Examples of CircularFifoBuffer

org.apache.commons.collections.buffer.CircularFifoBuffer
CircularFifoBuffer is a first in first out buffer with a fixed size that replaces its oldest element if full.
The removal order of a CircularFifoBuffer is based on the insertion order; elements are removed in the same order in which they were added. The iteration order is the same as the removal order.
The {@link #add(Object)}, {@link #remove()} and {@link #get()} operationsall perform in constant time. All other operations perform in linear time or worse.
Note that this implementation is not synchronized. The following can be used to provide synchronized access to your CircularFifoBuffer:
```
 Buffer fifo = BufferUtils.synchronizedBuffer(new CircularFifoBuffer()); 
```
This buffer prevents null objects from being added.
This class is Serializable from Commons Collections 3.1. @since Commons Collections 3.0 @version $Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $ @author Stefano Fornari @author Stephen Colebourne

Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

  public DbusLogAccumulator() {
    this(MAX_NUMBER_OF_LOG_MSGS);
  }


  public DbusLogAccumulator(int maxNumberMsgs) {
    _msgs = new CircularFifoBuffer(maxNumberMsgs);
    reset();
  }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

  public NthLastModifiedTimeTracker(int numTimesToTrack) {
    if (numTimesToTrack < 1) {
      throw new IllegalArgumentException(
          "numTimesToTrack must be greater than zero (you requested " + numTimesToTrack + ")");
    }
    lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
    initLastModifiedTimesMillis();
  }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

public class NotificationList<T>  {
  private static NotificationList<String> nl = null;
  private static Buffer list = null;
  
  private NotificationList() {  
    list = BufferUtils.synchronizedBuffer(new CircularFifoBuffer(10));
  }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

  public NthLastModifiedTimeTracker(int numTimesToTrack) {
    if (numTimesToTrack < 1) {
      throw new IllegalArgumentException(
          "numTimesToTrack must be greater than zero (you requested " + numTimesToTrack + ")");
    }
    lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
    initLastModifiedTimesMillis();
  }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

    public NthLastModifiedTimeTracker(int numTimesToTrack) {
        if (numTimesToTrack < 1) {
            throw new IllegalArgumentException("numTimesToTrack must be greater than zero (you requested "
                + numTimesToTrack + ")");
        }
        lastModifiedTimesMillis = new CircularFifoBuffer(numTimesToTrack);
        initLastModifiedTimesMillis();
    }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

      // this can happen if the first value is an error and then real values arrive. this is possible if market
      // data subscriptions take time to set up. in that case the history will initially be null (because error
      // sentinel types aren't in s_historyTypes) and then when a valid value arrives the type can be checked and
      // history created if required
      if (_history == null && s_historyTypes.contains(latestValue.getClass())) {
        _history = new CircularFifoBuffer(MAX_HISTORY_SIZE);
      }
      if (_history != null) {
        _history.add(latestValue);
      }
    }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

    this(10);
  }


  public PeekQueueGuage(final int size) {
    this.size = size;
    this.buffer = new CircularFifoBuffer(size);
  }

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

    this.col = col;
    
    // initialize all buffers 
    this.timeMeasureMapGlobal = new ConcurrentHashMap<TimeMeasureItemGlobal, CircularFifoBuffer>();
    for (TimeMeasureItemGlobal timeMeasureItem : TimeMeasureItemGlobal.values()) {
      this.timeMeasureMapGlobal.put(timeMeasureItem, new CircularFifoBuffer(this.configuredFps * SECONDS));
    }
    this.timeMeasureMapOutput = new ConcurrentHashMap<IOutput, Map<TimeMeasureItemOutput, CircularFifoBuffer>>();
    this.outputList = new ArrayList<IOutput>();


    startTime = System.currentTimeMillis();

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Examples of org.apache.commons.collections.buffer.CircularFifoBuffer

      this.timeMeasureMapOutput.put(output, new HashMap<TimeMeasureItemOutput, CircularFifoBuffer>());
      this.outputList.add(output);
    }
    // make sure a circularFifoBuffer instance was construct for the given outputValueEnum
    if (!this.timeMeasureMapOutput.get(output).containsKey(timeMeasureItem)) {
      this.timeMeasureMapOutput.get(output).put(timeMeasureItem, new CircularFifoBuffer(this.configuredFps * SECONDS));
    }
    // add time to internal buffer instance
    this.timeMeasureMapOutput.get(output).get(timeMeasureItem).add(time);
  }

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