81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
|
|
|
|
#pragma once
|
|
|
|
#include "CoreTypes.h"
|
|
|
|
namespace UE {
|
|
namespace Trace {
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
enum ETransport : uint8
|
|
{
|
|
_Unused = 0,
|
|
Raw = 1,
|
|
Packet = 2,
|
|
TidPacket = 3,
|
|
TidPacketSync = 4,
|
|
Active = TidPacketSync,
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
enum ETransportTid : uint32
|
|
{
|
|
Events = 0, // used to describe events
|
|
Internal = 1, // events to make the trace stream function
|
|
Importants = Internal, // important/cached events
|
|
Bias, // [Bias,End] = threads. Note bias can't be..
|
|
/* ... */ // ..changed as it breaks backwards compat :(
|
|
End = 0x3ffe, // two msbs are user for packet markers
|
|
Sync = 0x3fff, // see Writer_SendSync()
|
|
};
|
|
|
|
|
|
|
|
namespace Private
|
|
{
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
struct FTidPacketBase
|
|
{
|
|
enum : uint16
|
|
{
|
|
EncodedMarker = 0x8000,
|
|
PartialMarker = 0x4000, // now unused. fragmented aux-data has an event header
|
|
Verification = 0x4000, // when set the packet data is immediately followed by 64-bit verification value, see UE_TRACE_PACKET_VERIFICATION
|
|
ThreadIdMask = PartialMarker - 1,
|
|
};
|
|
|
|
uint16 PacketSize;
|
|
uint16 ThreadId;
|
|
};
|
|
|
|
template <uint32 DataSize>
|
|
struct TTidPacket
|
|
: public FTidPacketBase
|
|
{
|
|
uint8 Data[DataSize];
|
|
};
|
|
|
|
template <uint32 DataSize>
|
|
struct TTidPacketEncoded
|
|
: public FTidPacketBase
|
|
{
|
|
uint16 DecodedSize;
|
|
uint8 Data[DataSize];
|
|
};
|
|
|
|
using FTidPacket = TTidPacket<0>;
|
|
using FTidPacketEncoded = TTidPacketEncoded<0>;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Some assumptions are made about 0-sized arrays in the packet structs so we
|
|
// will casually make assertions about those assumptions here.
|
|
static_assert(sizeof(FTidPacket) == 4, "");
|
|
static_assert(sizeof(FTidPacketEncoded) == 6, "");
|
|
|
|
} // namespace Private
|
|
|
|
} // namespace Trace
|
|
} // namespace UE
|