mirror of
https://github.com/0ldsk00l/nestopia.git
synced 2025-04-02 10:31:51 -04:00
110 lines
2.1 KiB
C++
110 lines
2.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Nestopia - NES/Famicom emulator written in C++
|
|
//
|
|
// Copyright (C) 2003-2008 Martin Freij
|
|
//
|
|
// This file is part of Nestopia.
|
|
//
|
|
// Nestopia 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.
|
|
//
|
|
// Nestopia 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.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Nestopia; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef NST_SYSTEM_TIMER_H
|
|
#define NST_SYSTEM_TIMER_H
|
|
|
|
#pragma once
|
|
|
|
#include "NstMain.hpp"
|
|
|
|
namespace Nestopia
|
|
{
|
|
namespace System
|
|
{
|
|
class Timer
|
|
{
|
|
public:
|
|
|
|
typedef qaword Value;
|
|
|
|
enum Type
|
|
{
|
|
MULTIMEDIA,
|
|
PERFORMANCE
|
|
};
|
|
|
|
explicit Timer(Type=MULTIMEDIA);
|
|
|
|
bool Reset(Type);
|
|
Value Elapsed() const;
|
|
bool Wait(Value,Value);
|
|
|
|
private:
|
|
|
|
static inline bool QueryPf(Value&);
|
|
|
|
enum
|
|
{
|
|
THRESHOLD = 1,
|
|
CHECKPOINT = 60,
|
|
SUSPICIOUS = 3,
|
|
MIN_PF_FRQ = 1000,
|
|
MAX_PF_FRQ = 0x10000000
|
|
};
|
|
|
|
struct Settings
|
|
{
|
|
Settings();
|
|
~Settings();
|
|
|
|
Value pfFrequency;
|
|
uint period;
|
|
};
|
|
|
|
Value start;
|
|
Value frequency;
|
|
Value checkPoint;
|
|
Type type;
|
|
uint threshold;
|
|
uint giveup;
|
|
|
|
static const Settings settings;
|
|
|
|
public:
|
|
|
|
static bool HasPerformanceCounter()
|
|
{
|
|
return settings.pfFrequency != 0;
|
|
}
|
|
|
|
static Value GetPerformanceCounterFrequency()
|
|
{
|
|
return settings.pfFrequency;
|
|
}
|
|
|
|
Type GetType() const
|
|
{
|
|
return type;
|
|
}
|
|
|
|
Value GetFrequency() const
|
|
{
|
|
return frequency;
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|