crypto/tmdiff.c

   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 /* Depending on the VMS version, the tms structure is perhaps defined.
  88    The __TMS macro will show if it was.  If it wasn't defined, we should
  89    undefine TIMES, since that tells the rest of the program how things
  90    should be handled.                           -- Richard Levitte */
  91 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__TMS)
  92 #undef TIMES
  93 #endif
  94
  95 #if defined(sun) || defined(__ultrix)
  96 #define _POSIX_SOURCE
  97 #include <limits.h>
  98 #include <sys/param.h>
  99 #endif
 100
 101 #if !defined(TIMES) && !defined(OPENSSL_SYS_VXWORKS) && !defined(OPENSSL_SYS_NETWARE)
 102 #include <sys/timeb.h>
 103 #endif
 104
 105 #ifdef OPENSSL_SYS_WIN32
 106 #include <windows.h>
 107 #endif
 108
 109 /* The following if from times(3) man page.  It may need to be changed */
 110 #ifndef HZ
 111 # if defined(_SC_CLK_TCK) \
 112      && (!defined(OPENSSL_SYS_VMS) || __CTRL_VER >= 70000000)
 113 /* #  define HZ ((double)sysconf(_SC_CLK_TCK)) */
 114 #  define HZ sysconf(_SC_CLK_TCK)
 115 # else
 116 #  ifndef CLK_TCK
 117 #   ifndef _BSD_CLK_TCK_ /* FreeBSD hack */
 118 #    define HZ  100.0
 119 #   else /* _BSD_CLK_TCK_ */
 120 #    define HZ ((double)_BSD_CLK_TCK_)
 121 #   endif
 122 #  else /* CLK_TCK */
 123 #   define HZ ((double)CLK_TCK)
 124 #  endif
 125 # endif
 126 #endif
 127
 128 struct ms_tm
 129         {
 130 #ifdef TIMES
 131         struct tms ms_tms;
 132 #else
 133 #  ifdef OPENSSL_SYS_WIN32
 134         HANDLE thread_id;
 135         FILETIME ms_win32;
 136 #  elif defined (OPENSSL_SYS_NETWARE)
 137    clock_t ms_clock;
 138 #  else
 139 #    ifdef OPENSSL_SYS_VXWORKS
 140           unsigned long ticks;
 141 #    else
 142         struct timeb ms_timeb;
 143 #    endif
 144 #  endif
 145 #endif
 146         };
 147
 148 MS_TM *ms_time_new(void)
 149         {
 150         MS_TM *ret;
 151
 152         ret=(MS_TM *)OPENSSL_malloc(sizeof(MS_TM));
 153         if (ret == NULL)
 154                 return(NULL);
 155         memset(ret,0,sizeof(MS_TM));
 156 #ifdef OPENSSL_SYS_WIN32
 157         ret->thread_id=GetCurrentThread();
 158 #endif
 159         return ret;
 160         }
 161
 162 void ms_time_free(MS_TM *a)
 163         {
 164         if (a != NULL)
 165                 OPENSSL_free(a);
 166         }
 167
 168 void ms_time_get(MS_TM *tm)
 169         {
 170 #ifdef OPENSSL_SYS_WIN32
 171         FILETIME tmpa,tmpb,tmpc;
 172 #endif
 173
 174 #ifdef TIMES
 175         times(&tm->ms_tms);
 176 #else
 177 #  ifdef OPENSSL_SYS_WIN32
 178         GetThreadTimes(tm->thread_id,&tmpa,&tmpb,&tmpc,&(tm->ms_win32));
 179 #  elif defined (OPENSSL_SYS_NETWARE)
 180    tm->ms_clock = clock();
 181 #  else
 182 #    ifdef OPENSSL_SYS_VXWORKS
 183         tm->ticks = tickGet();
 184 #    else
 185         ftime(&tm->ms_timeb);
 186 #    endif
 187 #  endif
 188 #endif
 189         }
 190
 191 double ms_time_diff(MS_TM *a, MS_TM *b)
 192         {
 193         double ret;
 194
 195 #ifdef TIMES
 196         ret = HZ;
 197         ret = (b->ms_tms.tms_utime-a->ms_tms.tms_utime) / ret;
 198 #else
 199 # ifdef OPENSSL_SYS_WIN32
 200         {
 201 #ifdef __GNUC__
 202         signed long long la,lb;
 203 #else
 204         signed _int64 la,lb;
 205 #endif
 206         la=a->ms_win32.dwHighDateTime;
 207         lb=b->ms_win32.dwHighDateTime;
 208         la<<=32;
 209         lb<<=32;
 210         la+=a->ms_win32.dwLowDateTime;
 211         lb+=b->ms_win32.dwLowDateTime;
 212         ret=((double)(lb-la))/1e7;
 213         }
 214 # elif defined (OPENSSL_SYS_NETWARE)
 215     ret= (double)(b->ms_clock - a->ms_clock);
 216 # else
 217 #  ifdef OPENSSL_SYS_VXWORKS
 218         ret = (double)(b->ticks - a->ticks) / (double)sysClkRateGet();
 219 #  else
 220         ret=     (double)(b->ms_timeb.time-a->ms_timeb.time)+
 221                 (((double)b->ms_timeb.millitm)-
 222                 ((double)a->ms_timeb.millitm))/1000.0;
 223 #  endif
 224 # endif
 225 #endif
 226         return((ret < 0.0000001)?0.0000001:ret);
 227         }
 228
 229 int ms_time_cmp(const MS_TM *a, const MS_TM *b)
 230         {
 231         double d;
 232         int ret;
 233
 234 #ifdef TIMES
 235         d = HZ;
 236         d = (b->ms_tms.tms_utime-a->ms_tms.tms_utime) / d;
 237 #else
 238 # ifdef OPENSSL_SYS_WIN32
 239         d =(b->ms_win32.dwHighDateTime&0x000fffff)*10+b->ms_win32.dwLowDateTime/1e7;
 240         d-=(a->ms_win32.dwHighDateTime&0x000fffff)*10+a->ms_win32.dwLowDateTime/1e7;
 241 # elif defined (OPENSSL_SYS_NETWARE)
 242     d= (double)(b->ms_clock - a->ms_clock);
 243 # else
 244 #  ifdef OPENSSL_SYS_VXWORKS
 245         d = (b->ticks - a->ticks);
 246 #  else
 247         d=       (double)(b->ms_timeb.time-a->ms_timeb.time)+
 248                 (((double)b->ms_timeb.millitm)-(double)a->ms_timeb.millitm)/1000.0;
 249 #  endif
 250 # endif
 251 #endif
 252         if (d == 0.0)
 253                 ret=0;
 254         else if (d < 0)
 255                 ret= -1;
 256         else
 257                 ret=1;
 258         return(ret);
 259         }
 260