1/* 2 * Copyright (c) 2000-2005 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#include <sys/_types.h> 63 64/* 65 * The time_t and suseconds_t types shall be defined as described in 66 * <sys/types.h> 67 * The sigset_t type shall be defined as described in <signal.h> 68 * The timespec structure shall be defined as described in <time.h> 69 */ 70#ifndef _TIME_T 71#define _TIME_T 72typedef __darwin_time_t time_t; 73#endif 74 75#ifndef _SUSECONDS_T 76#define _SUSECONDS_T 77typedef __darwin_suseconds_t suseconds_t; 78#endif 79 80#ifndef _SIGSET_T 81#define _SIGSET_T 82typedef __darwin_sigset_t sigset_t; 83#endif 84 85#ifndef _TIMESPEC 86#define _TIMESPEC 87struct timespec { 88 time_t tv_sec; 89 long tv_nsec; 90}; 91#endif 92 93/* 94 * [XSI] The <sys/select.h> header shall define the fd_set type as a structure. 95 * [XSI] FD_CLR, FD_ISSET, FD_SET, FD_ZERO may be declared as a function, or 96 * defined as a macro, or both 97 * [XSI] FD_SETSIZE shall be defined as a macro 98 * 99 * Note: We use _FD_SET to protect all select related 100 * types and macros 101 */ 102#ifndef _FD_SET 103#define _FD_SET 104 105/* 106 * Select uses bit masks of file descriptors in longs. These macros 107 * manipulate such bit fields (the filesystem macros use chars). The 108 * extra protection here is to permit application redefinition above 109 * the default size. 110 */ 111#ifndef FD_SETSIZE 112#define FD_SETSIZE 1024 113#endif 114 115#define __DARWIN_NBBY 8 /* bits in a byte */ 116#define __DARWIN_NFDBITS (sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */ 117#define __DARWIN_howmany(x, y) (((x) + ((y) - 1)) / (y)) /* # y's == x bits? */ 118 119typedef struct fd_set { 120 __int32_t fds_bits[__DARWIN_howmany(FD_SETSIZE, __DARWIN_NFDBITS)]; 121} fd_set; 122 123#define FD_SET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] |= (1<<((n) % __DARWIN_NFDBITS))) 124#define FD_CLR(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] &= ~(1<<((n) % __DARWIN_NFDBITS))) 125#define FD_ISSET(n, p) ((p)->fds_bits[(n)/__DARWIN_NFDBITS] & (1<<((n) % __DARWIN_NFDBITS))) 126#if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3 127/* 128 * Use the built-in bzero function instead of the library version so that 129 * we do not pollute the namespace or introduce prototype warnings. 130 */ 131#define FD_ZERO(p) __builtin_bzero(p, sizeof(*(p))) 132#else 133#define FD_ZERO(p) bzero(p, sizeof(*(p))) 134#endif 135#ifndef _POSIX_C_SOURCE 136#define FD_COPY(f, t) bcopy(f, t, sizeof(*(f))) 137#endif /* !_POSIX_C_SOURCE */ 138 139#endif /* !_FD_SET */ 140 141#ifdef KERNEL 142#ifdef KERNEL_PRIVATE 143#include <kern/wait_queue.h> 144#endif 145#include <sys/kernel_types.h> 146 147#include <sys/event.h> 148 149/* 150 * Used to maintain information about processes that wish to be 151 * notified when I/O becomes possible. 152 */ 153#ifdef KERNEL_PRIVATE 154struct selinfo { 155 struct wait_queue si_wait_queue; /* wait_queue for wait/wakeup */ 156 struct klist si_note; /* JMM - temporary separation */ 157 u_int si_flags; /* see below */ 158}; 159 160#define SI_COLL 0x0001 /* collision occurred */ 161#define SI_RECORDED 0x0004 /* select has been recorded */ 162#define SI_INITED 0x0008 /* selinfo has been inited */ 163#define SI_CLEAR 0x0010 /* selinfo has been cleared */ 164 165#else 166struct selinfo; 167#endif 168 169__BEGIN_DECLS 170 171void selrecord(proc_t selector, struct selinfo *, void *); 172void selwakeup(struct selinfo *); 173void selthreadclear(struct selinfo *); 174 175__END_DECLS 176 177#endif /* KERNEL */ 178 179 180#ifndef KERNEL 181#ifndef _POSIX_C_SOURCE 182#include <sys/types.h> 183#ifndef __MWERKS__ 184#include <signal.h> 185#endif /* __MWERKS__ */ 186#include <sys/time.h> 187#endif /* !_POSIX_C_SOURCE */ 188 189__BEGIN_DECLS 190#ifndef __MWERKS__ 191int pselect(int, fd_set * __restrict, fd_set * __restrict, 192 fd_set * __restrict, const struct timespec * __restrict, 193 const sigset_t * __restrict); 194#endif /* __MWERKS__ */ 195int select(int, fd_set * __restrict, fd_set * __restrict, 196 fd_set * __restrict, struct timeval * __restrict); 197__END_DECLS 198#endif /* ! KERNEL */ 199 200#endif /* !_SYS_SELECT_H_ */ 201