org.apache.cassandra.cache
Class FreeableMemory

java.lang.Object
  com.sun.jna.Pointer
      com.sun.jna.Memory
          org.apache.cassandra.cache.FreeableMemory

public class FreeableMemory
extends com.sun.jna.Memory

Field Summary

Fields inherited from class com.sun.jna.Memory

size

Fields inherited from class com.sun.jna.Pointer

NULL, peer, SIZE

Constructor Summary

FreeableMemory(long size)

Method Summary

protected void	finalize() avoid re-freeing already-freed memory
byte	getValidByte(long offset)
boolean	reference()
void	unreference() decrement reference count.

Methods inherited from class com.sun.jna.Memory

align, boundsCheck, clear, free, getByte, getByteBuffer, getChar, getDouble, getFloat, getInt, getLong, getPointer, getShort, getSize, getString, isValid, malloc, purge, read, read, read, read, read, read, read, setByte, setChar, setDouble, setFloat, setInt, setLong, setPointer, setShort, setString, share, share, size, toString, valid, write, write, write, write, write, write, write

Methods inherited from class com.sun.jna.Pointer

clear, createConstant, createConstant, equals, getByteArray, getCharArray, getDoubleArray, getFloatArray, getIntArray, getLongArray, getNativeLong, getPointerArray, getPointerArray, getShortArray, getString, getStringArray, getStringArray, getStringArray, getStringArray, hashCode, indexOf, nativeValue, nativeValue, read, setMemory, setNativeLong, setString, write

Methods inherited from class java.lang.Object

clone, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

FreeableMemory

public FreeableMemory(long size)

Method Detail

reference

public boolean reference()

Returns:

true if we succeed in referencing before the reference count reaches zero. (A FreeableMemory object is created with a reference count of one.)

unreference

public void unreference()

decrement reference count. if count reaches zero, the object is freed.

finalize

protected void finalize()

avoid re-freeing already-freed memory

Overrides:

finalize in class com.sun.jna.Memory

getValidByte

public byte getValidByte(long offset)