收割已ready的fd
int pendingcnt[]
epoll
int *fdchanges
w;events;
变更的fd
ANDPENDING[]
ev_io
ev_watcher_list
+ operation1(params):returnType- operation2(params)- operation3()
ANFD
ev_watcher_list *head;unsigned char events;unsigned char reify;unsigned char emask;unsigned char unused;
ev_loop
动态数组
int *pedings
pri1
pri2
