[hbelusca] 59790: [NTOSKRNL] - Move NtQueryTimerResolution and NtSetTimerResolution from ke/clock.c to their proper place in ex/time.c - Simplify NtQueryTimerResolution and implement NtSetTimerReso...

Author: hbelusca
Date: Wed Aug 21 16:54:19 2013
New Revision: 59790

URL: http://svn.reactos.org/svn/reactos?rev=59790&view=rev
Log:
[NTOSKRNL]
- Move NtQueryTimerResolution and NtSetTimerResolution from ke/clock.c to their proper
place in ex/time.c
- Simplify NtQueryTimerResolution and implement NtSetTimerResolution based on the patch of
Aleksandar Andrejevic.
CORE-7387 #resolve #comment NtSetTimerResolution function committed in revision 59790,
thanks :D

Modified:
    trunk/reactos/ntoskrnl/ex/time.c
    trunk/reactos/ntoskrnl/ke/clock.c

Modified: trunk/reactos/ntoskrnl/ex/time.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ex/time.c?rev=597…
==============================================================================
--- trunk/reactos/ntoskrnl/ex/time.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ex/time.c	[iso-8859-1] Wed Aug 21 16:54:19 2013
@@ -48,9 +48,7 @@
  *--*/
 BOOLEAN
 NTAPI
-ExAcquireTimeRefreshLock(
-    IN BOOLEAN Wait
-    )
+ExAcquireTimeRefreshLock(IN BOOLEAN Wait)
 {
     /* Block APCs */
     KeEnterCriticalRegion();
@@ -82,9 +80,7 @@
  *--*/
 VOID
 NTAPI
-ExReleaseTimeRefreshLock(
-    VOID
-    )
+ExReleaseTimeRefreshLock(VOID)
 {
     /* Release the lock and re-enable APCs */
     ExReleaseResourceLite(&ExpTimeRefreshLock);
@@ -478,4 +474,92 @@
     LocalTime->QuadPart = SystemTime->QuadPart - ExpTimeZoneBias.QuadPart;
 }
 
+/*
+ * @implemented
+ */
+NTSTATUS
+NTAPI
+NtQueryTimerResolution(OUT PULONG MinimumResolution,
+                       OUT PULONG MaximumResolution,
+                       OUT PULONG ActualResolution)
+{
+    KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+
+    /* Check if the call came from user mode */
+    if (PreviousMode != KernelMode)
+    {
+        _SEH2_TRY
+        {
+            /* Probe the parameters */
+            ProbeForWriteUlong(MinimumResolution);
+            ProbeForWriteUlong(MaximumResolution);
+            ProbeForWriteUlong(ActualResolution);
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            /* Return the exception code */
+            _SEH2_YIELD(return _SEH2_GetExceptionCode());
+        }
+        _SEH2_END;
+    }
+
+    /*
+     * Set the parameters to the actual values.
+     *
+     * NOTE:
+     * MinimumResolution corresponds to the biggest time increment and
+     * MaximumResolution corresponds to the smallest time increment.
+     */
+    *MinimumResolution = KeMaximumIncrement;
+    *MaximumResolution = KeMinimumIncrement;
+    *ActualResolution  = KeTimeIncrement;
+
+    /* Return success */
+    return STATUS_SUCCESS;
+}
+
+/*
+ * @implemented
+ */
+NTSTATUS
+NTAPI
+NtSetTimerResolution(IN ULONG DesiredResolution,
+                     IN BOOLEAN SetResolution,
+                     OUT PULONG CurrentResolution)
+{
+    KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
+    PEPROCESS Process = PsGetCurrentProcess();
+    ULONG NewResolution;
+
+    /* Check if the call came from user mode */
+    if (PreviousMode != KernelMode)
+    {
+        _SEH2_TRY
+        {
+            /* Probe the parameter */
+            ProbeForWriteUlong(CurrentResolution);
+        }
+        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
+        {
+            /* Return the exception code */
+            _SEH2_YIELD(return _SEH2_GetExceptionCode());
+        }
+        _SEH2_END;
+    }
+
+    /* Set and return the new resolution */
+    NewResolution = ExSetTimerResolution(DesiredResolution, SetResolution);
+    *CurrentResolution = NewResolution;
+
+    if (SetResolution)
+    {
+        /* Set the flag that the resolution has been changed */
+        Process->SetTimerResolution = TRUE;
+    }
+
+    /* Return success if the process changed its timer resolution */
+    if (Process->SetTimerResolution) return STATUS_SUCCESS;
+    else return STATUS_TIMER_RESOLUTION_NOT_SET;
+}
+
 /* EOF */

Modified: trunk/reactos/ntoskrnl/ke/clock.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/ke/clock.c?rev=59…
==============================================================================
--- trunk/reactos/ntoskrnl/ke/clock.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/ke/clock.c	[iso-8859-1] Wed Aug 21 16:54:19 2013
@@ -236,56 +236,4 @@
     KiTickOffset = MaxIncrement;
 }
 
-NTSTATUS
-NTAPI
-NtQueryTimerResolution(OUT PULONG MinimumResolution,
-                       OUT PULONG MaximumResolution,
-                       OUT PULONG ActualResolution)
-{
-    KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
-
-    /* Check if the call came from user mode */
-    if (PreviousMode != KernelMode)
-    {
-        _SEH2_TRY
-        {
-            /* Probe the parameters */
-            ProbeForWriteUlong(MinimumResolution);
-            ProbeForWriteUlong(MaximumResolution);
-            ProbeForWriteUlong(ActualResolution);
-
-            /* Try to set the parameters to the actual values */
-            *MinimumResolution = KeMinimumIncrement;
-            *MaximumResolution = KeMaximumIncrement;
-            *ActualResolution = KeTimeIncrement;
-        }
-        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
-        {
-            /* Return the exception code */
-            _SEH2_YIELD(return _SEH2_GetExceptionCode());
-        }
-        _SEH2_END;
-    }
-    else
-    {
-        /* The call came from kernel mode. Use the pointers directly */
-        *MinimumResolution = KeMinimumIncrement;
-        *MaximumResolution = KeMaximumIncrement;
-        *ActualResolution = KeTimeIncrement;
-    }
-
-    /* Return success */
-    return STATUS_SUCCESS;
-}
-
-NTSTATUS
-NTAPI
-NtSetTimerResolution(IN ULONG DesiredResolution,
-                     IN BOOLEAN SetResolution,
-                     OUT PULONG CurrentResolution)
-{
-    UNIMPLEMENTED;
-    return STATUS_NOT_IMPLEMENTED;
-}
-
 /* EOF */