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 8136421
27 * @requires vm.jvmci
28 * @library / /test/lib
29 *          ../common/patches
30 * @modules java.base/jdk.internal.misc
31 *          java.base/jdk.internal.org.objectweb.asm
32 *          java.base/jdk.internal.org.objectweb.asm.tree
33 *          jdk.internal.vm.ci/jdk.vm.ci.hotspot
34 *          jdk.internal.vm.ci/jdk.vm.ci.code
35 * @build jdk.internal.vm.ci/jdk.vm.ci.hotspot.CompilerToVMHelper
36 *        sun.hotspot.WhiteBox
37 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
38 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
39 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
40 *     -XX:+WhiteBoxAPI -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -Xbatch
41 *     -Djvmci.Compiler=null
42 *     compiler.jvmci.compilerToVM.IsMatureVsReprofileTest
43 */
44
45package compiler.jvmci.compilerToVM;
46
47import compiler.jvmci.common.CTVMUtilities;
48import compiler.jvmci.common.testcases.SimpleClass;
49import jdk.vm.ci.hotspot.CompilerToVMHelper;
50import jdk.test.lib.Asserts;
51import sun.hotspot.WhiteBox;
52import compiler.whitebox.CompilerWhiteBoxTest;
53import java.lang.reflect.Executable;
54import jdk.vm.ci.hotspot.HotSpotResolvedJavaMethod;
55import jdk.test.lib.Platform;
56
57public class IsMatureVsReprofileTest {
58    private static final WhiteBox WB = WhiteBox.getWhiteBox();
59    private static final boolean TIERED = WB.getBooleanVMFlag("TieredCompilation");
60    private static final boolean IS_XCOMP = Platform.isComp();
61
62    public static void main(String[] args) throws Exception {
63        new IsMatureVsReprofileTest().test();
64    }
65
66    public void test() throws Exception {
67        SimpleClass sclass = new SimpleClass();
68        Executable method = SimpleClass.class.getDeclaredMethod("testMethod");
69        long metaspaceMethodData = WB.getMethodData(method);
70        Asserts.assertEQ(metaspaceMethodData, 0L, "MDO should be null for a "
71                 + "never invoked method");
72        boolean isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
73        Asserts.assertFalse(isMature, "null MDO can't be mature");
74        for (int i = 0; i < CompilerWhiteBoxTest.THRESHOLD; i++) {
75            sclass.testMethod();
76        }
77        Asserts.assertTrue(WB.isMethodCompiled(method),
78                "Method should be compiled");
79        metaspaceMethodData = WB.getMethodData(method);
80        Asserts.assertNE(metaspaceMethodData, 0L,
81                "Multiple times invoked method should have MDO");
82        isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
83        /* a method is not mature for -Xcomp and -Tiered,
84           see NonTieredCompPolicy::is_mature */
85        Asserts.assertEQ(!IS_XCOMP || TIERED, isMature,
86                "Unexpected isMature state for compiled method");
87        HotSpotResolvedJavaMethod resolvedMethod
88                = CTVMUtilities.getResolvedMethod(method);
89        CompilerToVMHelper.reprofile(resolvedMethod);
90        Asserts.assertFalse(WB.isMethodCompiled(method),
91                "Unexpected method compilation state after reprofile");
92        metaspaceMethodData = WB.getMethodData(method);
93        isMature = CompilerToVMHelper.isMature(metaspaceMethodData);
94        Asserts.assertNE(metaspaceMethodData, 0L,
95                "Got null MDO after reprofile");
96        Asserts.assertEQ(TIERED && IS_XCOMP, isMature,
97                "Got unexpected isMature state after reprofiling");
98    }
99}
100