1  /*
  2   * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
  3   *
  4   * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  5   *
  6   * This file contains Original Code and/or Modifications of Original Code
  7   * as defined in and that are subject to the Apple Public Source License
  8   * Version 2.0 (the 'License'). You may not use this file except in
  9   * compliance with the License. The rights granted to you under the License
 10   * may not be used to create, or enable the creation or redistribution of,
 11   * unlawful or unlicensed copies of an Apple operating system, or to
 12   * circumvent, violate, or enable the circumvention or violation of, any
 13   * terms of an Apple operating system software license agreement.
 14   *
 15   * Please obtain a copy of the License at
 16   * http://www.opensource.apple.com/apsl/ and read it before using this file.
 17   *
 18   * The Original Code and all software distributed under the License are
 19   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 20   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 21   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 22   * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 23   * Please see the License for the specific language governing rights and
 24   * limitations under the License.
 25   *
 26   * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 27   */
 28  /*
 29   * Copyright (c) 1992, 1993
 30   *	The Regents of the University of California.  All rights reserved.
 31   *
 32   * Redistribution and use in source and binary forms, with or without
 33   * modification, are permitted provided that the following conditions
 34   * are met:
 35   * 1. Redistributions of source code must retain the above copyright
 36   *    notice, this list of conditions and the following disclaimer.
 37   * 2. Redistributions in binary form must reproduce the above copyright
 38   *    notice, this list of conditions and the following disclaimer in the
 39   *    documentation and/or other materials provided with the distribution.
 40   * 3. All advertising materials mentioning features or use of this software
 41   *    must display the following acknowledgement:
 42   *	This product includes software developed by the University of
 43   *	California, Berkeley and its contributors.
 44   * 4. Neither the name of the University nor the names of its contributors
 45   *    may be used to endorse or promote products derived from this software
 46   *    without specific prior written permission.
 47   *
 48   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 49   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 50   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 51   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 52   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 53   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 54   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 55   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 56   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 57   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 58   * SUCH DAMAGE.
 59   *
 60   *	@(#)select.h	8.2 (Berkeley) 1/4/94
 61   */
 62  
 63  #ifndef _SYS_SELECT_H_
 64  #define _SYS_SELECT_H_
 65  
 66  #include <sys/appleapiopts.h>
 67  #include <sys/cdefs.h>
 68  #include <sys/_types.h>
 69  
 70  /*
 71   * [XSI] The <sys/select.h> header shall define the fd_set type as a structure.
 72   * The timespec structure shall be defined as described in <time.h>
 73   * The <sys/select.h> header shall define the timeval structure.
 74   */
 75  #include <sys/_types/_fd_def.h>
 76  #include <sys/_types/_timespec.h>
 77  #include <sys/_types/_timeval.h>
 78  
 79  /*
 80   * The time_t and suseconds_t types shall be defined as described in
 81   * <sys/types.h>
 82   * The sigset_t type shall be defined as described in <signal.h>
 83   */
 84  #include <sys/_types/_time_t.h>
 85  #include <sys/_types/_suseconds_t.h>
 86  #include <sys/_types/_sigset_t.h>
 87  
 88  /*
 89   * [XSI] FD_CLR, FD_ISSET, FD_SET, FD_ZERO may be declared as a function, or
 90   *	 defined as a macro, or both
 91   * [XSI] FD_SETSIZE shall be defined as a macro
 92   */
 93  
 94  /*
 95   * Select uses bit masks of file descriptors in longs.  These macros
 96   * manipulate such bit fields (the filesystem macros use chars).  The
 97   * extra protection here is to permit application redefinition above
 98   * the default size.
 99   */
100  #include <sys/_types/_fd_setsize.h>
101  #include <sys/_types/_fd_set.h>
102  #include <sys/_types/_fd_clr.h>
103  #include <sys/_types/_fd_isset.h>
104  #include <sys/_types/_fd_zero.h>
105  
106  #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
107  #include <sys/_types/_fd_copy.h>
108  #endif  /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
109  
110  #ifdef KERNEL
111  #include <sys/kernel_types.h>
112  #include <kern/waitq.h>
113  #include <sys/event.h>
114  
115  /*
116   * Used to maintain information about processes that wish to be
117   * notified when I/O becomes possible.
118   */
119  #ifdef KERNEL_PRIVATE
120  struct selinfo {
121  	struct  waitq si_waitq;         /* waitq for wait/wakeup */
122  	struct  klist si_note;          /* JMM - temporary separation */
123  	u_int   si_flags;               /* see below */
124  };
125  
126  #define SI_COLL         0x0001          /* collision occurred */
127  #define SI_RECORDED     0x0004          /* select has been recorded */
128  #define SI_INITED       0x0008          /* selinfo has been inited */
129  #define SI_CLEAR        0x0010          /* selinfo has been cleared */
130  #define SI_KNPOSTING    0x0020          /* posting to knotes */
131  
132  #else
133  struct selinfo;
134  #endif
135  
136  __BEGIN_DECLS
137  
138  extern int selwait;
139  void    selrecord(proc_t selector, struct selinfo *, void *);
140  void    selwakeup(struct selinfo *);
141  void    selthreadclear(struct selinfo *);
142  #if XNU_KERNEL_PRIVATE
143  struct _select;
144  void    select_cleanup_uthread(struct _select *);
145  #endif
146  
147  __END_DECLS
148  
149  #else /* !KERNEL */
150  
151  __BEGIN_DECLS
152  
153  #ifndef  __MWERKS__
154  int      pselect(int, fd_set * __restrict, fd_set * __restrict,
155      fd_set * __restrict, const struct timespec * __restrict,
156      const sigset_t * __restrict)
157  #if defined(_DARWIN_C_SOURCE) || defined(_DARWIN_UNLIMITED_SELECT)
158  __DARWIN_EXTSN_C(pselect)
159  #else /* !_DARWIN_C_SOURCE && !_DARWIN_UNLIMITED_SELECT */
160  #  if defined(__LP64__) && !__DARWIN_NON_CANCELABLE
161  __DARWIN_1050(pselect)
162  #  else /* !__LP64__ || __DARWIN_NON_CANCELABLE */
163  __DARWIN_ALIAS_C(pselect)
164  #  endif /* __LP64__ && !__DARWIN_NON_CANCELABLE */
165  #endif /* _DARWIN_C_SOURCE || _DARWIN_UNLIMITED_SELECT */
166  ;
167  #endif /* __MWERKS__ */
168  
169  #include <sys/_select.h>        /* select() prototype */
170  
171  __END_DECLS
172  
173  #endif /* ! KERNEL */
174  
175  #endif /* !_SYS_SELECT_H_ */