minetest/irr/src/os.h

108 lines
2.7 KiB
C++

// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "irrTypes.h"
#include "irrString.h"
#include "path.h"
#include "ILogger.h"
#include "ITimer.h"
// CODE_UNREACHABLE(): Invokes undefined behavior for unreachable code optimization
#if defined(__cpp_lib_unreachable)
#include <utility>
#define CODE_UNREACHABLE() std::unreachable()
#elif defined(__has_builtin)
#if __has_builtin(__builtin_unreachable)
#define CODE_UNREACHABLE() __builtin_unreachable()
#endif
#elif defined(_MSC_VER)
#define CODE_UNREACHABLE() __assume(false)
#endif
#ifndef CODE_UNREACHABLE
#define CODE_UNREACHABLE() (void)0
#endif
namespace irr
{
namespace os
{
class Byteswap
{
public:
static u16 byteswap(u16 num);
static s16 byteswap(s16 num);
static u32 byteswap(u32 num);
static s32 byteswap(s32 num);
static u64 byteswap(u64 num);
static s64 byteswap(s64 num);
static f32 byteswap(f32 num);
// prevent accidental swapping of chars
static inline u8 byteswap(u8 num) { return num; }
static inline c8 byteswap(c8 num) { return num; }
};
class Printer
{
public:
// prints out a string to the console out stdout or debug log or whatever
static void print(const c8 *message, ELOG_LEVEL ll = ELL_INFORMATION);
static void log(const c8 *message, ELOG_LEVEL ll = ELL_INFORMATION);
static void log(const wchar_t *message, ELOG_LEVEL ll = ELL_INFORMATION);
// The string ": " is added between message and hint
static void log(const c8 *message, const c8 *hint, ELOG_LEVEL ll = ELL_INFORMATION);
static void log(const c8 *message, const io::path &hint, ELOG_LEVEL ll = ELL_INFORMATION);
static ILogger *Logger;
};
class Timer
{
public:
//! returns the current time in milliseconds
static u32 getTime();
//! initializes the real timer
static void initTimer();
//! sets the current virtual (game) time
static void setTime(u32 time);
//! stops the virtual (game) timer
static void stopTimer();
//! starts the game timer
static void startTimer();
//! sets the speed of the virtual timer
static void setSpeed(f32 speed);
//! gets the speed of the virtual timer
static f32 getSpeed();
//! returns if the timer currently is stopped
static bool isStopped();
//! makes the virtual timer update the time value based on the real time
static void tick();
//! returns the current real time in milliseconds
static u32 getRealTime();
private:
static void initVirtualTimer();
static f32 VirtualTimerSpeed;
static s32 VirtualTimerStopCounter;
static u32 StartRealTime;
static u32 LastVirtualTime;
static u32 StaticTime;
};
} // end namespace os
} // end namespace irr