ForceNMethodSweepTest.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
27 * @bug 8059624 8064669 8153265
28 * @summary testing of WB::forceNMethodSweep
29 * @library /testlibrary /test/lib /
30 * @modules java.base/jdk.internal.misc
31 *          java.management
32 * @build compiler.whitebox.ForceNMethodSweepTest
33 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
34 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
35 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
36 *                   -XX:-TieredCompilation -XX:+WhiteBoxAPI
37 *                   -XX:CompileCommand=compileonly,compiler.whitebox.SimpleTestCaseHelper::*
38 *                   -XX:-BackgroundCompilation -XX:-UseCounterDecay
39 *                   compiler.whitebox.ForceNMethodSweepTest
40 */
41
42package compiler.whitebox;
43
44import jdk.test.lib.Asserts;
45import sun.hotspot.code.BlobType;
46
47import java.util.EnumSet;
48
49public class ForceNMethodSweepTest extends CompilerWhiteBoxTest {
50    public static void main(String[] args) throws Exception {
51        CompilerWhiteBoxTest.main(ForceNMethodSweepTest::new, args);
52    }
53    private final EnumSet<BlobType> blobTypes;
54    private ForceNMethodSweepTest(TestCase testCase) {
55        super(testCase);
56        // to prevent inlining of #method
57        WHITE_BOX.testSetDontInlineMethod(method, true);
58        blobTypes = BlobType.getAvailable();
59    }
60
61    @Override
62    protected void test() throws Exception {
63        // prime the asserts: get their bytecodes loaded, any lazy computation
64        // resolved, and executed once
65        Asserts.assertGT(1, 0, "message");
66        Asserts.assertLTE(0, 0, "message");
67        Asserts.assertLT(-1, 0, "message");
68
69        checkNotCompiled();
70        guaranteedSweep();
71        int usage = getTotalUsage();
72
73        compile();
74        checkCompiled();
75        int afterCompilation = getTotalUsage();
76        Asserts.assertGT(afterCompilation, usage,
77                "compilation should increase usage");
78
79        guaranteedSweep();
80        int afterSweep = getTotalUsage();
81        Asserts.assertLTE(afterSweep, afterCompilation,
82                "sweep shouldn't increase usage");
83
84        deoptimize();
85        guaranteedSweep();
86        int afterDeoptAndSweep = getTotalUsage();
87        Asserts.assertLT(afterDeoptAndSweep, afterSweep,
88                "sweep after deoptimization should decrease usage");
89     }
90
91    private int getTotalUsage() {
92        int usage = 0;
93        for (BlobType type : blobTypes) {
94           usage += type.getMemoryPool().getUsage().getUsed();
95        }
96        return usage;
97    }
98    private void guaranteedSweep() {
99        // not entrant -> ++stack_traversal_mark -> zombie -> flushed
100        for (int i = 0; i < 5; ++i) {
101            WHITE_BOX.fullGC();
102            WHITE_BOX.forceNMethodSweep();
103        }
104    }
105}
106