[ion] 52816: [KERNEL32]: Get rid of RestoreLastError, it's a forward. [KERNEL32]: SetLastError should only set the error code if it's different from the one already set. This is not about optimizat...

Author: ion
Date: Sat Jul 23 18:48:32 2011
New Revision: 52816

URL: http://svn.reactos.org/svn/reactos?rev=52816&view=rev
Log:
[KERNEL32]: Get rid of RestoreLastError, it's a forward.
[KERNEL32]: SetLastError should only set the error code if it's different from the one
already set. This is not about optimization: it's compatibility with hardware data
breakpoint behavior.

Modified:
    trunk/reactos/dll/win32/kernel32/client/except.c

Modified: trunk/reactos/dll/win32/kernel32/client/except.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/kernel32/client/…
==============================================================================
--- trunk/reactos/dll/win32/kernel32/client/except.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/kernel32/client/except.c [iso-8859-1] Sat Jul 23 18:48:32
2011
@@ -660,20 +660,13 @@
  */
 VOID
 WINAPI
-SetLastError(
-    IN DWORD dwErrCode)
-{
-    if (g_dwLastErrorToBreakOn)
-    {
-        /* If we have error to break on and if current matches, break */
-        if (g_dwLastErrorToBreakOn == dwErrCode)
-        {
-            DbgBreakPoint();
-        }
-    }
-
-    /* Set last error */
-    NtCurrentTeb()->LastErrorValue = dwErrCode;
+SetLastError(IN DWORD dwErrCode)
+{
+    /* Break if a debugger requested checking for this error code */
+    if ((g_dwLastErrorToBreakOn) && (g_dwLastErrorToBreakOn == dwErrCode))
DbgBreakPoint();
+
+    /* Set last error if it's a new error */
+    if (NtCurrentTeb()->LastErrorValue != dwErrCode) NtCurrentTeb()->LastErrorValue
= dwErrCode;
 }
 
 /*
@@ -681,9 +674,9 @@
  */
 VOID
 WINAPI
-BaseSetLastNTError(
-    IN NTSTATUS Status)
-{
+BaseSetLastNTError(IN NTSTATUS Status)
+{
+    /* Convert from NT to Win32, then set */
     SetLastError(RtlNtStatusToDosError(Status));
 }
 
@@ -692,22 +685,10 @@
  */
 DWORD
 WINAPI
-GetLastError()
-{
+GetLastError(VOID)
+{
+    /* Return the current value */
     return NtCurrentTeb()->LastErrorValue;
 }
 
-/*
- * @unimplemented
- */
-VOID
-WINAPI
-RestoreLastError(
-    DWORD dwErrCode
-    )
-{
-    STUB;
-}
-
-
 /* EOF */