Protocol1.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
// HEADER_UNIT_SKIP - Not included directly
 
namespace UE {
namespace Trace {
 
#if defined(TRACE_PRIVATE_PROTOCOL_1)
inline
#endif
namespace Protocol1
{
 
enum EProtocol : uint8 { Id = 1 };
 
using Protocol0::EFieldType;
using Protocol0::FNewEventEvent;
 
enum class EEventFlags : uint8
{
    Important       = 1 << 0,
    MaybeHasAux     = 1 << 1,
    NoSync          = 1 << 2,
};
 
enum class EKnownEventUids : uint16
{
    NewEvent,
    User,
    Max         = (1 << 15) - 1,
    UidMask     = Max,
    Invalid     = Max,
};
 
struct FEventHeader
{
    uint16      Uid;
    uint16      Size;
    uint16      Serial;
    uint8       EventData[];
};
 
struct FAuxHeader
{
    enum : uint32
    {
        AuxDataBit  = 0x80,
        FieldMask   = 0x7f,
        SizeLimit   = 1 << 24,
    };
 
    union
    {
        uint8   FieldIndex; // 7 bits max (MSB is used to indicate aux data)
        uint32  Size;       // encoded as (Size & 0x00ffffff) << 8
    };
    uint8       Data[];
};
 
} // namespace Protocol1
} // namespace Trace
} // namespace UE