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 8046171
27 * @summary Test JNI access to private fields between nestmates and nest-host
28 * using different flavours of named nested types
29 * @compile ../NestmatesJNI.java
30 * @run main/othervm/native TestJNI
31 * @run main/othervm/native -Xcheck:jni TestJNI
32 */
33 public class TestJNI {
34
35 // Private field of nest-host for nestmates to access
36 private int priv_field;
37
38 static final String FIELD = "priv_field";
39
40 // public constructor so we aren't relying on private access
41 public TestJNI() {}
42
43 // Methods that will access private fields of nestmates
44
45 // NOTE: No StaticIface variants as interfaces can't have instance fields
46
47 void access_priv(TestJNI o) {
48 this.priv_field = getAndInc(o, o.getClass(), FIELD);
49 }
50 void access_priv(InnerNested o) {
51 this.priv_field = getAndInc(o, o.getClass(), FIELD);
52 }
53 void access_priv(StaticNested o) {
54 this.priv_field = getAndInc(o, o.getClass(), FIELD);
55 }
56
57 // The various nestmates
58
59 static interface StaticIface {
60
61 // Methods that will access private fields of nestmates
62
63 default void access_priv(TestJNI o) {
64 int priv_field = getAndInc(o, o.getClass(), FIELD);
65 }
66 default void access_priv(InnerNested o) {
67 int priv_field = getAndInc(o, o.getClass(), FIELD);
68 }
69 default void access_priv(StaticNested o) {
70 int priv_field = getAndInc(o, o.getClass(), FIELD);
71 }
72 }
73
74 static class StaticNested {
75
76 private int priv_field;
77
78 // public constructor so we aren't relying on private access
79 public StaticNested() {}
80
81 // Methods that will access private fields of nestmates
82
83 void access_priv(TestJNI o) {
84 this.priv_field = getAndInc(o, o.getClass(), FIELD);
85 }
86 void access_priv(InnerNested o) {
87 this.priv_field = getAndInc(o, o.getClass(), FIELD);
88 }
89 void access_priv(StaticNested o) {
90 this.priv_field = getAndInc(o, o.getClass(), FIELD);
91 }
92 }
93
94 class InnerNested {
95
96 private int priv_field;
97
98 // public constructor so we aren't relying on private access
99 public InnerNested() {}
100
101 void access_priv(TestJNI o) {
102 this.priv_field = getAndInc(o, o.getClass(), FIELD);
103 }
104 void access_priv(InnerNested o) {
105 this.priv_field = getAndInc(o, o.getClass(), FIELD);
106 }
107 void access_priv(StaticNested o) {
108 this.priv_field = getAndInc(o, o.getClass(), FIELD);
109 }
110 }
111
112 public static void main(String[] args) {
113 TestJNI o = new TestJNI();
114 StaticNested s = new StaticNested();
115 InnerNested i = o.new InnerNested();
116 StaticIface intf = new StaticIface() {};
117
118 o.access_priv(new TestJNI());
119 o.access_priv(i);
120 o.access_priv(s);
121
122 s.access_priv(o);
123 s.access_priv(i);
124 s.access_priv(new StaticNested());
125
126 i.access_priv(o);
127 i.access_priv(o.new InnerNested());
128 i.access_priv(s);
129
130 intf.access_priv(o);
131 intf.access_priv(i);
132 intf.access_priv(s);
133 }
134
135 static int getAndInc(Object target, Class<?> klass, String field) {
136 String definingClass = klass.getName();
137 String desc = "Access to field " +
138 definingClass + "." + field + " on instance of class " +
139 target.getClass().getName();
140 int first, second;
141 try {
142 first = NestmatesJNI.getIntField(target, definingClass, field);
143 NestmatesJNI.setIntField(target, definingClass, field, (first + 1));
144 second = NestmatesJNI.getIntField(target, definingClass, field);
145 }
146 catch (Throwable t) {
147 throw new Error(desc + ": Unexpected exception: " + t, t);
148 }
149 if (second != first + 1) {
150 throw new Error(desc + ": wrong field values: first=" + first +
151 ", second=" + second + " (should equal first+1)");
152 }
153 System.out.println(desc + " - passed");
154 return first;
155 }
156 }