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/* sys/poll.h
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
#ifndef _SYS_POLL_H
#define _SYS_POLL_H
#include <sys/cdefs.h>
#include <sys/types.h>
#include <signal.h>
__BEGIN_DECLS
#define POLLIN 1 /* Set if data to read. */
#define POLLPRI 2 /* Set if urgent data to read. */
#define POLLOUT 4 /* Set if writing data wouldn't block. */
#define POLLERR 8 /* An error occured. */
#define POLLHUP 16 /* Shutdown or close happened. */
#define POLLNVAL 32 /* Invalid file descriptor. */
#define NPOLLFILE 64 /* Number of canonical fd's in one call to poll(). */
/* The following values are defined by XPG4. */
#define POLLRDNORM POLLIN
#define POLLRDBAND POLLPRI
#define POLLWRNORM POLLOUT
#define POLLWRBAND POLLOUT
struct pollfd {
int fd;
short events;
short revents;
};
typedef unsigned int nfds_t;
extern int poll __P ((struct pollfd *fds, nfds_t nfds, int timeout));
extern int ppoll __P ((struct pollfd *fds, nfds_t nfds,
const struct timespec *timeout_ts,
const sigset_t *sigmask));
__END_DECLS
#endif /* _SYS_POLL_H */
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