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// SPDX-FileCopyrightText: 2002-2025 PCSX2 Dev Team
// SPDX-License-Identifier: GPL-3.0+
#include "Timer.h"
#include <cstdio>
#include <cstdlib>
#if defined(_WIN32)
#include "RedtapeWindows.h"
#else
#include <time.h>
#endif
namespace Common
{
#ifdef _WIN32
static double s_counter_frequency;
static bool s_counter_initialized = false;
Timer::Value Timer::GetCurrentValue()
{
// even if this races, it should still result in the same value..
if (!s_counter_initialized)
{
LARGE_INTEGER Freq;
QueryPerformanceFrequency(&Freq);
s_counter_frequency = static_cast<double>(Freq.QuadPart) / 1000000000.0;
s_counter_initialized = true;
}
Timer::Value ReturnValue;
QueryPerformanceCounter(reinterpret_cast<LARGE_INTEGER*>(&ReturnValue));
return ReturnValue;
}
double Timer::ConvertValueToNanoseconds(Timer::Value value)
{
return (static_cast<double>(value) / s_counter_frequency);
}
double Timer::ConvertValueToMilliseconds(Timer::Value value)
{
return ((static_cast<double>(value) / s_counter_frequency) / 1000000.0);
}
double Timer::ConvertValueToSeconds(Timer::Value value)
{
return ((static_cast<double>(value) / s_counter_frequency) / 1000000000.0);
}
Timer::Value Timer::ConvertSecondsToValue(double s)
{
return static_cast<Value>((s * 1000000000.0) * s_counter_frequency);
}
Timer::Value Timer::ConvertMillisecondsToValue(double ms)
{
return static_cast<Value>((ms * 1000000.0) * s_counter_frequency);
}
Timer::Value Timer::ConvertNanosecondsToValue(double ns)
{
return static_cast<Value>(ns * s_counter_frequency);
}
#else
Timer::Value Timer::GetCurrentValue()
{
struct timespec tv;
clock_gettime(CLOCK_MONOTONIC, &tv);
return ((Value)tv.tv_nsec + (Value)tv.tv_sec * 1000000000);
}
double Timer::ConvertValueToNanoseconds(Timer::Value value)
{
return static_cast<double>(value);
}
double Timer::ConvertValueToMilliseconds(Timer::Value value)
{
return (static_cast<double>(value) / 1000000.0);
}
double Timer::ConvertValueToSeconds(Timer::Value value)
{
return (static_cast<double>(value) / 1000000000.0);
}
Timer::Value Timer::ConvertSecondsToValue(double s)
{
return static_cast<Value>(s * 1000000000.0);
}
Timer::Value Timer::ConvertMillisecondsToValue(double ms)
{
return static_cast<Value>(ms * 1000000.0);
}
Timer::Value Timer::ConvertNanosecondsToValue(double ns)
{
return static_cast<Value>(ns);
}
#endif
Timer::Timer()
{
Reset();
}
Timer::Timer(Value start_value)
{
m_tvStartValue = start_value;
}
void Timer::Reset()
{
m_tvStartValue = GetCurrentValue();
}
double Timer::GetTimeSeconds() const
{
return ConvertValueToSeconds(GetCurrentValue() - m_tvStartValue);
}
double Timer::GetTimeMilliseconds() const
{
return ConvertValueToMilliseconds(GetCurrentValue() - m_tvStartValue);
}
double Timer::GetTimeNanoseconds() const
{
return ConvertValueToNanoseconds(GetCurrentValue() - m_tvStartValue);
}
double Timer::GetTimeSecondsAndReset()
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToSeconds(value - m_tvStartValue);
m_tvStartValue = value;
return ret;
}
double Timer::GetTimeMillisecondsAndReset()
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToMilliseconds(value - m_tvStartValue);
m_tvStartValue = value;
return ret;
}
double Timer::GetTimeNanosecondsAndReset()
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToNanoseconds(value - m_tvStartValue);
m_tvStartValue = value;
return ret;
}
bool Timer::ResetIfSecondsPassed(double s)
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToSeconds(value - m_tvStartValue);
if (ret < s)
return false;
m_tvStartValue = value;
return true;
}
bool Timer::ResetIfMillisecondsPassed(double s)
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToMilliseconds(value - m_tvStartValue);
if (ret < s)
return false;
m_tvStartValue = value;
return true;
}
bool Timer::ResetIfNanosecondsPassed(double s)
{
const Value value = GetCurrentValue();
const double ret = ConvertValueToNanoseconds(value - m_tvStartValue);
if (ret < s)
return false;
m_tvStartValue = value;
return true;
}
} // namespace Common
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