On Thu, 21 Nov 2002, Jamie Lokier wrote:
> That is a good idea, if we go for the union.
This is the include file I'm thinking to submit to Ulrich for glibc
inclusion :
#ifndef _SYS_EPOLL_H
#define _SYS_EPOLL_H 1
#include <sys/types.h>
enum EPOLL_EVENTS {
EPOLLIN = 0x001,
#define EPOLLIN EPOLLIN
EPOLLPRI = 0x002,
#define EPOLLPRI EPOLLPRI
EPOLLOUT = 0x004,
#define EPOLLOUT EPOLLOUT
#ifdef __USE_XOPEN
EPOLLRDNORM = 0x040,
#define EPOLLRDNORM EPOLLRDNORM
EPOLLRDBAND = 0x080,
#define EPOLLRDBAND EPOLLRDBAND
EPOLLWRNORM = 0x100,
#define EPOLLWRNORM EPOLLWRNORM
EPOLLWRBAND = 0x200,
#define EPOLLWRBAND EPOLLWRBAND
#endif
#ifdef __USE_GNU
EPOLLMSG = 0x400,
#define EPOLLMSG EPOLLMSG
#endif
EPOLLERR = 0x008,
#define EPOLLERR EPOLLERR
EPOLLHUP = 0x010
#define EPOLLHUP EPOLLHUP
};
/* Valid opcodes to issue to epoll_ctl() */
#define EPOLL_CTL_ADD 1 /* Add a file decriptor to the interface */
#define EPOLL_CTL_DEL 2 /* Remove a file decriptor from the interface */
#define EPOLL_CTL_MOD 3 /* Change file decriptor epoll_event structure */
typedef union epoll_obj {
void *ptr;
int fd;
__uint32_t u32[2];
__uint64_t u64;
} epoll_obj_t;
struct epoll_event {
unsigned short events; /* Required events */
unsigned short revents; /* Returned events */
epoll_obj_t data; /* User data variable */
};
__BEGIN_DECLS
/*
* Creates an epoll interface by suggesting the requested size in terms
* of file descriptors that will be presumably stored inside the interface.
* The integer returned by epoll_create() should be closed with close().
*/
extern int epoll_create(int size);
/*
* Controller function for the epoll interface. Valid values for the "op"
* parameter are the EPOLL_CTL_* constant defined above. The "fd" parameter
* is the target of the operation while the "event" parameter describe which
* events the caller is interested in and the data ( obj ) he associates
* the the file "fd".
*/
extern int epoll_ctl(int epfd, int op, int fd, struct epoll_event *event) __THROW;
/*
* Wait for events on the epoll interface. The function will return the number
* of events that will be available inside the memory area pointed by "events".
* Up to "maxevents" events will be copied. The "timeout" parameter enable the
* caller to specify a miximum wait time in milliseconds ( -1 == infinite ).
*/
extern int epoll_wait(int epfd, struct epoll_event *events, int maxevents,
int timeout) __THROW;
__END_DECLS
#endif /* #ifndef _SYS_EPOLL_H */
Comments ?
- Davide
-
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This archive was generated by hypermail 2b29 : Sat Nov 23 2002 - 22:00:34 EST