/*
 * Copyright 2002-2012 Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _POLL_H
#define _POLL_H


#include <signal.h>
#include <sys/time.h>


typedef unsigned long nfds_t;

struct pollfd {
        int             fd;
        short   events;         /* events to look for */
        short   revents;        /* events that occured */
};

/* events & revents - compatible with the B_SELECT_xxx definitions in Drivers.h */
#define POLLIN          0x0001          /* any readable data available */
#define POLLOUT         0x0002          /* file descriptor is writeable */
#define POLLRDNORM      POLLIN
#define POLLWRNORM      POLLOUT
#define POLLRDBAND      0x0008          /* priority readable data */
#define POLLWRBAND      0x0010          /* priority data can be written */
#define POLLPRI         0x0020          /* high priority readable data */

/* revents only */
#define POLLERR         0x0004          /* errors pending */
#define POLLHUP         0x0080          /* disconnected */
#define POLLNVAL        0x1000          /* invalid file descriptor */


#ifdef __cplusplus
extern "C" {
#endif

extern int poll(struct pollfd *fds, nfds_t numfds, int timeout);
extern int ppoll(struct pollfd *fds, nfds_t numfds,
        const struct timespec *timeout, const sigset_t *sigMask);

#ifdef __cplusplus
}
#endif



#endif /* _POLL_H */