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Code Issues Projects Releases Activity

Disable timer resolution throttling

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This commit is contained in:
narzoul 2022-12-13 13:31:22 +01:00
parent 97197dde6a
commit 15d78048d0
1 changed files with 15 additions and 0 deletions
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15
DDrawCompat/Win32/Winmm.cpp
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@ -7,6 +7,19 @@
namespace namespace
{ {
void disableTimerResolutionThrottling()
{
auto setProcessInformation = reinterpret_cast<decltype(&SetProcessInformation)>(
Compat::getProcAddress(GetModuleHandle("kernel32"), "SetProcessInformation"));
if (setProcessInformation)
{
PROCESS_POWER_THROTTLING_STATE ppts = {};
ppts.Version = PROCESS_POWER_THROTTLING_CURRENT_VERSION;
ppts.ControlMask = 4; // PROCESS_POWER_THROTTLING_IGNORE_TIMER_RESOLUTION
setProcessInformation(GetCurrentProcess(), ProcessPowerThrottling, &ppts, sizeof(ppts));
}
}
MMRESULT WINAPI TimeBeginPeriod(UINT uPeriod) MMRESULT WINAPI TimeBeginPeriod(UINT uPeriod)
{ {
LOG_FUNC("timeBeginPeriod", uPeriod); LOG_FUNC("timeBeginPeriod", uPeriod);
@ -26,6 +39,8 @@ namespace Win32
{ {
void installHooks() void installHooks()
{ {
disableTimerResolutionThrottling();
if (Compat::getProcAddress(GetModuleHandle("kernel32"), "timeBeginPeriod")) if (Compat::getProcAddress(GetModuleHandle("kernel32"), "timeBeginPeriod"))
{ {
HOOK_FUNCTION(kernel32, timeBeginPeriod, TimeBeginPeriod); HOOK_FUNCTION(kernel32, timeBeginPeriod, TimeBeginPeriod);