[aandrejevic] 59299: [NTOSKRNL] Implement NtSetTimerResolution.

Author: aandrejevic
Date: Sun Jun 23 00:47:47 2013
New Revision: 59299

URL: http://svn.reactos.org/svn/reactos?rev=59299&view=rev
Log:
[NTOSKRNL]
Implement NtSetTimerResolution.


Modified:
    branches/ntvdm/ntoskrnl/ke/clock.c

Modified: branches/ntvdm/ntoskrnl/ke/clock.c
URL:
http://svn.reactos.org/svn/reactos/branches/ntvdm/ntoskrnl/ke/clock.c?rev=5…
==============================================================================
--- branches/ntvdm/ntoskrnl/ke/clock.c	[iso-8859-1] (original)
+++ branches/ntvdm/ntoskrnl/ke/clock.c	[iso-8859-1] Sun Jun 23 00:47:47 2013
@@ -252,8 +252,26 @@
                      IN BOOLEAN SetResolution,
                      OUT PULONG CurrentResolution)
 {
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
+    ULONG NewResolution;
+
+    /* Call the internal API */
+    NewResolution = ExSetTimerResolution(DesiredResolution, SetResolution);
+
+    /* Return the resolution to the caller */
+    _SEH2_TRY
+    {
+        ProbeForWriteUlong(CurrentResolution);
+        *CurrentResolution = NewResolution;
+    }
+    _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+    {
+        _SEH2_YIELD(return _SEH2_GetExceptionCode());
+    }
+    _SEH2_END;
+    
+    /* Return success if we set the resolution */
+    if (SetResolution) return STATUS_SUCCESS;
+    else return STATUS_TIMER_RESOLUTION_NOT_SET;
 }
 
 /* EOF */