1 /*
   2  * Copyright (c) 2018, 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 8214583
  27  * @summary Check that getSubject works after JIT compiler escape analysis.
  28  */
  29 import java.security.AccessControlContext;
  30 import java.security.AccessController;
  31 import java.security.PrivilegedAction;
  32 import java.security.PrivilegedExceptionAction;
  33 import java.util.Arrays;
  34 import java.util.Collections;
  35 import java.util.HashSet;
  36 import java.util.Set;
  37 import javax.security.auth.Subject;
  38 
  39 public class DoAs {
  40 
  41     public static void main(String[] args) throws Exception {
  42         final Set<String> outer = new HashSet<>(Arrays.asList("Outer"));
  43         final Subject subject = new Subject(true, Collections.EMPTY_SET, outer, Collections.EMPTY_SET);
  44 
  45         for (int i = 0; i < 100_000; ++i) {
  46             final int index = i;
  47             Subject.doAs(subject, (PrivilegedExceptionAction<Integer>)() -> {
  48                 AccessControlContext c1 = AccessController.getContext();
  49                 Subject s = Subject.getSubject(c1);
  50                 if (s != subject) {
  51                     throw new AssertionError("outer Oops! " + "iteration " + index + " " + s + " != " + subject);
  52                 }
  53                 return 0;
  54             });
  55         }
  56     }
  57 }