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52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* Compatibility definitions for System V `poll' interface.
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Copyright (C) 1994, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _SYS_POLL_H
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#define _SYS_POLL_H 1
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#include <features.h>
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/* Get the platform dependent bits of `poll'. */
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#include <bits/poll.h>
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__BEGIN_DECLS
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/* Data structure describing a polling request. */
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struct pollfd
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{
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int fd; /* File descriptor to poll. */
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short int events; /* Types of events poller cares about. */
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short int revents; /* Types of events that actually occurred. */
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};
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/* Poll the file descriptors described by the NFDS structures starting at
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FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
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an event to occur; if TIMEOUT is -1, block until an event occurs.
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Returns the number of file descriptors with events, zero if timed out,
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or -1 for errors. */
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extern int __poll (struct pollfd *__fds, unsigned long int __nfds,
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int __timeout) __THROW;
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extern int poll (struct pollfd *__fds, unsigned long int __nfds, int __timeout)
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__THROW;
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__END_DECLS
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#endif /* sys/poll.h */
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