0,0 → 1,50 |
/* Copyright (C) 1997, 2001, 2006 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 Lesser General Public |
License as published by the Free Software Foundation; either |
version 2.1 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 |
Lesser General Public License for more details. |
|
You should have received a copy of the GNU Lesser General Public |
License along with the GNU C Library; 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 0x001 /* There is data to read. */ |
#define POLLPRI 0x002 /* There is urgent data to read. */ |
#define POLLOUT 0x004 /* Writing now will not block. */ |
|
#ifdef __USE_XOPEN |
/* These values are defined in XPG4.2. */ |
# define POLLRDNORM 0x040 /* Normal data may be read. */ |
# define POLLRDBAND 0x080 /* Priority data may be read. */ |
# define POLLWRNORM 0x100 /* Writing now will not block. */ |
# define POLLWRBAND 0x200 /* Priority data may be written. */ |
#endif |
|
#ifdef __USE_GNU |
/* These are extensions for Linux. */ |
# define POLLMSG 0x400 |
# define POLLREMOVE 0x1000 |
# define POLLRDHUP 0x2000 |
#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 0x008 /* Error condition. */ |
#define POLLHUP 0x010 /* Hung up. */ |
#define POLLNVAL 0x020 /* Invalid polling request. */ |