@Override
public void serialize(DataOutput out) throws IOException {
// little endian
for (long w : bitmap) {
out.writeLong(Long.reverseBytes(w));
}
}
/**
* Converts a byte array to a long value considering it was written in big-endian format.
*
* @param bytes byte array
* @param offset offset into array
* @return the long value
*/
public static long toLong(byte[] bytes, int offset) {
if (littleEndian) {
return Long.reverseBytes(theUnsafe.getLong(bytes, offset + BYTE_ARRAY_BASE_OFFSET));
} else {
return theUnsafe.getLong(bytes, offset + BYTE_ARRAY_BASE_OFFSET);
}
}
/**
* Put a long value out to the specified byte array position in big-endian format.
*
* @param bytes the byte array
* @param offset position in the array
* @param val long to write out
* @return incremented offset
*/
public static int putLong(byte[] bytes, int offset, long val) {
if (littleEndian) {
val = Long.reverseBytes(val);
}
theUnsafe.putLong(bytes, offset + BYTE_ARRAY_BASE_OFFSET, val);
return offset + Bytes.SIZEOF_LONG;
}
@Override
public long readLong() throws IOException {
long l = this.stream.readLong();
if (endianness == ByteOrder.LITTLE_ENDIAN) {
l = Long.reverseBytes(l);
}
return l;
}
@Override
public void deserialize(DataInput in) throws IOException {
// little endian
this.cardinality = 0;
for (int k = 0; k < bitmap.length; ++k) {
bitmap[k] = Long.reverseBytes(in.readLong());
this.cardinality += Long.bitCount(bitmap[k]);
}
}
/**
* Put a long value out to the specified BB position in big-endian format.
*
* @param buf the byte buffer
* @param offset position in the buffer
* @param val long to write out
* @return incremented offset
*/
public static int putLong(ByteBuffer buf, int offset, long val) {
if (littleEndian) {
val = Long.reverseBytes(val);
}
if (buf.isDirect()) {
theUnsafe.putLong(((DirectBuffer) buf).address() + offset, val);
} else {
theUnsafe.putLong(buf.array(), BYTE_ARRAY_BASE_OFFSET + buf.arrayOffset() + offset, val);
}
return offset + Bytes.SIZEOF_LONG;
}
/**
* Reads a long value at the given Object's offset considering it was written in big-endian
* format.
*
* @param ref
* @param offset
* @return long value at offset
*/
public static long toLong(Object ref, long offset) {
if (littleEndian) {
return Long.reverseBytes(theUnsafe.getLong(ref, offset));
}
return theUnsafe.getLong(ref, offset);
}
/**
* Reads a long value at the given buffer's offset considering it was written in big-endian
* format.
*
* @param buf
* @param offset
* @return long value at offset
*/
public static long toLong(ByteBuffer buf, int offset) {
if (littleEndian) {
return Long.reverseBytes(getAsLong(buf, offset));
}
return getAsLong(buf, offset);
}
public long test_long_reversed(long i) {
return Long.reverseBytes(i);
}
public void test_copy_longs_store_reversed(long[] dst, long[] src) {
for (int i = 0; i < src.length; i++) {
dst[i] = Long.reverseBytes(1 + src[i]);
}
}
@Override
protected void _setLong(int index, long value) {
PlatformDependent.putLong(addr(index), NATIVE_ORDER ? value : Long.reverseBytes(value));
}
@Override
protected long _getLong(int index) {
long v = PlatformDependent.getLong(addr(index));
return NATIVE_ORDER ? v : Long.reverseBytes(v);
}
@Override
public long readLong() throws IOException {
final long v = dataInput.readLong();
return bigEndian() ? v : Long.reverseBytes(v);
}
@Override
public void putLongLittleEndian(byte[] array, int offset, long value) {
// Reverse the order of the bytes before storing, since we're on big-endian hardware.
long littleEndianValue = Long.reverseBytes(value);
theUnsafe.putLong(array, (long) offset + BYTE_ARRAY_BASE_OFFSET, littleEndianValue);
}
@Override
public long getLongLittleEndian(byte[] array, int offset) {
long bigEndian = theUnsafe.getLong(array, (long) offset + BYTE_ARRAY_BASE_OFFSET);
// The hardware is big-endian, so we need to reverse the order of the bytes.
return Long.reverseBytes(bigEndian);
}
