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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#ifndef __FASTSERIALIZER_H__
#define __FASTSERIALIZER_H__
#ifdef FEATURE_PERFTRACING
#include "fastserializableobject.h"
#include "fstream.h"
class FastSerializer;
typedef unsigned int StreamLabel;
enum class FastSerializerTags : BYTE
{
Error, // To improve debugabilty, 0 is an illegal tag.
NullReference, // Tag for a null object forwardReference.
ObjectReference, // Followed by StreamLabel
ForwardReference, // Followed by an index (32-bit integer) into the Forward forwardReference array and a Type object
BeginObject, // Followed by Type object, object data, tagged EndObject
BeginPrivateObject, // Like beginObject, but not placed in interning table on deserialiation
EndObject, // Placed after an object to mark its end.
ForwardDefinition, // Followed by a forward forwardReference index and an object definition (BeginObject)
Byte,
Int16,
Int32,
Int64,
SkipRegion,
String,
Limit, // Just past the last valid tag, used for asserts.
};
class FastSerializer
{
public:
FastSerializer(SString &outputFilePath, FastSerializableObject &object);
~FastSerializer();
StreamLabel GetStreamLabel() const;
void WriteObject(FastSerializableObject *pObject);
void WriteBuffer(BYTE *pBuffer, unsigned int length);
void WriteTag(FastSerializerTags tag, BYTE *payload = NULL, unsigned int payloadLength = 0);
void WriteString(const char *strContents, unsigned int length);
unsigned int AllocateForwardReference();
void DefineForwardReference(unsigned int index, StreamLabel value);
void WriteForwardReference(unsigned int index);
private:
void WriteEntryObject();
void WriteSerializationType(FastSerializableObject *pObject);
void WriteFileHeader();
StreamLabel WriteForwardReferenceTable();
void WriteTrailer(StreamLabel forwardReferencesTableStart);
CFileStream *m_pFileStream;
bool m_writeErrorEncountered;
FastSerializableObject *m_pEntryObject;
size_t m_currentPos;
static const unsigned int MaxForwardReferences = 100;
StreamLabel m_forwardReferences[MaxForwardReferences];
unsigned int m_nextForwardReference;
};
#endif // FEATURE_PERFTRACING
#endif // __FASTSERIALIZER_H__
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