[+] NT 3.5 through Windows 7 specific clock backends
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@ -135,7 +135,9 @@ namespace Aurora
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ADD_GET_PROC(Kernel32, GetThreadId)
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ADD_GET_PROC(Kernel32, VerifyVersionInfoW)
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ADD_GET_PROC(Kernel32, VerSetConditionMask)
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ADD_GET_PROC(Kernel32, QueryPerformanceCounter)
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ADD_GET_PROC(Kernel32, QueryPerformanceFrequency)
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ADD_GET_PROC_BI2(Kernel32, PSAPILegacy, K32GetProcessMemoryInfo, GetProcessMemoryInfo)
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ADD_GET_PROC(Sync, WaitOnAddress)
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@ -190,7 +192,7 @@ namespace Aurora
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pNtCreateKeyedEvent(&Threading::Primitives::gKeyedEventHandle, -1, NULL, 0);
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}
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}
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#else
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pLoadLibraryW = UWPLibraryW;
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pGetProcAddress = UWPProcAddress;
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@ -225,6 +227,9 @@ namespace Aurora
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pPrefetchVirtualMemory = PrefetchVirtualMemory;
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pQueryPerformanceCounter = decltype(pQueryPerformanceCounter)(QueryPerformanceCounter);
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pQueryPerformanceFrequency = decltype(pQueryPerformanceFrequency)(QueryPerformanceFrequency);
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// https://github.com/LWJGL/lwjgl3/blob/master/modules/lwjgl/remotery/src/main/c/Remotery.c#L1188
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// Xbox main SDK has a better API we should use
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// So...
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@ -373,6 +373,24 @@ namespace Aurora
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inline BOOL(__stdcall *pCancelSynchronousIo)(
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HANDLE hThread
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);
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#if 0
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inline BOOL(__stdcall *pQueryPerformanceCounter)(
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LARGE_INTEGER * lpPerformanceCount
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);
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inline BOOL(__stdcall *pQueryPerformanceFrequency)(
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LARGE_INTEGER * lpPerformanceCount
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);
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#else // no one will notice
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inline BOOL(__stdcall *pQueryPerformanceCounter)(
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long long * lpPerformanceCount
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);
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inline BOOL(__stdcall *pQueryPerformanceFrequency)(
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long long * lpPerformanceCount
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);
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#endif
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inline BOOL(__stdcall *pGetProcessMemoryInfo)(
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HANDLE Process,
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@ -15,11 +15,187 @@
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#elif defined(AURORA_IS_MODERNNT_DERIVED)
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#include <SWInfo/AuSWInfo.hpp>
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static AuUInt8 _gNTClockMode {};
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static long long(__cdecl *_gNTQuery)();
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static long long(__cdecl *_gNTFreq)();
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struct NTSystemTime
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{
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NTSystemTime(volatile NTSystemTime &dumb)
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{
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this->LowPart = dumb.LowPart;
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this->High1Time = dumb.High1Time;
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this->High2Time = dumb.High2Time;
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}
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unsigned long LowPart;
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long High1Time;
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long High2Time;
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};
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struct NTQPCoefficients
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{
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union
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{
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UCHAR TscQpcData;
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struct
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{
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UCHAR TscQpcEnabled : 1;
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UCHAR TscQpcSpareFlag : 1;
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UCHAR TscQpcShift : 6;
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};
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};
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};
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static unsigned long long _NT3_Query_Frequency();
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static void _NTSetFallbackClock();
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static void * kKUSERShardDataOffset = AuReinterpretCast<void *>(0x7ffe0000);
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static auto * kKInterruptTime = AuReinterpretCast<volatile NTSystemTime *>(AuReinterpretCast<AuUInt8 *>(kKUSERShardDataOffset) + 8);
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static auto * kKQPCData = AuReinterpretCast<NTQPCoefficients *>(AuReinterpretCast<AuUInt8 *>(kKUSERShardDataOffset) + 0x2ED);
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static AuUInt64 _gNTTimeShift {};
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static AuUInt64 _gNTTimeBias {};
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static AuUInt64 _gNTTimeFreq { _NT3_Query_Frequency() };
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static unsigned long long _NT3_Query_Frequency()
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{
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return 1'0000'000ull;
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}
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static void _NT6_1_Init()
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{
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NTQPCoefficients now;
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now.TscQpcData = AuAtomicLoad(&kKQPCData->TscQpcData);
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if (!now.TscQpcEnabled)
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{
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_NTSetFallbackClock();
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return;
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}
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_gNTTimeShift = now.TscQpcShift;
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_gNTTimeBias = *AuReinterpretCast<ULONGLONG *>(AuReinterpretCast<AuUInt8 *>(kKUSERShardDataOffset) + 0x3B8);
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long long uvalue {};
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SysAssert(Aurora::pQueryPerformanceFrequency &&
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Aurora::pQueryPerformanceFrequency(&uvalue), "no perf frequency");
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_gNTTimeFreq = uvalue;
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_gNTClockMode = 1;
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}
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static long long _NT6_1_Query_Frequency()
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{
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return _gNTTimeFreq;
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}
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static unsigned long long _NT6_1_Query_Counter()
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{
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#if defined(AURORA_ARCH_X64) || defined(AURORA_ARCH_X86)
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AuUInt64 uTimeNow = __rdtsc();
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uTimeNow += _gNTTimeBias;
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uTimeNow >>= _gNTTimeShift;
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return uTimeNow;
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#endif
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return 0;
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}
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static long long _NT3_Query_Counter()
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{
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auto interruptTime = *kKInterruptTime;
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return (AuUInt64(kKInterruptTime->High1Time) << 32ull) | interruptTime.LowPart;
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}
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static void _NTSetFallbackClock()
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{
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_gNTFreq = []()
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{
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long long uvalue {};
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SysAssert(Aurora::pQueryPerformanceFrequency &&
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Aurora::pQueryPerformanceFrequency(&uvalue), "no perf frequency");
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return uvalue;
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};
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_gNTQuery = []()
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{
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long long uvalue {};
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SysAssert(Aurora::pQueryPerformanceCounter &&
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Aurora::pQueryPerformanceCounter(&uvalue), "no perf counter");
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return uvalue;
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};
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_gNTClockMode = 2;
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}
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static void _NTDoClockInit()
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{
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static AuInitOnce gInitOnce;
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gInitOnce.Call([]
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{
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Aurora::InitNTAddresses();
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AuSwInfo::InitSwInfo();
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if constexpr (AuBuild::kCurrentPlatform == AuBuild::EPlatform::ePlatformWin32)
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{
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if (!AuSwInfo::IsWindows7OrGreater())
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{
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_gNTClockMode = 0;
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}
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else if (AuSwInfo::IsWindows7Any())
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{
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_NT6_1_Init();
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}
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else //if (AuSwInfo::IsWindows8OrGreater())
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{
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_NTSetFallbackClock();
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}
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}
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else
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{
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_gNTClockMode = 2;
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_gNTFreq = _Query_perf_frequency;
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_gNTQuery = _Query_perf_counter;
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}
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});
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}
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AUKN_SYM unsigned long long _NTLikeQueryFrequency()
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{
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_NTDoClockInit();
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switch (_gNTClockMode)
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{
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case 0:
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return _NT3_Query_Frequency();
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case 1:
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return _NT6_1_Query_Frequency();
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case 2:
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return _gNTFreq();
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default:
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return 0;
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}
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}
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AUKN_SYM unsigned long long _NTLikeQueryCounter()
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{
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switch (_gNTClockMode)
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{
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case 0:
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return _NT3_Query_Counter();
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case 1:
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return _NT6_1_Query_Counter();
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case 2:
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return _gNTQuery();
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default:
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return 0;
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}
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}
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// benchmarking: https://github.com/microsoft/STL/issues/2085
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static AuUInt64 _GetSteadyTimeNS()
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{
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static const long long gFreq = _Query_perf_frequency();
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const long long uCounter = _Query_perf_counter();
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static const long long gFreq = _NTLikeQueryFrequency();
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const long long uCounter = _NTLikeQueryCounter();
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if (gFreq == 10000000)
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{
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@ -103,7 +279,7 @@ namespace Aurora::Time
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AUKN_SYM AuUInt64 SteadyClock()
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{
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#if defined(AURORA_IS_MODERNNT_DERIVED)
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return _Query_perf_counter();
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return _NTLikeQueryCounter();
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#else
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return SteadyClockNS() / (1000000000ull / SteadyClockJiffies());
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#endif
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@ -156,7 +332,7 @@ namespace Aurora::Time
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}
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#if defined(AURORA_COMPILER_MSVC)
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return gFrequency = _Query_perf_frequency();
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return gFrequency = _NTLikeQueryFrequency();
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#elif defined(AURORA_IS_POSIX_DERIVED)
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::timespec spec {};
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if (::clock_getres(CLOCK_MONOTONIC, &spec) == 0)
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