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poll.h
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C/C++ Source or Header
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1999-07-20
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/*
* poll.h
*
* Copyright (c) 1997-8 Graham Barr <gbarr@pobox.com>. All rights reserved.
* This program is free software; you can redistribute it and/or
* modify it under the same terms as Perl itself.
*
*/
#ifndef POLL_H
# define POLL_H
#if (defined(HAS_POLL) && defined(I_POLL)) || defined(POLLWRBAND)
# include <poll.h>
#else
#ifdef HAS_SELECT
/* We shall emulate poll using select */
#define EMULATE_POLL_WITH_SELECT
typedef struct pollfd {
int fd;
short events;
short revents;
} pollfd_t;
#define POLLIN 0x0001
#define POLLPRI 0x0002
#define POLLOUT 0x0004
#define POLLRDNORM 0x0040
#define POLLWRNORM POLLOUT
#define POLLRDBAND 0x0080
#define POLLWRBAND 0x0100
#define POLLNORM POLLRDNORM
/* Return ONLY events (NON testable) */
#define POLLERR 0x0008
#define POLLHUP 0x0010
#define POLLNVAL 0x0020
int poll (struct pollfd *, unsigned long, int);
#ifndef HAS_POLL
# define HAS_POLL
#endif
#endif /* HAS_SELECT */
#endif /* I_POLL */
#endif /* POLL_H */