INTEGRATION: CWS presfixes01 (1.1.2); FILE ADDED

2005/02/10 03:16:05 thb 1.1.2.2: #i38960# Better guard windows.h with windows-only...
2005/02/09 21:11:03 thb 1.1.2.1: #i38960# Newly added, for tampering with a thread's scheduling priority (gets temporarily raised when rendering an animation frame)

1 files changed, 103 insertions, 0 deletions

diff --git a/canvas/source/tools/prioritybooster.cxx b/canvas/source/tools/prioritybooster.cxx
new file mode 100644
index 000000000000..41fca730ee30
--- /dev/null
+++ b/canvas/source/tools/prioritybooster.cxx
@@ -0,0 +1,103 @@
+/*************************************************************************
+ *
+ *  $RCSfile: prioritybooster.cxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: vg $ $Date: 2005-03-10 11:56:09 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 by Sun Microsystems, Inc.
+ *  901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License version 2.1, as published by the Free Software Foundation.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public
+ *  License along with this library; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *  MA  02111-1307  USA
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+
+
+#ifdef WNT
+#include <windows.h>
+#endif
+
+#include "osl/diagnose.h"
+#include "canvas/prioritybooster.hxx"
+
+
+namespace canvas
+{
+    namespace tools
+    {
+        struct PriorityBooster_Impl
+        {
+            int mnOldPriority;
+        };
+
+        PriorityBooster::PriorityBooster( sal_Int32 nDelta ) :
+            mpImpl( new PriorityBooster_Impl )
+        {
+#ifdef WNT
+            HANDLE aCurrThread = GetCurrentThread();
+            mpImpl->mnOldPriority = GetThreadPriority( aCurrThread );
+
+            const bool bSuccess( 0 != SetThreadPriority( aCurrThread, mpImpl->mnOldPriority + nDelta ) );
+
+            OSL_ENSURE( bSuccess,
+                        "PriorityBooster::PriorityBooster(): Was not able to modify thread priority" );
+#endif
+        }
+
+        PriorityBooster::~PriorityBooster()
+        {
+#ifdef WNT
+            SetThreadPriority( GetCurrentThread(),
+                               mpImpl->mnOldPriority );
+#endif
+        }
+    } // namespace tools
+
+} // namespace canvas