INTEGRATION: CWS presfixes08 (1.1.2); FILE ADDED

2005/09/05 12:41:43 dbo 1.1.2.2: #i51786# new license header
2005/09/01 09:07:38 dbo 1.1.2.1: #i51786# new

1 files changed, 83 insertions, 0 deletions

diff --git a/comphelper/inc/comphelper/make_shared_from_uno.hxx b/comphelper/inc/comphelper/make_shared_from_uno.hxx
new file mode 100644
index 000000000000..0850f3fb2cb2
--- /dev/null
+++ b/comphelper/inc/comphelper/make_shared_from_uno.hxx
@@ -0,0 +1,83 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: make_shared_from_uno.hxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: obo $ $Date: 2005-10-11 08:57:23 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 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
+ *
+ ************************************************************************/
+#if ! defined(INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX)
+#define INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX
+
+#include "boost/shared_ptr.hpp"
+#include <functional>
+
+namespace comphelper {
+
+/// @internal
+namespace detail {
+/// @internal
+template <typename T> struct ReleaseFunc : ::std::unary_function<T *, void> {
+    void operator()( T * p ) const { p->release(); }
+};
+} // namespace detail
+
+/** Makes a boost::shared_ptr from a ref-counted UNO object pointer.
+    This makes sense if the object is used via UNO (implementing some X
+    interface) and also internally using its implementation class, e.g.
+
+    <pre>
+        boost::shared_ptr<MyUnoImpl> const ptr(
+            comphelper::make_shared_from_UNO( new MyUnoImpl ) );
+        ...
+        xUno->callingUno( uno::Reference<XSomeInterface>( ptr.get() ) );
+        ...
+        takeSharedPtr( ptr );
+        ...
+    </pre>
+
+    @attention The shared_ptr operates on a separate reference counter, so
+               weak pointers (boost::weak_ptr) are invalidated when the last
+               shared_ptr is destroyed, although the UNO object may still be
+               alive.
+
+    @param p object pointer
+    @return shared_ptr to object
+*/
+template <typename T>
+inline ::boost::shared_ptr<T> make_shared_from_UNO( T * p )
+{
+    p->acquire();
+    return ::boost::shared_ptr<T>( p, detail::ReleaseFunc<T>() );
+}
+
+} // namespace comphelper
+
+#endif // ! defined(INCLUDED_COMPHELPER_MAKE_SHARED_FROM_UNO_HXX)
+