#include "pch.h"
#include "PlatformUtilities.h"

#ifdef _WIN32
	#include <windows.h>
#else
	#if defined(__x86_64__) || defined(_M_X64)
		#include <immintrin.h>
	#elif __aarch64__
		#include <arm_acle.h>
	#endif
#endif

void PlatformUtilities::IdleLoop()
{
#if _WIN32
	YieldProcessor();
#elif defined(__x86_64__) || defined(_M_X64)
	_mm_pause();
#elif __aarch64__
	#ifdef __clang__
	__isb(0xF);
	#endif
#endif
}

void PlatformUtilities::DisableScreensaver()
{
//Prevent screensaver/etc from starting while using the emulator
//DirectInput devices apparently do not always count as user input
#ifdef _WIN32
	SetThreadExecutionState(ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED | ES_CONTINUOUS);
#endif
}

void PlatformUtilities::EnableScreensaver()
{
#ifdef _WIN32
	SetThreadExecutionState(ES_CONTINUOUS);
#endif
}

void PlatformUtilities::EnableHighResolutionTimer()
{
#ifdef _WIN32
	//Request a 1ms timer resolution on Windows while a game is running
	timeBeginPeriod(1);
#endif
}

void PlatformUtilities::RestoreTimerResolution()
{
#ifdef _WIN32
	timeEndPeriod(1);
#endif
}