1/*
2 * Copyright (c) 2014, 2016, 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 GetNMethodTest
26 * @bug 8038240
27 * @summary testing of WB::getNMethod()
28 * @library /test/lib /
29 * @modules java.base/jdk.internal.misc
30 *          java.management
31 * @build sun.hotspot.WhiteBox
32 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
33 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions
35 *                   -XX:+WhiteBoxAPI -XX:-UseCounterDecay
36 *                   -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::*
37 *                   compiler.whitebox.GetNMethodTest
38 */
39
40package compiler.whitebox;
41
42import jdk.test.lib.Asserts;
43import sun.hotspot.code.BlobType;
44import sun.hotspot.code.NMethod;
45
46public class GetNMethodTest extends CompilerWhiteBoxTest {
47    public static void main(String[] args) throws Exception {
48        CompilerWhiteBoxTest.main(GetNMethodTest::new, args);
49    }
50
51    private GetNMethodTest(TestCase testCase) {
52        super(testCase);
53        // to prevent inlining of #method
54        WHITE_BOX.testSetDontInlineMethod(method, true);
55    }
56
57    @Override
58    protected void test() throws Exception {
59        checkNotCompiled();
60
61        compile();
62        checkCompiled();
63
64        NMethod nmethod = NMethod.get(method, testCase.isOsr());
65        if (IS_VERBOSE) {
66            System.out.println("nmethod = " + nmethod);
67        }
68        Asserts.assertNotNull(nmethod,
69                "nmethod of compiled method is null");
70        Asserts.assertNotNull(nmethod.insts,
71                "nmethod.insts of compiled method is null");
72        Asserts.assertGT(nmethod.insts.length, 0,
73                "compiled method's instructions is empty");
74        Asserts.assertNotNull(nmethod.code_blob_type, "blob type is null");
75        if (WHITE_BOX.getBooleanVMFlag("SegmentedCodeCache")) {
76            Asserts.assertNE(nmethod.code_blob_type, BlobType.All);
77            switch (nmethod.comp_level) {
78            case 1:
79            case 4:
80                checkBlockType(nmethod, BlobType.MethodNonProfiled);
81                break;
82            case 2:
83            case 3:
84                checkBlockType(nmethod, BlobType.MethodProfiled);
85                break;
86            default:
87                throw new Error("unexpected comp level " + nmethod);
88            }
89        } else {
90            Asserts.assertEQ(nmethod.code_blob_type, BlobType.All);
91        }
92
93        deoptimize();
94        checkNotCompiled();
95        nmethod = NMethod.get(method, testCase.isOsr());
96        Asserts.assertNull(nmethod,
97                "nmethod of non-compiled method isn't null");
98    }
99
100    private void checkBlockType(NMethod nmethod, BlobType expectedType) {
101        Asserts.assertEQ(nmethod.code_blob_type, expectedType,
102                String.format("blob_type[%s] for %d level isn't %s",
103                        nmethod.code_blob_type, nmethod.comp_level, expectedType));
104    }
105}
106