OverflowCodeCacheTest.java revision 11833:1cbffa2beba6 
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.
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23 */
24
25/*
26 * @test OverflowCodeCacheTest
27 * @bug 8059550
28 * @summary testing of code cache segments overflow
29 * @library /test/lib
30 * @modules java.base/jdk.internal.misc
31 *          java.management
32 *
33 * @build sun.hotspot.WhiteBox
34 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
35 *                                sun.hotspot.WhiteBox$WhiteBoxPermission
36 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
37 *                   -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
38 *                   -XX:-SegmentedCodeCache
39 *                   compiler.codecache.OverflowCodeCacheTest
40 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
41 *                   -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
42 *                   -XX:+SegmentedCodeCache
43 *                   compiler.codecache.OverflowCodeCacheTest
44 */
45
46package compiler.codecache;
47
48import jdk.test.lib.Asserts;
49import sun.hotspot.WhiteBox;
50import sun.hotspot.code.BlobType;
51import sun.hotspot.code.CodeBlob;
52
53import java.lang.management.MemoryPoolMXBean;
54import java.util.ArrayList;
55import java.util.EnumSet;
56
57public class OverflowCodeCacheTest {
58    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
59
60    public static void main(String[] args) {
61        EnumSet<BlobType> blobTypes = BlobType.getAvailable();
62        for (BlobType type : blobTypes) {
63            new OverflowCodeCacheTest(type).test();
64        }
65    }
66
67    private final BlobType type;
68    private final MemoryPoolMXBean bean;
69    private OverflowCodeCacheTest(BlobType type) {
70        this.type = type;
71        this.bean = type.getMemoryPool();
72    }
73
74    private void test() {
75        System.out.printf("type %s%n", type);
76        System.out.println("allocating till possible...");
77        ArrayList<Long> blobs = new ArrayList<>();
78        try {
79            long addr;
80            int size = (int) (getHeapSize() >> 7);
81            while ((addr = WHITE_BOX.allocateCodeBlob(size, type.id)) != 0) {
82                blobs.add(addr);
83
84                BlobType actualType = CodeBlob.getCodeBlob(addr).code_blob_type;
85                if (actualType != type) {
86                    // check we got allowed overflow handling
87                    Asserts.assertTrue(type.allowTypeWhenOverflow(actualType),
88                            type + " doesn't allow using " + actualType + " when overflow");
89                }
90            }
91            Asserts.assertNotEquals(WHITE_BOX.getCompilationActivityMode(), 1 /* run_compilation*/,
92                    "Compilation must be disabled when CodeCache(CodeHeap) overflows");
93        } finally {
94            for (Long blob : blobs) {
95                WHITE_BOX.freeCodeBlob(blob);
96            }
97        }
98    }
99
100    private long getHeapSize() {
101        return bean.getUsage().getMax();
102    }
103
104}
105