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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 __EVENTPIPE_FILE_H__
#define __EVENTPIPE_FILE_H__
#ifdef FEATURE_PERFTRACING
#include "eventpipe.h"
#include "eventpipeeventinstance.h"
#include "fastserializableobject.h"
#include "fastserializer.h"
class EventPipeFile : public FastSerializableObject
{
public:
EventPipeFile(SString &outputFilePath
#ifdef _DEBUG
,
bool lockOnWrite = false
#endif // _DEBUG
);
~EventPipeFile();
// Write an event to the file.
void WriteEvent(EventPipeEventInstance &instance);
// Serialize this object.
// Not supported - this is the entry object for the trace,
// which means that the contents hasn't yet been created.
void FastSerialize(FastSerializer *pSerializer)
{
LIMITED_METHOD_CONTRACT;
_ASSERTE(!"This function should never be called!");
}
// Get the type name of this object.
const char* GetTypeName()
{
LIMITED_METHOD_CONTRACT;
return "Microsoft.DotNet.Runtime.EventPipeFile";
}
private:
// Get the metadata address in the file for an event.
// The return value can be written into the file as a back-pointer to the event metadata.
StreamLabel GetMetadataLabel(EventPipeEvent &event);
// Save the metadata address in the file for an event.
void SaveMetadataLabel(EventPipeEvent &event, StreamLabel label);
// The object responsible for serialization.
FastSerializer *m_pSerializer;
// The system time when the file was opened.
SYSTEMTIME m_fileOpenSystemTime;
// The timestamp when the file was opened. Used for calculating file-relative timestamps.
LARGE_INTEGER m_fileOpenTimeStamp;
// The frequency of the timestamps used for this file.
LARGE_INTEGER m_timeStampFrequency;
// The forward reference index that marks the beginning of the event stream.
unsigned int m_beginEventsForwardReferenceIndex;
// The serialization which is responsible for making sure only a single event
// or block of events gets written to the file at once.
SpinLock m_serializationLock;
// Hashtable of metadata labels.
MapSHashWithRemove<EventPipeEvent*, StreamLabel> *m_pMetadataLabels;
#ifdef _DEBUG
bool m_lockOnWrite;
#endif // _DEBUG
};
#endif // FEATURE_PERFTRACING
#endif // __EVENTPIPE_FILE_H__
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