| public abstract CreateWriter ( Stream stream ) : ObjectWriter | ||
| stream | Stream | |
| return | ObjectWriter | |
public static void SerializePersonTest(Person person, ObjectReaderWriterFactory factory)
{
using (MemoryStream stream = new MemoryStream())
{
SerializePerson(person, factory.CreateWriter(stream));
byte[] serialized = stream.ToArray();
#if DEBUG
string writeDump = serialized.ToAsciiDumpString();
Debug.WriteLine(writeDump);
#endif
Test.Output("{0} writer wrote {1} bytes", factory.Name, serialized.Length);
// Deserializer 1
stream.Position = 0;
DeserializePerson1(factory.CreateReader(stream));
// Deserializer 2
stream.Position = 0;
DeserializePerson2(factory.CreateReader(stream));
}
}
private void TestComplexObjectSerialization(
ObjectReaderWriterFactory factory)
{
const int BufferSizeInBytes = 64 * 1024;
Stopwatch writeStopWatch = new Stopwatch();
Stopwatch readStopWatch = new Stopwatch();
ComplexObject writeObject = ComplexObject.Create();
byte[] serialized;
var writerInspector = new TestSerializationInspector();
// Serialize the test object to a byte array
using (var stream = new MemoryStream(BufferSizeInBytes))
{
var writer = factory.CreateWriter(stream);
writer.Inspector = writerInspector;
writeStopWatch.Start();
ComplexObject.WriteTo(writer, writeObject);
writeStopWatch.Stop();
serialized = stream.ToArray();
}
//string writeDump = serialized.ToAsciiDumpString();
//Debug.WriteLine(writeDump);
Test.Output("{0} writer wrote {1} bytes in {2}ms", factory.Name, serialized.Length, writeStopWatch.ElapsedMilliseconds);
// Validate inspector stream
byte[] writerInspectorBytes = writerInspector.ToByteArray();
if (!ArrayComparer<byte>.Equals(writerInspectorBytes, serialized))
{
throw new InvalidOperationException("ISerializationInspector byte stream does not match the serialized byte stream.");
}
var readerInspector = new TestSerializationInspector();
ComplexObject readObject = null;
// Deserialize the test object from a byte array
using (var stream = new MemoryStream(serialized))
{
var reader = factory.CreateReader(stream);
reader.Inspector = readerInspector;
readStopWatch.Start();
readObject = ComplexObject.ReadFrom(reader);
readStopWatch.Stop();
}
Test.Output("{0} reader read {1} bytes in {2}ms", factory.Name, serialized.Length, readStopWatch.ElapsedMilliseconds);
// Serialize the deserialized object for comparison
byte[] deserialized;
using (var stream = new MemoryStream(BufferSizeInBytes))
{
var writer = factory.CreateWriter(stream);
ComplexObject.WriteTo(writer, readObject);
deserialized = stream.ToArray();
}
// Compare serialized values
if (!ArrayComparer<byte>.Equals(serialized, deserialized))
{
throw new Exception("Serialized and deserialized streams do not match.");
}
// Compare objects
writeObject.VerifyIsEqual(readObject);
// Validate inspector stream
byte[] readerInspectorBytes = readerInspector.ToByteArray();
if (!ArrayComparer<byte>.Equals(readerInspectorBytes, serialized))
{
throw new InvalidOperationException("ISerializationInspector byte stream does not match the serialized byte stream.");
}
}
public void TestComplexObjectPerformance(
ObjectReaderWriterFactory factory)
{
const int WarmupIterations = 10;
const int Iterations = 100;
Stopwatch writeStopWatch = new Stopwatch();
byte[] buffer = new byte[128 * 1024];
byte[] serialized;
ComplexObject writeObject = ComplexObject.Create();
// Serialize the test object to a byte array
using (var stream = new MemoryStream(buffer))
{
IObjectWriter writer;
GC.Collect(3, GCCollectionMode.Forced, true);
// Warm-up
for (int i = 0; i < WarmupIterations; i += 1)
{
stream.SetLength(0);
writer = factory.CreateWriter(stream);
ComplexObject.WriteTo(writer, writeObject);
}
writeStopWatch.Start();
for (int i = 0; i < Iterations; i += 1)
{
stream.SetLength(0);
writer = factory.CreateWriter(stream);
ComplexObject.WriteTo(writer, writeObject);
}
writeStopWatch.Stop();
serialized = stream.ToArray();
}
Test.Output("{0} writer serialized {1} complex objects ({2:#,###} bytes each) in {3} ms ({4} ticks @ {5}). Average is {6} ticks per object.",
factory.Name, Iterations, serialized.Length, writeStopWatch.Elapsed.TotalMilliseconds, writeStopWatch.ElapsedTicks, Stopwatch.Frequency, writeStopWatch.ElapsedTicks / Iterations);
Stopwatch readStopWatch = new Stopwatch();
ComplexObject readObject = null;
// Deserialize the test object from a byte array
using (var stream = new MemoryStream(serialized))
{
IObjectReader reader;
// Warm-up
for (int i = 0; i < WarmupIterations; i += 1)
{
stream.Seek(0, SeekOrigin.Begin);
reader = factory.CreateReader(stream);
readObject = ComplexObject.ReadFrom(reader);
}
readStopWatch.Start();
for (int i = 0; i < Iterations; i += 1)
{
stream.Seek(0, SeekOrigin.Begin);
reader = factory.CreateReader(stream);
readObject = ComplexObject.ReadFrom(reader);
}
readStopWatch.Stop();
}
Test.Output("{0} reader deserialized {1} complex objects ({2:#,###} bytes each) in {3} ms ({4} ticks @ {5}). Average is {6} ticks per object.",
factory.Name, Iterations, serialized.Length, readStopWatch.Elapsed.TotalMilliseconds, readStopWatch.ElapsedTicks, Stopwatch.Frequency, readStopWatch.ElapsedTicks / Iterations);
// Compare objects
writeObject.VerifyIsEqual(readObject);
}