1 files changed, 61 insertions, 0 deletions
diff --git a/libs/pbd3/pbd/rcpointer.h b/libs/pbd3/pbd/rcpointer.h
new file mode 100644
index 0000000000..c634208437
--- /dev/null
+++ b/libs/pbd3/pbd/rcpointer.h
@@ -0,0 +1,61 @@
+/*
+    Copyright (C) 1998-99 Paul Barton-Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+    $Id$
+*/
+
+#ifndef __qm_rcpointer_h__
+#define __qm_rcpointer_h__
+
+template<class T> class RCPointer {
+  public:
+	T *operator->() { return _ptr; }
+	bool operator==(T *p) { return _ptr == p; }
+	bool operator!=(T *p) { return _ptr != p; }
+
+	int refcount() { return _ptr->count; }
+
+	RCPointer () { _ptr = 0; }
+
+	RCPointer (T *p) : _ptr (p) { 
+		if (_ptr) _ptr->count++;
+	}
+
+	RCPointer (const RCPointer& r) : _ptr (r._ptr) {
+		if (_ptr) _ptr->count++;
+	}
+
+	RCPointer &operator= (const RCPointer &r) {
+		if (_ptr == r._ptr) return *this;
+		if (_ptr && --_ptr->count == 0) {
+			delete _ptr;
+		}
+		_ptr = r._ptr;
+		if (_ptr) _ptr->count++;
+		return *this;
+	}
+	~RCPointer () { 
+		if (_ptr && --_ptr->count == 0) {
+			delete _ptr;
+		}
+	}
+
+  private:
+	T *_ptr;
+};
+
+#endif  // __qm_rcpointer_h__