/*! ========================================================================
** Extended Template and Library
** Proc Clock Description Implementation
** $Id$
**
** Copyright (c) 2002 Robert B. Quattlebaum Jr.
**
** This package is free software; you can redistribute it and/or
** modify it under the terms of the GNU General Public License as
** published by the Free Software Foundation; either version 2 of
** the License, or (at your option) any later version.
**
** This package is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
** General Public License for more details.
**
** === N O T E S ===========================================================
**
** This is an internal header file, included by other ETL headers.
** You should not attempt to use it directly.
**
** ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __ETL__CLOCK_SYSTEM_H
#define __ETL__CLOCK_SYSTEM_H
/* === H E A D E R S ======================================================= */
#ifndef _WIN32
# include <time.h>
# define __sys_clock ::clock
# define __sys_time ::time
#else
# ifdef __GNUG__
# include <time.h>
# define __sys_clock ::clock
# define __sys_time ::time
# else
typedef int clock_t;
typedef int time_t;
extern clock_t _clock();
extern time_t _time(time_t *);
# define CLOCKS_PER_SEC 1000
# define __sys_clock _clock
# define __sys_time _time
# endif
#endif
/* === M A C R O S ========================================================= */
/* === T Y P E D E F S ===================================================== */
/* === C L A S S E S & S T R U C T S ======================================= */
namespace etl {
class clock_desc_sys_clock
{
public:
typedef float value_type;
inline static bool realtime()
{ return false; }
inline static bool proctime()
{ return true; }
inline static value_type
one_second()
{ return 1.0f; }
inline static value_type precision()
{ return one_second()/(value_type)CLOCKS_PER_SEC; }
inline static const char *description()
{ return "ANSI C clock()"; };
protected:
typedef clock_t timestamp;
static void
get_current_time(timestamp &time)
{ time=__sys_clock(); }
static timestamp
get_current_time()
{ return __sys_clock(); }
static value_type
timestamp_to_seconds(const timestamp &x)
{ return precision()*x; }
static timestamp
seconds_to_timestamp(const value_type &x)
{ return (timestamp)(x*(value_type)CLOCKS_PER_SEC+0.5); }
};
class clock_desc_sys_time
{
public:
typedef float value_type;
inline static bool realtime()
{ return true; }
inline static bool proctime()
{ return false; }
inline static value_type
one_second()
{ return 1.0f; }
inline static value_type precision()
{ return one_second(); }
inline static const char *description()
{ return "ANSI C time()"; };
protected:
typedef time_t timestamp;
static void
get_current_time(timestamp &time)
{ __sys_time(&time); }
static timestamp
get_current_time()
{ return __sys_time(NULL); }
static value_type
timestamp_to_seconds(const timestamp &x)
{ return (value_type)x; }
static timestamp
seconds_to_timestamp(const value_type &x)
{ return (timestamp)(x+(value_type)0.5f); }
};
};
/* === E N D =============================================================== */
#endif