1 /*
2 * Copyright (c) 2017, 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 8178870
27 * @summary Redefine class with CFLH twice to test deleting the cached_class_file
28 * @library /test/lib
29 * @modules java.base/jdk.internal.misc
30 * @modules java.compiler
31 * java.instrument
32 * jdk.jartool/sun.tools.jar
33 * @run main RedefineClassHelper
34 * @run main/othervm/native -Xlog:redefine+class+load+exceptions -agentlib:RedefineDoubleDelete -javaagent:redefineagent.jar RedefineDoubleDelete
35 */
36
37 public class RedefineDoubleDelete {
38
39 // Class gets a redefinition error because it adds a data member
40 public static String newB =
41 "class RedefineDoubleDelete$B {" +
42 " int count1 = 0;" +
43 "}";
44
45 public static String newerB =
46 "class RedefineDoubleDelete$B { " +
47 " int faa() { System.out.println(\"baa\"); return 2; }" +
48 "}";
49
50 // The ClassFileLoadHook for this class turns foo into faa and prints out faa.
51 static class B {
52 int faa() { System.out.println("foo"); return 1; }
53 }
54
55 public static void main(String args[]) throws Exception {
56
57 B b = new B();
58 int val = b.faa();
59 if (val != 1) {
60 throw new RuntimeException("return value wrong " + val);
61 }
62
63 // Redefine B twice to get cached_class_file in both B scratch classes
64 try {
65 RedefineClassHelper.redefineClass(B.class, newB);
66 } catch (java.lang.UnsupportedOperationException e) {
67 // this is expected
68 }
69 try {
70 RedefineClassHelper.redefineClass(B.class, newB);
71 } catch (java.lang.UnsupportedOperationException e) {
72 // this is expected
73 }
74
75 // Do a full GC.
76 System.gc();
77
78 // Redefine with a compatible class
79 RedefineClassHelper.redefineClass(B.class, newerB);
80 val = b.faa();
81 if (val != 2) {
82 throw new RuntimeException("return value wrong " + val);
83 }
84
85 // Do another full GC to clean things up.
86 System.gc();
87 }
88 }
|
1 /*
2 * Copyright (c) 2017, 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 8178870 8010319
27 * @summary Redefine class with CFLH twice to test deleting the cached_class_file
28 * @library /test/lib
29 * @modules java.base/jdk.internal.misc
30 * @modules java.compiler
31 * java.instrument
32 * jdk.jartool/sun.tools.jar
33 * @run main RedefineClassHelper
34 * @run main/othervm/native -Xlog:redefine+class+load+exceptions -agentlib:RedefineDoubleDelete -javaagent:redefineagent.jar RedefineDoubleDelete
35 */
36
37 // package access top-level class to avoid problem with RedefineClassHelper
38 // and nested types.
39
40 // The ClassFileLoadHook for this class turns foo into faa and prints out faa.
41 class RedefineDoubleDelete_B {
42 int faa() { System.out.println("foo"); return 1; }
43 }
44
45 public class RedefineDoubleDelete {
46
47 // Class gets a redefinition error because it adds a data member
48 public static String newB =
49 "class RedefineDoubleDelete_B {" +
50 " int count1 = 0;" +
51 "}";
52
53 public static String newerB =
54 "class RedefineDoubleDelete_B { " +
55 " int faa() { System.out.println(\"baa\"); return 2; }" +
56 "}";
57
58 public static void main(String args[]) throws Exception {
59
60 RedefineDoubleDelete_B b = new RedefineDoubleDelete_B();
61 int val = b.faa();
62 if (val != 1) {
63 throw new RuntimeException("return value wrong " + val);
64 }
65
66 // Redefine B twice to get cached_class_file in both B scratch classes
67 try {
68 RedefineClassHelper.redefineClass(RedefineDoubleDelete_B.class, newB);
69 } catch (java.lang.UnsupportedOperationException e) {
70 // this is expected
71 }
72 try {
73 RedefineClassHelper.redefineClass(RedefineDoubleDelete_B.class, newB);
74 } catch (java.lang.UnsupportedOperationException e) {
75 // this is expected
76 }
77
78 // Do a full GC.
79 System.gc();
80
81 // Redefine with a compatible class
82 RedefineClassHelper.redefineClass(RedefineDoubleDelete_B.class, newerB);
83 val = b.faa();
84 if (val != 2) {
85 throw new RuntimeException("return value wrong " + val);
86 }
87
88 // Do another full GC to clean things up.
89 System.gc();
90 }
91 }
|