1 /* 2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6578538 27 * @summary com.sun.crypto.provider.SunJCE instance leak using KRB5 and 28 * LoginContext 29 * @author Brad Wetmore 30 * 31 * @run main/othervm -Xmx2m -XX:OldSize=1m -XX:NewSize=512k TestProviderLeak 32 * 33 * The original test invocation is below, but had to use the above 34 * workaround for bug 6923123. 35 * 36 * run main/othervm -Xmx2m TestProviderLeak 37 */ 38 39 /* 40 * We force the leak to become a problem by specifying the minimum 41 * size heap we can (above). In current runs on a server and client 42 * machine, it took roughly 220-240 iterations to have the memory leak 43 * shut down other operations. It complained about "Unable to verify 44 * the SunJCE provider." 45 */ 46 47 import javax.crypto.*; 48 import javax.crypto.spec.*; 49 50 public class TestProviderLeak { 51 private static void dumpMemoryStats(String s) throws Exception { 52 Runtime rt = Runtime.getRuntime(); 53 System.out.println(s + ":\t" + 54 rt.freeMemory() + " bytes free"); 55 } 56 57 public static void main(String [] args) throws Exception { 58 SecretKeyFactory skf = 59 SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1", "SunJCE"); 60 PBEKeySpec pbeKS = new PBEKeySpec( 61 "passPhrase".toCharArray(), new byte [] { 0 }, 5, 512); 62 for (int i = 0; i <= 1000; i++) { 63 try { 64 skf.generateSecret(pbeKS); 65 if ((i % 20) == 0) { 66 // Calling gc() isn't dependable, but doesn't hurt. 67 // Gives better output in leak cases. 68 System.gc(); 69 dumpMemoryStats("Iteration " + i); 70 } 71 } catch (Exception e) { 72 dumpMemoryStats("\nException seen at iteration " + i); 73 throw e; 74 } 75 } 76 } 77 }