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## 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)

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Copyright © 2011 The Apache Software Foundation