EventBufferEvent::setWatermark

(PECL event >= 1.2.6-beta)

EventBufferEvent::setWatermark — Adjusts read and/or write watermarks

说明

public EventBufferEvent::setWatermark ( int $events , int $lowmark , int $highmark ) : void

Adjusts the read watermarks, the write watermarks , or both, of a single buffer event.

A buffer event watermark is an edge, a value specifying number of bytes to be read or written before callback is invoked. By default every read/write event triggers a callback invokation. See » Fast portable non-blocking network programming with Libevent: Callbacks and watermarks

参数

events

Bitmask of Event::READ , Event::WRITE , or both.

lowmark

Minimum watermark value.

highmark

Maximum watermark value. 0 means "unlimited".

返回值

没有返回值。

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