EventBufferEvent::setWatermark

(PECL event >= 1.2.6-beta)

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

public function 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 invocation. See » Fast portable non-blocking network programming with Libevent: Callbacks and watermarks

No value is returned.