(PECL ev >= 0.2.0)
EvLoop::suspend — Suspend the loop
EvLoop::suspend() and EvLoop::resume() methods suspend and resume a loop correspondingly.
锟剿猴拷锟斤拷没锟叫诧拷锟斤拷锟斤拷
没锟叫凤拷锟斤拷值锟斤拷