tmdiff.c revision 296465
1/* crypto/tmdiff.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58#include <stdio.h> 59#include <stdlib.h> 60#include "cryptlib.h" 61#include <openssl/tmdiff.h> 62#if !defined(OPENSSL_SYS_MSDOS) 63# include OPENSSL_UNISTD 64#endif 65 66#ifdef TIMEB 67# undef OPENSSL_SYS_WIN32 68# undef TIMES 69#endif 70 71#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32) && !(defined(OPENSSL_SYS_VMS) || defined(__DECC)) && !defined(OPENSSL_SYS_MACOSX_RHAPSODY) && !defined(OPENSSL_SYS_VXWORKS) 72# define TIMES 73#endif 74 75#ifdef OPENSSL_SYS_NETWARE 76# undef TIMES 77#endif 78 79#if !defined(_IRIX) || defined (OPENSSL_SYS_NETWARE) 80# include <time.h> 81#endif 82#ifdef TIMES 83# include <sys/types.h> 84# include <sys/times.h> 85#endif 86 87/* 88 * Depending on the VMS version, the tms structure is perhaps defined. The 89 * __TMS macro will show if it was. If it wasn't defined, we should undefine 90 * TIMES, since that tells the rest of the program how things should be 91 * handled. -- Richard Levitte 92 */ 93#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__TMS) 94# undef TIMES 95#endif 96 97#if defined(sun) || defined(__ultrix) 98# define _POSIX_SOURCE 99# include <limits.h> 100# include <sys/param.h> 101#endif 102 103#if !defined(TIMES) && !defined(OPENSSL_SYS_VXWORKS) && !defined(OPENSSL_SYS_NETWARE) 104# include <sys/timeb.h> 105#endif 106 107#ifdef OPENSSL_SYS_WIN32 108# include <windows.h> 109#endif 110 111/* The following if from times(3) man page. It may need to be changed */ 112#ifndef HZ 113# if defined(_SC_CLK_TCK) \ 114 && (!defined(OPENSSL_SYS_VMS) || __CTRL_VER >= 70000000) 115/* # define HZ ((double)sysconf(_SC_CLK_TCK)) */ 116# define HZ sysconf(_SC_CLK_TCK) 117# else 118# ifndef CLK_TCK 119# ifndef _BSD_CLK_TCK_ /* FreeBSD hack */ 120# define HZ 100.0 121# else /* _BSD_CLK_TCK_ */ 122# define HZ ((double)_BSD_CLK_TCK_) 123# endif 124# else /* CLK_TCK */ 125# define HZ ((double)CLK_TCK) 126# endif 127# endif 128#endif 129 130struct ms_tm { 131#ifdef TIMES 132 struct tms ms_tms; 133#else 134# ifdef OPENSSL_SYS_WIN32 135 HANDLE thread_id; 136 FILETIME ms_win32; 137# elif defined (OPENSSL_SYS_NETWARE) 138 clock_t ms_clock; 139# else 140# ifdef OPENSSL_SYS_VXWORKS 141 unsigned long ticks; 142# else 143 struct timeb ms_timeb; 144# endif 145# endif 146#endif 147}; 148 149MS_TM *ms_time_new(void) 150{ 151 MS_TM *ret; 152 153 ret = (MS_TM *) OPENSSL_malloc(sizeof(MS_TM)); 154 if (ret == NULL) 155 return (NULL); 156 memset(ret, 0, sizeof(MS_TM)); 157#ifdef OPENSSL_SYS_WIN32 158 ret->thread_id = GetCurrentThread(); 159#endif 160 return ret; 161} 162 163void ms_time_free(MS_TM * a) 164{ 165 if (a != NULL) 166 OPENSSL_free(a); 167} 168 169void ms_time_get(MS_TM * tm) 170{ 171#ifdef OPENSSL_SYS_WIN32 172 FILETIME tmpa, tmpb, tmpc; 173#endif 174 175#ifdef TIMES 176 times(&tm->ms_tms); 177#else 178# ifdef OPENSSL_SYS_WIN32 179 GetThreadTimes(tm->thread_id, &tmpa, &tmpb, &tmpc, &(tm->ms_win32)); 180# elif defined (OPENSSL_SYS_NETWARE) 181 tm->ms_clock = clock(); 182# else 183# ifdef OPENSSL_SYS_VXWORKS 184 tm->ticks = tickGet(); 185# else 186 ftime(&tm->ms_timeb); 187# endif 188# endif 189#endif 190} 191 192double ms_time_diff(MS_TM * a, MS_TM * b) 193{ 194 double ret; 195 196#ifdef TIMES 197 ret = HZ; 198 ret = (b->ms_tms.tms_utime - a->ms_tms.tms_utime) / ret; 199#else 200# ifdef OPENSSL_SYS_WIN32 201 { 202# ifdef __GNUC__ 203 signed long long la, lb; 204# else 205 signed _int64 la, lb; 206# endif 207 la = a->ms_win32.dwHighDateTime; 208 lb = b->ms_win32.dwHighDateTime; 209 la <<= 32; 210 lb <<= 32; 211 la += a->ms_win32.dwLowDateTime; 212 lb += b->ms_win32.dwLowDateTime; 213 ret = ((double)(lb - la)) / 1e7; 214 } 215# elif defined (OPENSSL_SYS_NETWARE) 216 ret = (double)(b->ms_clock - a->ms_clock); 217# else 218# ifdef OPENSSL_SYS_VXWORKS 219 ret = (double)(b->ticks - a->ticks) / (double)sysClkRateGet(); 220# else 221 ret = (double)(b->ms_timeb.time - a->ms_timeb.time) + 222 (((double)b->ms_timeb.millitm) - 223 ((double)a->ms_timeb.millitm)) / 1000.0; 224# endif 225# endif 226#endif 227 return ((ret < 0.0000001) ? 0.0000001 : ret); 228} 229 230int ms_time_cmp(const MS_TM * a, const MS_TM * b) 231{ 232 double d; 233 int ret; 234 235#ifdef TIMES 236 d = HZ; 237 d = (b->ms_tms.tms_utime - a->ms_tms.tms_utime) / d; 238#else 239# ifdef OPENSSL_SYS_WIN32 240 d = (b->ms_win32.dwHighDateTime & 0x000fffff) * 10 + 241 b->ms_win32.dwLowDateTime / 1e7; 242 d -= (a->ms_win32.dwHighDateTime & 0x000fffff) * 10 + 243 a->ms_win32.dwLowDateTime / 1e7; 244# elif defined (OPENSSL_SYS_NETWARE) 245 d = (double)(b->ms_clock - a->ms_clock); 246# else 247# ifdef OPENSSL_SYS_VXWORKS 248 d = (b->ticks - a->ticks); 249# else 250 d = (double)(b->ms_timeb.time - a->ms_timeb.time) + 251 (((double)b->ms_timeb.millitm) - 252 (double)a->ms_timeb.millitm) / 1000.0; 253# endif 254# endif 255#endif 256 if (d == 0.0) 257 ret = 0; 258 else if (d < 0) 259 ret = -1; 260 else 261 ret = 1; 262 return (ret); 263} 264