1 /* 2 * Copyright (c) 1999, 2011, 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 4162583 7054918 27 * @library ../testlibrary 28 * @summary Make sure Provider api implementations are synchronized properly 29 */ 30 31 import java.security.*; 32 33 public class SynchronizedAccess { 34 main(String[] args)35 public static void main(String[] args) throws Exception { 36 ProvidersSnapshot snapshot = ProvidersSnapshot.create(); 37 try { 38 main0(args); 39 } finally { 40 snapshot.restore(); 41 } 42 } 43 main0(String[] args)44 public static void main0(String[] args) throws Exception { 45 AccessorThread[] acc = new AccessorThread[200]; 46 for (int i=0; i < acc.length; i++) 47 acc[i] = new AccessorThread("thread"+i); 48 for (int i=0; i < acc.length; i++) 49 acc[i].start(); 50 } 51 } 52 53 class AccessorThread extends Thread { 54 AccessorThread(String str)55 public AccessorThread(String str) { 56 super(str); 57 } 58 run()59 public void run() { 60 Provider[] provs = new Provider[10]; 61 for (int i=0; i < provs.length; i++) 62 provs[i] = new MyProvider("name"+i, 1, "test"); 63 64 int rounds = 20; 65 while (rounds-- > 0) { 66 try { 67 for (int i=0; i<provs.length; i++) { 68 Security.addProvider(provs[i]); 69 } 70 Signature sig = Signature.getInstance("sigalg"); 71 for (int i=0; i<provs.length; i++) { 72 Security.removeProvider("name"+i); 73 } 74 provs = Security.getProviders(); 75 } catch (NoSuchAlgorithmException nsae) { 76 } 77 78 try { 79 Thread.sleep(5); 80 } catch (InterruptedException ie) { 81 } 82 } // while 83 } 84 } 85 86 class MyProvider extends Provider { MyProvider(String name, double version, String info)87 public MyProvider(String name, double version, String info) { 88 super(name, version, info); 89 put("Signature.sigalg", "sigimpl"); 90 } 91 } 92