EventBufferEvent::setWatermark
(PECL event >= 1.2.6-beta)
EventBufferEvent::setWatermark — Adjusts read and/or write watermarks
說明
public EventBufferEvent::setWatermark( int
$events , int $lowmark , int $highmark ): voidAdjusts 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
參數
-
events Bitmask of
Event::READ,Event::WRITE, or both.-
lowmark Minimum watermark value.
-
highmark Maximum watermark value.
0means "unlimited".
返回值
沒有返回值。