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1: /* 2: * Copyright (c) 2000-2006 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: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ 29: /* 30: * Copyright (c) 1982, 1986, 1993 31: * The Regents of the University of California. All rights reserved. 32: * 33: * Redistribution and use in source and binary forms, with or without 34: * modification, are permitted provided that the following conditions 35: * are met: 36: * 1. Redistributions of source code must retain the above copyright 37: * notice, this list of conditions and the following disclaimer. 38: * 2. Redistributions in binary form must reproduce the above copyright 39: * notice, this list of conditions and the following disclaimer in the 40: * documentation and/or other materials provided with the distribution. 41: * 3. All advertising materials mentioning features or use of this software 42: * must display the following acknowledgement: 43: * This product includes software developed by the University of 44: * California, Berkeley and its contributors. 45: * 4. Neither the name of the University nor the names of its contributors 46: * may be used to endorse or promote products derived from this software 47: * without specific prior written permission. 48: * 49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59: * SUCH DAMAGE. 60: * 61: * @(#)time.h 8.2 (Berkeley) 7/10/94 62: */ 63: 64: #ifndef _SYS_TIME_H_ 65: #define _SYS_TIME_H_ 66: 67: #include <sys/cdefs.h> 68: #include <sys/_types.h> 69: #include <Availability.h> 70: 71: /* 72: * [XSI] The fd_set type shall be defined as described in <sys/select.h>. 73: * The timespec structure shall be defined as described in <time.h> 74: */ 75: #include <sys/_types/_fd_def.h> 76: #include <sys/_types/_timespec.h> 77: #include <sys/_types/_timeval.h> 78: 79: #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 80: #include <sys/_types/_timeval64.h> 81: #endif /* !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) */ 82: 83: 84: #include <sys/_types/_time_t.h> 85: #include <sys/_types/_suseconds_t.h> 86: 87: /* 88: * Structure used as a parameter by getitimer(2) and setitimer(2) system 89: * calls. 90: */ 91: struct itimerval { 92: struct timeval it_interval; /* timer interval */ 93: struct timeval it_value; /* current value */ 94: }; 95: 96: /* 97: * Names of the interval timers, and structure 98: * defining a timer setting. 99: */ 100: #define ITIMER_REAL 0 101: #define ITIMER_VIRTUAL 1 102: #define ITIMER_PROF 2 103: 104: /* 105: * Select uses bit masks of file descriptors in longs. These macros 106: * manipulate such bit fields (the filesystem macros use chars). The 107: * extra protection here is to permit application redefinition above 108: * the default size. 109: */ 110: #include <sys/_types/_fd_setsize.h> 111: #include <sys/_types/_fd_set.h> 112: #include <sys/_types/_fd_clr.h> 113: #include <sys/_types/_fd_isset.h> 114: #include <sys/_types/_fd_zero.h> 115: 116: #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 117: 118: #include <sys/_types/_fd_copy.h> 119: 120: #define TIMEVAL_TO_TIMESPEC(tv, ts) { \ 121: (ts)->tv_sec = (tv)->tv_sec; \ 122: (ts)->tv_nsec = (tv)->tv_usec * 1000; \ 123: } 124: #define TIMESPEC_TO_TIMEVAL(tv, ts) { \ 125: (tv)->tv_sec = (ts)->tv_sec; \ 126: (tv)->tv_usec = (ts)->tv_nsec / 1000; \ 127: } 128: 129: struct timezone { 130: int tz_minuteswest; /* minutes west of Greenwich */ 131: int tz_dsttime; /* type of dst correction */ 132: }; 133: #define DST_NONE 0 /* not on dst */ 134: #define DST_USA 1 /* USA style dst */ 135: #define DST_AUST 2 /* Australian style dst */ 136: #define DST_WET 3 /* Western European dst */ 137: #define DST_MET 4 /* Middle European dst */ 138: #define DST_EET 5 /* Eastern European dst */ 139: #define DST_CAN 6 /* Canada */ 140: 141: /* Operations on timevals. */ 142: #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0 143: #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec) 144: #define timercmp(tvp, uvp, cmp) \ 145: (((tvp)->tv_sec == (uvp)->tv_sec) ? \ 146: ((tvp)->tv_usec cmp (uvp)->tv_usec) : \ 147: ((tvp)->tv_sec cmp (uvp)->tv_sec)) 148: #define timeradd(tvp, uvp, vvp) \ 149: do { \ 150: (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \ 151: (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \ 152: if ((vvp)->tv_usec >= 1000000) { \ 153: (vvp)->tv_sec++; \ 154: (vvp)->tv_usec -= 1000000; \ 155: } \ 156: } while (0) 157: #define timersub(tvp, uvp, vvp) \ 158: do { \ 159: (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 160: (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 161: if ((vvp)->tv_usec < 0) { \ 162: (vvp)->tv_sec--; \ 163: (vvp)->tv_usec += 1000000; \ 164: } \ 165: } while (0) 166: 167: #define timevalcmp(l, r, cmp) timercmp(l, r, cmp) /* freebsd */ 168: 169: /* 170: * Getkerninfo clock information structure 171: */ 172: struct clockinfo { 173: int hz; /* clock frequency */ 174: int tick; /* micro-seconds per hz tick */ 175: int tickadj; /* clock skew rate for adjtime() */ 176: int stathz; /* statistics clock frequency */ 177: int profhz; /* profiling clock frequency */ 178: }; 179: #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 180: 181: 182: #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 183: #include <time.h> 184: #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 185: 186: __BEGIN_DECLS 187: 188: #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 189: int adjtime(const struct timeval *, struct timeval *); 190: int futimes(int, const struct timeval *); 191: int lutimes(const char *, const struct timeval *) __OSX_AVAILABLE_STARTING(__MAC_10_5, __IPHONE_2_0); 192: int settimeofday(const struct timeval *, const struct timezone *); 193: #endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */ 194: 195: int getitimer(int, struct itimerval *); 196: int gettimeofday(struct timeval * __restrict, void * __restrict); 197: 198: #include <sys/_select.h> /* select() prototype */ 199: 200: int setitimer(int, const struct itimerval * __restrict, 201: struct itimerval * __restrict); 202: int utimes(const char *, const struct timeval *); 203: 204: __END_DECLS 205: 206: 207: #endif /* !_SYS_TIME_H_ */ 208: