Examples of Daemon

com.sun.akuma.Daemon
orm initialization as a daemon // this involves in closing file descriptors, recording PIDs, etc. d. {@linkplain #init() init}(); } else { // if you are already daemonized, no point in daemonizing yourself again, // so do this only when you aren't daemonizing. if(you decide to launch a copy into background) { d.daemonize(...); System.exit(0); } } // your normal main code follows // this part can be executed in two ways // 1) the user runs your process in the foreground // 2) you decided to daemonize yourself, in which case the newly forked daemon will execute this code, // while the originally executed foreground Java process exits before it gets here. ... }
Alternatively, your main class can extend from Daemon, so that you can customize some of the behaviors. @author Kohsuke Kawaguchi
org.apache.accumulo.core.util.Daemon
org.apache.accumulo.fate.util.Daemon
org.apache.hadoop.util.Daemon
A thread that has called {@link Thread#setDaemon(boolean) } with true.
org.apache.jetspeed.daemon.Daemon
A simple interface to create Daemons within Jetspeed. These are basically threads that get work done to facilitate content serving. @author Kevin A. Burton @version $Id: Daemon.java,v 1.9 2004/02/23 02:48:57 jford Exp $
org.codehaus.mojo.appassembler.model.Daemon
org.eclipse.jgit.transport.Daemon
e> transport protocol.
org.gradle.launcher.daemon.server.Daemon
A long-lived build server that accepts commands via a communication channel.
Daemon instances are single use and have a start/stop debug. They are also threadsafe.
See {@link org.gradle.launcher.daemon.client.DaemonClient} for a description of the daemon communication protocol.
org.skife.gressil.Daemon
org.uberfire.java.nio.fs.jgit.daemon.git.Daemon
e> transport protocol.
se.rupy.http.Daemon
A tiny HTTP daemon. The whole server is non-static so that you can launch multiple contained HTTP servers in one application on different ports. @author marc

Examples of org.apache.hadoop.util.Daemon

    final File tmpDir = sd.getFinalizedTmp();
    // rename previous to tmp
    rename(prevDir, tmpDir);


    // delete tmp dir in a separate thread
    new Daemon(new Runnable() {
        public void run() {
          try {
            deleteDir(tmpDir);
          } catch(IOException ex) {
            LOG.error("Finalize upgrade for " + dataDirPath + " failed.", ex);

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Examples of org.apache.hadoop.util.Daemon

    selfAddr = new InetSocketAddress(ss.getInetAddress().getHostAddress(),
                                     tmpPort);
    LOG.info("Opened info server at " + tmpPort);
      
    this.threadGroup = new ThreadGroup("dataXceiverServer");
    this.dataXceiverServer = new Daemon(threadGroup, 
        new DataXceiverServer(ss, conf, this));
    this.threadGroup.setDaemon(true); // auto destroy when empty
  }

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Examples of org.apache.hadoop.util.Daemon

  public BlockRecoveryInfo startBlockRecovery(int namespaceId, Block block) throws IOException {
    return data.startBlockRecovery(namespaceId, block.getBlockId());
  }


  public Daemon recoverBlocks(final int namespaceId, final Block[] blocks, final DatanodeInfo[][] targets) {
    Daemon d = new Daemon(threadGroup, new Runnable() {
      /** Recover a list of blocks. It is run by the primary datanode. */
      public void run() {
        for(int i = 0; i < blocks.length; i++) {
          try {
            logRecoverBlock("NameNode", namespaceId, blocks[i], targets[i]);
            recoverBlock(namespaceId, blocks[i], false, targets[i], true, 0);
          } catch (IOException e) {
            LOG.warn("recoverBlocks FAILED, blocks[" + i + "]=" + blocks[i], e);
          }
        }
      }
    });
    d.start();
    return d;
  }

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Examples of org.apache.hadoop.util.Daemon

    final File tmpDir = sd.getFinalizedTmp();
    // rename previous to tmp
    rename(prevDir, tmpDir);


    // delete tmp dir in a separate thread
    new Daemon(new Runnable() {
        public void run() {
          try {
            deleteDir(tmpDir);
          } catch(IOException ex) {
            LOG.error("Finalize upgrade for " + dataDirPath + " failed.", ex);

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Examples of org.apache.hadoop.util.Daemon

      // write data chunk header
      if (!finalized) {
        BlockMetadataHeader.writeHeader(checksumOut, checksum);
      }
      if (clientName.length() > 0) {
        responder = new Daemon(datanode.threadGroup, 
                               new PacketResponder(this, block, mirrIn, 
                                                   replyOut, numTargets,
                                                   Thread.currentThread()));
        responder.start(); // start thread to processes reponses
      }

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Examples of org.apache.hadoop.util.Daemon

  public void run() {
    while (datanode.shouldRun) {
      try {
        Socket s = ss.accept();
        
        new Daemon(datanode.threadGroup, 
            new DataXceiver(s, datanode, this)).start();
        InjectionHandler.processEvent(
            InjectionEvent.AVATARXEIVER_RUNTIME_FAILURE);
      } catch (SocketTimeoutException ignored) {
        // wake up to see if should continue to run

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Examples of org.apache.hadoop.util.Daemon

      }
      leaseManager.startMonitor();
      startSecretManagerIfNecessary();


      //ResourceMonitor required only at ActiveNN. See HDFS-2914
      this.nnrmthread = new Daemon(new NameNodeResourceMonitor());
      nnrmthread.start();
    } finally {
      writeUnlock();
    }
  }

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Examples of org.apache.hadoop.util.Daemon

        return;
      }
      // start monitor
      reached = now();
      if (smmthread == null) {
        smmthread = new Daemon(new SafeModeMonitor());
        smmthread.start();
        reportStatus("STATE* Safe mode extension entered.", true);
      }


      // check if we are ready to initialize replication queues

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Examples of org.apache.hadoop.util.Daemon

    return staleInterval;
  }
  
  void activate(final Configuration conf) {
    final DecommissionManager dm = new DecommissionManager(namesystem, blockManager);
    this.decommissionthread = new Daemon(dm.new Monitor(
        conf.getInt(DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_INTERVAL_KEY, 
                    DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_INTERVAL_DEFAULT),
        conf.getInt(DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_KEY, 
                    DFSConfigKeys.DFS_NAMENODE_DECOMMISSION_NODES_PER_INTERVAL_DEFAULT)));
    decommissionthread.start();

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Examples of org.apache.hadoop.util.Daemon

    streamingAddr = new InetSocketAddress(ss.getInetAddress().getHostAddress(),
                                     ss.getLocalPort());


    LOG.info("Opened streaming server at " + streamingAddr);
    this.threadGroup = new ThreadGroup("dataXceiverServer");
    this.dataXceiverServer = new Daemon(threadGroup, 
        new DataXceiverServer(ss, conf, this));
    this.threadGroup.setDaemon(true); // auto destroy when empty
  }

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