File	Doc	Category	Size	Date	Package
DirectByteBuffers.java	API Doc	Android 1.5 API	3298	Wed May 06 22:41:04 BST 2009	java.nio

DirectByteBuffers

• java.lang.Object

Fields Summary

Constructors Summary

Methods Summary
public static void	free(java.nio.ByteBuffer directBuffer) Explicitly frees the memory used by the given direct byte buffer. If the memory is known to already have been freed then this is a no-op. Once the memory has been freed then operations requiring access to the memory will throw an IllegalStateException. Note this is is possible that the memory is freed by code that reaches into the address and explicitly frees it 'beneith' us -- this is bad form. param directBuffer the direct byte buffer memory to free throws IllegalArgumentException if the buffer is null or is not a direct byte buffer. if ((directBuffer == null) || (!directBuffer.isDirect())) { throw new IllegalArgumentException(); } DirectByteBuffer buf = (DirectByteBuffer) directBuffer; buf.free();
public static org.apache.harmony.luni.platform.PlatformAddress	getEffectiveAddress(java.nio.ByteBuffer directBuffer) Returns the platform address of the start of this buffer instance. You must not attempt to free the returned address!! It may not be an address that was explicitly malloc'ed (i.e. if this buffer is the result of a split); and it may be memory shared by multiple buffers. If you can guarantee that you want to free the underlying memory call the #free() method on this instance -- generally applications will rely on the garbage collector to autofree this memory. param directBuffer the direct byte buffer return the effective address of the start of the buffer. throws IllegalStateException if this buffer address is known to have been freed previously. return toDirectBuffer(directBuffer).getEffectiveAddress();
private static java.nio.DirectByteBuffer	toDirectBuffer(java.nio.ByteBuffer directBuffer) if ((directBuffer == null) || (!directBuffer.isDirect())) { throw new IllegalArgumentException(); } return (DirectByteBuffer) directBuffer;