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[NTVDM]: Make static some variables, fix IRQ1/12 timing, use NT QueryPerformanceCounter API instead of its Win32 part and move the "while (VdmRunning && CpuRunning)" loop into ClockUpdate.

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svn path=/trunk/; revision=65377
This commit is contained in:
Hermès Bélusca-Maïto 2014-11-11 15:49:56 +00:00
parent 2f840d26f8
commit 77ee067aa5
1 changed files with 36 additions and 20 deletions
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56
reactos/subsystems/ntvdm/clock.c
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@ -21,6 +21,9 @@
#include "hardware/timer.h"
#include "hardware/vga.h"
/* Extra PSDK/NDK Headers */
#include <ndk/kefuncs.h>
/* DEFINES ********************************************************************/
/*
@ -43,20 +46,19 @@
/* VARIABLES ******************************************************************/
LARGE_INTEGER StartPerfCount, Frequency;
static LARGE_INTEGER StartPerfCount, Frequency;
LARGE_INTEGER LastTimerTick, LastRtcTick, Counter;
LONGLONG TimerTicks;
DWORD StartTickCount, CurrentTickCount;
DWORD LastClockUpdate;
DWORD LastVerticalRefresh;
static LARGE_INTEGER LastTimerTick, LastRtcTick, Counter;
static LONGLONG TimerTicks;
static DWORD StartTickCount, CurrentTickCount;
static DWORD LastClockUpdate;
static DWORD LastVerticalRefresh;
UINT Irq1Counter = 0;
UINT Irq12Counter = 0;
static DWORD LastIrq1Tick = 0, LastIrq12Tick = 0;
#ifdef IPS_DISPLAY
DWORD LastCyclePrintout;
ULONGLONG Cycles = 0;
static DWORD LastCyclePrintout;
static ULONGLONG Cycles = 0;
#endif
/* PUBLIC FUNCTIONS ***********************************************************/
@ -65,11 +67,20 @@ VOID ClockUpdate(VOID)
{
extern BOOLEAN CpuRunning;
UINT i;
// LARGE_INTEGER Counter;
#ifdef WORKING_TIMER
DWORD PitResolution = PitGetResolution();
DWORD PitResolution;
#endif
DWORD RtcFrequency = RtcGetTicksPerSecond();
DWORD RtcFrequency;
while (VdmRunning && CpuRunning)
{
#ifdef WORKING_TIMER
PitResolution = PitGetResolution();
#endif
RtcFrequency = RtcGetTicksPerSecond();
/* Get the current number of ticks */
CurrentTickCount = GetTickCount();
@ -86,7 +97,9 @@ VOID ClockUpdate(VOID)
#endif
{
/* Get the current performance counter value */
QueryPerformanceCounter(&Counter);
/// DWORD_PTR oldmask = SetThreadAffinityMask(GetCurrentThread(), 0);
NtQueryPerformanceCounter(&Counter, NULL);
/// SetThreadAffinityMask(GetCurrentThread(), oldmask);
}
/* Get the number of PIT ticks that have passed */
@ -122,16 +135,16 @@ VOID ClockUpdate(VOID)
LastVerticalRefresh = CurrentTickCount;
}
if (++Irq1Counter == IRQ1_CYCLES)
if ((CurrentTickCount - LastIrq1Tick) >= IRQ1_CYCLES)
{
GenerateIrq1();
Irq1Counter = 0;
LastIrq1Tick = CurrentTickCount;
}
if (++Irq12Counter == IRQ12_CYCLES)
if ((CurrentTickCount - LastIrq12Tick) >= IRQ12_CYCLES)
{
GenerateIrq12();
Irq12Counter = 0;
LastIrq12Tick = CurrentTickCount;
}
/* Horizontal retrace occurs as fast as possible */
@ -154,20 +167,23 @@ VOID ClockUpdate(VOID)
Cycles = 0;
}
#endif
}
}
BOOLEAN ClockInitialize(VOID)
{
/* Initialize the performance counter (needed for hardware timers) */
if (!QueryPerformanceFrequency(&Frequency))
/* Find the starting performance */
NtQueryPerformanceCounter(&StartPerfCount, &Frequency);
if (Frequency.QuadPart == 0)
{
wprintf(L"FATAL: Performance counter not available\n");
return FALSE;
}
/* Find the starting performance and tick count */
/* Find the starting tick count */
StartTickCount = GetTickCount();
QueryPerformanceCounter(&StartPerfCount);
/* Set the different last counts to the starting count */
LastClockUpdate = LastVerticalRefresh =