# 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