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add partial reset() method #183

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merged 1 commit into from
Sep 24, 2019
Merged

add partial reset() method #183

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19 changes: 19 additions & 0 deletions agrona/src/main/java/org/agrona/nio/NioSelectedKeySet.java
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,25 @@ public void reset()
size = 0;
}

/**
* Reset for next iteration, having only processed a subset of the selection keys.
*
* The <code>NioSelectedKeySet</code> will still contain the keys representing IO events after
* the numberOfProcessedKeys and these events can be processed in a future iteration.
*
* @param numberOfProcessedKeys the number of keys that have been processed.
*/
public void reset(final int numberOfProcessedKeys)
{
final SelectionKey[] keys = this.keys;
final int initialSize = this.size;
final int newSize = initialSize - numberOfProcessedKeys;

System.arraycopy(keys, numberOfProcessedKeys, keys, 0, newSize);

this.size = newSize;
}

/**
* Iterate over the key set and apply the given function.
*
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