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Support the live capture case in the flame graph view.

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Zooming and panning in the flame graph view shouldn't cause visual
glitches when live data is being captured.
This commit is contained in:
rmarker
2026-05-28 21:37:01 +09:30
parent 37750e27ab
commit 2e87eecc67
1 changed files with 61 additions and 9 deletions
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70
profiler/src/profiler/TracyView_FlameGraph.cpp
View File

@@ -762,6 +762,13 @@ static void FixupTime( std::vector<FlameGraphItem>& data, uint64_t t = 0 )
}
}
static int64_t GetFlameGraphTime( const std::vector<FlameGraphItem>& data )
{
int64_t time = 0;
for( const auto& v : data ) time += v.time;
return time;
}
static int GetFlameGraphDepth( const std::vector<FlameGraphItem>& data, int64_t minVisNs )
{
int maxDepth = 1;
@@ -845,14 +852,24 @@ void View::DrawFlameGraph()
ImGui::SeparatorEx( ImGuiSeparatorFlags_Vertical );
ImGui::SameLine();
if( ImGui::Checkbox( ICON_FA_ARROW_UP_WIDE_SHORT " Sort by time", &m_flameSort ) ) m_flameGraphInvariant.Reset();
if( ImGui::Checkbox( ICON_FA_ARROW_UP_WIDE_SHORT " Sort by time", &m_flameSort ) )
{
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
if( m_flameMode == 0 )
{
if( m_worker.HasContextSwitches() )
{
ImGui::SameLine();
if( ImGui::Checkbox( "Running time", &m_flameRunningTime ) ) m_flameGraphInvariant.Reset();
if( ImGui::Checkbox( "Running time", &m_flameRunningTime ) )
{
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
}
else
{
@@ -866,10 +883,20 @@ void View::DrawFlameGraph()
ImGui::SameLine();
ImGui::Text( ICON_FA_SHIELD_HALVED "External" );
ImGui::SameLine();
if( ImGui::Checkbox( "Frames", &m_flameExternal ) ) m_flameGraphInvariant.Reset();
if( ImGui::Checkbox( "Frames", &m_flameExternal ) )
{
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
ImGui::SameLine();
if( m_flameExternal ) ImGui::BeginDisabled();
if( ImGui::Checkbox( "Tails", &m_flameExternalTail ) ) m_flameGraphInvariant.Reset();
if( ImGui::Checkbox( "Tails", &m_flameExternalTail ) )
{
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
if( m_flameExternal ) ImGui::EndDisabled();
}
@@ -886,6 +913,8 @@ void View::DrawFlameGraph()
}
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
if( m_flameRange.active )
{
@@ -923,6 +952,8 @@ void View::DrawFlameGraph()
FlameGraphThread( t->id ) = true;
}
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
ImGui::SameLine();
if( ImGui::SmallButton( "Unselect all" ) )
@@ -932,6 +963,8 @@ void View::DrawFlameGraph()
FlameGraphThread( t->id ) = false;
}
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
const auto& style = ImGui::GetStyle();
@@ -959,7 +992,12 @@ void View::DrawFlameGraph()
const auto threadColor = GetThreadColor( t->id, 0 );
SmallColorBox( threadColor );
ImGui::SameLine();
if( SmallCheckbox( m_worker.GetThreadName( t->id ), &FlameGraphThread( t->id ) ) ) m_flameGraphInvariant.Reset();
if( SmallCheckbox( m_worker.GetThreadName( t->id ), &FlameGraphThread( t->id ) ) )
{
m_flameGraphInvariant.Reset();
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
ImGui::PopID();
if( t->isFiber )
{
@@ -976,10 +1014,17 @@ void View::DrawFlameGraph()
ImGui::PopStyleVar();
bool flameDataRebuilt = false;
const auto oldZsz = GetFlameGraphTime( m_flameGraphData );
const auto flameRangeChanged = m_flameGraphInvariant.range != m_flameRange;
if( m_flameMode == 0 && ( m_flameGraphInvariant.count != m_worker.GetZoneCount() || m_flameGraphInvariant.lastTime != m_worker.GetLastTime() ) ||
m_flameMode == 1 && ( m_flameGraphInvariant.count != m_worker.GetCallstackSampleCount() ) ||
m_flameGraphInvariant.range != m_flameRange )
flameRangeChanged )
{
if( flameRangeChanged )
{
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = 0;
}
m_flameGraphInvariant.range = m_flameRange;
size_t sz = 0;
@@ -1053,8 +1098,7 @@ void View::DrawFlameGraph()
flameDataRebuilt = true;
}
int64_t zsz = 0;
for( auto& v : m_flameGraphData ) zsz += v.time;
const auto zsz = GetFlameGraphTime( m_flameGraphData );
if( m_flameGraphData.empty() || zsz <= 0 )
{
@@ -1067,11 +1111,19 @@ void View::DrawFlameGraph()
}
else
{
if( flameDataRebuilt || m_flameGraphViewEnd <= m_flameGraphViewStart || m_flameGraphViewStart < 0 || m_flameGraphViewEnd > zsz )
if( m_flameGraphViewEnd <= m_flameGraphViewStart || m_flameGraphViewStart < 0 )
{
m_flameGraphViewStart = 0;
m_flameGraphViewEnd = zsz;
}
else if( flameDataRebuilt && oldZsz > 0 && m_flameGraphViewStart == 0 && m_flameGraphViewEnd == oldZsz )
{
m_flameGraphViewEnd = zsz;
}
else
{
ClampFlameGraphViewport( m_flameGraphViewStart, m_flameGraphViewEnd, zsz, ImGui::GetContentRegionAvail().x );
}
const auto period = m_flameMode == 0 ? 1 : m_worker.GetSamplingPeriod();
DrawFlameGraphHeader( m_flameGraphViewStart, m_flameGraphViewEnd, period );