/* 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) TODO  to uncomment N COMMENT NEXT line

#  define HZ 100.0

# 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

	};

EXPORT_C 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;

	}

EXPORT_C void ms_time_free(MS_TM *a)

	{

	if (a != NULL)

		OPENSSL_free(a);

	}

EXPORT_C void ms_time_get(MS_TM *tm)

	{

#ifdef OPENSSL_SYS_WIN32

	FILETIME tmpa,tmpb,tmpc;

#endif

#ifdef TIMES

	//times(&tm->ms_tms);TODO  to uncomment

#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

	}

EXPORT_C 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);

	}

EXPORT_C 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);

	}