1*53ee8cc1Swenshuai.xi /* 2*53ee8cc1Swenshuai.xi * include/linux/eventpoll.h ( Efficent event polling implementation ) 3*53ee8cc1Swenshuai.xi * Copyright (C) 2001,...,2006 Davide Libenzi 4*53ee8cc1Swenshuai.xi * 5*53ee8cc1Swenshuai.xi * This program is free software; you can redistribute it and/or modify 6*53ee8cc1Swenshuai.xi * it under the terms of the GNU General Public License as published by 7*53ee8cc1Swenshuai.xi * the Free Software Foundation; either version 2 of the License, or 8*53ee8cc1Swenshuai.xi * (at your option) any later version. 9*53ee8cc1Swenshuai.xi * 10*53ee8cc1Swenshuai.xi * Davide Libenzi <davidel@xmailserver.org> 11*53ee8cc1Swenshuai.xi * 12*53ee8cc1Swenshuai.xi */ 13*53ee8cc1Swenshuai.xi 14*53ee8cc1Swenshuai.xi #ifndef _LINUX_EVENTPOLL_H 15*53ee8cc1Swenshuai.xi #define _LINUX_EVENTPOLL_H 16*53ee8cc1Swenshuai.xi 17*53ee8cc1Swenshuai.xi #include <linux/types.h> 18*53ee8cc1Swenshuai.xi 19*53ee8cc1Swenshuai.xi 20*53ee8cc1Swenshuai.xi /* Valid opcodes to issue to sys_epoll_ctl() */ 21*53ee8cc1Swenshuai.xi #define EPOLL_CTL_ADD 1 22*53ee8cc1Swenshuai.xi #define EPOLL_CTL_DEL 2 23*53ee8cc1Swenshuai.xi #define EPOLL_CTL_MOD 3 24*53ee8cc1Swenshuai.xi 25*53ee8cc1Swenshuai.xi /* Set the One Shot behaviour for the target file descriptor */ 26*53ee8cc1Swenshuai.xi #define EPOLLONESHOT (1 << 30) 27*53ee8cc1Swenshuai.xi 28*53ee8cc1Swenshuai.xi /* Set the Edge Triggered behaviour for the target file descriptor */ 29*53ee8cc1Swenshuai.xi #define EPOLLET (1 << 31) 30*53ee8cc1Swenshuai.xi 31*53ee8cc1Swenshuai.xi /* 32*53ee8cc1Swenshuai.xi * On x86-64 make the 64bit structure have the same alignment as the 33*53ee8cc1Swenshuai.xi * 32bit structure. This makes 32bit emulation easier. 34*53ee8cc1Swenshuai.xi * 35*53ee8cc1Swenshuai.xi * UML/x86_64 needs the same packing as x86_64 36*53ee8cc1Swenshuai.xi */ 37*53ee8cc1Swenshuai.xi #ifdef __x86_64__ 38*53ee8cc1Swenshuai.xi #define EPOLL_PACKED __attribute__((packed)) 39*53ee8cc1Swenshuai.xi #else 40*53ee8cc1Swenshuai.xi #define EPOLL_PACKED 41*53ee8cc1Swenshuai.xi #endif 42*53ee8cc1Swenshuai.xi 43*53ee8cc1Swenshuai.xi struct epoll_event { 44*53ee8cc1Swenshuai.xi __u32 events; 45*53ee8cc1Swenshuai.xi __u64 data; 46*53ee8cc1Swenshuai.xi } EPOLL_PACKED; 47*53ee8cc1Swenshuai.xi 48*53ee8cc1Swenshuai.xi 49*53ee8cc1Swenshuai.xi #endif /* #ifndef _LINUX_EVENTPOLL_H */ 50*53ee8cc1Swenshuai.xi 51