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 }