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java.lang.Objectorg.infinispan.marshall.AdaptiveBufferSizePredictor
public class AdaptiveBufferSizePredictor
The BufferSizePredictor
that automatically increases and
decreases the predicted buffer size on feed back.
It gradually increases the expected number of bytes if the previous buffer fully filled the allocated buffer. It gradually decreases the expected number of bytes if the read operation was not able to fill a certain amount of the allocated buffer two times consecutively. Otherwise, it keeps returning the same prediction. TODO: Object type hints could be useful at giving more type-specific predictions
Constructor Summary | |
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AdaptiveBufferSizePredictor()
Creates a new predictor with the default parameters. |
|
AdaptiveBufferSizePredictor(int minimum,
int initial,
int maximum)
Creates a new predictor with the specified parameters. |
Method Summary | |
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int |
nextSize(Object obj)
Provide the next buffer size taking in account the object to store in the buffer. |
void |
recordSize(int previousSize)
Record the size of the of data in the last buffer used. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AdaptiveBufferSizePredictor()
512
, does not
go down below 16
, and does not go up above 65536
.
public AdaptiveBufferSizePredictor(int minimum, int initial, int maximum)
minimum
- the inclusive lower bound of the expected buffer sizeinitial
- the initial buffer size when no feed back was receivedmaximum
- the inclusive upper bound of the expected buffer sizeMethod Detail |
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public int nextSize(Object obj)
BufferSizePredictor
nextSize
in interface BufferSizePredictor
obj
- instance that will be stored in the buffer
public void recordSize(int previousSize)
BufferSizePredictor
recordSize
in interface BufferSizePredictor
previousSize
- int representing the size of the last
object buffered.
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