ForceNMethodSweepTest.java revision 8359:ed6389f70257 
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
25import java.lang.reflect.Method;
26import java.util.EnumSet;
27
28import sun.hotspot.WhiteBox;
29import sun.hotspot.code.BlobType;
30
31import jdk.test.lib.Asserts;
32import jdk.test.lib.InfiniteLoop;
33
34/*
35 * @test
36 * @bug 8059624 8064669
37 * @library /testlibrary /../../test/lib
38 * @modules java.management
39 * @build ForceNMethodSweepTest
40 * @run main ClassFileInstaller sun.hotspot.WhiteBox
41 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
42 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
43 *                   -XX:-TieredCompilation -XX:+WhiteBoxAPI
44 *                   -XX:CompileCommand=compileonly,SimpleTestCase$Helper::*
45 *                   -XX:-BackgroundCompilation ForceNMethodSweepTest
46 * @summary testing of WB::forceNMethodSweep
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        checkNotCompiled();
63        guaranteedSweep();
64        int usage = getTotalUsage();
65
66        compile();
67        checkCompiled();
68        int afterCompilation = getTotalUsage();
69        Asserts.assertGT(afterCompilation, usage,
70                "compilation should increase usage");
71
72        guaranteedSweep();
73        int afterSweep = getTotalUsage();
74        Asserts.assertLTE(afterSweep, afterCompilation,
75                "sweep shouldn't increase usage");
76
77        deoptimize();
78        guaranteedSweep();
79        int afterDeoptAndSweep = getTotalUsage();
80        Asserts.assertLT(afterDeoptAndSweep, afterSweep,
81                "sweep after deoptimization should decrease usage");
82     }
83
84    private int getTotalUsage() {
85        int usage = 0;
86        for (BlobType type : blobTypes) {
87           usage += type.getMemoryPool().getUsage().getUsed();
88        }
89        return usage;
90    }
91    private void guaranteedSweep() {
92        // not entrant -> ++stack_traversal_mark -> zombie -> reclamation -> flushed
93        for (int i = 0; i < 5; ++i) {
94            WHITE_BOX.fullGC();
95            WHITE_BOX.forceNMethodSweep();
96        }
97    }
98}
99