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Java example source code file (TestProviderLeak.java)
The TestProviderLeak.java Java example source code/* * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * @test * @bug 6578538 8027624 * @summary com.sun.crypto.provider.SunJCE instance leak using KRB5 and * LoginContext * @author Brad Wetmore * * @run main/othervm -Xmx20m TestProviderLeak * */ /* * We force the leak to become a problem by eating up most JVM free memory. * In current runs on a server and client machine, it took roughly 50-150 * iterations to have the memory leak or time-out shut down other operations. * It complained about "JCE cannot authenticate the provider SunJCE" or timed * out. */ import javax.crypto.*; import javax.crypto.spec.*; import java.util.*; import java.util.concurrent.*; public class TestProviderLeak { private static final int MB = 1024 * 1024; // Currently, 3MB heap size is reserved for running testing iterations. // It is tweaked to make sure the test quickly triggers the memory leak // or throws out TimeoutException. private static final int RESERVATION = 3; // The maximum time, 5 seconds, to wait for each iteration. private static final int TIME_OUT = 5; private static Deque<byte []> eatupMemory() throws Exception { dumpMemoryStats("Before memory allocation"); Deque<byte []> data = new ArrayDeque Other Java examples (source code examples)Here is a short list of links related to this Java TestProviderLeak.java source code file: |
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