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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_SESSION_H__
#define __EVENTPIPE_SESSION_H__
#ifdef FEATURE_PERFTRACING
class EventPipeSessionProviderList;
class EventPipeSessionProvider;
enum class EventPipeSessionType
{
File, // EventToFile
Streaming, // EventToEventListener
IpcStream // EventToIpc
};
class EventPipeSession
{
private:
// The set of configurations for each provider in the session.
EventPipeSessionProviderList *m_pProviderList;
// The configured size of the circular buffer.
size_t m_circularBufferSizeInBytes;
// True if rundown is enabled.
Volatile<bool> m_rundownEnabled;
// The type of the session.
// This determines behavior within the system (e.g. policies around which events to drop, etc.)
EventPipeSessionType m_sessionType;
// Start date and time in UTC.
FILETIME m_sessionStartTime;
// Start timestamp.
LARGE_INTEGER m_sessionStartTimeStamp;
public:
// TODO: This needs to be exposed via EventPipe::CreateSession() and EventPipe::DeleteSession() to avoid memory ownership issues.
EventPipeSession(
EventPipeSessionType sessionType,
unsigned int circularBufferSizeInMB,
const EventPipeProviderConfiguration *pProviders,
uint32_t numProviders);
~EventPipeSession();
// Determine if the session is valid or not. Invalid sessions can be detected before they are enabled.
bool IsValid() const;
// Get the session type.
EventPipeSessionType GetSessionType() const
{
LIMITED_METHOD_CONTRACT;
return m_sessionType;
}
// Get the configured size of the circular buffer.
size_t GetCircularBufferSize() const
{
LIMITED_METHOD_CONTRACT;
return m_circularBufferSizeInBytes;
}
// Determine if rundown is enabled.
bool RundownEnabled() const
{
LIMITED_METHOD_CONTRACT;
return m_rundownEnabled;
}
// Set the rundown enabled flag.
void SetRundownEnabled(bool value)
{
LIMITED_METHOD_CONTRACT;
m_rundownEnabled = value;
}
// Get the session start time in UTC.
FILETIME GetStartTime() const
{
LIMITED_METHOD_CONTRACT;
return m_sessionStartTime;
}
// Get the session start timestamp.
LARGE_INTEGER GetStartTimeStamp() const
{
LIMITED_METHOD_CONTRACT;
return m_sessionStartTimeStamp;
}
// Add a new provider to the session.
void AddSessionProvider(EventPipeSessionProvider *pProvider);
// Get the session provider for the specified provider if present.
EventPipeSessionProvider* GetSessionProvider(EventPipeProvider *pProvider);
};
#endif // FEATURE_PERFTRACING
#endif // __EVENTPIPE_SESSION_H__
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