Move source into separate sub directories.

persistent-data/block_counter.h

@@ -0,0 +1,59 @@
+// Copyright (C) 2011 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools 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 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools 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 thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef BLOCK_COUNTER_H
+#define BLOCK_COUNTER_H
+
+#include "block.h"
+
+//----------------------------------------------------------------
+
+namespace persistent_data {
+	//----------------------------------------------------------------
+	// Little helper class that keeps track of how many times blocks
+	// are referenced.
+	//----------------------------------------------------------------
+	class block_counter {
+	public:
+		typedef std::map<block_address, unsigned> count_map;
+
+		void inc(block_address b) {
+			count_map::iterator it = counts_.find(b);
+			if (it == counts_.end())
+				counts_.insert(make_pair(b, 1));
+			else
+				it->second++;
+		}
+
+		unsigned get_count(block_address b) const {
+			count_map::const_iterator it = counts_.find(b);
+			return (it == counts_.end()) ? 0 : it->second;
+		}
+
+		count_map const &get_counts() const {
+			return counts_;
+		}
+
+	private:
+		count_map counts_;
+	};
+}
+
+//----------------------------------------------------------------
+
+#endif