PHP Manual
Inotify 函数
Return a number upper than zero if there are pending events

inotify_queue_len

(PECL inotify >= 0.1.2)

inotify_queue_len — Return a number upper than zero if there are pending events

说明

inotify_queue_len ( resource $inotify_instance ) : int

This function allows to know if inotify_read() will block or not. If a number upper than zero is returned, there are pending events and inotify_read() will not block.

参数

inotify_instance: inotify_init()返回的资源

返回值

Returns a number upper than zero if there are pending events.

参见

inotify_init() - Initialize an inotify instance
stream_select() - Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by tv_sec and tv_usec
stream_set_blocking() - 为资源流设置阻塞或者阻塞模式

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