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Use CREATE_WAITABLE_TIMER_HIGH_RESOLUTION flag in SDL_Delay on Windows 10 version 1803 and later

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This commit is contained in:
Rémy Tassoux
2022-09-15 16:17:03 +02:00
committed by Sam Lantinga
parent 6d5526f3a5
commit 7d5ffbdab7
1 changed files with 26 additions and 12 deletions
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16
src/timer/windows/SDL_systimer.c
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@@ -146,7 +146,9 @@ SDL_GetPerformanceFrequency(void)
void void
SDL_Delay(Uint32 ms) SDL_Delay(Uint32 ms)
{ {
/* Sleep() is not publicly available to apps in early versions of WinRT. /* CREATE_WAITABLE_TIMER_HIGH_RESOLUTION flag was added in Windows 10 version 1803.
*
* Sleep() is not publicly available to apps in early versions of WinRT.
* *
* Visual C++ 2013 Update 4 re-introduced Sleep() for Windows 8.1 and * Visual C++ 2013 Update 4 re-introduced Sleep() for Windows 8.1 and
* Windows Phone 8.1. * Windows Phone 8.1.
@@ -158,6 +160,18 @@ SDL_Delay(Uint32 ms)
* Windows Phone 8.0, uses the Visual C++ 2012 compiler to build * Windows Phone 8.0, uses the Visual C++ 2012 compiler to build
* apps and libraries. * apps and libraries.
*/ */
#ifdef CREATE_WAITABLE_TIMER_HIGH_RESOLUTION
HANDLE timer = CreateWaitableTimerExW(NULL, NULL, CREATE_WAITABLE_TIMER_HIGH_RESOLUTION, TIMER_ALL_ACCESS);
if (timer) {
LARGE_INTEGER due_time;
due_time.QuadPart = -(LONGLONG)(ms * 10000);
if (SetWaitableTimerEx(timer, &due_time, 0, NULL, NULL, NULL, 0)) {
WaitForSingleObject(timer, INFINITE);
}
CloseHandle(timer);
return;
}
#endif
#if defined(__WINRT__) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER <= 180030723) #if defined(__WINRT__) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER <= 180030723)
static HANDLE mutex = 0; static HANDLE mutex = 0;
if (!mutex) { if (!mutex) {