/*

 * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

import java.util.Arrays;

import java.util.EnumSet;

import sun.hotspot.WhiteBox;

import sun.hotspot.code.CodeBlob;

import sun.hotspot.code.BlobType;

/*

 * @test GetCodeHeapEntriesTest

 * @bug 8059624

 * @library /testlibrary /../../test/lib

 * @modules java.management

 * @build GetCodeHeapEntriesTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

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

 *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache

 *                   GetCodeHeapEntriesTest

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

 *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache

 *                   GetCodeHeapEntriesTest

 * @summary testing of WB::getCodeHeapEntries()

 */

public class GetCodeHeapEntriesTest {

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

    private static final int SIZE = 1024;

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

    private static EnumSet<BlobType> SEGMENTED_TYPES

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

    public static void main(String[] args) {

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

        for (BlobType type : blobTypes) {

            new GetCodeHeapEntriesTest(type).test();

        }

    }

    private final BlobType type;

    private GetCodeHeapEntriesTest(BlobType type) {

        this.type = type;

    }

    private void test() {

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

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

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

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

        Asserts.assertNotNull(blobs);

        CodeBlob blob = Arrays.stream(blobs)

                              .filter(GetCodeHeapEntriesTest::filter)

                              .findAny()

                              .get();

        Asserts.assertNotNull(blob);

        Asserts.assertEQ(blob.code_blob_type, type);

        Asserts.assertGTE(blob.size, SIZE);

        WHITE_BOX.freeCodeBlob(addr);

        blobs = CodeBlob.getCodeBlobs(type);

        long count = Arrays.stream(blobs)

                           .filter(GetCodeHeapEntriesTest::filter)

                           .count();

        Asserts.assertEQ(0L, count);

    }

    private static boolean filter(CodeBlob blob) {

        if (blob == null) {

            return false;

        }

        return DUMMY_NAME.equals(blob.name);

    }

}