GetNMethodTest.java revision 11707:ad7af1afda7a 
1/*
2 * Copyright (c) 2014, 2015, 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/*
26 * @test GetNMethodTest
27 * @bug 8038240
28 * @summary testing of WB::getNMethod()
29 * @library /testlibrary /test/lib /
30 * @modules java.base/jdk.internal.misc
31 *          java.management
32 * @build compiler.whitebox.GetNMethodTest
33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
34 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions
36 *                   -XX:+WhiteBoxAPI -XX:-UseCounterDecay
37 *                   -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::*
38 *                   compiler.whitebox.GetNMethodTest
39 */
40
41package compiler.whitebox;
42
43import jdk.test.lib.Asserts;
44import sun.hotspot.code.BlobType;
45import sun.hotspot.code.NMethod;
46
47public class GetNMethodTest extends CompilerWhiteBoxTest {
48    public static void main(String[] args) throws Exception {
49        CompilerWhiteBoxTest.main(GetNMethodTest::new, args);
50    }
51
52    private GetNMethodTest(TestCase testCase) {
53        super(testCase);
54        // to prevent inlining of #method
55        WHITE_BOX.testSetDontInlineMethod(method, true);
56    }
57
58    @Override
59    protected void test() throws Exception {
60        checkNotCompiled();
61
62        compile();
63        checkCompiled();
64
65        NMethod nmethod = NMethod.get(method, testCase.isOsr());
66        if (IS_VERBOSE) {
67            System.out.println("nmethod = " + nmethod);
68        }
69        Asserts.assertNotNull(nmethod,
70                "nmethod of compiled method is null");
71        Asserts.assertNotNull(nmethod.insts,
72                "nmethod.insts of compiled method is null");
73        Asserts.assertGT(nmethod.insts.length, 0,
74                "compiled method's instructions is empty");
75        Asserts.assertNotNull(nmethod.code_blob_type, "blob type is null");
76        if (WHITE_BOX.getBooleanVMFlag("SegmentedCodeCache")) {
77            Asserts.assertNE(nmethod.code_blob_type, BlobType.All);
78            switch (nmethod.comp_level) {
79            case 1:
80            case 4:
81                checkBlockType(nmethod, BlobType.MethodNonProfiled);
82                break;
83            case 2:
84            case 3:
85                checkBlockType(nmethod, BlobType.MethodProfiled);
86                break;
87            default:
88                throw new Error("unexpected comp level " + nmethod);
89            }
90        } else {
91            Asserts.assertEQ(nmethod.code_blob_type, BlobType.All);
92        }
93
94        deoptimize();
95        checkNotCompiled();
96        nmethod = NMethod.get(method, testCase.isOsr());
97        Asserts.assertNull(nmethod,
98                "nmethod of non-compiled method isn't null");
99    }
100
101    private void checkBlockType(NMethod nmethod, BlobType expectedType) {
102        Asserts.assertEQ(nmethod.code_blob_type, expectedType,
103                String.format("blob_type[%s] for %d level isn't %s",
104                        nmethod.code_blob_type, nmethod.comp_level, expectedType));
105    }
106}
107