1 /*
 2  * Copyright Amazon.com Inc. 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
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23  */
24 
25 /*
26  * @test
27  * @bug 8316694
28  * @summary test that nmethod::relocate() correctly creates a new nmethod
29  * @library /test/lib /
30  * @modules java.base/jdk.internal.misc java.management
31  * @requires vm.opt.DeoptimizeALot != true
32  * @build jdk.test.whitebox.WhiteBox
33  * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
34  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbatch -XX:+SegmentedCodeCache
35  * -XX:+UnlockExperimentalVMOptions -XX:+NMethodRelocation compiler.whitebox.RelocateNMethod
36  */
37 
38 
39 package compiler.whitebox;
40 
41 import java.lang.reflect.Method;
42 import jdk.test.whitebox.code.BlobType;
43 import jdk.test.whitebox.code.NMethod;
44 import jdk.test.whitebox.WhiteBox;
45 
46 import compiler.whitebox.CompilerWhiteBoxTest;
47 
48 public class RelocateNMethod extends CompilerWhiteBoxTest {
49 
50     public static void main(String[] args) throws Exception {
51         CompilerWhiteBoxTest.main(RelocateNMethod::new, new String[] {"CONSTRUCTOR_TEST", "METHOD_TEST", "STATIC_TEST"});
52     }
53 
54     private RelocateNMethod(TestCase testCase) {
55         super(testCase);
56         // to prevent inlining of #method
57         WHITE_BOX.testSetDontInlineMethod(method, true);
58     }
59 
60     @Override
61     protected void test() throws Exception {
62         checkNotCompiled();
63 
64         compile();
65 
66         checkCompiled();
67         NMethod origNmethod = NMethod.get(method, false);
68 
69         WHITE_BOX.relocateNMethodFromMethod(method, BlobType.MethodNonProfiled.id);
70 
71         WHITE_BOX.fullGC();
72 
73         checkCompiled();
74 
75         NMethod newNmethod = NMethod.get(method, false);
76         if (origNmethod.entry_point == newNmethod.entry_point) {
77             throw new RuntimeException("Did not create new nmethod");
78         }
79     }
80 }