EventNode.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "HAL/Platform.h"
#include "Trace/Config.h"
 
#if TRACE_PRIVATE_MINIMAL_ENABLED
 
#include "Field.h"
 
namespace UE {
namespace Trace {
namespace Private {
 
struct FEventInfo
{
    enum
    {
        Flag_None           = 0,
        Flag_Important      = 1 << 0,
        Flag_MaybeHasAux    = 1 << 1,
        Flag_NoSync         = 1 << 2,
        Flag_Definition8    = 1 << 3,
        Flag_Definition16   = 1 << 4,
        Flag_Definition32   = 1 << 5,
        Flag_Definition64   = 1 << 6,
 
        DefinitionBits      = Flag_Definition8 | Flag_Definition16 | Flag_Definition32 | Flag_Definition64,
    };
 
    FLiteralName            LoggerName;
    FLiteralName            EventName;
    const FFieldDesc*       Fields;
    uint16                  FieldCount;
    uint16                  Flags;
};
 
class FEventNode
{
public:
    struct FIter
    {
        const FEventNode*   GetNext();
        void*               Inner;
    };
 
    static FIter            Read();
    static FIter            ReadNew();
    static void             OnConnect();
    TRACELOG_API uint32     Initialize(const FEventInfo* InInfo);
    void                    Describe() const;
    uint32                  GetUid() const { return Uid; }
 
private:
    FEventNode*             Next;
    const FEventInfo*       Info;
    uint32                  Uid;
};
 
} // namespace Private
} // namespace Trace
} // namespace UE
 
#else
 
// Since we use this type in macros we need
// provide an empty definition when trace is
// not enabled.
namespace UE::Trace::Private { struct FEventInfo {}; }
 
#endif // TRACE_PRIVATE_MINIMAL_ENABLED