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https://github.com/wolfpld/tracy.git
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20f8c8b8a4
On Windows there is no way to distinguish callstack data coming from random sampling and from context switches. Each callstack timestamp has to be matched against the context switch data in order to decide its origin. This is obviously non-trivial. On some other platforms, the origin information may be available right away, in which case the process of matching against the context switch data, which possibly includes postponing callstacks for processing in the future, may be completely omitted.
140 lines
3.0 KiB
C++
140 lines
3.0 KiB
C++
#ifndef __TRACYPROTOCOL_HPP__
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#define __TRACYPROTOCOL_HPP__
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#include <limits>
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#include <stdint.h>
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namespace tracy
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{
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constexpr unsigned Lz4CompressBound( unsigned isize ) { return isize + ( isize / 255 ) + 16; }
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enum : uint32_t { ProtocolVersion = 54 };
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enum : uint16_t { BroadcastVersion = 2 };
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using lz4sz_t = uint32_t;
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enum { TargetFrameSize = 256 * 1024 };
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enum { LZ4Size = Lz4CompressBound( TargetFrameSize ) };
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static_assert( LZ4Size <= std::numeric_limits<lz4sz_t>::max(), "LZ4Size greater than lz4sz_t" );
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static_assert( TargetFrameSize * 2 >= 64 * 1024, "Not enough space for LZ4 stream buffer" );
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enum { HandshakeShibbolethSize = 8 };
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static const char HandshakeShibboleth[HandshakeShibbolethSize] = { 'T', 'r', 'a', 'c', 'y', 'P', 'r', 'f' };
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enum HandshakeStatus : uint8_t
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{
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HandshakePending,
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HandshakeWelcome,
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HandshakeProtocolMismatch,
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HandshakeNotAvailable,
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HandshakeDropped
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};
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enum { WelcomeMessageProgramNameSize = 64 };
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enum { WelcomeMessageHostInfoSize = 1024 };
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#pragma pack( 1 )
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// Must increase left query space after handling!
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enum ServerQuery : uint8_t
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{
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ServerQueryTerminate,
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ServerQueryString,
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ServerQueryThreadString,
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ServerQuerySourceLocation,
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ServerQueryPlotName,
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ServerQueryCallstackFrame,
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ServerQueryFrameName,
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ServerQueryDisconnect,
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ServerQueryExternalName,
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ServerQueryParameter,
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ServerQuerySymbol,
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ServerQuerySymbolCode,
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ServerQueryCodeLocation,
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ServerQuerySourceCode,
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ServerQueryDataTransfer,
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ServerQueryDataTransferPart,
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ServerQueryFiberName
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};
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struct ServerQueryPacket
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{
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ServerQuery type;
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uint64_t ptr;
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uint32_t extra;
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};
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enum { ServerQueryPacketSize = sizeof( ServerQueryPacket ) };
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enum CpuArchitecture : uint8_t
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{
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CpuArchUnknown,
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CpuArchX86,
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CpuArchX64,
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CpuArchArm32,
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CpuArchArm64
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};
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struct WelcomeFlag
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{
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enum _t : uint8_t
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{
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OnDemand = 1 << 0,
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IsApple = 1 << 1,
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CodeTransfer = 1 << 2,
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CombineSamples = 1 << 3,
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IdentifySamples = 1 << 4,
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};
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};
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struct WelcomeMessage
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{
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double timerMul;
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int64_t initBegin;
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int64_t initEnd;
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uint64_t delay;
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uint64_t resolution;
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uint64_t epoch;
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uint64_t exectime;
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uint64_t pid;
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int64_t samplingPeriod;
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uint8_t flags;
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uint8_t cpuArch;
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char cpuManufacturer[12];
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uint32_t cpuId;
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char programName[WelcomeMessageProgramNameSize];
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char hostInfo[WelcomeMessageHostInfoSize];
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};
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enum { WelcomeMessageSize = sizeof( WelcomeMessage ) };
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struct OnDemandPayloadMessage
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{
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uint64_t frames;
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uint64_t currentTime;
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};
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enum { OnDemandPayloadMessageSize = sizeof( OnDemandPayloadMessage ) };
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struct BroadcastMessage
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{
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uint16_t broadcastVersion;
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uint16_t listenPort;
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uint32_t protocolVersion;
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int32_t activeTime; // in seconds
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char programName[WelcomeMessageProgramNameSize];
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};
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enum { BroadcastMessageSize = sizeof( BroadcastMessage ) };
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#pragma pack()
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}
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#endif
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