Call Yield() to unblock the main thread when refreshing.

Also, we don't seem to need this solar mutex locking and checking for
needs repaint flag here anymore, and not having these make the streaming
much faster esp on Windows.

Change-Id: I6e8ae82e5d986492ac576d28f11e2afffe954bc2
(cherry picked from commit c3bd435387ffbc6ae3c5a4861ac419d0a7092807)

1 files changed, 2 insertions, 9 deletions

diff --git a/sc/source/ui/docshell/datastream.cxx b/sc/source/ui/docshell/datastream.cxx
index 931395d5615c..8f78c9c7386a 100644
--- a/sc/source/ui/docshell/datastream.cxx
+++ b/sc/source/ui/docshell/datastream.cxx
@@ -65,15 +65,11 @@ private:
     {
         while (!mbTerminate)
         {
-            // wait for a small amount of time, so that
-            // painting methods have a chance to be called.
-            // And also to make UI more responsive.
-            TimeValue const aTime = {0, 100000};
             maStart.wait();
             maStart.reset();
             if (!mbTerminate)
                 while (mpDataStream->ImportData())
-                    wait(aTime);
+                    ;
         };
     }
 };
@@ -352,6 +348,7 @@ void DataStream::SetRefreshOnEmptyLine( bool bVal )
 void DataStream::Refresh()
 {
     // Hard recalc will repaint the grid area.
+    Application::Yield();
     mpDocShell->DoHardRecalc(true);
     mpDocShell->SetDocumentModified(true);
 
@@ -512,14 +509,10 @@ void DataStream::Text2Doc() {}
 
 bool DataStream::ImportData()
 {
-    SolarMutexGuard aGuard;
     if (!mbValuesInLine)
         // We no longer support this mode. To be deleted later.
         return false;
 
-    if (ScDocShell::GetViewData()->GetViewShell()->NeedsRepaint())
-        return mbRunning;
-
     Text2Doc();
     return mbRunning;
 }