* CircularBuffer is now save to use even if the buffer allocation failed. This

fixes bug #3985.
* This happened as ViewHistory::Update() can obviously be called before the
  view is really layouted. Therefore it now restricts the view size to 16384.
* Since the Update() happens in Draw(), it looks like this is actually a problem
  of our layout engine (as the size is computed via BView::Frame()).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30967 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/activitymonitor/ActivityView.cpp

@@ -225,6 +225,11 @@ void
 ViewHistory::Update(DataHistory* history, int32 width, int32 resolution,
 	bigtime_t toTime, bigtime_t step, bigtime_t refresh)
 {
+	if (width > 16384) {
+		// ignore this - it seems the view hasn't been layouted yet
+		return;
+	}
+
 	// Check if we need to invalidate the existing values
 	if ((int32)fValues.Size() != width
 		|| fResolution != resolution