Class Acceptor<U>

java.lang.Object
org.apache.tomcat.util.net.Acceptor<U>
Type Parameters:
U - the type of the socket
All Implemented Interfaces:
Runnable
Direct Known Subclasses:
Nio2Endpoint.Nio2Acceptor
public class Acceptor<U> extends Object implements Runnable
Acceptor thread that accepts incoming connections.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static enum 
    Acceptor.AcceptorState
    States of the acceptor lifecycle.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected Acceptor.AcceptorState
    state
    Current state of the acceptor.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Acceptor(AbstractEndpoint<?,U> endpoint)
    Constructs a new Acceptor.

  • Method Summary

    Modifier and Type
    Method
    Description
    final Acceptor.AcceptorState
    getState()
    Returns the current state of the acceptor.
    protected int
    handleExceptionWithDelay(int currentErrorDelay)
    Handles exceptions where a delay is required to prevent a Thread from entering a tight loop which will consume CPU and may also trigger large amounts of logging.
    void
    run()
     
    void
    stop(int waitSeconds)
    Deprecated.
    Unused.
    void
    stopMillis(int waitMilliseconds)
    Stops the acceptor, optionally waiting for it to finish.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

  • Constructor Details

    • Acceptor

      public Acceptor(AbstractEndpoint<?,U> endpoint)
      Constructs a new Acceptor.
      Parameters:
      endpoint - The endpoint associated with this acceptor

  • Method Details

    • getState

      public final Acceptor.AcceptorState getState()
      Returns the current state of the acceptor.
      Returns:
      The current acceptor state

    • run

      public void run()
      Specified by:
      run in interface Runnable

    • stop

      @Deprecated public void stop(int waitSeconds)
      Deprecated.
      Unused. Will be remove in Tomcat 11 onwards.
      Signals the Acceptor to stop, optionally waiting for that stop process to complete before returning. If a wait is requested and the stop does not complete in that time a warning will be logged.
      Parameters:
      waitSeconds - The time to wait in seconds. Use a value less than zero for no wait.

    • stopMillis

      public void stopMillis(int waitMilliseconds)
      Stops the acceptor, optionally waiting for it to finish.
      Parameters:
      waitMilliseconds - The number of milliseconds to wait for the acceptor to stop

    • handleExceptionWithDelay

      protected int handleExceptionWithDelay(int currentErrorDelay)
      Handles exceptions where a delay is required to prevent a Thread from entering a tight loop which will consume CPU and may also trigger large amounts of logging. For example, this can happen if the ulimit for open files is reached.
      Parameters:
      currentErrorDelay - The current delay being applied on failure
      Returns:
      The delay to apply on the next failure