[apple/xnu.git] / bsd / sys / select.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)select.h	8.2 (Berkeley) 1/4/94
 */

#ifndef _SYS_SELECT_H_
#define	_SYS_SELECT_H_

#include <sys/appleapiopts.h>

#ifdef __APPLE_API_UNSTABLE

__BEGIN_DECLS

#ifdef KERNEL
#include <kern/wait_queue.h>
#endif

/*
 * Used to maintain information about processes that wish to be
 * notified when I/O becomes possible.
 */
struct selinfo {
#ifdef KERNEL
	struct  wait_queue  wait_queue;	 /* wait_queue for wait/wakeup */
#else
	char  wait_queue[16];
#endif
	u_int	si_flags;	/* see below */
};

#define	SI_COLL		0x0001		/* collision occurred */
#define	SI_RECORDED	0x0004		/* select has been recorded */ 
#define	SI_INITED	0x0008		/* selinfo has been inited */ 
#define	SI_CLEAR	0x0010		/* selinfo has been cleared */ 

#ifdef KERNEL
struct proc;

void	selrecord __P((struct proc *selector, struct selinfo *, void *));
void	selwakeup __P((struct selinfo *));
void	selthreadclear __P((struct selinfo *));
#endif /* KERNEL */

__END_DECLS

#endif /* __APPLE_API_UNSTABLE */

#endif /* !_SYS_SELECT_H_ */
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
d7e50217	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
1c79356b	7	*
d7e50217 A	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
d7e50217 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
1c79356b A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1992, 1993
	27	* The Regents of the University of California. All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	* 1. Redistributions of source code must retain the above copyright
	33	* notice, this list of conditions and the following disclaimer.
	34	* 2. Redistributions in binary form must reproduce the above copyright
	35	* notice, this list of conditions and the following disclaimer in the
	36	* documentation and/or other materials provided with the distribution.
	37	* 3. All advertising materials mentioning features or use of this software
	38	* must display the following acknowledgement:
	39	* This product includes software developed by the University of
	40	* California, Berkeley and its contributors.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*
	57	* @(#)select.h 8.2 (Berkeley) 1/4/94
	58	*/
	59
	60	#ifndef _SYS_SELECT_H_
	61	#define _SYS_SELECT_H_
	62
9bccf70c A	63	#include <sys/appleapiopts.h>
	64
	65	#ifdef __APPLE_API_UNSTABLE
	66
0b4e3aa0	67	__BEGIN_DECLS
9bccf70c A	68
9bccf70c A	69	#ifdef KERNEL
0b4e3aa0	70	#include <kern/wait_queue.h>
0b4e3aa0 A	71	#endif
0b4e3aa0 A	72
1c79356b A	73	/*
	74	* Used to maintain information about processes that wish to be
	75	* notified when I/O becomes possible.
	76	*/
	77	struct selinfo {
0b4e3aa0 A	78	#ifdef KERNEL
	79	struct wait_queue wait_queue; /* wait_queue for wait/wakeup */
	80	#else
	81	char wait_queue[16];
	82	#endif
	83	u_int si_flags; /* see below */
1c79356b	84	};
0b4e3aa0	85
e3027f41	86	#define SI_COLL 0x0001 /* collision occurred */
0b4e3aa0 A	87	#define SI_RECORDED 0x0004 /* select has been recorded */
	88	#define SI_INITED 0x0008 /* selinfo has been inited */
	89	#define SI_CLEAR 0x0010 /* selinfo has been cleared */
1c79356b A	90
	91	#ifdef KERNEL
	92	struct proc;
	93
0b4e3aa0	94	void selrecord __P((struct proc selector, struct selinfo , void *));
1c79356b A	95	void selwakeup __P((struct selinfo *));
1c79356b A	96	void selthreadclear __P((struct selinfo *));
9bccf70c A	97	#endif /* KERNEL */
	98
	99	__END_DECLS
	100
	101	#endif /* __APPLE_API_UNSTABLE */
1c79356b A	102
1c79356b A	103	#endif /* !_SYS_SELECT_H_ */