the begginning

versioning/BRM/rgnode.h

@@ -0,0 +1,75 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   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; version 2 of
+   the License.
+
+   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., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/******************************************************************************
+ * $Id: rgnode.h 1823 2013-01-21 14:13:09Z rdempsey $
+ *
+ *****************************************************************************/
+
+/** @file 
+ * class RGNode interface.  This is a base class for the nodes in the resource graph.
+ */
+
+#ifndef RGNODE_H_
+#define RGNODE_H_
+
+#include <set>
+
+#include "brmtypes.h"
+
+#if defined(_MSC_VER) && defined(xxxRGNODE_DLLEXPORT)
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+namespace BRM {
+
+class RGNode;
+
+class RGNode {
+	public:
+		EXPORT RGNode();
+		EXPORT RGNode(const RGNode &);
+		EXPORT virtual ~RGNode();
+
+		EXPORT RGNode& operator=(const RGNode &);
+
+		EXPORT uint64_t color() const;
+		EXPORT void color(uint64_t);
+		EXPORT void addOutEdge(RGNode *);
+		EXPORT void addInEdge(RGNode *);
+		EXPORT void removeOutEdge(RGNode *);
+		EXPORT void removeInEdge(RGNode *);
+
+		friend class LBIDResourceGraph;
+
+	protected:
+		// adjacency lists.  Technically these should be private, but ResourceNode
+		// currently uses them to wake connected transactions.  TBD...
+		std::set<RGNode *> out;
+		std::set<RGNode *> in;
+
+	private:
+		uint64_t _color;
+};
+
+}
+
+#undef EXPORT
+
+#endif