[aandrejevic] 59279: [NTVDM] Improve keyboard IRQ performance. Add debug output to measure number of instructions per second.

Author: aandrejevic
Date: Sat Jun 22 01:41:51 2013
New Revision: 59279

URL: http://svn.reactos.org/svn/reactos?rev=59279&view=rev
Log:
[NTVDM]
Improve keyboard IRQ performance.
Add debug output to measure number of instructions per second.

Modified:
    branches/ntvdm/subsystems/ntvdm/CMakeLists.txt
    branches/ntvdm/subsystems/ntvdm/ntvdm.c
    branches/ntvdm/subsystems/ntvdm/ntvdm.h

Modified: branches/ntvdm/subsystems/ntvdm/CMakeLists.txt
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/CMakeList...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/CMakeLists.txt	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/CMakeLists.txt	[iso-8859-1] Sat Jun 22 01:41:51 2013
@@ -12,6 +12,6 @@
 add_executable(ntvdm ${SOURCE})
 set_module_type(ntvdm win32cui UNICODE)
 target_link_libraries(ntvdm softx86 softx87)
-add_importlibs(ntvdm msvcrt user32 kernel32)
+add_importlibs(ntvdm msvcrt user32 kernel32 ntdll)
 add_dependencies(ntvdm softx86 softx87)
 add_cd_file(TARGET ntvdm DESTINATION reactos/system32 FOR all)

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] Sat Jun 22 01:41:51 2013
@@ -7,6 +7,8 @@
  */

#include "ntvdm.h"
+
+#define NDEBUG

BOOLEAN VdmRunning = TRUE;
 LPVOID BaseAddress = NULL;
@@ -57,6 +59,7 @@
     INT i;
     BOOLEAN PrintUsage = TRUE;
     CHAR CommandLine[128];
+    DWORD CurrentTickCount, LastTickCount = 0, Cycles = 0, LastCyclePrintout = 0;
     LARGE_INTEGER Frequency, LastTimerTick, Counter;
     LONGLONG TimerTicks;

@@ -133,7 +136,10 @@
     /* Main loop */
     while (VdmRunning)
     {
-        /* Get the current time */
+        /* Get the current number of ticks */
+        CurrentTickCount = GetTickCount();
+        
+        /* Get the current performance counter value */
         QueryPerformanceCounter(&Counter);

/* Get the number of PIT ticks that have passed */
@@ -144,11 +150,23 @@
         for (i = 0; i < TimerTicks; i++) PitDecrementCount();
         LastTimerTick = Counter;

-        /* Check for console input events */
-        CheckForInputEvents();
+        /* Check for console input events every millisecond */
+        if (CurrentTickCount != LastTickCount)
+        {
+            CheckForInputEvents();
+            LastTickCount = CurrentTickCount;
+        }

/* Continue CPU emulation */
         EmulatorStep();
+        
+        Cycles++;
+        if ((CurrentTickCount - LastCyclePrintout) >= 1000)
+        {
+            DPRINT1("NTVDM: %d Instructions Per Second\n", Cycles);
+            LastCyclePrintout = CurrentTickCount;
+            Cycles = 0;
+        }
     }

Cleanup:

Modified: branches/ntvdm/subsystems/ntvdm/ntvdm.h
URL: http://svn.reactos.org/svn/reactos/branches/ntvdm/subsystems/ntvdm/ntvdm.h?r...
==============================================================================
--- branches/ntvdm/subsystems/ntvdm/ntvdm.h	[iso-8859-1] (original)
+++ branches/ntvdm/subsystems/ntvdm/ntvdm.h	[iso-8859-1] Sat Jun 22 01:41:51 2013
@@ -14,6 +14,7 @@
 #include <conio.h>
 #include <assert.h>
 #include <stdarg.h>
+#include <debug.h>

/* DEFINES ********************************************************************/