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+/* crypto/tmdiff.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "cryptlib.h"
+#include <openssl/tmdiff.h>
+#if !defined(OPENSSL_SYS_MSDOS)
+#include OPENSSL_UNISTD
+#endif
+
+#ifdef TIMEB
+#undef OPENSSL_SYS_WIN32
+#undef TIMES
+#endif
+
+#if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN32) && !(defined(OPENSSL_SYS_VMS) || defined(__DECC)) && !defined(OPENSSL_SYS_MACOSX_RHAPSODY) && !defined(OPENSSL_SYS_VXWORKS)
+# define TIMES
+#endif
+
+#ifdef OPENSSL_SYS_NETWARE
+#undef TIMES
+#endif
+
+#if !defined(_IRIX) || defined (OPENSSL_SYS_NETWARE)
+# include <time.h>
+#endif
+#ifdef TIMES
+# include <sys/types.h>
+# include <sys/times.h>
+#endif
+
+/* Depending on the VMS version, the tms structure is perhaps defined.
+ The __TMS macro will show if it was. If it wasn't defined, we should
+ undefine TIMES, since that tells the rest of the program how things
+ should be handled. -- Richard Levitte */
+#if defined(OPENSSL_SYS_VMS_DECC) && !defined(__TMS)
+#undef TIMES
+#endif
+
+#if defined(sun) || defined(__ultrix)
+#define _POSIX_SOURCE
+#include <limits.h>
+#include <sys/param.h>
+#endif
+
+#if !defined(TIMES) && !defined(OPENSSL_SYS_VXWORKS) && !defined(OPENSSL_SYS_NETWARE)
+#include <sys/timeb.h>
+#endif
+
+#ifdef OPENSSL_SYS_WIN32
+#include <windows.h>
+#endif
+
+/* The following if from times(3) man page. It may need to be changed */
+#ifndef HZ
+# if defined(_SC_CLK_TCK) \
+ && (!defined(OPENSSL_SYS_VMS) || __CTRL_VER >= 70000000)
+/* # define HZ ((double)sysconf(_SC_CLK_TCK)) */
+# define HZ sysconf(_SC_CLK_TCK)
+# else
+# ifndef CLK_TCK
+# ifndef _BSD_CLK_TCK_ /* FreeBSD hack */
+# define HZ 100.0
+# else /* _BSD_CLK_TCK_ */
+# define HZ ((double)_BSD_CLK_TCK_)
+# endif
+# else /* CLK_TCK */
+# define HZ ((double)CLK_TCK)
+# endif
+# endif
+#endif
+
+struct ms_tm
+ {
+#ifdef TIMES
+ struct tms ms_tms;
+#else
+# ifdef OPENSSL_SYS_WIN32
+ HANDLE thread_id;
+ FILETIME ms_win32;
+# elif defined (OPENSSL_SYS_NETWARE)
+ clock_t ms_clock;
+# else
+# ifdef OPENSSL_SYS_VXWORKS
+ unsigned long ticks;
+# else
+ struct timeb ms_timeb;
+# endif
+# endif
+#endif
+ };
+
+MS_TM *ms_time_new(void)
+ {
+ MS_TM *ret;
+
+ ret=(MS_TM *)OPENSSL_malloc(sizeof(MS_TM));
+ if (ret == NULL)
+ return(NULL);
+ memset(ret,0,sizeof(MS_TM));
+#ifdef OPENSSL_SYS_WIN32
+ ret->thread_id=GetCurrentThread();
+#endif
+ return ret;
+ }
+
+void ms_time_free(MS_TM *a)
+ {
+ if (a != NULL)
+ OPENSSL_free(a);
+ }
+
+void ms_time_get(MS_TM *tm)
+ {
+#ifdef OPENSSL_SYS_WIN32
+ FILETIME tmpa,tmpb,tmpc;
+#endif
+
+#ifdef TIMES
+ times(&tm->ms_tms);
+#else
+# ifdef OPENSSL_SYS_WIN32
+ GetThreadTimes(tm->thread_id,&tmpa,&tmpb,&tmpc,&(tm->ms_win32));
+# elif defined (OPENSSL_SYS_NETWARE)
+ tm->ms_clock = clock();
+# else
+# ifdef OPENSSL_SYS_VXWORKS
+ tm->ticks = tickGet();
+# else
+ ftime(&tm->ms_timeb);
+# endif
+# endif
+#endif
+ }
+
+double ms_time_diff(MS_TM *a, MS_TM *b)
+ {
+ double ret;
+
+#ifdef TIMES
+ ret = HZ;
+ ret = (b->ms_tms.tms_utime-a->ms_tms.tms_utime) / ret;
+#else
+# ifdef OPENSSL_SYS_WIN32
+ {
+#ifdef __GNUC__
+ signed long long la,lb;
+#else
+ signed _int64 la,lb;
+#endif
+ la=a->ms_win32.dwHighDateTime;
+ lb=b->ms_win32.dwHighDateTime;
+ la<<=32;
+ lb<<=32;
+ la+=a->ms_win32.dwLowDateTime;
+ lb+=b->ms_win32.dwLowDateTime;
+ ret=((double)(lb-la))/1e7;
+ }
+# elif defined (OPENSSL_SYS_NETWARE)
+ ret= (double)(b->ms_clock - a->ms_clock);
+# else
+# ifdef OPENSSL_SYS_VXWORKS
+ ret = (double)(b->ticks - a->ticks) / (double)sysClkRateGet();
+# else
+ ret= (double)(b->ms_timeb.time-a->ms_timeb.time)+
+ (((double)b->ms_timeb.millitm)-
+ ((double)a->ms_timeb.millitm))/1000.0;
+# endif
+# endif
+#endif
+ return((ret < 0.0000001)?0.0000001:ret);
+ }
+
+int ms_time_cmp(const MS_TM *a, const MS_TM *b)
+ {
+ double d;
+ int ret;
+
+#ifdef TIMES
+ d = HZ;
+ d = (b->ms_tms.tms_utime-a->ms_tms.tms_utime) / d;
+#else
+# ifdef OPENSSL_SYS_WIN32
+ d =(b->ms_win32.dwHighDateTime&0x000fffff)*10+b->ms_win32.dwLowDateTime/1e7;
+ d-=(a->ms_win32.dwHighDateTime&0x000fffff)*10+a->ms_win32.dwLowDateTime/1e7;
+# elif defined (OPENSSL_SYS_NETWARE)
+ d= (double)(b->ms_clock - a->ms_clock);
+# else
+# ifdef OPENSSL_SYS_VXWORKS
+ d = (b->ticks - a->ticks);
+# else
+ d= (double)(b->ms_timeb.time-a->ms_timeb.time)+
+ (((double)b->ms_timeb.millitm)-(double)a->ms_timeb.millitm)/1000.0;
+# endif
+# endif
+#endif
+ if (d == 0.0)
+ ret=0;
+ else if (d < 0)
+ ret= -1;
+ else
+ ret=1;
+ return(ret);
+ }
+