1 files changed, 96 insertions, 0 deletions
diff --git a/framework/inc/helper/shareablemutex.hxx b/framework/inc/helper/shareablemutex.hxx
new file mode 100644
index 000000000000..1d323551b841
--- /dev/null
+++ b/framework/inc/helper/shareablemutex.hxx
@@ -0,0 +1,96 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_
+#define __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_
+
+#include <osl/interlck.h>
+#include <osl/mutex.hxx>
+#include <fwidllapi.h>
+
+namespace framework
+{
+
+class FWI_DLLPUBLIC ShareableMutex
+{
+    public:
+        ShareableMutex();
+        ShareableMutex( const ShareableMutex& rShareableMutex );
+        const ShareableMutex& operator=( const ShareableMutex& rShareableMutex );
+
+        ~ShareableMutex();
+
+        void acquire();
+        void release();
+        ::osl::Mutex& getShareableOslMutex();
+
+    private:
+        struct MutexRef
+        {
+            MutexRef() : m_refCount(0) {}
+            void acquire()
+            {
+                osl_incrementInterlockedCount( &m_refCount );
+            }
+
+            void release()
+            {
+                if ( osl_decrementInterlockedCount( &m_refCount ) == 0 )
+                    delete this;
+            }
+
+            oslInterlockedCount m_refCount;
+            osl::Mutex          m_oslMutex;
+        };
+
+        MutexRef* pMutexRef;
+};
+
+class ShareGuard
+{
+    public:
+        ShareGuard( ShareableMutex& rShareMutex ) :
+            m_rShareMutex( rShareMutex )
+        {
+            m_rShareMutex.acquire();
+        }
+
+        ~ShareGuard()
+        {
+            m_rShareMutex.release();
+        }
+
+    private:
+        ShareGuard();
+        ShareGuard& operator=( const ShareGuard& );
+
+        ShareableMutex& m_rShareMutex;
+};
+
+}
+
+#endif // #ifndef __FRAMEWORK_HELPER_SHAREABLEMUTEX_HXX_