JDK 11 jdk.internal.jvmstat.jmod - Internal JVM Stat Module

JDK 11 jdk.internal.JVM Stat.jmod is the JMOD file for JDK 11 Internal Jvmstat module.

JDK 11 Internal JVM Stat module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.internal.jvmstat.jmod.

JDK 11 Internal JVM Stat module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Internal JVM Stat module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.internal.jvmstat.

You can click and view the content of each source code file in the list below.

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sun/jvmstat/perfdata/monitor/PerfStringMonitor.java

/*
 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package sun.jvmstat.perfdata.monitor;

import sun.jvmstat.monitor.*;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;

/**
 * Class for monitoring a PerfData String instrument.
 *
 * @author Brian Doherty
 * @since 1.5
 */
public class PerfStringMonitor extends PerfByteArrayMonitor
       implements StringMonitor {

    private static Charset defaultCharset = Charset.defaultCharset();

    /**
     * Constructor to create a StringMonitor object for the string instrument
     * represented by the data in the given buffer.
     *
     * @param name the name of the string instrument
     * @param v the variability attribute
     * @param supported support level indicator
     * @param bb the buffer containing the string instrument data.
     */
    public PerfStringMonitor(String name, Variability v, boolean supported,
                             ByteBuffer bb) {
        this(name, v, supported, bb, bb.limit());
    }

    /**
     * Constructor to create a StringMonitor object for the string instrument
     * represented by the data in the given buffer.
     *
     * @param name the name of the string instrument
     * @param v the variability attribute
     * @param supported support level indicator
     * @param bb the buffer containing the string instrument data.
     * @param maxLength the maximum length of the string data.
     */
    public PerfStringMonitor(String name, Variability v, boolean supported,
                             ByteBuffer bb, int maxLength) {
        super(name, Units.STRING, v, supported, bb, maxLength);
    }

    /**
     * {@inheritDoc}
     * The object returned contains a String with a copy of the current
     * value of the StringInstrument.
     *
     * @return Object - a copy of the current value of the StringInstrument.
     *                  The return value is guaranteed to be of type String.
     */
    public Object getValue() {
        return stringValue();
    }

    /**
     * Return the current value of the StringInstrument as a String.
     *
     * @return String - a copy of the current value of the StringInstrument.
     */
    public String stringValue() {
        String str = "";
        byte[] b = byteArrayValue();

        // catch null strings
        if ((b == null) || (b.length <= 1) || (b[0] == (byte)0)) {
            return str;
        }

        int i;
        for (i = 0; i < b.length && b[i] != (byte)0; i++);

        return new String(b, 0, i, defaultCharset);
    }
}

sun/jvmstat/perfdata/monitor/PerfStringMonitor.java

 

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