/*

 * Copyright (c) 2014, 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

 * questions.

 *

 */

package sun.hotspot.code;

import java.lang.management.ManagementFactory;

import java.lang.management.MemoryPoolMXBean;

import java.util.EnumSet;

import sun.hotspot.WhiteBox;

public enum BlobType {

    // Execution level 1 and 4 (non-profiled) nmethods (including native nmethods)

    MethodNonProfiled(0, "CodeHeap 'non-profiled nmethods'"),

    // Execution level 2 and 3 (profiled) nmethods

    MethodProfiled(1, "CodeHeap 'profiled nmethods'"),

    // Non-nmethods like Buffers, Adapters and Runtime Stubs

    NonNMethod(2, "CodeHeap 'non-nmethods'"),

    // All types (No code cache segmentation)

    All(3, "CodeCache");

    public final int id;

    private final String beanName;

    private BlobType(int id, String beanName) {

        this.id = id;

        this.beanName = beanName;

    }

    public MemoryPoolMXBean getMemoryPool() {

        for (MemoryPoolMXBean bean : ManagementFactory.getMemoryPoolMXBeans()) {

            String name = bean.getName();

            if (beanName.equals(name)) {

                return bean;

            }

        }

        return null;

    }

    public static EnumSet<BlobType> getAvailable() {

        WhiteBox whiteBox = WhiteBox.getWhiteBox();

        if (!whiteBox.getBooleanVMFlag("SegmentedCodeCache")) {

            // only All for non segmented world

            return EnumSet.of(All);

        }

        if (System.getProperty("java.vm.info").startsWith("interpreted ")) {

            // only NonNMethod for -Xint

            return EnumSet.of(NonNMethod);

        }

        EnumSet<BlobType> result = EnumSet.complementOf(EnumSet.of(All));

        if (!whiteBox.getBooleanVMFlag("TieredCompilation")

                || whiteBox.getIntxVMFlag("TieredStopAtLevel") <= 1) {

            // there is no MethodProfiled in non tiered world or pure C1

            result.remove(MethodProfiled);

        }

        return result;

    }

}