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
26 * @bug 8059624 8064669 8153265
27 * @summary testing of WB::forceNMethodSweep
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:. -XX:+UnlockDiagnosticVMOptions
35 *                   -XX:-TieredCompilation -XX:+WhiteBoxAPI
36 *                   -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::*
37 *                   -XX:-BackgroundCompilation -XX:-UseCounterDecay
38 *                   compiler.whitebox.ForceNMethodSweepTest
39 */
40
41package compiler.whitebox;
42
43import jdk.test.lib.Asserts;
44import sun.hotspot.code.BlobType;
45
46import java.util.EnumSet;
47
48public class ForceNMethodSweepTest extends CompilerWhiteBoxTest {
49    public static void main(String[] args) throws Exception {
50        CompilerWhiteBoxTest.main(ForceNMethodSweepTest::new, args);
51    }
52    private final EnumSet<BlobType> blobTypes;
53    private ForceNMethodSweepTest(TestCase testCase) {
54        super(testCase);
55        // to prevent inlining of #method
56        WHITE_BOX.testSetDontInlineMethod(method, true);
57        blobTypes = BlobType.getAvailable();
58    }
59
60    @Override
61    protected void test() throws Exception {
62        // prime the asserts: get their bytecodes loaded, any lazy computation
63        // resolved, and executed once
64        Asserts.assertGT(1, 0, "message");
65        Asserts.assertLTE(0, 0, "message");
66        Asserts.assertLT(-1, 0, "message");
67
68        checkNotCompiled();
69        guaranteedSweep();
70        int usage = getTotalUsage();
71
72        compile();
73        checkCompiled();
74        int afterCompilation = getTotalUsage();
75        Asserts.assertGT(afterCompilation, usage,
76                "compilation should increase usage");
77
78        guaranteedSweep();
79        int afterSweep = getTotalUsage();
80        Asserts.assertLTE(afterSweep, afterCompilation,
81                "sweep shouldn't increase usage");
82
83        deoptimize();
84        guaranteedSweep();
85        int afterDeoptAndSweep = getTotalUsage();
86        Asserts.assertLT(afterDeoptAndSweep, afterSweep,
87                "sweep after deoptimization should decrease usage");
88     }
89
90    private int getTotalUsage() {
91        int usage = 0;
92        for (BlobType type : blobTypes) {
93           usage += type.getMemoryPool().getUsage().getUsed();
94        }
95        return usage;
96    }
97    private void guaranteedSweep() {
98        // not entrant -> ++stack_traversal_mark -> zombie -> flushed
99        for (int i = 0; i < 5; ++i) {
100            WHITE_BOX.fullGC();
101            WHITE_BOX.forceNMethodSweep();
102        }
103    }
104}
105