http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.channel.DefaultEventLoop extends io.netty.channel.SingleThreadEventLoop
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.channel.DefaultEventLoop
  super_class: io.netty.channel.SingleThreadEventLoop
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.channel.DefaultEventLoop this
         0: .line 26
            aload 0 /* this */
            aconst_null
            invokespecial io.netty.channel.DefaultEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;)V
         1: .line 27
            return
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/channel/DefaultEventLoop;

  public void <init>(java.util.concurrent.ThreadFactory);
    descriptor: (Ljava/util/concurrent/ThreadFactory;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.channel.DefaultEventLoop this
        start local 1 // java.util.concurrent.ThreadFactory threadFactory
         0: .line 30
            aload 0 /* this */
            aconst_null
            aload 1 /* threadFactory */
            invokespecial io.netty.channel.DefaultEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/ThreadFactory;)V
         1: .line 31
            return
        end local 1 // java.util.concurrent.ThreadFactory threadFactory
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lio/netty/channel/DefaultEventLoop;
            0    2     1  threadFactory  Ljava/util/concurrent/ThreadFactory;
    MethodParameters:
               Name  Flags
      threadFactory  

  public void <init>(java.util.concurrent.Executor);
    descriptor: (Ljava/util/concurrent/Executor;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.channel.DefaultEventLoop this
        start local 1 // java.util.concurrent.Executor executor
         0: .line 34
            aload 0 /* this */
            aconst_null
            aload 1 /* executor */
            invokespecial io.netty.channel.DefaultEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/Executor;)V
         1: .line 35
            return
        end local 1 // java.util.concurrent.Executor executor
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lio/netty/channel/DefaultEventLoop;
            0    2     1  executor  Ljava/util/concurrent/Executor;
    MethodParameters:
          Name  Flags
      executor  

  public void <init>(io.netty.channel.EventLoopGroup);
    descriptor: (Lio/netty/channel/EventLoopGroup;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // io.netty.channel.DefaultEventLoop this
        start local 1 // io.netty.channel.EventLoopGroup parent
         0: .line 38
            aload 0 /* this */
            aload 1 /* parent */
            new io.netty.util.concurrent.DefaultThreadFactory
            dup
            ldc Lio/netty/channel/DefaultEventLoop;
            invokespecial io.netty.util.concurrent.DefaultThreadFactory.<init>:(Ljava/lang/Class;)V
            invokespecial io.netty.channel.DefaultEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/ThreadFactory;)V
         1: .line 39
            return
        end local 1 // io.netty.channel.EventLoopGroup parent
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lio/netty/channel/DefaultEventLoop;
            0    2     1  parent  Lio/netty/channel/EventLoopGroup;
    MethodParameters:
        Name  Flags
      parent  

  public void <init>(io.netty.channel.EventLoopGroup, java.util.concurrent.ThreadFactory);
    descriptor: (Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/ThreadFactory;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // io.netty.channel.DefaultEventLoop this
        start local 1 // io.netty.channel.EventLoopGroup parent
        start local 2 // java.util.concurrent.ThreadFactory threadFactory
         0: .line 42
            aload 0 /* this */
            aload 1 /* parent */
            aload 2 /* threadFactory */
            iconst_1
            invokespecial io.netty.channel.SingleThreadEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/ThreadFactory;Z)V
         1: .line 43
            return
        end local 2 // java.util.concurrent.ThreadFactory threadFactory
        end local 1 // io.netty.channel.EventLoopGroup parent
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lio/netty/channel/DefaultEventLoop;
            0    2     1         parent  Lio/netty/channel/EventLoopGroup;
            0    2     2  threadFactory  Ljava/util/concurrent/ThreadFactory;
    MethodParameters:
               Name  Flags
      parent         
      threadFactory  

  public void <init>(io.netty.channel.EventLoopGroup, java.util.concurrent.Executor);
    descriptor: (Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/Executor;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // io.netty.channel.DefaultEventLoop this
        start local 1 // io.netty.channel.EventLoopGroup parent
        start local 2 // java.util.concurrent.Executor executor
         0: .line 46
            aload 0 /* this */
            aload 1 /* parent */
            aload 2 /* executor */
            iconst_1
            invokespecial io.netty.channel.SingleThreadEventLoop.<init>:(Lio/netty/channel/EventLoopGroup;Ljava/util/concurrent/Executor;Z)V
         1: .line 47
            return
        end local 2 // java.util.concurrent.Executor executor
        end local 1 // io.netty.channel.EventLoopGroup parent
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lio/netty/channel/DefaultEventLoop;
            0    2     1    parent  Lio/netty/channel/EventLoopGroup;
            0    2     2  executor  Ljava/util/concurrent/Executor;
    MethodParameters:
          Name  Flags
      parent    
      executor  

  protected void run();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=2, args_size=1
        start local 0 // io.netty.channel.DefaultEventLoop this
         0: .line 52
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.channel.DefaultEventLoop.takeTask:()Ljava/lang/Runnable;
            astore 1 /* task */
        start local 1 // java.lang.Runnable task
         1: .line 53
            aload 1 /* task */
            ifnull 4
         2: .line 54
            aload 1 /* task */
            invokeinterface java.lang.Runnable.run:()V
         3: .line 55
            aload 0 /* this */
            invokevirtual io.netty.channel.DefaultEventLoop.updateLastExecutionTime:()V
         4: .line 58
      StackMap locals: java.lang.Runnable
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.channel.DefaultEventLoop.confirmShutdown:()Z
            ifeq 0
        end local 1 // java.lang.Runnable task
         5: .line 62
            return
        end local 0 // io.netty.channel.DefaultEventLoop this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lio/netty/channel/DefaultEventLoop;
            1    5     1  task  Ljava/lang/Runnable;
}
SourceFile: "DefaultEventLoop.java"