mirror of
https://github.com/wolfpld/tracy.git
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c774534b47
But rdtscp is serializing! No, it's not. Quoting the Intel Instruction Set Reference: "The RDTSCP instruction is not a serializing instruction, but it does wait until all previous instructions have executed and all previous loads are globally visible. But it does not wait for previous stores to be globally visible, and subsequent instructions may begin execution before the read operation is performed.", "The RDTSC instruction is not a serializing instruction. It does not necessarily wait until all previous instructions have been executed before reading the counter. Similarly, subsequent instructions may begin execution before the read operation is performed." So, the difference is in waiting for prior instructions to finish executing. Notice that even in the rdtscp case, execution of the following instructions may commence before time measurement is finished and data stores may be still pending. But, you may say, Intel in its "How to Benchmark Code Execution Times" document shows that using rdtscp is superior to rdstc. Well, not exactly. What they do show is that when a *single function* is considered, there are ways to measure its execution time with little to no error. This is not what Tracy is doing. In our case there is no way to determine absolute "this is before" and "this is after" points of a zone, as we probably already are inside another zone. Stopping the CPU execution, so that a deeply nested zone may be measured with great precision, will skew the measurements of all parent zones. And this is not what we want to measure, anyway. We are not interested in how a *single function* behaves, but how a *whole program* behaves. The out-of-order CPU behavior may influence the measurements? Good! We are interested in that. We want to see *how* the code is really executed. How is *stopping* the CPU to make a timer read an appropriate thing to do, when we want to see how a program is performing? At least that's the theory. And besides all that, the profiling overhead is now reduced.
579 lines
18 KiB
C++
579 lines
18 KiB
C++
#ifndef __TRACYPROFILER_HPP__
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#define __TRACYPROFILER_HPP__
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#include <assert.h>
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#include <atomic>
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#include <chrono>
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#include <stdint.h>
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#include <string.h>
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#include "tracy_concurrentqueue.h"
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#include "TracyCallstack.hpp"
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#include "TracySysTime.hpp"
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#include "TracySysTrace.hpp"
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#include "TracyFastVector.hpp"
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#include "../common/TracyQueue.hpp"
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#include "../common/TracyAlign.hpp"
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#include "../common/TracyAlloc.hpp"
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#include "../common/TracyMutex.hpp"
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#include "../common/TracySystem.hpp"
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#if defined _WIN32 || defined __CYGWIN__
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# include <intrin.h>
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#endif
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#ifdef __APPLE__
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# include <TargetConditionals.h>
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# include <mach/mach_time.h>
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#endif
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#if defined _WIN32 || defined __CYGWIN__ || ( ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 ) && !defined __ANDROID__ ) || __ARM_ARCH >= 6
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# define TRACY_HW_TIMER
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#endif
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#ifndef TracyConcat
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# define TracyConcat(x,y) TracyConcatIndirect(x,y)
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#endif
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#ifndef TracyConcatIndirect
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# define TracyConcatIndirect(x,y) x##y
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#endif
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namespace tracy
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{
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class GpuCtx;
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class Profiler;
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class Socket;
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class UdpBroadcast;
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struct GpuCtxWrapper
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{
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GpuCtx* ptr;
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};
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TRACY_API moodycamel::ConcurrentQueue<QueueItem>::ExplicitProducer* GetToken();
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TRACY_API Profiler& GetProfiler();
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TRACY_API std::atomic<uint32_t>& GetLockCounter();
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TRACY_API std::atomic<uint8_t>& GetGpuCtxCounter();
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TRACY_API GpuCtxWrapper& GetGpuCtx();
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TRACY_API uint64_t GetThreadHandle();
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TRACY_API void InitRPMallocThread();
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struct SourceLocationData
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{
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const char* name;
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const char* function;
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const char* file;
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uint32_t line;
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uint32_t color;
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};
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#ifdef TRACY_ON_DEMAND
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struct LuaZoneState
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{
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uint32_t counter;
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bool active;
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};
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#endif
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using Magic = moodycamel::ConcurrentQueueDefaultTraits::index_t;
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class Profiler
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{
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struct FrameImageQueueItem
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{
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void* image;
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uint64_t frame;
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uint16_t w;
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uint16_t h;
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uint8_t offset;
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bool flip;
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};
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public:
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Profiler();
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~Profiler();
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static tracy_force_inline int64_t GetTime()
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{
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#ifdef TRACY_HW_TIMER
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# if TARGET_OS_IOS == 1
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return mach_absolute_time();
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# elif __ARM_ARCH >= 6
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# ifdef CLOCK_MONOTONIC_RAW
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struct timespec ts;
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clock_gettime( CLOCK_MONOTONIC_RAW, &ts );
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return int64_t( ts.tv_sec ) * 1000000000ll + int64_t( ts.tv_nsec );
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# else
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return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();
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# endif
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# elif defined _WIN32 || defined __CYGWIN__
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return int64_t( __rdtsc() );
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# elif defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64
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uint32_t eax, edx;
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asm volatile ( "rdtsc" : "=a" (eax), "=d" (edx) );
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return ( uint64_t( edx ) << 32 ) + uint64_t( eax );
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# endif
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#else
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return std::chrono::duration_cast<std::chrono::nanoseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();
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#endif
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}
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tracy_force_inline uint32_t GetNextZoneId()
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{
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return m_zoneId.fetch_add( 1, std::memory_order_relaxed );
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}
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static tracy_force_inline QueueItem* QueueSerial()
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{
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auto& p = GetProfiler();
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p.m_serialLock.lock();
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return p.m_serialQueue.prepare_next();
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}
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static tracy_force_inline void QueueSerialFinish()
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{
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auto& p = GetProfiler();
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p.m_serialQueue.commit_next();
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p.m_serialLock.unlock();
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}
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static tracy_force_inline void SendFrameMark( const char* name )
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{
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if( !name ) GetProfiler().m_frameCount.fetch_add( 1, std::memory_order_relaxed );
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::FrameMarkMsg );
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MemWrite( &item->frameMark.time, GetTime() );
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MemWrite( &item->frameMark.name, uint64_t( name ) );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void SendFrameMark( const char* name, QueueType type )
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{
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assert( type == QueueType::FrameMarkMsgStart || type == QueueType::FrameMarkMsgEnd );
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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auto item = QueueSerial();
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MemWrite( &item->hdr.type, type );
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MemWrite( &item->frameMark.time, GetTime() );
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MemWrite( &item->frameMark.name, uint64_t( name ) );
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QueueSerialFinish();
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}
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static tracy_force_inline void SendFrameImage( const void* image, uint16_t w, uint16_t h, uint8_t offset, bool flip )
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{
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auto& profiler = GetProfiler();
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#ifdef TRACY_ON_DEMAND
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if( !profiler.IsConnected() ) return;
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#endif
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const auto sz = size_t( w ) * size_t( h ) * 4;
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auto ptr = (char*)tracy_malloc( sz );
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memcpy( ptr, image, sz );
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profiler.m_fiLock.lock();
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auto fi = profiler.m_fiQueue.prepare_next();
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fi->image = ptr;
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fi->frame = profiler.m_frameCount.load( std::memory_order_relaxed ) - offset;
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fi->w = w;
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fi->h = h;
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fi->flip = flip;
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profiler.m_fiQueue.commit_next();
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profiler.m_fiLock.unlock();
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}
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static tracy_force_inline void PlotData( const char* name, int64_t val )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::PlotData );
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MemWrite( &item->plotData.name, (uint64_t)name );
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MemWrite( &item->plotData.time, GetTime() );
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MemWrite( &item->plotData.type, PlotDataType::Int );
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MemWrite( &item->plotData.data.i, val );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void PlotData( const char* name, float val )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::PlotData );
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MemWrite( &item->plotData.name, (uint64_t)name );
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MemWrite( &item->plotData.time, GetTime() );
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MemWrite( &item->plotData.type, PlotDataType::Float );
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MemWrite( &item->plotData.data.f, val );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void PlotData( const char* name, double val )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::PlotData );
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MemWrite( &item->plotData.name, (uint64_t)name );
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MemWrite( &item->plotData.time, GetTime() );
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MemWrite( &item->plotData.type, PlotDataType::Double );
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MemWrite( &item->plotData.data.d, val );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void Message( const char* txt, size_t size )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto ptr = (char*)tracy_malloc( size+1 );
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memcpy( ptr, txt, size );
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ptr[size] = '\0';
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::Message );
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MemWrite( &item->message.time, GetTime() );
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MemWrite( &item->message.text, (uint64_t)ptr );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void Message( const char* txt )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::MessageLiteral );
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MemWrite( &item->message.time, GetTime() );
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MemWrite( &item->message.text, (uint64_t)txt );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void MessageColor( const char* txt, size_t size, uint32_t color )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto ptr = (char*)tracy_malloc( size+1 );
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memcpy( ptr, txt, size );
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ptr[size] = '\0';
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::MessageColor );
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MemWrite( &item->messageColor.time, GetTime() );
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MemWrite( &item->messageColor.text, (uint64_t)ptr );
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MemWrite( &item->messageColor.r, uint8_t( ( color ) & 0xFF ) );
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MemWrite( &item->messageColor.g, uint8_t( ( color >> 8 ) & 0xFF ) );
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MemWrite( &item->messageColor.b, uint8_t( ( color >> 16 ) & 0xFF ) );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void MessageColor( const char* txt, uint32_t color )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::MessageLiteralColor );
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MemWrite( &item->messageColor.time, GetTime() );
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MemWrite( &item->messageColor.text, (uint64_t)txt );
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MemWrite( &item->messageColor.r, uint8_t( ( color ) & 0xFF ) );
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MemWrite( &item->messageColor.g, uint8_t( ( color >> 8 ) & 0xFF ) );
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MemWrite( &item->messageColor.b, uint8_t( ( color >> 16 ) & 0xFF ) );
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void MessageAppInfo( const char* txt, size_t size )
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{
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Magic magic;
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auto token = GetToken();
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auto ptr = (char*)tracy_malloc( size+1 );
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memcpy( ptr, txt, size );
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ptr[size] = '\0';
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::MessageAppInfo );
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MemWrite( &item->message.time, GetTime() );
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MemWrite( &item->message.text, (uint64_t)ptr );
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#ifdef TRACY_ON_DEMAND
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GetProfiler().DeferItem( *item );
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#endif
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tail.store( magic + 1, std::memory_order_release );
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}
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static tracy_force_inline void MemAlloc( const void* ptr, size_t size )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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const auto thread = GetThreadHandle();
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GetProfiler().m_serialLock.lock();
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SendMemAlloc( QueueType::MemAlloc, thread, ptr, size );
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GetProfiler().m_serialLock.unlock();
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}
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static tracy_force_inline void MemFree( const void* ptr )
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{
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#ifdef TRACY_ON_DEMAND
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if( !GetProfiler().IsConnected() ) return;
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#endif
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const auto thread = GetThreadHandle();
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GetProfiler().m_serialLock.lock();
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SendMemFree( QueueType::MemFree, thread, ptr );
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GetProfiler().m_serialLock.unlock();
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}
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static tracy_force_inline void MemAllocCallstack( const void* ptr, size_t size, int depth )
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{
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#ifdef TRACY_HAS_CALLSTACK
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auto& profiler = GetProfiler();
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# ifdef TRACY_ON_DEMAND
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if( !profiler.IsConnected() ) return;
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# endif
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const auto thread = GetThreadHandle();
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rpmalloc_thread_initialize();
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auto callstack = Callstack( depth );
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profiler.m_serialLock.lock();
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SendMemAlloc( QueueType::MemAllocCallstack, thread, ptr, size );
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SendCallstackMemory( callstack );
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profiler.m_serialLock.unlock();
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#else
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MemAlloc( ptr, size );
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#endif
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}
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static tracy_force_inline void MemFreeCallstack( const void* ptr, int depth )
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{
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#ifdef TRACY_HAS_CALLSTACK
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auto& profiler = GetProfiler();
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# ifdef TRACY_ON_DEMAND
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if( !profiler.IsConnected() ) return;
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# endif
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const auto thread = GetThreadHandle();
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rpmalloc_thread_initialize();
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auto callstack = Callstack( depth );
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profiler.m_serialLock.lock();
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SendMemFree( QueueType::MemFreeCallstack, thread, ptr );
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SendCallstackMemory( callstack );
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profiler.m_serialLock.unlock();
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#else
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MemFree( ptr );
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#endif
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}
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static tracy_force_inline void SendCallstack( int depth )
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{
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#ifdef TRACY_HAS_CALLSTACK
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auto ptr = Callstack( depth );
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Magic magic;
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auto token = GetToken();
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auto& tail = token->get_tail_index();
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auto item = token->enqueue_begin( magic );
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MemWrite( &item->hdr.type, QueueType::Callstack );
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MemWrite( &item->callstack.ptr, ptr );
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tail.store( magic + 1, std::memory_order_release );
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#endif
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}
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void SendCallstack( int depth, const char* skipBefore );
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static void CutCallstack( void* callstack, const char* skipBefore );
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static bool ShouldExit();
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#ifdef TRACY_ON_DEMAND
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tracy_force_inline bool IsConnected() const
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{
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return m_isConnected.load( std::memory_order_acquire );
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}
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tracy_force_inline uint64_t ConnectionId() const
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{
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return m_connectionId.load( std::memory_order_acquire );
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}
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tracy_force_inline void DeferItem( const QueueItem& item )
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{
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m_deferredLock.lock();
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auto dst = m_deferredQueue.push_next();
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memcpy( dst, &item, sizeof( item ) );
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m_deferredLock.unlock();
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}
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#endif
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void RequestShutdown() { m_shutdown.store( true, std::memory_order_relaxed ); m_shutdownManual.store( true, std::memory_order_relaxed ); }
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bool HasShutdownFinished() const { return m_shutdownFinished.load( std::memory_order_relaxed ); }
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void SendString( uint64_t ptr, const char* str, QueueType type );
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private:
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enum class DequeueStatus { Success, ConnectionLost, QueueEmpty };
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static void LaunchWorker( void* ptr ) { ((Profiler*)ptr)->Worker(); }
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void Worker();
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static void LaunchCompressWorker( void* ptr ) { ((Profiler*)ptr)->CompressWorker(); }
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void CompressWorker();
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void ClearQueues( tracy::moodycamel::ConsumerToken& token );
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void ClearSerial();
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DequeueStatus Dequeue( tracy::moodycamel::ConsumerToken& token );
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DequeueStatus DequeueContextSwitches( tracy::moodycamel::ConsumerToken& token, int64_t& timeStop );
|
|
DequeueStatus DequeueSerial();
|
|
bool AppendData( const void* data, size_t len );
|
|
bool CommitData();
|
|
bool NeedDataSize( size_t len );
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|
|
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tracy_force_inline void AppendDataUnsafe( const void* data, size_t len )
|
|
{
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|
memcpy( m_buffer + m_bufferOffset, data, len );
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|
m_bufferOffset += int( len );
|
|
}
|
|
|
|
bool SendData( const char* data, size_t len );
|
|
void SendLongString( uint64_t ptr, const char* str, size_t len, QueueType type );
|
|
void SendSourceLocation( uint64_t ptr );
|
|
void SendSourceLocationPayload( uint64_t ptr );
|
|
void SendCallstackPayload( uint64_t ptr );
|
|
void SendCallstackAlloc( uint64_t ptr );
|
|
void SendCallstackFrame( uint64_t ptr );
|
|
|
|
bool HandleServerQuery();
|
|
void HandleDisconnect();
|
|
|
|
void CalibrateTimer();
|
|
void CalibrateDelay();
|
|
|
|
static tracy_force_inline void SendCallstackMemory( void* ptr )
|
|
{
|
|
#ifdef TRACY_HAS_CALLSTACK
|
|
auto item = GetProfiler().m_serialQueue.prepare_next();
|
|
MemWrite( &item->hdr.type, QueueType::CallstackMemory );
|
|
MemWrite( &item->callstackMemory.ptr, (uint64_t)ptr );
|
|
GetProfiler().m_serialQueue.commit_next();
|
|
#endif
|
|
}
|
|
|
|
static tracy_force_inline void SendMemAlloc( QueueType type, const uint64_t thread, const void* ptr, size_t size )
|
|
{
|
|
assert( type == QueueType::MemAlloc || type == QueueType::MemAllocCallstack );
|
|
|
|
auto item = GetProfiler().m_serialQueue.prepare_next();
|
|
MemWrite( &item->hdr.type, type );
|
|
MemWrite( &item->memAlloc.time, GetTime() );
|
|
MemWrite( &item->memAlloc.thread, thread );
|
|
MemWrite( &item->memAlloc.ptr, (uint64_t)ptr );
|
|
if( compile_time_condition<sizeof( size ) == 4>::value )
|
|
{
|
|
memcpy( &item->memAlloc.size, &size, 4 );
|
|
memset( &item->memAlloc.size + 4, 0, 2 );
|
|
}
|
|
else
|
|
{
|
|
assert( sizeof( size ) == 8 );
|
|
memcpy( &item->memAlloc.size, &size, 6 );
|
|
}
|
|
GetProfiler().m_serialQueue.commit_next();
|
|
}
|
|
|
|
static tracy_force_inline void SendMemFree( QueueType type, const uint64_t thread, const void* ptr )
|
|
{
|
|
assert( type == QueueType::MemFree || type == QueueType::MemFreeCallstack );
|
|
|
|
auto item = GetProfiler().m_serialQueue.prepare_next();
|
|
MemWrite( &item->hdr.type, type );
|
|
MemWrite( &item->memFree.time, GetTime() );
|
|
MemWrite( &item->memFree.thread, thread );
|
|
MemWrite( &item->memFree.ptr, (uint64_t)ptr );
|
|
GetProfiler().m_serialQueue.commit_next();
|
|
}
|
|
|
|
double m_timerMul;
|
|
uint64_t m_resolution;
|
|
uint64_t m_delay;
|
|
std::atomic<int64_t> m_timeBegin;
|
|
uint64_t m_mainThread;
|
|
uint64_t m_epoch;
|
|
std::atomic<bool> m_shutdown;
|
|
std::atomic<bool> m_shutdownManual;
|
|
std::atomic<bool> m_shutdownFinished;
|
|
Socket* m_sock;
|
|
UdpBroadcast* m_broadcast;
|
|
bool m_noExit;
|
|
std::atomic<uint32_t> m_zoneId;
|
|
|
|
uint64_t m_threadCtx;
|
|
|
|
void* m_stream; // LZ4_stream_t*
|
|
char* m_buffer;
|
|
int m_bufferOffset;
|
|
int m_bufferStart;
|
|
|
|
QueueItem* m_itemBuf;
|
|
char* m_lz4Buf;
|
|
|
|
FastVector<QueueItem> m_serialQueue, m_serialDequeue;
|
|
TracyMutex m_serialLock;
|
|
|
|
FastVector<FrameImageQueueItem> m_fiQueue, m_fiDequeue;
|
|
TracyMutex m_fiLock;
|
|
|
|
std::atomic<uint64_t> m_frameCount;
|
|
#ifdef TRACY_ON_DEMAND
|
|
std::atomic<bool> m_isConnected;
|
|
std::atomic<uint64_t> m_connectionId;
|
|
|
|
TracyMutex m_deferredLock;
|
|
FastVector<QueueItem> m_deferredQueue;
|
|
#endif
|
|
|
|
#ifdef TRACY_HAS_SYSTIME
|
|
void ProcessSysTime();
|
|
|
|
SysTime m_sysTime;
|
|
uint64_t m_sysTimeLast = 0;
|
|
#else
|
|
void ProcessSysTime() {}
|
|
#endif
|
|
};
|
|
|
|
};
|
|
|
|
#endif
|