jalr/OpenRGB
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add IGNORE_TIMER_RESOLUTION back for Windows 11 but keep NtSetTimerResolution in a loop

Browse source
This commit is contained in:
Adam Honse 2025-05-08 19:31:15 -05:00
parent aa66814c43
commit ce62d9998e
1 changed files with 34 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

52
main.cpp
View file

@ -35,7 +35,7 @@ using namespace std::chrono_literals;
/******************************************************************************************\
* *
* InitializeTimerResolution (Win32) *
* InitializeTimerResolutionThreadFunction (Win32) *
* *
* On Windows, the default timer resolution is 15.6ms. For higher accuracy delays, *
* the timer resolution should be set to a shorter interval. The shortest interval *
@ -43,27 +43,43 @@ using namespace std::chrono_literals;
* *
\******************************************************************************************/
#ifdef _WIN32
typedef unsigned int NTSTATUS;
typedef NTSTATUS (*NTSETTIMERRESOLUTION)(ULONG DesiredResolution, BOOLEAN SetResolution, PULONG CurrentResolution);
void InitializeTimerResolution()
{
NTSETTIMERRESOLUTION NtSetTimerResolution;
HMODULE NtDllHandle;
ULONG CurrentResolution;
NtDllHandle = LoadLibrary("ntdll.dll");
NtSetTimerResolution = (NTSETTIMERRESOLUTION)GetProcAddress(NtDllHandle, "NtSetTimerResolution");
NtSetTimerResolution(5000, TRUE, &CurrentResolution);
}
void InitializeTimerResolutionThreadFunction()
{
/*-----------------------------------------------------*\
| NtSetTimerResolution function pointer type |
\*-----------------------------------------------------*/
typedef unsigned int NTSTATUS;
typedef NTSTATUS (*NTSETTIMERRESOLUTION)(ULONG DesiredResolution, BOOLEAN SetResolution, PULONG CurrentResolution);
/*-----------------------------------------------------*\
| PROCESS_POWER_THROTTLING_IGNORE_TIMER_RESOLUTION = 4, |
| isn't defined in Win10 headers |
\*-----------------------------------------------------*/
PROCESS_POWER_THROTTLING_STATE PowerThrottlingState { PROCESS_POWER_THROTTLING_CURRENT_VERSION, 4, 0 };
ULONG CurrentResolution;
HMODULE NtDllHandle;
NTSETTIMERRESOLUTION NtSetTimerResolution;
/*-----------------------------------------------------*\
| Load ntdll.dll and get pointer to NtSetTimerResolution|
\*-----------------------------------------------------*/
NtDllHandle = LoadLibrary("ntdll.dll");
NtSetTimerResolution = (NTSETTIMERRESOLUTION)GetProcAddress(NtDllHandle, "NtSetTimerResolution");
/*-----------------------------------------------------*\
| Windows 11 requires |
| PROCESS_POWER_THROTTLING_IGNORE_TIMER_RESOLUTION |
\*-----------------------------------------------------*/
SetProcessInformation(GetCurrentProcess(), ProcessPowerThrottling, &PowerThrottlingState, sizeof(PowerThrottlingState));
/*-----------------------------------------------------*\
| Call NtSetTimerResolution to set timer resolution to |
| 0.5ms every 500ms |
\*-----------------------------------------------------*/
while(1)
{
InitializeTimerResolution();
NtSetTimerResolution(5000, TRUE, &CurrentResolution);
std::this_thread::sleep_for(500ms);
}