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Simplify context switch precalculation.

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Bartosz Taudul
2023-03-25 00:18:53 +01:00
parent 734753a941
commit efa095e25f
5 changed files with 68 additions and 98 deletions
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44
server/TracyTimelineItemThread.cpp
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@@ -469,7 +469,7 @@ void TimelineItemThread::PreprocessContextSwitches( const TimelineContext& ctx,
if( it == citend ) return;
if( citend != vec.end() ) ++citend;
const auto MinCtxNs = MinCtxSize * nspx;
const auto MinCtxNs = int64_t( round( GetScale() * MinCtxSize * nspx ) );
const auto& sampleData = m_thread->samples;
auto pit = citend;
@@ -492,50 +492,32 @@ void TimelineItemThread::PreprocessContextSwitches( const TimelineContext& ctx,
}
if( found ) waitStack = sdit->callstack.Val();
}
auto& ref = m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::Waiting, &ev } );
ref.waiting.prev = pit;
ref.waiting.waitStack = waitStack;
m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::Waiting, uint32_t( it - vec.begin() ), waitStack } );
}
const auto end = ev.IsEndValid() ? ev.End() : m_worker.GetLastTime();
const auto zsz = end - ev.Start();
if( zsz < MinCtxNs )
{
int num = 0;
auto px1ns = end - vStart;
auto rend = end;
auto nextTime = end + MinCtxNs;
auto next = it + 1;
for(;;)
{
const auto prevIt = it;
it = std::lower_bound( it, citend, nextTime, [] ( const auto& l, const auto& r ) { return (uint64_t)l.End() < (uint64_t)r; } );
if( it == prevIt ) ++it;
num += std::distance( prevIt, it );
if( it == citend ) break;
const auto nend = it->IsEndValid() ? it->End() : m_worker.GetLastTime();
const auto nsnext = nend - vStart;
if( nsnext - px1ns >= MinCtxNs * 2 ) break;
px1ns = nsnext;
rend = nend;
nextTime = nend + nspx;
}
if( num == 1 )
{
auto& ref = m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::FoldedOne, &ev } );
ref.folded.rend = rend;
}
else
{
auto& ref = m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::FoldedMulti, &ev } );
ref.folded.rend = rend;
ref.folded.num = num;
next = std::lower_bound( next, citend, nextTime, [] ( const auto& l, const auto& r ) { return (uint64_t)l.End() < (uint64_t)r; } );
if( next == citend ) break;
auto prev = next - 1;
const auto pt = prev->IsEndValid() ? prev->End() : m_worker.GetLastTime();
const auto nt = next->IsEndValid() ? next->End() : m_worker.GetLastTime();
if( nt - pt >= MinCtxNs ) break;
nextTime = nt + MinCtxNs;
}
m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::Folded, uint32_t( it - vec.begin() ), uint32_t( next - it ) } );
it = next;
pit = it-1;
}
else
{
m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::Running, &ev } );
m_ctxDraw.emplace_back( ContextSwitchDraw { ContextSwitchDrawType::Running, uint32_t( it - vec.begin() ) } );
pit = it;
++it;
}