[hornetq-commits] JBoss hornetq SVN: r8489 - in trunk/tests/src/org/hornetq/tests/unit/util: sizeof and 1 other directory.

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Author: clebert.suconic at jboss.com
Date: 2009-12-02 00:04:05 -0500 (Wed, 02 Dec 2009)
New Revision: 8489

Added:
   trunk/tests/src/org/hornetq/tests/unit/util/sizeof/
   trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ObjectSizeOf.java
   trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ServerMessageSizeOf.java
   trunk/tests/src/org/hornetq/tests/unit/util/sizeof/SizeOfBase.java
Log:
Adding sizeof tests (first commit)

Added: trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ObjectSizeOf.java
===================================================================
--- trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ObjectSizeOf.java	                        (rev 0)
+++ trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ObjectSizeOf.java	2009-12-02 05:04:05 UTC (rev 8489)
@@ -0,0 +1,34 @@
+/*
+ * Copyright 2009 Red Hat, Inc.
+ * Red Hat licenses this file to you under the Apache License, version
+ * 2.0 (the "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package org.hornetq.tests.unit.util.sizeof;
+
+/**
+ * Calculate the size of objects on the heap
+ * based on this article:
+ * http://www.javaworld.com/javaworld/javatips/jw-javatip130.html
+ *
+ * @author <mailto:clebert.suconic at jboss.org">Clebert Suconic</a>
+ *
+ *
+ */
+public class ObjectSizeOf extends SizeOfBase
+{
+
+   @Override
+   protected Object newObject()
+   {
+      return new Object();
+   }
+
+}

Added: trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ServerMessageSizeOf.java
===================================================================
--- trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ServerMessageSizeOf.java	                        (rev 0)
+++ trunk/tests/src/org/hornetq/tests/unit/util/sizeof/ServerMessageSizeOf.java	2009-12-02 05:04:05 UTC (rev 8489)
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2009 Red Hat, Inc.
+ * Red Hat licenses this file to you under the Apache License, version
+ * 2.0 (the "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package org.hornetq.tests.unit.util.sizeof;
+
+import org.hornetq.core.server.impl.ServerMessageImpl;
+
+/**
+ * A ServerMessageSizeOf
+ *
+ * @author <mailto:clebert.suconic at jboss.org">Clebert Suconic</a>
+ *
+ *
+ */
+public class ServerMessageSizeOf extends SizeOfBase
+{
+
+   @Override
+   protected Object newObject()
+   {
+      return new ServerMessageImpl(1, 2000);
+   }
+
+   // Constants -----------------------------------------------------
+
+   // Attributes ----------------------------------------------------
+
+   // Static --------------------------------------------------------
+
+   // Constructors --------------------------------------------------
+
+   // Public --------------------------------------------------------
+
+   // Package protected ---------------------------------------------
+
+   // Protected -----------------------------------------------------
+
+   // Private -------------------------------------------------------
+
+   // Inner classes -------------------------------------------------
+
+}

Added: trunk/tests/src/org/hornetq/tests/unit/util/sizeof/SizeOfBase.java
===================================================================
--- trunk/tests/src/org/hornetq/tests/unit/util/sizeof/SizeOfBase.java	                        (rev 0)
+++ trunk/tests/src/org/hornetq/tests/unit/util/sizeof/SizeOfBase.java	2009-12-02 05:04:05 UTC (rev 8489)
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2009 Red Hat, Inc.
+ * Red Hat licenses this file to you under the Apache License, version
+ * 2.0 (the "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.  See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package org.hornetq.tests.unit.util.sizeof;
+
+import org.hornetq.tests.util.UnitTestCase;
+
+/**
+ * A Base class for tests that are calculating size of objects
+ *
+ * @author <mailto:clebert.suconic at jboss.org">Clebert Suconic</a>
+ *
+ *
+ */
+public abstract class SizeOfBase extends UnitTestCase
+{
+
+   // Constants -----------------------------------------------------
+
+   // Attributes ----------------------------------------------------
+
+   // Static --------------------------------------------------------
+
+   // Constructors --------------------------------------------------
+
+   // Public --------------------------------------------------------
+
+   private final Runtime runtime = Runtime.getRuntime();
+
+   private static final int numberOfObjects = 10000;
+
+   public void testCalculateSize()
+   {
+      getMemorySize();
+      newObject();
+      
+      int i = 0;
+      long heap1 = 0;
+      long heap2 = 0;
+      long totalMemory1 = 0;
+      long totalMemory2 = 0;
+
+
+      final Object obj[] = new Object[numberOfObjects];
+      // make sure we load the classes before
+
+      heap1 = getMemorySize();
+
+      totalMemory1 = runtime.totalMemory();
+
+      for (i = 0; i < numberOfObjects; i++)
+      {
+         obj[i] = newObject();
+      }
+
+      heap2 = getMemorySize();
+
+      totalMemory2 = runtime.totalMemory();
+
+      final int size = Math.round(((float)(heap2 - heap1)) / numberOfObjects);
+
+      if (totalMemory1 != totalMemory2)
+      {
+         System.out.println("Warning: JVM allocated more data what would make results invalid");
+      }
+
+      System.out.println("heap1 = " + heap1 + ", heap2 = " + heap2 + ", size = " + size);
+
+   }
+
+   private long getMemorySize()
+   {
+      for (int i = 0; i < 5; i++)
+      {
+         forceGC();
+      }
+      return runtime.totalMemory() - runtime.freeMemory();
+   }
+
+   protected abstract Object newObject();
+
+   // Package protected ---------------------------------------------
+
+   // Protected -----------------------------------------------------
+
+   // Private -------------------------------------------------------
+
+   // Inner classes -------------------------------------------------
+
+}