Class Profiler

src/main/java/net/minecraft/profiler/Profiler.java:14–257

import org.apache.logging.log4j.Logger;

public class Profiler
{
    private static final Logger logger = LogManager.getLogger();
    private final List<String> sectionList = Lists.<String>newArrayList();
    private final List<Long> timestampList = Lists.<Long>newArrayList();

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

    /** Current profiling section */
    private String profilingSection = "";
    private final Map<String, Long> profilingMap = Maps.<String, Long>newHashMap();
    public boolean profilerGlobalEnabled = true;
    private boolean profilerLocalEnabled;
    private static final String SCHEDULED_EXECUTABLES = "scheduledExecutables";
    private static final String TICK = "tick";
    private static final String PRE_RENDER_ERRORS = "preRenderErrors";
    private static final String RENDER = "render";
    private static final String DISPLAY = "display";
    private static final int HASH_SCHEDULED_EXECUTABLES = "scheduledExecutables".hashCode();
    private static final int HASH_TICK = "tick".hashCode();
    private static final int HASH_PRE_RENDER_ERRORS = "preRenderErrors".hashCode();
    private static final int HASH_RENDER = "render".hashCode();
    private static final int HASH_DISPLAY = "display".hashCode();

    public Profiler()
    {
        this.profilerLocalEnabled = this.profilerGlobalEnabled;
    }

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

    /**
     * Start section
     */
    public void startSection(String name)
    {
        if (Lagometer.isActive())
        {
            int i = name.hashCode();

            if (i == HASH_SCHEDULED_EXECUTABLES && name.equals("scheduledExecutables"))
            {
                Lagometer.timerScheduledExecutables.start();
            }
            else if (i == HASH_TICK && name.equals("tick") && Config.isMinecraftThread())
            {
                Lagometer.timerScheduledExecutables.end();
                Lagometer.timerTick.start();