2362N/A * Copyright (c) 2006, 2008, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 0N/A * published by the Free Software Foundation. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * @summary Test that creating MXBeans does not introduce memory leaks. 0N/A * @author Eamonn McManus 469N/A * @run build LeakTest RandomMXBeanTest 0N/A * @run main LeakTest 0N/A/* In this test we create a ClassLoader, then use it to load and run another 0N/A * jtreg test. When the other test has completed, we wait for the ClassLoader 0N/A * to be garbage-collected. If it has not been gc'd after a reasonable 0N/A * amount of time, then something is keeping a reference to the ClassLoader, 0N/A * which implies a memory leak. 0N/A * This test can be applied to any jtreg test, not just the MXBean tests. 0N/A /* Ideally we would include MXBeanTest in the list of tests, since it 0N/A * has fairly complete coverage. However, the ClassLoader fails to be 0N/A * gc'd when we do that, and I am unable to figure out why. Examining 0N/A * a heap dump shows only weak references to the ClassLoader. I suspect 0N/A * something is wrong in the internals of the reflection classes, used 0N/A * quite heavily by MXBeanTest. 0N/A// private static Class<?>[] otherTests = {MXBeanTest.class}; 0N/A // This class just makes it easier for us to spot our loader in heap dumps 0N/A "by caches in the MXBean infrastructure");