JDK14/Java14源码在线阅读

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 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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/*
 * This source code is provided to illustrate the usage of a given feature
 * or technique and has been deliberately simplified. Additional steps
 * required for a production-quality application, such as security checks,
 * input validation and proper error handling, might not be present in
 * this sample code.
 */


package j2dbench;

import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
import java.io.PrintWriter;
import java.util.HashMap;

public class Result {
    public static final int RATE_UNKNOWN    = 0;

    public static final int WORK_OPS        = 1;
    public static final int WORK_UNITS      = 2;
    public static final int WORK_THOUSANDS  = 4;
    public static final int WORK_MILLIONS   = 6;
    public static final int WORK_AUTO       = 8;

    public static final int TIME_SECONDS    = 10;
    public static final int TIME_MILLIS     = 11;
    public static final int TIME_MICROS     = 12;
    public static final int TIME_NANOS      = 13;
    public static final int TIME_AUTO       = 14;

    static Group resultoptroot;
    static Option.ObjectChoice timeOpt;
    static Option.ObjectChoice workOpt;
    static Option.ObjectChoice rateOpt;

    public static void init() {
        resultoptroot = new Group(TestEnvironment.globaloptroot,
                                  "results", "Result Options");

        String[] workStrings = {
            "units",
            "kilounits",
            "megaunits",
            "autounits",
            "ops",
            "kiloops",
            "megaops",
            "autoops",
        };
        String[] workDescriptions = {
            "Test Units",
            "Thousands of Test Units",
            "Millions of Test Units",
            "Auto-scaled Test Units",
            "Operations",
            "Thousands of Operations",
            "Millions of Operations",
            "Auto-scaled Operations",
        };
        Integer[] workObjects = {
            new Integer(WORK_UNITS),
            new Integer(WORK_THOUSANDS),
            new Integer(WORK_MILLIONS),
            new Integer(WORK_AUTO),
            new Integer(WORK_OPS | WORK_UNITS),
            new Integer(WORK_OPS | WORK_THOUSANDS),
            new Integer(WORK_OPS | WORK_MILLIONS),
            new Integer(WORK_OPS | WORK_AUTO),
        };
        workOpt = new Option.ObjectChoice(resultoptroot,
                                          "workunits", "Work Units",
                                          workStrings, workObjects,
                                          workStrings, workDescriptions,
                                          0);
        String[] timeStrings = {
            "sec",
            "msec",
            "usec",
            "nsec",
            "autosec",
        };
        String[] timeDescriptions = {
            "Seconds",
            "Milliseconds",
            "Microseconds",
            "Nanoseconds",
            "Auto-scaled seconds",
        };
        Integer[] timeObjects = {
            new Integer(TIME_SECONDS),
            new Integer(TIME_MILLIS),
            new Integer(TIME_MICROS),
            new Integer(TIME_NANOS),
            new Integer(TIME_AUTO),
        };
        timeOpt = new Option.ObjectChoice(resultoptroot,
                                          "timeunits", "Time Units",
                                          timeStrings, timeObjects,
                                          timeStrings, timeDescriptions,
                                          0);
        String[] rateStrings = {
            "unitspersec",
            "secsperunit",
        };
        String[] rateDescriptions = {
            "Work units per Time",
            "Time units per Work",
        };
        Boolean[] rateObjects = {
            Boolean.FALSE,
            Boolean.TRUE,
        };
        rateOpt = new Option.ObjectChoice(resultoptroot,
                                          "ratio", "Rate Ratio",
                                          rateStrings, rateObjects,
                                          rateStrings, rateDescriptions,
                                          0);
    }

    public static boolean isTimeUnit(int unit) {
        return (unit >= TIME_SECONDS && unit <= TIME_AUTO);
    }

    public static boolean isWorkUnit(int unit) {
        return (unit >= WORK_OPS && unit <= (WORK_AUTO | WORK_OPS));
    }

    public static String parseRateOpt(String opt) {
        int timeScale = timeOpt.getIntValue();
        int workScale = workOpt.getIntValue();
        boolean invertRate = rateOpt.getBooleanValue();
        int divindex = opt.indexOf('/');
        if (divindex < 0) {
            int unit = parseUnit(opt);
            if (isTimeUnit(unit)) {
                timeScale = unit;
            } else if (isWorkUnit(unit)) {
                workScale = unit;
            } else {
                return "Bad unit: "+opt;
            }
        } else {
            int unit1 = parseUnit(opt.substring(0,divindex));
            int unit2 = parseUnit(opt.substring(divindex+1));
            if (isTimeUnit(unit1)) {
                if (isWorkUnit(unit2)) {
                    timeScale = unit1;
                    workScale = unit2;
                    invertRate = true;
                } else if (isTimeUnit(unit2)) {
                    return "Both time units: "+opt;
                } else {
                    return "Bad denominator: "+opt;
                }
            } else if (isWorkUnit(unit1)) {
                if (isWorkUnit(unit2)) {
                    return "Both work units: "+opt;
                } else if (isTimeUnit(unit2)) {
                    timeScale = unit2;
                    workScale = unit1;
                    invertRate = false;
                } else {
                    return "Bad denominator: "+opt;
                }
            } else {
                return "Bad numerator: "+opt;
            }
        }
        timeOpt.setValue(timeScale);
        workOpt.setValue(workScale);
        rateOpt.setValue(invertRate);
        return null;
    }

    private static HashMap unitMap;

    static {
        unitMap = new HashMap();
        unitMap.put("U",  new Integer(WORK_UNITS));
        unitMap.put("M",  new Integer(WORK_MILLIONS));
        unitMap.put("K",  new Integer(WORK_THOUSANDS));
        unitMap.put("A",  new Integer(WORK_AUTO));
        unitMap.put("MU", new Integer(WORK_MILLIONS));
        unitMap.put("KU", new Integer(WORK_THOUSANDS));
        unitMap.put("AU", new Integer(WORK_AUTO));

        unitMap.put("O",  new Integer(WORK_UNITS | WORK_OPS));
        unitMap.put("NO", new Integer(WORK_UNITS | WORK_OPS));
        unitMap.put("MO", new Integer(WORK_MILLIONS | WORK_OPS));
        unitMap.put("KO", new Integer(WORK_THOUSANDS | WORK_OPS));
        unitMap.put("AO", new Integer(WORK_AUTO | WORK_OPS));

        unitMap.put("s",  new Integer(TIME_SECONDS));
        unitMap.put("m",  new Integer(TIME_MILLIS));
        unitMap.put("u",  new Integer(TIME_MICROS));
        unitMap.put("n",  new Integer(TIME_NANOS));
        unitMap.put("a",  new Integer(TIME_AUTO));
    }

    public static int parseUnit(String c) {
        Integer u = (Integer) unitMap.get(c);
        if (u != null) {
            return u.intValue();
        }
        return RATE_UNKNOWN;
    }

    String unitname = "unit";
    Test test;
    int repsPerRun;
    int unitsPerRep;
    Vector times;
    Hashtable modifiers;
    Throwable error;

    public Result(Test test) {
        this.test = test;
        this.repsPerRun = 1;
        this.unitsPerRep = 1;
        times = new Vector();
    }

    public void setReps(int reps) {
        this.repsPerRun = reps;
    }

    public void setUnits(int units) {
        this.unitsPerRep = units;
    }

    public void setUnitName(String name) {
        this.unitname = name;
    }

    public void addTime(long time) {
        if (J2DBench.printresults.isEnabled()) {
            System.out.println(test+" took "+time+"ms for "+
                               getRepsPerRun()+" reps");
        }
        times.addElement(new Long(time));
    }

    public void setError(Throwable t) {
        this.error = t;
    }

    public void setModifiers(Hashtable modifiers) {
        this.modifiers = modifiers;
    }

    public Throwable getError() {
        return error;
    }

    public int getRepsPerRun() {
        return repsPerRun;
    }

    public int getUnitsPerRep() {
        return unitsPerRep;
    }

    public long getUnitsPerRun() {
        return ((long) getRepsPerRun()) * ((long) getUnitsPerRep());
    }

    public Hashtable getModifiers() {
        return modifiers;
    }

    public long getNumRuns() {
        return times.size();
    }

    public long getTime(int index) {
        return ((Long) times.elementAt(index)).longValue();
    }

    public double getRepsPerSecond(int index) {
        return (getRepsPerRun() * 1000.0) / getTime(index);
    }

    public double getUnitsPerSecond(int index) {
        return (getUnitsPerRun() * 1000.0) / getTime(index);
    }

    public long getTotalReps() {
        return getRepsPerRun() * getNumRuns();
    }

    public long getTotalUnits() {
        return getUnitsPerRun() * getNumRuns();
    }

    public long getTotalTime() {
        long totalTime = 0;
        for (int i = 0; i < times.size(); i++) {
            totalTime += getTime(i);
        }
        return totalTime;
    }

    public double getAverageRepsPerSecond() {
        return (getTotalReps() * 1000.0) / getTotalTime();
    }

    public double getAverageUnitsPerSecond() {
        return (getTotalUnits() * 1000.0) / getTotalTime();
    }

    public String getAverageString() {
        int timeScale = timeOpt.getIntValue();
        int workScale = workOpt.getIntValue();
        boolean invertRate = rateOpt.getBooleanValue();
        double time = getTotalTime();
        String timeprefix = "";
        switch (timeScale) {
        case TIME_AUTO:
        case TIME_SECONDS:
            time /= 1000;
            break;
        case TIME_MILLIS:
            timeprefix = "m";
            break;
        case TIME_MICROS:
            time *= 1000.0;
            timeprefix = "u";
            break;
        case TIME_NANOS:
            time *= 1000000.0;
            timeprefix = "n";
            break;
        }

        String workprefix = "";
        boolean isOps = (workScale & WORK_OPS) != 0;
        String workname = isOps ? "op" : unitname;
        double work = isOps ? getTotalReps() : getTotalUnits();
        switch (workScale & (~WORK_OPS)) {
        case WORK_AUTO:
        case WORK_UNITS:
            break;
        case WORK_THOUSANDS:
            work /= 1000.0;
            workprefix = "K";
            break;
        case WORK_MILLIONS:
            work /= 1000000.0;
            workprefix = "M";
            break;
        }
        if (invertRate) {
            double rate = time / work;
            if (timeScale == TIME_AUTO) {
                if (rate < 1.0) {
                    rate *= 1000.0;
                    timeprefix = "m";
                    if (rate < 1.0) {
                        rate *= 1000.0;
                        timeprefix = "u";
                        if (rate < 1.0) {
                            rate *= 1000.0;
                            timeprefix = "n";
                        }
                    }
                }
            }
            return rate+" "+timeprefix+"secs/"+workprefix+workname;
        } else {
            double rate = work / time;
            if (workScale == WORK_AUTO) {
                if (rate > 1000.0) {
                    rate /= 1000.0;
                    workprefix = "K";
                    if (rate > 1000.0) {
                        rate /= 1000.0;
                        workprefix = "M";
                    }
                }
            }
            return rate+" "+workprefix+workname+"s/"+timeprefix+"sec";
        }
    }

    public void summarize() {

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