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Separate call stack traversal from flame graph building.

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Bartosz Taudul 2024-12-16 16:41:00 +01:00
parent 9d839c52d1
commit 99d39e6eee
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 55 additions and 27 deletions
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82
profiler/src/profiler/TracyView_FlameGraph.cpp
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@ -210,52 +210,80 @@ void View::BuildFlameGraph( const Worker& worker, std::vector<FlameGraphItem>& d
void View::BuildFlameGraph( const Worker& worker, std::vector<FlameGraphItem>& data, const Vector<SampleData>& samples ) void View::BuildFlameGraph( const Worker& worker, std::vector<FlameGraphItem>& data, const Vector<SampleData>& samples )
{ {
struct FrameCache
{
uint64_t symaddr;
StringIdx name;
};
std::vector<FrameCache> cache;
for( auto& v : samples ) for( auto& v : samples )
{ {
cache.clear();
const auto cs = v.callstack.Val(); const auto cs = v.callstack.Val();
const auto& callstack = worker.GetCallstack( cs ); const auto& callstack = worker.GetCallstack( cs );
auto vec = &data;
const auto csz = callstack.size(); const auto csz = callstack.size();
for( size_t i=csz; i>0; i--) if( m_flameExternal )
{ {
auto frameData = worker.GetCallstackFrame( callstack[i-1] ); for( size_t i=csz; i>0; i-- )
if( frameData )
{ {
for( uint8_t j=frameData->size; j>0; j-- ) auto frameData = worker.GetCallstackFrame( callstack[i-1] );
if( frameData )
{ {
const auto frame = frameData->data[j-1]; for( uint8_t j=frameData->size; j>0; j-- )
const auto symaddr = frame.symAddr;
if( symaddr != 0 )
{ {
bool active = true; const auto frame = frameData->data[j-1];
if( !m_flameExternal ) const auto symaddr = frame.symAddr;
if( symaddr != 0 )
{
cache.emplace_back( FrameCache { symaddr, frame.name } );
}
}
}
}
}
else
{
for( size_t i=csz; i>0; i-- )
{
auto frameData = worker.GetCallstackFrame( callstack[i-1] );
if( frameData )
{
for( uint8_t j=frameData->size; j>0; j-- )
{
const auto frame = frameData->data[j-1];
const auto symaddr = frame.symAddr;
if( symaddr != 0 )
{ {
auto filename = m_worker.GetString( frame.file ); auto filename = m_worker.GetString( frame.file );
auto image = frameData->imageName.Active() ? m_worker.GetString( frameData->imageName ) : nullptr; auto image = frameData->imageName.Active() ? m_worker.GetString( frameData->imageName ) : nullptr;
if( IsFrameExternal( filename, image ) ) if( !IsFrameExternal( filename, image ) )
{ {
active = false; cache.emplace_back( FrameCache { symaddr, frame.name } );
}
}
if( active )
{
auto it = std::find_if( vec->begin(), vec->end(), [symaddr]( const auto& v ) { return v.srcloc == symaddr; } );
if( it == vec->end() )
{
vec->emplace_back( FlameGraphItem { (int64_t)symaddr, 1, frame.name } );
vec = &vec->back().children;
}
else
{
it->time++;
vec = &it->children;
} }
} }
} }
} }
} }
} }
auto vec = &data;
for( auto& v : cache )
{
auto it = std::find_if( vec->begin(), vec->end(), [symaddr = v.symaddr]( const auto& v ) { return v.srcloc == symaddr; } );
if( it == vec->end() )
{
vec->emplace_back( FlameGraphItem { (int64_t)v.symaddr, 1, v.name } );
vec = &vec->back().children;
}
else
{
it->time++;
vec = &it->children;
}
}
} }
} }