bsd/sys/select.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   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
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  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.
  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
  63 #include <sys/appleapiopts.h>
  64
  65 #ifdef __APPLE_API_UNSTABLE
  66
  67 __BEGIN_DECLS
  68
  69 #ifdef KERNEL
  70 #include <kern/wait_queue.h>
  71 #endif
  72
  73 /*
  74  * Used to maintain information about processes that wish to be
  75  * notified when I/O becomes possible.
  76  */
  77 struct selinfo {
  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 */
  84 };
  85
  86 #define SI_COLL         0x0001          /* collision occurred */
  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 */
  90
  91 #ifdef KERNEL
  92 struct proc;
  93
  94 void    selrecord __P((struct proc *selector, struct selinfo *, void *));
  95 void    selwakeup __P((struct selinfo *));
  96 void    selthreadclear __P((struct selinfo *));
  97 #endif /* KERNEL */
  98
  99 __END_DECLS
 100
 101 #endif /* __APPLE_API_UNSTABLE */
 102
 103 #endif /* !_SYS_SELECT_H_ */