Examples of com.esotericsoftware.kryo.io.UnsafeOutput

com.esotericsoftware.kryo.io.UnsafeOutput
An optimized OutputStream that buffers data in a byte array and optionally flushes to another OutputStream. Utility methods are provided for efficiently writing primitive types, arrays of primitive types and strings. It uses @link{java.misc.Unsafe} to achieve a very good performance.
Important notes:
This class increases performance, but may result in bigger size of serialized representation.
Bulk operations, e.g. on arrays of primitive types, are always using native byte order.
Fixed-size int, long, short, float and double elements are always written using native byte order.
Best performance is achieved if no variable length encoding for integers is used.
Output serialized using this class should always be deserilized using @link{UnsafeInput}

      this.len = len;
    }


    final public void write (Output output, Object object) {
      if (output instanceof UnsafeOutput) {
        UnsafeOutput unsafeOutput = (UnsafeOutput)output;
        unsafeOutput.writeBytes(object, offset, len);
      } else if (output instanceof UnsafeMemoryOutput) {
        UnsafeMemoryOutput unsafeOutput = (UnsafeMemoryOutput)output;
        unsafeOutput.writeBytes(object, offset, len);
      } else {
        long off;
        Unsafe unsafe = unsafe();
        for (off = offset; off < offset + len - 8; off += 8) {
          output.writeLong(unsafe.getLong(object, off));

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    return (isUnsafe)? new UnsafeInput(inputStream, bufferSize) : new Input(inputStream, bufferSize);
  }


  @Override
  public Output getOutput() {
    return (isUnsafe)? new UnsafeOutput() : new Output();
  }

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    return (isUnsafe)? new UnsafeOutput() : new Output();
  }


  @Override
  public Output getOutput(int bufferSize) {
    return (isUnsafe)? new UnsafeOutput(bufferSize) : new Output(bufferSize);
  }

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    return (isUnsafe)? new UnsafeOutput(bufferSize) : new Output(bufferSize);
  }


  @Override
  public Output getOutput(int bufferSize, int maxBufferSize) {
    return (isUnsafe)? new UnsafeOutput(bufferSize, maxBufferSize) : new Output(bufferSize, maxBufferSize);
  }

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    return (isUnsafe)? new UnsafeOutput(bufferSize, maxBufferSize) : new Output(bufferSize, maxBufferSize);
  }


  @Override
  public Output getOutput(byte[] buffer) {
    return (isUnsafe)? new UnsafeOutput(buffer) : new Output(buffer);
  }

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    return (isUnsafe)? new UnsafeOutput(buffer) : new Output(buffer);
  }


  @Override
  public Output getOutput(byte[] buffer, int maxBufferSize) {
    return (isUnsafe)? new UnsafeOutput(buffer, maxBufferSize) : new Output(buffer, maxBufferSize);
  }

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    return (isUnsafe)? new UnsafeOutput(buffer, maxBufferSize) : new Output(buffer, maxBufferSize);
  }


  @Override
  public Output getOutput(OutputStream outputStream) {
    return (isUnsafe)? new UnsafeOutput(outputStream) : new Output(outputStream);
  }

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    return (isUnsafe)? new UnsafeOutput(outputStream) : new Output(outputStream);
  }


  @Override
  public Output getOutput(OutputStream outputStream, int bufferSize) {
    return (isUnsafe)? new UnsafeOutput(outputStream, bufferSize) : new Output(outputStream, bufferSize);
  }

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/** @author Nathan Sweet <misc@n4te.com> */
public class UnsafeInputOutputTest extends KryoTestCase {
  public void testOutputStream () throws IOException {
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    UnsafeOutput output = new UnsafeOutput(buffer, 2);
    output.writeBytes(new byte[] {11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26});
    output.writeBytes(new byte[] {31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46});
    output.writeBytes(new byte[] {51, 52, 53, 54, 55, 56, 57, 58});
    output.writeBytes(new byte[] {61, 62, 63, 64, 65});
    output.flush();


    assertEquals(new byte[] { //
      11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, //
        31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, //
        51, 52, 53, 54, 55, 56, 57, 58, //

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    System.arraycopy(temp, 512, temp2, 0, count);
    assertEquals(bytes, temp2);
  }


  public void testWriteBytes () throws IOException {
    UnsafeOutput buffer = new UnsafeOutput(512);
    buffer.writeBytes(new byte[] {11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26});
    buffer.writeBytes(new byte[] {31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46});
    buffer.writeByte(51);
    buffer.writeBytes(new byte[] {52, 53, 54, 55, 56, 57, 58});
    buffer.writeByte(61);
    buffer.writeByte(62);
    buffer.writeByte(63);
    buffer.writeByte(64);
    buffer.writeByte(65);
    buffer.flush();


    assertEquals(new byte[] { //
      11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, //
        31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, //
        51, 52, 53, 54, 55, 56, 57, 58, //
        61, 62, 63, 64, 65}, buffer.toBytes());
  }

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