[ion] 24961: - Test for High-Precision Timer (QueryPeformanceCounter). Verifies everything from the Win32 implementation to system call speed to HAL timer accuracy and functionality. Currently fails.

Author: ion
Date: Wed Nov 29 10:31:25 2006
New Revision: 24961

URL: http://svn.reactos.org/svn/reactos?rev=24961&view=rev
Log:
- Test for High-Precision Timer (QueryPeformanceCounter). Verifies everything from the
Win32 implementation to system call speed to HAL timer accuracy and functionality.
Currently fails.

Added:
    trunk/reactos/ntoskrnl/tests/TestTimer.c

Added: trunk/reactos/ntoskrnl/tests/TestTimer.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/tests/TestTimer.c…
==============================================================================
--- trunk/reactos/ntoskrnl/tests/TestTimer.c (added)
+++ trunk/reactos/ntoskrnl/tests/TestTimer.c Wed Nov 29 10:31:25 2006
@@ -1,0 +1,37 @@
+#include <stdio.h>
+#include <conio.h>
+#include <windows.h>
+
+void main ( int argc, char** argv, char** environ )
+{
+ LARGE_INTEGER liFrequency;
+ LARGE_INTEGER liStartTime;
+ LARGE_INTEGER liCurrentTime;
+
+ QueryPerformanceFrequency ( &liFrequency );
+ printf ( "HIGH RESOLUTION PERFOMANCE COUNTER Frequency = %I64d CLOCKS IN
SECOND\n",
+	     liFrequency.QuadPart );
+
+ 
+ if (liFrequency.QuadPart == 0)
+ {
+	printf("Your computer does not support High Resolution Performance
counter\n");
+	return;
+ }
+
+ printf ( "Press <ENTER> to start test...\n" );
+ getchar();
+
+ printf ( "\nPress any key to quit test\n\n" );
+ QueryPerformanceCounter ( &liStartTime );
+ for (;;)
+ {
+	QueryPerformanceCounter ( &liCurrentTime );
+	printf("Elapsed Time : %8.6f mSec\r",
+          ((double)( (liCurrentTime.QuadPart - liStartTime.QuadPart)*
(double)1000.0/(double)liFrequency.QuadPart )) );
+	if (_kbhit())
+		break;
+ }
+
+
+}