bsd/sys/select.h

   1 /*
   2  * Copyright (c) 2000-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1992, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  *
  54  *      @(#)select.h    8.2 (Berkeley) 1/4/94
  55  */
  56
  57 #ifndef _SYS_SELECT_H_
  58 #define _SYS_SELECT_H_
  59
  60 #include <sys/appleapiopts.h>
  61 #include <sys/cdefs.h>
  62
  63 #ifdef __APPLE_API_UNSTABLE
  64
  65 __BEGIN_DECLS
  66
  67 #ifdef KERNEL
  68 #include <kern/wait_queue.h>
  69 #endif
  70
  71 #include <sys/event.h>
  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         union {
  80                 struct  wait_queue wait_queue;  /* wait_queue for wait/wakeup */
  81                 struct klist note;              /* JMM - temporary separation */
  82         } si_u;
  83 #define si_wait_queue si_u.wait_queue
  84 #define si_note si_u.note
  85 #else
  86         char  si_wait_queue[16];
  87 #endif
  88         u_int   si_flags;               /* see below */
  89 };
  90
  91 #define SI_COLL         0x0001          /* collision occurred */
  92 #define SI_RECORDED     0x0004          /* select has been recorded */
  93 #define SI_INITED       0x0008          /* selinfo has been inited */
  94 #define SI_CLEAR        0x0010          /* selinfo has been cleared */
  95
  96 #ifdef KERNEL
  97 struct proc;
  98
  99 void    selrecord __P((struct proc *selector, struct selinfo *, void *));
 100 void    selwakeup __P((struct selinfo *));
 101 void    selthreadclear __P((struct selinfo *));
 102 #endif /* KERNEL */
 103
 104 __END_DECLS
 105
 106 #endif /* __APPLE_API_UNSTABLE */
 107
 108 #ifndef KERNEL
 109 #include <sys/types.h>
 110 #ifndef  __MWERKS__
 111 #include <signal.h>
 112 #endif /* __MWERKS__ */
 113 #include <sys/time.h>
 114
 115 __BEGIN_DECLS
 116 #ifndef  __MWERKS__
 117 int      pselect(int, fd_set *, fd_set *, fd_set *,
 118             const struct timespec *, const sigset_t *);
 119 #endif /* __MWERKS__ */
 120 int      select(int, fd_set *, fd_set *, fd_set *, struct timeval *);
 121 __END_DECLS
 122 #endif /* ! KERNEL */
 123
 124 #endif /* !_SYS_SELECT_H_ */