Class ByteBuffer
- java.lang.Object
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- org.apache.sysds.runtime.controlprogram.caching.ByteBuffer
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public class ByteBuffer extends Object
Wrapper for WriteBuffer byte array per matrix/frame in order to support matrix/frame serialization outside global lock.
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Constructor Summary
Constructors Constructor Description ByteBuffer(long size)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description voidcheckSerialized()CacheBlockdeserializeBlock()voidevictBuffer(String fname)voidfreeMemory()longgetSize()Returns the buffer size in bytes.booleanisShallow()static booleanisValidCapacity(long size, CacheBlock cb)Determines if byte buffer can hold the given size given this specific cache block.voidserializeBlock(CacheBlock cb)
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Method Detail
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serializeBlock
public void serializeBlock(CacheBlock cb) throws IOException
- Throws:
IOException
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deserializeBlock
public CacheBlock deserializeBlock() throws IOException
- Throws:
IOException
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evictBuffer
public void evictBuffer(String fname) throws IOException
- Throws:
IOException
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getSize
public long getSize()
Returns the buffer size in bytes.- Returns:
- buffer size in bytes
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isShallow
public boolean isShallow()
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freeMemory
public void freeMemory()
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checkSerialized
public void checkSerialized()
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isValidCapacity
public static boolean isValidCapacity(long size, CacheBlock cb)Determines if byte buffer can hold the given size given this specific cache block. This call is consistent with 'serializeBlock' and allows for internal optimization according to dense/sparse representation.- Parameters:
size- the sizecb- cache block- Returns:
- true if valid capacity
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