
     callable $callback ,
     mixed $data = null ,
     int $priority = 0
): EvStat

public stop( int $how = ?): void

public suspend(): void

final public timer(
     float $after ,
     float $repeat ,
     callable $callback ,
     mixed $data = null ,
     int $priority = 0
): EvTimer

public verify(): void

}

属性

data

Custom data attached to loop

backend

Readonly . The backend flags indicating the event backend in use.

is_default_loop

Readonly . true if it is the default event loop.

iteration

The current iteration count of the loop. See Ev::iteration()

pending

The number of pending watchers. 0 indicates that there are no watchers pending.

io_interval

Higher io_interval allows libev to spend more time collecting EvIo events, so more events can be handled per iteration, at the cost of increasing latency. Timeouts (both EvPeriodic and EvTimer ) will not be affected. Setting this to a non-zero value will introduce an additional sleep() call into most loop iterations. The sleep time ensures that libev will not poll for EvIo events more often than once per this interval, on average. Many programs can usually benefit by setting the io_interval to a value near 0.1 , which is often enough for interactive servers(not for games). It usually doesn't make much sense to set it to a lower value than 0.01 , as this approaches the timing granularity of most systems.

timeout_interval

Higher timeout_interval allows libev to spend more time collecting timeouts, at the expense of increased latency/jitter/inexactness(the watcher callback will be called later). EvIo watchers will not be affected. Setting this to a non-null value will not introduce any overhead in libev . See also » FUNCTIONS CONTROLLING EVENT LOOPS .

depth

The recursion depth. See Ev::depth() .

EvLoop::backend — Returns an integer describing the backend used by libev
EvLoop::check — Creates EvCheck object associated with the current event loop instance
EvLoop::child — Creates EvChild object associated with the current event loop
EvLoop::__construct — Constructs the event loop object
EvLoop::defaultLoop — Returns or creates the default event loop
EvLoop::embed — Creates an instance of EvEmbed watcher associated with the current EvLoop object
EvLoop::fork — Creates EvFork watcher object associated with the current event loop instance
EvLoop::idle — Creates EvIdle watcher object associated with the current event loop instance
EvLoop::invokePending — Invoke all pending watchers while resetting their pending state
EvLoop::io — Create EvIo watcher object associated with the current event loop instance
EvLoop::loopFork — Must be called after a fork
EvLoop::now — Returns the current "event loop time"
EvLoop::nowUpdate — Establishes the current time by querying the kernel, updating the time returned by EvLoop::now in the progress
EvLoop::periodic — Creates EvPeriodic watcher object associated with the current event loop instance
EvLoop::prepare — Creates EvPrepare watcher object associated with the current event loop instance
EvLoop::resume — Resume previously suspended default event loop
EvLoop::run — Begin checking for events and calling callbacks for the loop
EvLoop::signal — Creates EvSignal watcher object associated with the current event loop instance
EvLoop::stat — Creates EvStat watcher object associated with the current event loop instance
EvLoop::stop — Stops the event loop
EvLoop::suspend — Suspend the loop
EvLoop::timer — Creates EvTimer watcher object associated with the current event loop instance
EvLoop::verify — Performs internal consistency checks(for debugging)

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/class.evloop.php

有任何技术问题请点击这里网站运营推广招聘

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

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 mkdir()写出来的权限与mode值不符合 Packagist / Composer 中国全量镜像 PHPstorm 里面Terminal 不能使用 esc键吗退出编辑模式吗常用的php ADODB使用方法集锦 [原创]诡异的php-fpm超时问题

略微加速

PHP官方手册 - 互联网笔记

The EvLoop class

简介

类摘要

属性

目录

User Contributed Notes