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/*
* --- GSMP-COPYRIGHT-NOTE-BEGIN ---
*
* This copyright note is auto-generated by ./scripts/Create-CopyPatch.
* Please add additional copyright information _after_ the line containing
* the GSMP-COPYRIGHT-NOTE-END tag. Otherwise it might get removed by
* the ./scripts/Create-CopyPatch script. Do not edit this copyright text!
*
* GSMP: utility/src/Timer.cc
* Copyright (C) 2018 René Rebe, ExactCODE GmbH; Germany.
* Copyright (C) 2000 - 2010 Valentin Ziegler and René Rebe
*
* This program 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; version 2. A copy of the GNU General
* Public License can be found in the file LICENSE.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANT-
* ABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* --- GSMP-COPYRIGHT-NOTE-END ---
*/
/*
* Alternatively, commercial licensing options are available from the
* copyright holder ExactCODE GmbH Germany.
*/
#include "Timer.hh"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef _WIN32
#include <windows.h> // Sleep()
#else
#include <unistd.h>
#endif
#include <iostream>
#ifndef _WIN32
Utility::TickTimer::TickTimer ()
{
times (&m_times);
}
void Utility::TickTimer::Reset ()
{
times (&m_times);
}
uint64_t Utility::TickTimer::Delta () const
{
tms t_times;
times (&t_times);
return t_times.tms_utime - m_times.tms_utime;
}
uint64_t Utility::TickTimer::Value () const
{
tms t_times;
times (&t_times);
return t_times.tms_utime;
}
uint64_t Utility::TickTimer::PerSecond () const
{
return sysconf (_SC_CLK_TCK);
}
#endif
// ---
#if 0 /* dead code */
Utility::TimebaseTimer::TimebaseTimer ()
{
start_tick = Value ();
}
void Utility::TimebaseTimer::Reset ()
{
start_tick = Value ();
}
uint64_t Utility::TimebaseTimer::Delta () const
{
return Value () - start_tick;
}
uint64_t Utility::TimebaseTimer::Value () const
{
#if defined(__i386__) || defined(_MSC_VER)
#ifdef _MSC_VER
#if _M_X64
return __rdtsc();
#else
uint32_t lo, hi;
__asm rdtsc
__asm mov lo, eax
__asm mov hi, edx
return ((uint64_t)hi << 32) | lo;
#endif
#else
uint64_t x;
__asm__ __volatile__ (".byte 0x0f, 0x31" : "=A" (x));
return x;
#endif
#elif defined(__x86_64__)
uint32_t hi, lo;
__asm__ __volatile__ ("rdtsc" : "=a"(lo), "=d"(hi));
return ((uint64_t)hi << 32) | lo;
#elif defined(__powerpc64__)
uint64_t x;
__asm__ __volatile__ (
"\tmftb %0"
: "=r"(x)
);
return x;
#elif defined(__powerpc__) || defined(__ppc__)
uint32_t hi, lo, tmp;
__asm__ __volatile__ (
"0: \n"
"\tmftbu %0 \n"
"\tmftb %1 \n"
"\tmftbu %2 \n"
"\tcmpw %2,%0 \n"
"\tbne 0b \n"
: "=r"(hi),"=r"(lo),"=r"(tmp)
);
return ((uint64_t)hi << 32) | lo;
#elif defined(__sparc_v9__)
#ifdef __LP64__
uint64_t ticks;
__asm__ volatile(
"rd %%tick, %0\n"
: "=r" (ticks) // : "0" (ticks)
);
return ticks;
#else
uint32_t hi, lo;
__asm__ volatile(
"rd %%tick,%%g3\n"
"\tor %%g3,0,%0\n" // lower bits
"\tsrlx %%g3,32,%%g3\n"
"\tor %%g3,0,%1" // higher bits
: "=r" (lo), "=r" (hi)
);
return ((uint64_t)hi << 32) | lo;
#endif
#elif defined(__mips__)
unsigned int ticks;
__asm__ __volatile__ ("dmfc0 %0,$9" : "=r" (ticks));
return ticks;
#elif defined(__ia64__)
unsigned int ticks;
__asm__ __volatile__ ("mov %0=ar.itc ;;" : "=rO" (ticks));
return ticks;
#elif defined(__bfin__)
unsigned int ticks;
__asm__ __volatile__ ("%0 = CYCLES;\n\t" : "=&d" (ticks) : : "R1");
return ticks
#else
// TODO (at least): Alpha, ARM, AVR32, SuperH, ...
#warning "No CPU timebase read implemented for this architecture, yet!"
return 0;
#endif
}
uint64_t Utility::TimebaseTimer::PerSecond () const
{
static uint64_t per_second = 0;
// meassure, not yet very accurate, depends on a exact 1s schedule of the OS
if (!per_second) {
uint64_t s1 = Value ();
#ifndef _WIN32
sleep (1);
#else
Sleep (1000);
#endif
uint64_t s2 = Value ();
per_second = s2 - s1;
}
return per_second;
}
#endif
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