1EPOLLIN		0x00000001
2EPOLLPRI	0x00000002
3EPOLLOUT	0x00000004
4EPOLLERR	0x00000008
5EPOLLHUP	0x00000010
6EPOLLNVAL	0x00000020
7EPOLLRDNORM	0x00000040
8EPOLLRDBAND	0x00000080
9EPOLLWRNORM	0x00000100
10EPOLLWRBAND	0x00000200
11EPOLLMSG	0x00000400
12EPOLLRDHUP	0x00002000
13EPOLLEXCLUSIVE	0x10000000
14EPOLLWAKEUP	0x20000000
15EPOLLONESHOT	0x40000000
16EPOLLET		0x80000000
17