public ObjectWriter(Stream stream, Action<object> preSerializationCallback = null,
Action<object> postSerializationCallback = null, IDictionary<Type, Action<ObjectWriter, PrimitiveWriter, object>> writeMethods = null,
SwapList surrogatesForObjects = null, bool isGenerating = true, bool treatCollectionAsUserObject = false,
bool useBuffering = true, bool disableStamping = false, ReferencePreservation referencePreservation = ReferencePreservation.Preserve)
{
if(surrogatesForObjects == null)
{
surrogatesForObjects = new SwapList();
}
currentlyWrittenTypes = new Stack<Type>();
this.writeMethods = writeMethods ?? new Dictionary<Type, Action<ObjectWriter, PrimitiveWriter, object>>();
postSerializationHooks = new List<Action>();
this.isGenerating = isGenerating;
this.treatCollectionAsUserObject = treatCollectionAsUserObject;
this.surrogatesForObjects = surrogatesForObjects;
types = new IdentifiedElementsDictionary<TypeDescriptor>(this);
Methods = new IdentifiedElementsDictionary<MethodDescriptor>(this);
Assemblies = new IdentifiedElementsDictionary<AssemblyDescriptor>(this);
Modules = new IdentifiedElementsDictionary<ModuleDescriptor>(this);
this.preSerializationCallback = preSerializationCallback;
this.postSerializationCallback = postSerializationCallback;
writer = new PrimitiveWriter(stream, useBuffering);
this.referencePreservation = referencePreservation;
if(referencePreservation == ReferencePreservation.Preserve)
{
identifier = new ObjectIdentifier();
}
touchTypeMethod = disableStamping ? (Func<Type, int>)TouchAndWriteTypeIdWithSimpleStamp : TouchAndWriteTypeIdWithFullStamp;
}
public override void Save(PrimitiveWriter writer)
{
var present = Placeholder != null;
writer.Write(present);
if(present)
{
writer.Write(Placeholder);
}
}
public void Save(PrimitiveWriter writer)
{
writer.Write(Id);
writer.Write(Message);
writer.Write(SourceId);
writer.Write(ThreadId ?? -1);
writer.Write(Time.Ticks);
writer.Write(numericLogLevel);
}
public void ReuseWithNewStream(Stream stream)
{
postSerializationHooks.Clear();
types.Clear();
Methods.Clear();
Assemblies.Clear();
Modules.Clear();
writer = new PrimitiveWriter(stream, writer.IsBuffered);
identifier.Clear();
}
public void Save(PrimitiveWriter writer)
{
var globalStopwatch = Stopwatch.StartNew();
var realSegmentsCount = 0;
// magic
writer.Write(Magic);
// saving size of the memory segment
writer.Write(SegmentSize);
// saving size of the memory
writer.Write(size);
byte[][] outputBuffers = new byte[segments.Length][];
int[] outputLengths = new int[segments.Length];
Parallel.For(0, segments.Length, i =>
{
if(segments[i] == IntPtr.Zero)
{
return;
}
Interlocked.Increment(ref realSegmentsCount);
var compressedBuffer = new byte[LZ4Codec.MaximumOutputLength(SegmentSize)];
var length = LZ4Codec.Encode64(segments[i], compressedBuffer, SegmentSize);
outputBuffers[i] = compressedBuffer;
outputLengths[i] = length;
});
for(var i = 0; i < segments.Length; i++)
{
if(segments[i] == IntPtr.Zero)
{
writer.Write(false);
continue;
}
writer.Write(true);
writer.Write(outputLengths[i]);
writer.Write(outputBuffers[i], 0, outputLengths[i]);
}
this.NoisyLog(string.Format("{0} segments saved to stream, of which {1} had contents.", segments.Length, realSegmentsCount));
globalStopwatch.Stop();
this.NoisyLog("Memory serialization ended in {0}s.", Misc.NormalizeDecimal(globalStopwatch.Elapsed.TotalSeconds));
}
public virtual void Save(PrimitiveWriter writer)
{
}
public ObjectWriter(Stream stream, Serializer.WriteMethods writeMethods, Action<object> preSerializationCallback = null,
Action<object> postSerializationCallback = null, SwapList surrogatesForObjects = null, SwapList objectsForSurrogates = null,
bool treatCollectionAsUserObject = false, bool useBuffering = true, bool disableStamping = false,
ReferencePreservation referencePreservation = ReferencePreservation.Preserve)
{
this.treatCollectionAsUserObject = treatCollectionAsUserObject;
this.objectsForSurrogates = objectsForSurrogates;
this.referencePreservation = referencePreservation;
this.preSerializationCallback = preSerializationCallback;
this.postSerializationCallback = postSerializationCallback;
this.writeMethods = writeMethods;
this.surrogatesForObjects = surrogatesForObjects ?? new SwapList();
parentObjects = new Dictionary<object, object>();
postSerializationHooks = new List<Action>();
types = new IdentifiedElementsDictionary<TypeDescriptor>(this);
Methods = new IdentifiedElementsDictionary<MethodDescriptor>(this);
Assemblies = new IdentifiedElementsDictionary<AssemblyDescriptor>(this);
Modules = new IdentifiedElementsDictionary<ModuleDescriptor>(this);
writer = new PrimitiveWriter(stream, useBuffering);
if(referencePreservation == ReferencePreservation.Preserve)
{
identifier = new ObjectIdentifier();
}
touchTypeMethod = disableStamping ? (Func<Type, int>)TouchAndWriteTypeIdWithSimpleStamp : TouchAndWriteTypeIdWithFullStamp;
objectsWrittenInline = new HashSet<int>();
}
private static void WriteObjectUsingReflection(ObjectWriter objectWriter, PrimitiveWriter primitiveWriter, object o)
{
objectWriter.TouchAndWriteTypeId(o.GetType());
// the primitiveWriter and parameter is not used here in fact, it is only to have
// signature compatible with the generated method
Helpers.InvokeAttribute(typeof(PreSerializationAttribute), o);
try
{
var type = o.GetType();
objectWriter.currentlyWrittenTypes.Push(type);
if(!objectWriter.WriteSpecialObject(o))
{
objectWriter.WriteObjectsFields(o, type);
}
objectWriter.currentlyWrittenTypes.Pop();
}
finally
{
Helpers.InvokeAttribute(typeof(PostSerializationAttribute), o);
var postHook = Helpers.GetDelegateWithAttribute(typeof(LatePostSerializationAttribute), o);
if(postHook != null)
{
objectWriter.postSerializationHooks.Add(postHook);
}
}
}
/// <summary>
/// Releases all resource used by the <see cref="Antmicro.Migrant.ObjectWriter"/> object. Note that this is not necessary
/// if buffering is not used.
/// </summary>
/// <remarks>Call <see cref="Dispose"/> when you are finished using the <see cref="Antmicro.Migrant.ObjectWriter"/>. The
/// <see cref="Dispose"/> method leaves the <see cref="Antmicro.Migrant.ObjectWriter"/> in an unusable state.
/// After calling <see cref="Dispose"/>, you must release all references to the
/// <see cref="Antmicro.Migrant.ObjectWriter"/> so the garbage collector can reclaim the memory that the
/// <see cref="Antmicro.Migrant.ObjectWriter"/> was occupying.</remarks>
public void Dispose()
{
writer.Dispose();
writer = null;
}
/// <summary>
/// Initializes a new instance of the <see cref="Antmicro.Migrant.ObjectWriter" /> class.
/// </summary>
/// <param name='stream'>
/// Stream to which data will be written.
/// </param>
/// <param name='preSerializationCallback'>
/// Callback which is called once on every unique object before its serialization. Contains this object in its only parameter.
/// </param>
/// <param name='postSerializationCallback'>
/// Callback which is called once on every unique object after its serialization. Contains this object in its only parameter.
/// </param>
/// <param name='writeMethodCache'>
/// Cache in which generated write methods are stored and reused between instances of <see cref="Antmicro.Migrant.ObjectWriter" />.
/// Can be null if one does not want to use the cache. Note for the life of the cache you always have to provide the same
/// <paramref name="surrogatesForObjects"/>.
/// </param>
/// <param name='surrogatesForObjects'>
/// Dictionary, containing callbacks that provide surrogate for given type. Callbacks have to be of type Func<T, object> where
/// typeof(T) is given type. Note that the list always have to be in sync with <paramref name="writeMethodCache"/>.
/// </param>
/// <param name='isGenerating'>
/// True if write methods are to be generated, false if one wants to use reflection.
/// </param>
/// <param name = "treatCollectionAsUserObject">
/// True if collection objects are to be serialized without optimization (treated as normal user objects).
/// </param>
/// <param name="useBuffering">
/// True if buffering is used. False if all writes should directly go to the stream and no padding should be used.
/// </param>
/// <param name="referencePreservation">
/// Tells serializer how to treat object identity between the calls to <see cref="Antmicro.Migrant.ObjectWriter.WriteObject" />.
/// </param>
public ObjectWriter(Stream stream, Action<object> preSerializationCallback = null,
Action<object> postSerializationCallback = null, IDictionary<Type, DynamicMethod> writeMethodCache = null,
InheritanceAwareList<Delegate> surrogatesForObjects = null, bool isGenerating = true, bool treatCollectionAsUserObject = false,
bool useBuffering = true, ReferencePreservation referencePreservation = ReferencePreservation.Preserve)
{
if(surrogatesForObjects == null)
{
surrogatesForObjects = new InheritanceAwareList<Delegate>();
}
currentlyWrittenTypes = new Stack<Type>();
transientTypeCache = new Dictionary<Type, bool>();
writeMethods = new Dictionary<Type, Action<PrimitiveWriter, object>>();
postSerializationHooks = new List<Action>();
this.writeMethodCache = writeMethodCache;
this.isGenerating = isGenerating;
this.treatCollectionAsUserObject = treatCollectionAsUserObject;
this.surrogatesForObjects = surrogatesForObjects;
typeIndices = new Dictionary<TypeDescriptor, int>();
methodIndices = new Dictionary<MethodInfo, int>();
assemblyIndices = new Dictionary<AssemblyDescriptor, int>();
this.preSerializationCallback = preSerializationCallback;
this.postSerializationCallback = postSerializationCallback;
writer = new PrimitiveWriter(stream, useBuffering);
inlineWritten = new HashSet<int>();
this.referencePreservation = referencePreservation;
if(referencePreservation == ReferencePreservation.Preserve)
{
identifier = new ObjectIdentifier();
}
}
public void WriteTo(PrimitiveWriter writer)
{
writer.Write(Name);
writer.Write(TypeAQN);
}
