GetCodeHeapEntriesTest.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.util.Arrays;
26import java.util.EnumSet;
27
28import sun.hotspot.WhiteBox;
29import sun.hotspot.code.CodeBlob;
30import sun.hotspot.code.BlobType;
31import jdk.test.lib.Asserts;
32
33/*
34 * @test GetCodeHeapEntriesTest
35 * @bug 8059624
36 * @library /testlibrary /../../test/lib
37 * @modules java.management
38 * @build GetCodeHeapEntriesTest
39 * @run main ClassFileInstaller sun.hotspot.WhiteBox
40 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
41 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
42 *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache
43 *                   GetCodeHeapEntriesTest
44 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
45 *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache
46 *                   GetCodeHeapEntriesTest
47 * @summary testing of WB::getCodeHeapEntries()
48 */
49public class GetCodeHeapEntriesTest {
50    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
51    private static final int SIZE = 1024;
52    private static final String DUMMY_NAME = "WB::DummyBlob";
53    private static EnumSet<BlobType> SEGMENTED_TYPES
54            = EnumSet.complementOf(EnumSet.of(BlobType.All));
55
56    public static void main(String[] args) {
57        EnumSet<BlobType> blobTypes = BlobType.getAvailable();
58        for (BlobType type : blobTypes) {
59            new GetCodeHeapEntriesTest(type).test();
60        }
61    }
62
63    private final BlobType type;
64    private GetCodeHeapEntriesTest(BlobType type) {
65        this.type = type;
66    }
67
68    private void test() {
69        System.out.printf("type %s%n", type);
70        long addr = WHITE_BOX.allocateCodeBlob(SIZE, type.id);
71        Asserts.assertNE(0, addr, "allocation failed");
72        CodeBlob[] blobs = CodeBlob.getCodeBlobs(type);
73        Asserts.assertNotNull(blobs);
74        CodeBlob blob = Arrays.stream(blobs)
75                              .filter(GetCodeHeapEntriesTest::filter)
76                              .findAny()
77                              .get();
78        Asserts.assertNotNull(blob);
79        Asserts.assertEQ(blob.code_blob_type, type);
80        Asserts.assertGTE(blob.size, SIZE);
81
82        WHITE_BOX.freeCodeBlob(addr);
83        blobs = CodeBlob.getCodeBlobs(type);
84        long count = Arrays.stream(blobs)
85                           .filter(GetCodeHeapEntriesTest::filter)
86                           .count();
87        Asserts.assertEQ(0L, count);
88    }
89
90    private static boolean filter(CodeBlob blob) {
91        if (blob == null) {
92            return false;
93        }
94        return DUMMY_NAME.equals(blob.name);
95    }
96}
97