Profiler.java

package net.minecraft.profiler;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class Profiler
{
    private static final Logger logger = LogManager.getLogger();

    /** List of parent sections */
    private final List sectionList = Lists.newArrayList();

    /** List of timestamps (System.nanoTime) */
    private final List timestampList = Lists.newArrayList();

    /** Flag profiling enabled */
    public boolean profilingEnabled;

    /** Current profiling section */
    private String profilingSection = "";

    /** Profiling map */
    private final Map profilingMap = Maps.newHashMap();
    private static final String __OBFID = "CL_00001497";

    /**
     * Clear profiling.
     */
    public void clearProfiling()
    {
        this.profilingMap.clear();
        this.profilingSection = "";
        this.sectionList.clear();
    }

    /**
     * Start section
     */
    public void startSection(String name)
    {
        if (this.profilingEnabled)
        {
            if (this.profilingSection.length() > 0)
            {
                this.profilingSection = this.profilingSection + ".";
            }

            this.profilingSection = this.profilingSection + name;
            this.sectionList.add(this.profilingSection);
            this.timestampList.add(Long.valueOf(System.nanoTime()));
        }
    }

    /**
     * End section
     */
    public void endSection()
    {
        if (this.profilingEnabled)
        {
            long var1 = System.nanoTime();
            long var3 = ((Long)this.timestampList.remove(this.timestampList.size() - 1)).longValue();
            this.sectionList.remove(this.sectionList.size() - 1);
            long var5 = var1 - var3;

            if (this.profilingMap.containsKey(this.profilingSection))
            {
                this.profilingMap.put(this.profilingSection, Long.valueOf(((Long)this.profilingMap.get(this.profilingSection)).longValue() + var5));
            }
            else
            {
                this.profilingMap.put(this.profilingSection, Long.valueOf(var5));
            }

            if (var5 > 100000000L)
            {
                logger.warn("Something\'s taking too long! \'" + this.profilingSection + "\' took aprox " + (double)var5 / 1000000.0D + " ms");
            }

            this.profilingSection = !this.sectionList.isEmpty() ? (String)this.sectionList.get(this.sectionList.size() - 1) : "";
        }
    }

    /**
     * Get profiling data
     */
    public List getProfilingData(String p_76321_1_)
    {
        if (!this.profilingEnabled)
        {
            return null;
        }
        else
        {
            long var3 = this.profilingMap.containsKey("root") ? ((Long)this.profilingMap.get("root")).longValue() : 0L;
            long var5 = this.profilingMap.containsKey(p_76321_1_) ? ((Long)this.profilingMap.get(p_76321_1_)).longValue() : -1L;
            ArrayList var7 = Lists.newArrayList();

            if (p_76321_1_.length() > 0)
            {
                p_76321_1_ = p_76321_1_ + ".";
            }

            long var8 = 0L;
            Iterator var10 = this.profilingMap.keySet().iterator();

            while (var10.hasNext())
            {
                String var11 = (String)var10.next();

                if (var11.length() > p_76321_1_.length() && var11.startsWith(p_76321_1_) && var11.indexOf(".", p_76321_1_.length() + 1) < 0)
                {
                    var8 += ((Long)this.profilingMap.get(var11)).longValue();
                }
            }

            float var20 = (float)var8;

            if (var8 < var5)
            {
                var8 = var5;
            }

            if (var3 < var8)
            {
                var3 = var8;
            }

            Iterator var21 = this.profilingMap.keySet().iterator();
            String var12;

            while (var21.hasNext())
            {
                var12 = (String)var21.next();

                if (var12.length() > p_76321_1_.length() && var12.startsWith(p_76321_1_) && var12.indexOf(".", p_76321_1_.length() + 1) < 0)
                {
                    long var13 = ((Long)this.profilingMap.get(var12)).longValue();
                    double var15 = (double)var13 * 100.0D / (double)var8;
                    double var17 = (double)var13 * 100.0D / (double)var3;
                    String var19 = var12.substring(p_76321_1_.length());
                    var7.add(new Profiler.Result(var19, var15, var17));
                }
            }

            var21 = this.profilingMap.keySet().iterator();

            while (var21.hasNext())
            {
                var12 = (String)var21.next();
                this.profilingMap.put(var12, Long.valueOf(((Long)this.profilingMap.get(var12)).longValue() * 999L / 1000L));
            }

            if ((float)var8 > var20)
            {
                var7.add(new Profiler.Result("unspecified", (double)((float)var8 - var20) * 100.0D / (double)var8, (double)((float)var8 - var20) * 100.0D / (double)var3));
            }

            Collections.sort(var7);
            var7.add(0, new Profiler.Result(p_76321_1_, 100.0D, (double)var8 * 100.0D / (double)var3));
            return var7;
        }
    }

    /**
     * End current section and start a new section
     */
    public void endStartSection(String name)
    {
        this.endSection();
        this.startSection(name);
    }

    public String getNameOfLastSection()
    {
        return this.sectionList.size() == 0 ? "[UNKNOWN]" : (String)this.sectionList.get(this.sectionList.size() - 1);
    }

    public static final class Result implements Comparable
    {
        public double field_76332_a;
        public double field_76330_b;
        public String field_76331_c;
        private static final String __OBFID = "CL_00001498";

        public Result(String p_i1554_1_, double p_i1554_2_, double p_i1554_4_)
        {
            this.field_76331_c = p_i1554_1_;
            this.field_76332_a = p_i1554_2_;
            this.field_76330_b = p_i1554_4_;
        }

        public int compareTo(Profiler.Result p_compareTo_1_)
        {
            return p_compareTo_1_.field_76332_a < this.field_76332_a ? -1 : (p_compareTo_1_.field_76332_a > this.field_76332_a ? 1 : p_compareTo_1_.field_76331_c.compareTo(this.field_76331_c));
        }

        public int compareTo(Object p_compareTo_1_)
        {
            return this.compareTo((Profiler.Result)p_compareTo_1_);
        }
    }
}