GetNMethodTest.java revision 6781:7f6b21a3beb0 
1/*
2 * Copyright (c) 2014, 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
25import sun.hotspot.code.NMethod;
26
27/*
28 * @test GetNMethodTest
29 * @bug 8038240
30 * @library /testlibrary /testlibrary/whitebox
31 * @ignore 8046268
32 * @build GetNMethodTest
33 * @run main ClassFileInstaller sun.hotspot.WhiteBox
34 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* GetNMethodTest
35 * @summary testing of WB::getNMethod()
36 * @author igor.ignatyev@oracle.com
37 */
38public class GetNMethodTest extends CompilerWhiteBoxTest {
39    public static void main(String[] args) throws Exception {
40        CompilerWhiteBoxTest.main(GetNMethodTest::new, args);
41    }
42
43    private GetNMethodTest(TestCase testCase) {
44        super(testCase);
45        // to prevent inlining of #method
46        WHITE_BOX.testSetDontInlineMethod(method, true);
47    }
48
49    @Override
50    protected void test() throws Exception {
51        checkNotCompiled();
52
53        compile();
54        checkCompiled();
55        NMethod nmethod = NMethod.get(method, testCase.isOsr());
56        if (IS_VERBOSE) {
57            System.out.println("nmethod = " + nmethod);
58        }
59        if (nmethod == null) {
60            throw new RuntimeException("nmethod of compiled method is null");
61        }
62        if (nmethod.insts.length == 0) {
63            throw new RuntimeException("compiled method's instructions is empty");
64        }
65        deoptimize();
66        checkNotCompiled();
67        nmethod = NMethod.get(method, testCase.isOsr());
68        if (nmethod != null) {
69            throw new RuntimeException("nmethod of non-compiled method isn't null");
70        }
71    }
72}
73