[jbosstools-commits] JBoss Tools SVN: r43886 - trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util.

[jbosstools-commits at lists.jboss.org]

Author: scabanovich
Date: 2012-09-20 19:37:49 -0400 (Thu, 20 Sep 2012)
New Revision: 43886

Added:
   trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util/UniquePaths.java
Log:
JBIDE-12479
https://issues.jboss.org/browse/JBIDE-12479
Cache unique Path objects.


Added: trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util/UniquePaths.java
===================================================================
--- trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util/UniquePaths.java	                        (rev 0)
+++ trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util/UniquePaths.java	2012-09-20 23:37:49 UTC (rev 43886)
@@ -0,0 +1,47 @@
+/*******************************************************************************
+  * Copyright (c) 2012 Red Hat, Inc.
+  * Distributed under license by Red Hat, Inc. All rights reserved.
+  * This program is made available under the terms of the
+  * Eclipse Public License v1.0 which accompanies this distribution,
+  * and is available at http://www.eclipse.org/legal/epl-v10.html
+  *
+  * Contributor:
+  *     Red Hat, Inc. - initial API and implementation
+  ******************************************************************************/
+package org.jboss.tools.common.util;
+
+import java.util.Hashtable;
+
+import org.eclipse.core.runtime.IPath;
+
+/**
+ * 
+ * Even a huge workspace contains much less than 100000 paths, whereas even in a middle
+ * workspace with about 10000 paths as much as 250000 instances of Path are kept in various 
+ * caches. 
+ * 
+ * @author Viacheslav Kabanovich
+ *
+ */
+public class UniquePaths {
+	static UniquePaths instance = new UniquePaths();
+	
+	public static UniquePaths getInstance() {
+		return instance;
+	}
+
+	Hashtable<IPath, IPath> paths = new Hashtable<IPath, IPath>();
+
+	private UniquePaths() {}
+
+	public IPath intern(IPath path) {
+		IPath result = paths.get(path);
+		if(result == null) {
+			paths.put(path, path);
+			result = path;
+			if(paths.size() % 100 == 0) System.out.println("--->" + paths.size());
+		}
+		return result;
+	}
+
+}


Property changes on: trunk/common/plugins/org.jboss.tools.common.core/src/org/jboss/tools/common/util/UniquePaths.java
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Added: svn:mime-type
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