[thirdparty/glibc.git] / bits / poll.h

/* Copyright (C) 1997 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.  */


/* 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		01              /* There is data to read.  */
#define POLLPRI		02              /* There is urgent data to read.  */
#define POLLOUT		04              /* Writing now will not block.  */

/* Some aliases.  */
#define POLLWRNORM	POLLOUT

/* 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         010             /* Error condition.  */
#define POLLHUP         020             /* Hung up.  */
#define POLLNVAL        040             /* Invalid polling request.  */

/* Canonical number of polling requests to read in at a time in poll.  */
#define NPOLLFILE	30
Commit	Line	Data
39e16978 UD	1	/* Copyright (C) 1997 Free Software Foundation, Inc.
	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or
	5	modify it under the terms of the GNU Library General Public License as
	6	published by the Free Software Foundation; either version 2 of the
	7	License, or (at your option) any later version.
	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	12	Library General Public License for more details.
	13
	14	You should have received a copy of the GNU Library General Public
	15	License along with the GNU C Library; see the file COPYING.LIB. If not,
	16	write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	17	Boston, MA 02111-1307, USA. */
	18
	19
	20	/* Event types that can be polled for. These bits may be set in `events'
	21	to indicate the interesting event types; they will appear in `revents'
	22	to indicate the status of the file descriptor. */
	23	#define POLLIN 01 /* There is data to read. */
	24	#define POLLPRI 02 /* There is urgent data to read. */
	25	#define POLLOUT 04 /* Writing now will not block. */
	26
	27	/* Some aliases. */
	28	#define POLLWRNORM POLLOUT
	29
	30	/* Event types always implicitly polled for. These bits need not be set in
	31	`events', but they will appear in `revents' to indicate the status of
	32	the file descriptor. */
	33	#define POLLERR 010 /* Error condition. */
	34	#define POLLHUP 020 /* Hung up. */
	35	#define POLLNVAL 040 /* Invalid polling request. */
	36
	37	/* Canonical number of polling requests to read in at a time in poll. */
	38	#define NPOLLFILE 30