mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-27 04:41:02 +08:00
44 lines
2.0 KiB
C
44 lines
2.0 KiB
C
/* Copyright (C) 1997, 2000 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _SYS_POLL_H
|
|
# error "Never use <bits/poll.h> directly; include <sys/poll.h> instead."
|
|
#endif
|
|
|
|
/* Event types that can be polled for. These bits may be set in `events'
|
|
to indicate the interesting event types; they will appear in `revents'
|
|
to indicate the status of the file descriptor. */
|
|
#define POLLIN 0x0001 /* There is data to read. */
|
|
#define POLLPRI 0x0002 /* There is urgent data to read. */
|
|
#define POLLOUT 0x0004 /* Writing now will not block. */
|
|
|
|
#ifdef __USE_XOPEN
|
|
/* These values are defined in XPG4.2. */
|
|
# define POLLRDNORM 0x0010 /* Normal data may be read. */
|
|
# define POLLRDBAND 0x0020 /* Priority data may be read. */
|
|
# define POLLWRNORM POLLOUT /* Writing now will not block. */
|
|
# define POLLWRBAND 0x0040 /* Priority data may be written. */
|
|
#endif
|
|
|
|
/* Event types always implicitly polled for. These bits need not be set in
|
|
`events', but they will appear in `revents' to indicate the status of
|
|
the file descriptor. */
|
|
#define POLLERR 0x4000 /* Error condition. */
|
|
#define POLLHUP 0x2000 /* Hung up. */
|
|
#define POLLNVAL 0x8000 /* Invalid polling request. */
|