1 /*

     2  * Copyright (c) 2014, 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 import java.util.Arrays;

    26 import java.util.EnumSet;

    27 

    28 import sun.hotspot.WhiteBox;

    29 import sun.hotspot.code.CodeBlob;

    30 import sun.hotspot.code.BlobType;

    31 import com.oracle.java.testlibrary.Asserts;

    32 

    33 /*

    34  * @test GetCodeHeapEntriesTest

    35  * @bug 8059624

    36  * @library /testlibrary /testlibrary/whitebox

    37  * @build GetCodeHeapEntriesTest

    38  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    39  *                              sun.hotspot.WhiteBox$WhiteBoxPermission

    40  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    41  *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache

    42  *                   GetCodeHeapEntriesTest

    43  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions

    44  *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache

    45  *                   GetCodeHeapEntriesTest

    46  * @summary testing of WB::getCodeHeapEntries()

    47  */

    48 public class GetCodeHeapEntriesTest {

    49     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();

    50     private static final int SIZE = 1024;

    51     private static final String DUMMY_NAME = "WB::DummyBlob";

    52     private static EnumSet<BlobType> SEGMENTED_TYPES

    53             = EnumSet.complementOf(EnumSet.of(BlobType.All));

    54 

    55     public static void main(String[] args) {

    56         EnumSet<BlobType> blobTypes = BlobType.getAvailable();

    57         for (BlobType type : blobTypes) {

    58             new GetCodeHeapEntriesTest(type).test();

    59         }

    60     }

    61 

    62     private final BlobType type;

    63     private GetCodeHeapEntriesTest(BlobType type) {

    64         this.type = type;

    65     }

    66 

    67     private void test() {

    68         System.out.printf("type %s%n", type);

    69         long addr = WHITE_BOX.allocateCodeBlob(SIZE, type.id);

    70         Asserts.assertNE(0, addr, "allocation failed");

    71         CodeBlob[] blobs = CodeBlob.getCodeBlobs(type);

    72         Asserts.assertNotNull(blobs);

    73         CodeBlob blob = Arrays.stream(blobs)

    74                               .filter(GetCodeHeapEntriesTest::filter)

    75                               .findAny()

    76                               .get();

    77         Asserts.assertNotNull(blob);

    78         Asserts.assertEQ(blob.code_blob_type, type);

    79         Asserts.assertGTE(blob.size, SIZE);

    80 

    81         WHITE_BOX.freeCodeBlob(addr);

    82         blobs = CodeBlob.getCodeBlobs(type);

    83         long count = Arrays.stream(blobs)

    84                            .filter(GetCodeHeapEntriesTest::filter)

    85                            .count();

    86         Asserts.assertEQ(0L, count);

    87     }

    88 

    89     private static boolean filter(CodeBlob blob) {

    90         if (blob == null) {

    91             return false;

    92         }

    93         return DUMMY_NAME.equals(blob.name);

    94     }

    95 }