78 lines
2.8 KiB
Java
78 lines
2.8 KiB
Java
/*
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6578538
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* @summary com.sun.crypto.provider.SunJCE instance leak using KRB5 and
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* LoginContext
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* @author Brad Wetmore
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*
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* @run main/othervm -Xmx2m -XX:OldSize=1m -XX:NewSize=512k TestProviderLeak
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*
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* The original test invocation is below, but had to use the above
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* workaround for bug 6923123.
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*
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* run main/othervm -Xmx2m TestProviderLeak
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*/
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/*
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* We force the leak to become a problem by specifying the minimum
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* size heap we can (above). In current runs on a server and client
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* machine, it took roughly 220-240 iterations to have the memory leak
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* shut down other operations. It complained about "Unable to verify
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* the SunJCE provider."
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*/
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import javax.crypto.*;
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import javax.crypto.spec.*;
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public class TestProviderLeak {
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private static void dumpMemoryStats(String s) throws Exception {
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Runtime rt = Runtime.getRuntime();
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System.out.println(s + ":\t" +
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rt.freeMemory() + " bytes free");
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}
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public static void main(String [] args) throws Exception {
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SecretKeyFactory skf =
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SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1", "SunJCE");
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PBEKeySpec pbeKS = new PBEKeySpec(
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"passPhrase".toCharArray(), new byte [] { 0 }, 5, 512);
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for (int i = 0; i <= 1000; i++) {
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try {
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skf.generateSecret(pbeKS);
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if ((i % 20) == 0) {
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// Calling gc() isn't dependable, but doesn't hurt.
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// Gives better output in leak cases.
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System.gc();
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dumpMemoryStats("Iteration " + i);
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}
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} catch (Exception e) {
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dumpMemoryStats("\nException seen at iteration " + i);
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throw e;
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}
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}
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}
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}
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