| 1 | /*␊ |
| 2 | * Copyright (c) 2004-2006 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 | #include <sys/cdefs.h>␊ |
| 30 | #include <sys/_types.h>␊ |
| 31 | ␊ |
| 32 | #ifdef __need_struct_timespec␊ |
| 33 | #undef __need_struct_timespec␊ |
| 34 | #ifndef _STRUCT_TIMESPEC␊ |
| 35 | #define _STRUCT_TIMESPEC␉struct timespec␊ |
| 36 | _STRUCT_TIMESPEC␊ |
| 37 | {␊ |
| 38 | ␉__darwin_time_t␉tv_sec;␊ |
| 39 | ␉long␉␉tv_nsec;␊ |
| 40 | };␊ |
| 41 | #endif /* _STRUCT_TIMESPEC */␊ |
| 42 | #endif /* __need_struct_timespec */␊ |
| 43 | ␊ |
| 44 | #ifdef __need_struct_timeval␊ |
| 45 | #undef __need_struct_timeval␊ |
| 46 | #ifndef _STRUCT_TIMEVAL␊ |
| 47 | #define _STRUCT_TIMEVAL␉␉struct timeval␊ |
| 48 | _STRUCT_TIMEVAL␊ |
| 49 | {␊ |
| 50 | ␉__darwin_time_t␉␉tv_sec;␉␉/* seconds */␊ |
| 51 | ␉__darwin_suseconds_t␉tv_usec;␉/* and microseconds */␊ |
| 52 | };␊ |
| 53 | #endif /* _STRUCT_TIMEVAL */␊ |
| 54 | #endif /* __need_struct_timeval */␊ |
| 55 | ␊ |
| 56 | #ifdef __need_struct_timeval32␊ |
| 57 | #undef __need_struct_timeval32␊ |
| 58 | #ifndef _STRUCT_TIMEVAL32␊ |
| 59 | #define _STRUCT_TIMEVAL32␉struct timeval32␊ |
| 60 | _STRUCT_TIMEVAL32␊ |
| 61 | {␊ |
| 62 | ␉__int32_t␉␉tv_sec;␉␉/* seconds */␊ |
| 63 | ␉__int32_t␉␉tv_usec;␉/* and microseconds */␊ |
| 64 | };␊ |
| 65 | #endif /* _STRUCT_TIMEVAL32 */␊ |
| 66 | #endif /* __need_struct_timeval32 */␊ |
| 67 | ␊ |
| 68 | ␊ |
| 69 | #ifdef __need_fd_set␊ |
| 70 | #undef __need_fd_set␊ |
| 71 | #ifndef _FD_SET␊ |
| 72 | #define _FD_SET␊ |
| 73 | /*␊ |
| 74 | * Select uses bit masks of file descriptors in longs. These macros␊ |
| 75 | * manipulate such bit fields (the filesystem macros use chars). The␊ |
| 76 | * extra protection here is to permit application redefinition above␊ |
| 77 | * the default size.␊ |
| 78 | */␊ |
| 79 | #ifdef FD_SETSIZE␊ |
| 80 | #define␉__DARWIN_FD_SETSIZE␉FD_SETSIZE␊ |
| 81 | #else /* !FD_SETSIZE */␊ |
| 82 | #define␉__DARWIN_FD_SETSIZE␉1024␊ |
| 83 | #endif /* FD_SETSIZE */␊ |
| 84 | #define␉__DARWIN_NBBY␉␉8␉␉␉␉/* bits in a byte */␊ |
| 85 | #define __DARWIN_NFDBITS␉(sizeof(__int32_t) * __DARWIN_NBBY) /* bits per mask */␊ |
| 86 | #define␉__DARWIN_howmany(x, y)␉((((x) % (y)) == 0) ? ((x) / (y)) : (((x) / (y)) + 1)) /* # y's == x bits? */␊ |
| 87 | ␊ |
| 88 | __BEGIN_DECLS␊ |
| 89 | typedef␉struct fd_set {␊ |
| 90 | ␉__int32_t␉fds_bits[__DARWIN_howmany(__DARWIN_FD_SETSIZE, __DARWIN_NFDBITS)];␊ |
| 91 | } fd_set;␊ |
| 92 | __END_DECLS␊ |
| 93 | ␊ |
| 94 | /* This inline avoids argument side-effect issues with FD_ISSET() */␊ |
| 95 | static __inline int␊ |
| 96 | __darwin_fd_isset(int _n, const struct fd_set *_p)␊ |
| 97 | {␊ |
| 98 | ␉return (_p->fds_bits[_n/__DARWIN_NFDBITS] & (1<<(_n % __DARWIN_NFDBITS)));␊ |
| 99 | }␊ |
| 100 | ␊ |
| 101 | #define␉__DARWIN_FD_SET(n, p)␉do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] |= (1<<(__fd % __DARWIN_NFDBITS))); } while(0)␊ |
| 102 | #define␉__DARWIN_FD_CLR(n, p)␉do { int __fd = (n); ((p)->fds_bits[__fd/__DARWIN_NFDBITS] &= ~(1<<(__fd % __DARWIN_NFDBITS))); } while(0)␊ |
| 103 | #define␉__DARWIN_FD_ISSET(n, p)␉__darwin_fd_isset((n), (p))␊ |
| 104 | ␊ |
| 105 | #if __GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ >= 3␊ |
| 106 | /*␊ |
| 107 | * Use the built-in bzero function instead of the library version so that␊ |
| 108 | * we do not pollute the namespace or introduce prototype warnings.␊ |
| 109 | */␊ |
| 110 | #define␉__DARWIN_FD_ZERO(p)␉__builtin_bzero(p, sizeof(*(p)))␊ |
| 111 | #else␊ |
| 112 | #define␉__DARWIN_FD_ZERO(p)␉bzero(p, sizeof(*(p)))␊ |
| 113 | #endif␊ |
| 114 | ␊ |
| 115 | #define␉__DARWIN_FD_COPY(f, t)␉bcopy(f, t, sizeof(*(f)))␊ |
| 116 | #endif /* _FD_SET */␊ |
| 117 | #endif /* __need_fd_set */␊ |
| 118 | |
