146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
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/*
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* =====================================================================================
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*
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* Filename: myepoll.h
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*
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* Description: myepoll class definition.
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*
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* Version: 1.0
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* Created: 09/08/2018
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* Revision: none
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* Compiler: gcc
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*
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* Author: zhulin, shzhulin3@jd.com
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* Company: JD.com, Inc.
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*
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* =====================================================================================
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*/
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#ifndef _SYS_EPOLL_H_
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#define _SYS_EPOLL_H_
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#if __x86_64__
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#define _SYS_EPOLL_
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#endif
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#ifdef _SYS_EPOLL_
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#include <sys/epoll.h>
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#else
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#include <stdint.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <sys/poll.h>
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#include <asm/unistd.h>
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#include <unistd.h>
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/* Valid opcodes to issue to sys_epoll_ctl() */
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#ifndef EPOLL_CTL_ADD
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#define EPOLL_CTL_ADD 1
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#endif
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#ifndef EPOLL_CTL_DEL
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#define EPOLL_CTL_DEL 2
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#endif
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#ifndef EPOLL_CTL_MOD
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#define EPOLL_CTL_MOD 3
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#endif
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/* These are specified by iBCS2 */
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#if defined(POLLIN) && !defined(EPOLLIN)
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#define EPOLLIN POLLIN
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#endif
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#if defined(POLLPRI) && !defined(EPOLLPRI)
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#define EPOLLPRI POLLPRI
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#endif
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#if defined(POLLOUT) && !defined(EPOLLOUT)
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#define EPOLLOUT POLLOUT
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#endif
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#if defined(POLLERR) && !defined(EPOLLERR)
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#define EPOLLERR POLLERR
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#endif
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#if defined(POLLHUP) && !defined(EPOLLHUP)
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#define EPOLLHUP POLLHUP
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#endif
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#if defined(POLLNVAL) && !defined(EPOLLNVAL)
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#define EPOLLNVAL POLLNVAL
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#endif
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#if defined(POLLRDNORM) && !defined(EPOLLRDNORM)
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#define EPOLLRDNORM POLLRDNORM
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#endif
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#if defined(POLLRDBAND) && !defined(EPOLLRDBAND)
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#define EPOLLRDBAND POLLRDBAND
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#endif
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#if defined(POLLWRNORM) && !defined(EPOLLWRNORM)
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#define EPOLLWRNORM POLLWRNORM
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#endif
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#if defined(POLLWRBAND) && !defined(EPOLLWRBAND)
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#define EPOLLWRBAND POLLWRBAND
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#endif
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#if defined(POLLMSG) && !defined(EPOLLMSG)
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#define EPOLLMSG POLLMSG
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#endif
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/* Set the One Shot behaviour for the target file descriptor */
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#ifndef EPOLLONESHOT
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#define EPOLLONESHOT (1 << 30)
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#endif
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/* Set the Edge Triggered behaviour for the target file descriptor */
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#ifndef EPOLLET
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#define EPOLLET (1 << 31)
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#endif
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/*
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* On x86-64 make the 64bit structure have the same alignment as the
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* 32bit structure. This makes 32bit emulation easier.
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*/
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#ifdef __x86_64__
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#define EPOLL_PACKED __attribute__((packed))
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#else
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#define EPOLL_PACKED
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#endif
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struct epoll_event {
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uint32_t events;
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union {
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void *ptr;
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int fd;
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uint32_t u32;
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uint64_t u64;
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} data;
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} EPOLL_PACKED;
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#ifndef __NR_epoll_create
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#ifdef __x86_64__
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#define __NR_epoll_create 213
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#else
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#define __NR_epoll_create 254
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#endif
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#endif
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#ifndef __NR_epoll_ctl
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#define __NR_epoll_ctl (__NR_epoll_create+1)
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#endif
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#ifndef __NR_epoll_wait
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#define __NR_epoll_wait (__NR_epoll_create+2)
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#endif
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#ifdef __EPOLL_SYSCALLS__
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static inline _syscall1(int, epoll_create, int, maxfds);
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static inline _syscall4(int, epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event *, event);
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static inline _syscall4(int, epoll_wait, int, epfd, struct epoll_event *, events, int, maxevents, int, timeout);
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#else
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static inline int epoll_create( int maxfds) {
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return syscall(__NR_epoll_create, maxfds);
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}
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static inline int epoll_ctl( int epfd, int op, int fd, struct epoll_event * event){
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return syscall(__NR_epoll_ctl, epfd, op, fd, event);
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}
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static inline int epoll_wait( int epfd, struct epoll_event * events, int maxevents, int timeout){
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return syscall(__NR_epoll_wait, epfd, events, maxevents, timeout);
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}
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#endif
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#endif
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#endif
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