import net.imglib2.img.basictypeaccess.ByteAccess;
import net.imglib2.img.basictypeaccess.array.ByteArray;

public class ByteAccessCopyTest
{

	public static void main( final String args[] )
	{
		final int iterations = 100000;

		final int size = 1000000;

		final ByteArray source = new ByteArray( size );
		final ByteArray target = new ByteArray( size );

		for ( int i = 0; i < iterations; ++i )
		{
			copy( source, target, size );
		}

		final long tStartAccessCopy = System.nanoTime();
		for ( int i = 0; i < iterations; ++i )
		{
			copy( source, target, size );
		}
		final long tStopAccessCopy = System.nanoTime();
		final long tAccessCopy = tStopAccessCopy - tStartAccessCopy;

		for ( int i = 0; i < iterations; ++i )
		{
			System.arraycopy( source.getCurrentStorageArray(), 0, target.getCurrentStorageArray(), 0, size );
		}

		final long tStartArraycopy = System.nanoTime();
		final byte[] sourceArr = source.getCurrentStorageArray();
		final byte[] targetArr = target.getCurrentStorageArray();
		for ( int i = 0; i < iterations; ++i )
		{
			System.arraycopy( sourceArr, 0, targetArr, 0, size );
		}
		final long tStopArraycopy = System.nanoTime();
		final long tArraycopy = tStopArraycopy - tStartArraycopy;

		System.out.println( "access copy: " + tAccessCopy * 1.0 / iterations );
		System.out.println( "array  copy: " + tArraycopy * 1.0 / iterations );

	}

	private static final void copy( final ByteAccess source, final ByteAccess target, final int size )
	{
		for ( int i = 0; i < size; ++i )
		{
			target.setValue( i, source.getValue( i ) );
		}
	}

}