richgel99@gmail.com
120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
// File: crn_win32_timer.cpp
|
|
// See Copyright Notice and license at the end of inc/crnlib.h
|
|
#include "crn_core.h"
|
|
#include "crn_win32_timer.h"
|
|
#include "crn_winhdr.h"
|
|
|
|
namespace crnlib
|
|
{
|
|
uint64 timer::g_init_ticks;
|
|
uint64 timer::g_freq;
|
|
double timer::g_inv_freq;
|
|
|
|
timer::timer() :
|
|
m_start_time(0),
|
|
m_stop_time(0),
|
|
m_started(false),
|
|
m_stopped(false)
|
|
{
|
|
if (!g_inv_freq) init();
|
|
}
|
|
|
|
timer::timer(timer_ticks start_ticks)
|
|
{
|
|
if (!g_inv_freq) init();
|
|
|
|
m_start_time = start_ticks;
|
|
|
|
m_started = true;
|
|
m_stopped = false;
|
|
}
|
|
|
|
void timer::start(timer_ticks start_ticks)
|
|
{
|
|
m_start_time = start_ticks;
|
|
|
|
m_started = true;
|
|
m_stopped = false;
|
|
}
|
|
|
|
void timer::start()
|
|
{
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&m_start_time);
|
|
|
|
m_started = true;
|
|
m_stopped = false;
|
|
}
|
|
|
|
void timer::stop()
|
|
{
|
|
CRNLIB_ASSERT(m_started);
|
|
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&m_stop_time);
|
|
|
|
m_stopped = true;
|
|
}
|
|
|
|
double timer::get_elapsed_secs() const
|
|
{
|
|
CRNLIB_ASSERT(m_started);
|
|
if (!m_started)
|
|
return 0;
|
|
|
|
uint64 stop_time = m_stop_time;
|
|
if (!m_stopped)
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&stop_time);
|
|
|
|
uint64 delta = stop_time - m_start_time;
|
|
return delta * g_inv_freq;
|
|
}
|
|
|
|
uint64 timer::get_elapsed_us() const
|
|
{
|
|
CRNLIB_ASSERT(m_started);
|
|
if (!m_started)
|
|
return 0;
|
|
|
|
uint64 stop_time = m_stop_time;
|
|
if (!m_stopped)
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&stop_time);
|
|
|
|
uint64 delta = stop_time - m_start_time;
|
|
return (delta * 1000000ULL + (g_freq >> 1U)) / g_freq;
|
|
}
|
|
|
|
void timer::init()
|
|
{
|
|
if (!g_inv_freq)
|
|
{
|
|
QueryPerformanceFrequency((LARGE_INTEGER*)&g_freq);
|
|
g_inv_freq = 1.0f / g_freq;
|
|
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&g_init_ticks);
|
|
}
|
|
}
|
|
|
|
timer_ticks timer::get_init_ticks()
|
|
{
|
|
if (!g_inv_freq) init();
|
|
|
|
return g_init_ticks;
|
|
}
|
|
|
|
timer_ticks timer::get_ticks()
|
|
{
|
|
if (!g_inv_freq) init();
|
|
|
|
timer_ticks ticks;
|
|
QueryPerformanceCounter((LARGE_INTEGER*)&ticks);
|
|
return ticks;
|
|
}
|
|
|
|
double timer::ticks_to_secs(timer_ticks ticks)
|
|
{
|
|
if (!g_inv_freq) init();
|
|
|
|
return ticks * g_inv_freq;
|
|
}
|
|
|
|
} // namespace crnlib
|