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Drawing the flame graph.

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Bartosz Taudul 2024-09-08 13:11:24 +02:00
parent e4ec798762
commit d8849af800
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GPG Key ID: B7FE2008B7575DF3
2 changed files with 80 additions and 0 deletions
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3
profiler/src/profiler/TracyView.hpp
View File

@ -51,6 +51,8 @@ struct CpuUsageDraw;
struct CpuCtxDraw;
struct LockDraw;
struct PlotDraw;
struct FlameGraphItem;
struct FlameGraphContext;
class View
@ -272,6 +274,7 @@ private:
void DrawSourceTooltip( const char* filename, uint32_t line, int before = 3, int after = 3, bool separateTooltip = true );
void DrawWaitStacks();
void DrawFlameGraph();
void DrawFlameGraphItem( const FlameGraphItem& item, FlameGraphContext& ctx, uint64_t ts, int depth );
void ListMemData( std::vector<const MemEvent*>& vec, const std::function<void(const MemEvent*)>& DrawAddress, int64_t startTime = -1, uint64_t pool = 0 );

77
profiler/src/profiler/TracyView_FlameGraph.cpp
View File

@ -1,4 +1,6 @@
#include "TracyColor.hpp"
#include "TracyEvent.hpp"
#include "TracyImGui.hpp"
#include "TracyVector.hpp"
#include "TracyView.hpp"
#include "tracy_robin_hood.h"
@ -87,6 +89,62 @@ static void SortFlameGraph( Vector<FlameGraphItem>& data )
for( auto& v : data ) SortFlameGraph( v.children );
}
struct FlameGraphContext
{
ImDrawList* draw;
ImVec2 wpos;
ImVec2 dpos;
float ty;
float ostep;
double pxns;
double nxps;
};
void View::DrawFlameGraphItem( const FlameGraphItem& item, FlameGraphContext& ctx, uint64_t ts, int depth )
{
const auto x0 = ctx.dpos.x + ts * ctx.pxns;
const auto x1 = x0 + item.time * ctx.pxns;
const auto y0 = ctx.dpos.y + depth * ctx.ostep;
const auto y1 = y0 + ctx.ty;
const auto& srcloc = m_worker.GetSourceLocation( item.srcloc );
const auto color = GetSrcLocColor( srcloc, depth );
const auto hiColor = HighlightColor( color );
const auto darkColor = DarkenColor( color );
const auto zsz = x1 - x0;
const char* name = m_worker.GetString( srcloc.name.active ? srcloc.name : srcloc.function );
auto tsz = ImGui::CalcTextSize( name );
if( m_vd.shortenName == ShortenName::Always || ( ( m_vd.shortenName == ShortenName::NoSpace || m_vd.shortenName == ShortenName::NoSpaceAndNormalize ) && tsz.x > zsz ) )
{
name = ShortenZoneName( m_vd.shortenName, name, tsz, zsz );
}
ctx.draw->AddRectFilled( ImVec2( x0, y0 ), ImVec2( x1, y1 ), color );
DrawLine( ctx.draw, ImVec2( x0, y1 ), ImVec2( x0, y0 ), ImVec2( x1-1, y0 ), hiColor );
DrawLine( ctx.draw, ImVec2( x0, y1 ), ImVec2( x1-1, y1), ImVec2( x1-1, y0 ), darkColor );
if( tsz.x < zsz )
{
const auto x = ( x1 + x0 - tsz.x ) * 0.5;
DrawTextContrast( ctx.draw, ImVec2( x, y0 ), 0xFFFFFFFF, name );
}
else
{
ImGui::PushClipRect( ImVec2( x0, y0 ), ImVec2( x1, y1 ), true );
DrawTextContrast( ctx.draw, ImVec2( x0, y0 ), 0xFFFFFFFF, name );
ImGui::PopClipRect();
}
uint64_t cts = ts;
for( auto& v : item.children )
{
DrawFlameGraphItem( v, ctx, cts, depth+1 );
cts += v.time;
}
}
void View::DrawFlameGraph()
{
const auto scale = GetScale();
@ -115,6 +173,25 @@ void View::DrawFlameGraph()
for( auto& v : data ) zsz += v.time;
ImGui::BeginChild( "##flameGraph" );
const auto region = ImGui::GetContentRegionAvail();
FlameGraphContext ctx;
ctx.draw = ImGui::GetWindowDrawList();
ctx.wpos = ImGui::GetCursorScreenPos();
ctx.dpos = ctx.wpos + ImVec2( 0.5f, 0.5f );
ctx.ty = ImGui::GetTextLineHeight();
ctx.ostep = ctx.ty + 1;
ctx.pxns = region.x / zsz;
ctx.nxps = 1.0 / ctx.pxns;
ImGui::ItemSize( region );
uint64_t ts = 0;
for( auto& v : data )
{
DrawFlameGraphItem( v, ctx, ts, 0 );
ts += v.time;
}
ImGui::EndChild();
ImGui::End();