event_buffer_watermark_set
(PECL libevent >= 0.0.1)
event_buffer_watermark_set — Set the watermarks for read and write events
说明
event_buffer_watermark_set ( resource
$bevent , int $events , int $lowmark , int $highmark ) : void Sets the watermarks for read and write events. Libevent does not invoke read callback unless there is at least lowmark bytes in the input buffer; if the read buffer is beyond the highmark, reading is stopped. On output, the write callback is invoked whenever the buffered data falls below the lowmark.
参数
-
bevent -
Valid buffered event resource.
-
events -
Any combination of
EV_READandEV_WRITE. -
lowmark -
Low watermark.
-
highmark -
High watermark.
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