[hbelusca] 61021: [NTVDM] Initialize LastClockUpdate, LastVerticalRefresh and LastCyclePrintout with the value of StartTickCount.

Author: hbelusca
Date: Sun Nov 17 20:44:23 2013
New Revision: 61021

URL: http://svn.reactos.org/svn/reactos?rev=61021&view=rev
Log:
[NTVDM]
Initialize LastClockUpdate, LastVerticalRefresh and LastCyclePrintout with the value of StartTickCount.

Modified:
    branches/ntvdm/subsystems/ntvdm/ntvdm.c

Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.c
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/ntvdm.c?r...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/ntvdm.c	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/ntvdm.c	[iso-8859-1] Sun Nov 17 20:44:23 2013
@@ -70,15 +70,14 @@
 {
     INT i;
     CHAR CommandLine[DOS_CMDLINE_LENGTH];
-    DWORD CurrentTickCount;
-    DWORD Cycles = 0;
-    DWORD LastCyclePrintout = GetTickCount();
-    DWORD LastVerticalRefresh = GetTickCount();
-    DWORD LastClockUpdate = GetTickCount();
+    LARGE_INTEGER StartPerfCount;
     LARGE_INTEGER Frequency, LastTimerTick, LastRtcTick, Counter;
     LONGLONG TimerTicks;
-    LARGE_INTEGER StartPerfCount;
-    DWORD StartTickCount;
+    DWORD StartTickCount, CurrentTickCount;
+    DWORD LastClockUpdate;
+    DWORD LastVerticalRefresh;
+    DWORD LastCyclePrintout;
+    DWORD Cycles = 0;

/* Set the handler routine */
     SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE);
@@ -109,7 +108,7 @@
         wprintf(L"FATAL: Failed to initialize the CPU emulator\n");
         goto Cleanup;
     }
-    
+
     /* Initialize the performance counter (needed for hardware timers) */
     if (!QueryPerformanceFrequency(&Frequency))
     {
@@ -151,7 +150,10 @@
     /* Find the starting performance and tick count */
     StartTickCount = GetTickCount();
     QueryPerformanceCounter(&StartPerfCount);
- 
+
+    /* Set the different last counts to the starting count */
+    LastClockUpdate = LastVerticalRefresh = LastCyclePrintout = StartTickCount;
+
     /* Set the last timer ticks to the current time */
     LastTimerTick = LastRtcTick = StartPerfCount;

@@ -163,7 +165,7 @@

/* Get the current number of ticks */
         CurrentTickCount = GetTickCount();
- 
+
         if ((PitResolution <= 1000) && (RtcFrequency <= 1000))
         {
             /* Calculate the approximate performance counter value instead */
@@ -176,7 +178,7 @@
             /* Get the current performance counter value */
             QueryPerformanceCounter(&Counter);
         }
- 
+
         /* Get the number of PIT ticks that have passed */
         TimerTicks = ((Counter.QuadPart - LastTimerTick.QuadPart)
                      * PIT_BASE_FREQUENCY) / Frequency.QuadPart;