51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* sys/poll.h
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Copyright 2000, 2001, 2006, 2011 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#ifndef _SYS_POLL_H
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#define _SYS_POLL_H
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <signal.h>
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__BEGIN_DECLS
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#define POLLIN 1 /* Set if data to read. */
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#define POLLPRI 2 /* Set if urgent data to read. */
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#define POLLOUT 4 /* Set if writing data wouldn't block. */
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#define POLLERR 8 /* An error occured. */
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#define POLLHUP 16 /* Shutdown or close happened. */
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#define POLLNVAL 32 /* Invalid file descriptor. */
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#define NPOLLFILE 64 /* Number of canonical fd's in one call to poll(). */
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/* The following values are defined by XPG4. */
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#define POLLRDNORM POLLIN
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#define POLLRDBAND POLLPRI
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#define POLLWRNORM POLLOUT
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#define POLLWRBAND POLLOUT
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struct pollfd {
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int fd;
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short events;
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short revents;
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};
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typedef unsigned int nfds_t;
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extern int poll __P ((struct pollfd *fds, nfds_t nfds, int timeout));
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extern int ppoll __P ((struct pollfd *fds, nfds_t nfds,
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const struct timespec *timeout_ts,
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const sigset_t *sigmask));
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__END_DECLS
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#endif /* _SYS_POLL_H */
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