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squash reallocs in command buffers by using large prealloced buffer, directly use virtual memory with it so os allocs on demand

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mark raw clock functions as noinline, the way msvc was inlining them and ordering the branches meant that rdtsc would often be speculatively executed
add alternative clock impl for win, instead of using queryperformancecounter we grab systemtime from kusershared. it does not have the same precision as queryperformancecounter, we only have 100 nanosecond precision, but we round to milliseconds so it never made sense to use the performance counter in the first place
stubbed out the "guest clock mutex"... (the entirety of clock.cc needs a rewrite)
added some helpers for minf/maxf without the nan handling behavior
This commit is contained in:
chss95cs@gmail.com
2022-08-14 13:42:08 -07:00
parent c9b2d10e17
commit 7cc364dcb8
11 changed files with 263 additions and 38 deletions
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178
src/xenia/base/platform_win.h
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@@ -34,31 +34,169 @@
#undef DeleteFile
#undef GetFirstChild
#define XE_USE_NTDLL_FUNCTIONS 1
#if XE_USE_NTDLL_FUNCTIONS==1
#define XE_USE_NTDLL_FUNCTIONS 1
#define XE_USE_KUSER_SHARED 1
#if XE_USE_NTDLL_FUNCTIONS == 1
/*
ntdll versions of functions often skip through a lot of extra garbage in KernelBase
ntdll versions of functions often skip through a lot of extra garbage in
KernelBase
*/
#define XE_NTDLL_IMPORT(name, cls, clsvar) \
static class cls { \
public: \
FARPROC fn;\
cls() : fn(nullptr) {\
auto ntdll = GetModuleHandleA("ntdll.dll");\
if (ntdll) { \
fn = GetProcAddress(ntdll, #name );\
}\
} \
template <typename TRet = void, typename... TArgs> \
inline TRet invoke(TArgs... args) {\
return reinterpret_cast<NTSYSAPI TRet(NTAPI*)(TArgs...)>(fn)(args...);\
}\
inline operator bool() const {\
return fn!=nullptr;\
}\
#define XE_NTDLL_IMPORT(name, cls, clsvar) \
static class cls { \
public: \
FARPROC fn; \
cls() : fn(nullptr) { \
auto ntdll = GetModuleHandleA("ntdll.dll"); \
if (ntdll) { \
fn = GetProcAddress(ntdll, #name); \
} \
} \
template <typename TRet = void, typename... TArgs> \
inline TRet invoke(TArgs... args) { \
return reinterpret_cast<NTSYSAPI TRet(NTAPI*)(TArgs...)>(fn)(args...); \
} \
inline operator bool() const { return fn != nullptr; } \
} clsvar
#else
#define XE_NTDLL_IMPORT(name, cls, clsvar) static constexpr bool clsvar = false
#endif
// KUSER_SHARED
struct __declspec(align(4)) _KSYSTEM_TIME {
unsigned int LowPart;
int High1Time;
int High2Time;
};
enum _NT_PRODUCT_TYPE {
NtProductWinNt = 0x1,
NtProductLanManNt = 0x2,
NtProductServer = 0x3,
};
enum _ALTERNATIVE_ARCHITECTURE_TYPE {
StandardDesign = 0x0,
NEC98x86 = 0x1,
EndAlternatives = 0x2,
};
#pragma pack(push, 1)
struct $3D940D5D03EF7F98CEE6737EDE752E57 {
__int8 _bf_0;
};
union $DA7A7E727E24E4DD62317E27558CCADA {
unsigned __int8 MitigationPolicies;
$3D940D5D03EF7F98CEE6737EDE752E57 __s1;
};
struct __declspec(align(4)) $4BF4056B39611650D41923F164DAFA52 {
__int32 _bf_0;
};
union __declspec(align(4)) $BB68545E345A5F8046EF3BC0FE928142 {
unsigned int SharedDataFlags;
$4BF4056B39611650D41923F164DAFA52 __s1;
};
union $5031D289C483414B89DA3F368D1FE62C {
volatile _KSYSTEM_TIME TickCount;
volatile unsigned __int64 TickCountQuad;
unsigned int ReservedTickCountOverlay[3];
};
struct $F91ACE6F13277DFC9425B9B8BBCB30F7 {
volatile unsigned __int8 QpcBypassEnabled;
unsigned __int8 QpcShift;
};
union __declspec(align(2)) $3C927F8BB7EAEE13CF0CFC3E60EDC8A9 {
unsigned __int16 QpcData;
$F91ACE6F13277DFC9425B9B8BBCB30F7 __s1;
};
struct __declspec(align(8)) _KUSER_SHARED_DATA {
unsigned int TickCountLowDeprecated;
unsigned int TickCountMultiplier;
volatile _KSYSTEM_TIME InterruptTime;
volatile _KSYSTEM_TIME SystemTime;
volatile _KSYSTEM_TIME TimeZoneBias;
unsigned __int16 ImageNumberLow;
unsigned __int16 ImageNumberHigh;
wchar_t NtSystemRoot[260];
unsigned int MaxStackTraceDepth;
unsigned int CryptoExponent;
unsigned int TimeZoneId;
unsigned int LargePageMinimum;
unsigned int AitSamplingValue;
unsigned int AppCompatFlag;
unsigned __int64 RNGSeedVersion;
unsigned int GlobalValidationRunlevel;
volatile int TimeZoneBiasStamp;
unsigned int NtBuildNumber;
_NT_PRODUCT_TYPE NtProductType;
unsigned __int8 ProductTypeIsValid;
unsigned __int8 Reserved0[1];
unsigned __int16 NativeProcessorArchitecture;
unsigned int NtMajorVersion;
unsigned int NtMinorVersion;
unsigned __int8 ProcessorFeatures[64];
unsigned int Reserved1;
unsigned int Reserved3;
volatile unsigned int TimeSlip;
_ALTERNATIVE_ARCHITECTURE_TYPE AlternativeArchitecture;
unsigned int BootId;
_LARGE_INTEGER SystemExpirationDate;
unsigned int SuiteMask;
unsigned __int8 KdDebuggerEnabled;
$DA7A7E727E24E4DD62317E27558CCADA ___u33;
unsigned __int8 Reserved6[2];
volatile unsigned int ActiveConsoleId;
volatile unsigned int DismountCount;
unsigned int ComPlusPackage;
unsigned int LastSystemRITEventTickCount;
unsigned int NumberOfPhysicalPages;
unsigned __int8 SafeBootMode;
unsigned __int8 VirtualizationFlags;
unsigned __int8 Reserved12[2];
$BB68545E345A5F8046EF3BC0FE928142 ___u43;
unsigned int DataFlagsPad[1];
unsigned __int64 TestRetInstruction;
__int64 QpcFrequency;
unsigned int SystemCall;
unsigned int SystemCallPad0;
unsigned __int64 SystemCallPad[2];
$5031D289C483414B89DA3F368D1FE62C ___u50;
unsigned int TickCountPad[1];
unsigned int Cookie;
unsigned int CookiePad[1];
__int64 ConsoleSessionForegroundProcessId;
unsigned __int64 TimeUpdateLock;
unsigned __int64 BaselineSystemTimeQpc;
unsigned __int64 BaselineInterruptTimeQpc;
unsigned __int64 QpcSystemTimeIncrement;
unsigned __int64 QpcInterruptTimeIncrement;
unsigned __int8 QpcSystemTimeIncrementShift;
unsigned __int8 QpcInterruptTimeIncrementShift;
unsigned __int16 UnparkedProcessorCount;
unsigned int EnclaveFeatureMask[4];
unsigned int TelemetryCoverageRound;
unsigned __int16 UserModeGlobalLogger[16];
unsigned int ImageFileExecutionOptions;
unsigned int LangGenerationCount;
unsigned __int64 Reserved4;
volatile unsigned __int64 InterruptTimeBias;
volatile unsigned __int64 QpcBias;
unsigned int ActiveProcessorCount;
volatile unsigned __int8 ActiveGroupCount;
unsigned __int8 Reserved9;
$3C927F8BB7EAEE13CF0CFC3E60EDC8A9 ___u74;
_LARGE_INTEGER TimeZoneBiasEffectiveStart;
_LARGE_INTEGER TimeZoneBiasEffectiveEnd;
_XSTATE_CONFIGURATION XState;
};
static constexpr unsigned KUSER_SIZE = sizeof(_KUSER_SHARED_DATA);
static_assert(KUSER_SIZE == 1808, "yay");
#pragma pack(pop)
static _KUSER_SHARED_DATA* KUserShared() {
return (_KUSER_SHARED_DATA*)0x7FFE0000;
}
#endif // XENIA_BASE_PLATFORM_WIN_H_