[cdt-patch] Check if the selected frame is current before calling 'setCu

["Mikhail Khodjaiants" <mikhailk@xxxxxxx>]

Check if the selected frame is current before calling 'setCurrentStackFrame'.

Index: CThread.java
===================================================================
RCS file: /home/tools/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/model/CThread.java,v
retrieving revision 1.13
diff -u -r1.13 CThread.java
--- CThread.java 10 Oct 2002 16:51:28 -0000 1.13
+++ CThread.java 10 Oct 2002 22:14:55 -0000
@@ -93,7 +93,9 @@
  /**
   * Whether this thread is current.
   */
- private boolean fIsCurrent = false; 
+ private boolean fIsCurrent = false;
+ 
+ private CStackFrame fLastStackFrame = null; 
 
  /**
   * Constructor for CThread.
@@ -826,6 +828,7 @@
  private void handleResumedEvent( ICDIResumedEvent event )
  {
   setRunning( true );
+  setLastStackFrame( null );
   int state = IState.RUNNING;
   int detail = DebugEvent.UNSPECIFIED;
   if ( isCurrent() )
@@ -974,14 +977,18 @@
   */
  public void switchToFrame( IStackFrame frame ) throws DebugException
  {
-  if ( frame == null && !(frame instanceof CStackFrame) )
+  if ( frame == null || !(frame instanceof CStackFrame) || frame.equals( getLastStackFrame() ) )
   {
    return;
   }
 //  ((CDebugTarget)getDebugTarget()).resetRegisters();
   try
   {
-   getCDIThread().setCurrentStackFrame( ((CStackFrame)frame).getCDIStackFrame() );
+   if ( getLastStackFrame() != null )
+   {
+    getCDIThread().setCurrentStackFrame( ((CStackFrame)frame).getCDIStackFrame() );
+   }
+   setLastStackFrame( (CStackFrame)frame );
   }
   catch( CDIException e )
   {
@@ -992,5 +999,15 @@
  private int getRealSourceMode()
  {
   return ((CDebugTarget)getDebugTarget()).getRealSourceMode();
+ }
+ 
+ private void setLastStackFrame( CStackFrame frame )
+ {
+  fLastStackFrame = frame;
+ }
+ 
+ private CStackFrame getLastStackFrame()
+ {
+  return fLastStackFrame;
  }
 }