Java AtomicLong getTrackedAllocationStatus()

Description

get Tracked Allocation Status

License

Apache License

Declaration

private static String getTrackedAllocationStatus() 

Method Source Code

//package com.java2s;
/**//from   w  w  w  . j  a  va  2 s  .  c om
 * Copyright (C) 2014-2015 LinkedIn Corp. (pinot-core@linkedin.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.concurrent.atomic.AtomicLong;

public class Main {
    private static final AtomicLong DIRECT_BYTE_BUFFER_USAGE = new AtomicLong(
            0L);
    private static final AtomicLong MMAP_BUFFER_USAGE = new AtomicLong(0L);
    private static final long BYTES_IN_MEGABYTE = 1024L * 1024L;

    private static String getTrackedAllocationStatus() {
        long directByteBufferUsage = DIRECT_BYTE_BUFFER_USAGE.get();
        long mmapBufferUsage = MMAP_BUFFER_USAGE.get();

        return "direct "
                + (directByteBufferUsage / BYTES_IN_MEGABYTE)
                + " MB, mmap "
                + (mmapBufferUsage / BYTES_IN_MEGABYTE)
                + " MB, total "
                + ((directByteBufferUsage + mmapBufferUsage) / BYTES_IN_MEGABYTE)
                + " MB";
    }
}

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