tracy/server/TracyView_ContextSwitch.cpp
2023-04-27 23:17:35 +02:00

588 lines
23 KiB
C++

#include <algorithm>
#include "TracyImGui.hpp"
#include "TracyMouse.hpp"
#include "TracyPrint.hpp"
#include "TracyTimelineContext.hpp"
#include "TracyTimelineDraw.hpp"
#include "TracyView.hpp"
namespace tracy
{
const char* View::DecodeContextSwitchReasonCode( uint8_t reason )
{
switch( reason )
{
case 0: return "Executive";
case 1: return "FreePage";
case 2: return "PageIn";
case 3: return "PoolAllocation";
case 4: return "DelayExecution";
case 5: return "Suspended";
case 6: return "UserRequest";
case 7: return "WrExecutive";
case 8: return "WrFreePage";
case 9: return "WrPageIn";
case 10: return "WrPoolAllocation";
case 11: return "WrDelayExecution";
case 12: return "WrSuspended";
case 13: return "WrUserRequest";
case 14: return "WrEventPair";
case 15: return "WrQueue";
case 16: return "WrLpcReceive";
case 17: return "WrLpcReply";
case 18: return "WrVirtualMemory";
case 19: return "WrPageOut";
case 20: return "WrRendezvous";
case 21: return "WrKeyedEvent";
case 22: return "WrTerminated";
case 23: return "WrProcessInSwap";
case 24: return "WrCpuRateControl";
case 25: return "WrCalloutStack";
case 26: return "WrKernel";
case 27: return "WrResource";
case 28: return "WrPushLock";
case 29: return "WrMutex";
case 30: return "WrQuantumEnd";
case 31: return "WrDispatchInt";
case 32: return "WrPreempted";
case 33: return "WrYieldExecution";
case 34: return "WrFastMutex";
case 35: return "WrGuardedMutex";
case 36: return "WrRundown";
case 37: return "WrAlertByThreadId";
case 38: return "WrDeferredPreempt";
case 39: return "WrPhysicalFault";
case 40: return "MaximumWaitReason";
default: return "unknown";
}
}
const char* View::DecodeContextSwitchReason( uint8_t reason )
{
switch( reason )
{
case 0: return "(Thread is waiting for the scheduler)";
case 1: return "(Thread is waiting for a free virtual memory page)";
case 2: return "(Thread is waiting for a virtual memory page to arrive in memory)";
case 4: return "(Thread execution is delayed)";
case 5: return "(Thread execution is suspended)";
case 6: return "(Thread is waiting on object - WaitForSingleObject, etc.)";
case 7: return "(Thread is waiting for the scheduler)";
case 8: return "(Thread is waiting for a free virtual memory page)";
case 9: return "(Thread is waiting for a virtual memory page to arrive in memory)";
case 11: return "(Thread execution is delayed)";
case 12: return "(Thread execution is suspended)";
case 13: return "(Thread is waiting for window messages)";
case 15: return "(Thread is waiting on KQUEUE)";
case 24: return "(CPU rate limiting)";
case 34: return "(Waiting for a Fast Mutex)";
default: return "";
}
}
const char* View::DecodeContextSwitchStateCode( uint8_t state )
{
switch( state )
{
case 0: return "Initialized";
case 1: return "Ready";
case 2: return "Running";
case 3: return "Standby";
case 4: return "Terminated";
case 5: return "Waiting";
case 6: return "Transition";
case 7: return "DeferredReady";
case 101: return "D (disk sleep)";
case 102: return "I (idle)";
case 103: return "R (running)";
case 104: return "S (sleeping)";
case 105: return "T (stopped)";
case 106: return "t (tracing stop)";
case 107: return "W";
case 108: return "X (dead)";
case 109: return "Z (zombie)";
case 110: return "P (parked)";
default: return "unknown";
}
}
const char* View::DecodeContextSwitchState( uint8_t state )
{
switch( state )
{
case 0: return "(Thread has been initialized, but has not yet started)";
case 1: return "(Thread is waiting to use a processor because no processor is free. The thread is prepared to run on the next available processor)";
case 2: return "(Thread is currently using a processor)";
case 3: return "(Thread is about to use a processor)";
case 4: return "(Thread has finished executing and has exited)";
case 5: return "(Thread is not ready to use the processor because it is waiting for a peripheral operation to complete or a resource to become free)";
case 6: return "(Thread is waiting for a resource, other than the processor, before it can execute)";
case 7: return "(Thread has been selected to run on a specific processor but have not yet beed scheduled)";
case 101: return "(Uninterruptible sleep, usually IO)";
case 102: return "(Idle kernel thread)";
case 103: return "(Running or on run queue)";
case 104: return "(Interruptible sleep, waiting for an event to complete)";
case 105: return "(Stopped by job control signal)";
case 106: return "(Stopped by debugger during the tracing)";
case 107: return "(Paging)";
case 108: return "(Dead task is scheduling one last time)";
case 109: return "(Zombie process)";
case 110: return "(Parked)";
default: return "";
}
}
void View::DrawContextSwitchList( const TimelineContext& ctx, const std::vector<ContextSwitchDraw>& drawList, const Vector<ContextSwitchData>& ctxSwitch, int offset, int endOffset, bool isFiber )
{
constexpr float MinCtxSize = 4;
const auto vStart = ctx.vStart;
const auto& wpos = ctx.wpos;
const auto pxns = ctx.pxns;
const auto hover = ctx.hover;
const auto w = ctx.w;
const auto ty = ctx.ty;
const auto lineSize = 2 * GetScale();
auto draw = ImGui::GetWindowDrawList();
const auto dpos = wpos + ImVec2( 0.5f, 0.5f );
const auto ty05 = round( ty * 0.5f );
double minpx = -10;
for( auto& v : drawList )
{
const auto it = ctxSwitch.begin() + v.idx;
const auto& ev = *it;
switch( v.type )
{
case ContextSwitchDrawType::Waiting:
{
const auto& prev = *(it-1);
const bool migration = prev.Cpu() != ev.Cpu();
const auto px0 = std::max( { ( prev.End() - vStart ) * pxns, -10.0, double( minpx ) } );
const auto pxw = ( ev.WakeupVal() - vStart ) * pxns;
const auto px1 = std::min( ( ev.Start() - vStart ) * pxns, w + 10.0 );
const auto color = migration ? 0xFFEE7711 : 0xFF2222AA;
if( m_vd.darkenContextSwitches )
{
draw->AddRectFilled( dpos + ImVec2( px0, offset + ty05 ), dpos + ImVec2( px1, endOffset ), 0x661C2321 );
}
DrawLine( draw, dpos + ImVec2( px0, offset + ty05 - 0.5f ), dpos + ImVec2( std::min( pxw, w+10.0 ), offset + ty05 - 0.5f ), color, lineSize );
if( ev.WakeupVal() != ev.Start() )
{
DrawLine( draw, dpos + ImVec2( std::max( pxw, 10.0 ), offset + ty05 - 0.5f ), dpos + ImVec2( px1, offset + ty05 - 0.5f ), 0xFF2280A0, lineSize );
}
if( hover )
{
bool tooltip = false;
if( ImGui::IsMouseHoveringRect( wpos + ImVec2( px0, offset ), wpos + ImVec2( pxw, offset + ty ) ) )
{
ImGui::BeginTooltip();
if( isFiber )
{
TextFocused( "Fiber is", "yielding" );
TextFocused( "Yield time:", TimeToString( ev.Start() - prev.End() ) );
}
else
{
TextFocused( "Thread is", migration ? "migrating CPUs" : "waiting" );
TextFocused( "Waiting time:", TimeToString( ev.WakeupVal() - prev.End() ) );
if( migration )
{
TextFocused( "CPU:", RealToString( prev.Cpu() ) );
ImGui::SameLine();
TextFocused( ICON_FA_RIGHT_LONG, RealToString( ev.Cpu() ) );
}
else
{
TextFocused( "CPU:", RealToString( ev.Cpu() ) );
}
if( prev.Reason() != 100 )
{
TextFocused( "Wait reason:", DecodeContextSwitchReasonCode( prev.Reason() ) );
ImGui::SameLine();
ImGui::PushFont( m_smallFont );
ImGui::AlignTextToFramePadding();
TextDisabledUnformatted( DecodeContextSwitchReason( prev.Reason() ) );
ImGui::PopFont();
}
TextFocused( "Wait state:", DecodeContextSwitchStateCode( prev.State() ) );
ImGui::SameLine();
ImGui::PushFont( m_smallFont );
ImGui::AlignTextToFramePadding();
TextDisabledUnformatted( DecodeContextSwitchState( prev.State() ) );
ImGui::PopFont();
}
tooltip = true;
if( IsMouseClicked( 2 ) )
{
ZoomToRange( prev.End(), ev.WakeupVal() );
}
}
else if( ev.WakeupVal() != ev.Start() && ImGui::IsMouseHoveringRect( wpos + ImVec2( pxw, offset ), wpos + ImVec2( px1, offset + ty ) ) )
{
assert( !isFiber );
ImGui::BeginTooltip();
TextFocused( "Thread is", "waking up" );
TextFocused( "Scheduling delay:", TimeToString( ev.Start() - ev.WakeupVal() ) );
TextFocused( "CPU:", RealToString( ev.Cpu() ) );
if( IsMouseClicked( 2 ) )
{
ZoomToRange( prev.End(), ev.WakeupVal() );
}
tooltip = true;
}
if( tooltip )
{
const auto waitStack = v.data;
if( waitStack )
{
ImGui::Separator();
TextDisabledUnformatted( ICON_FA_HOURGLASS_HALF " Wait stack:" );
CallstackTooltipContents( waitStack );
if( ImGui::IsMouseClicked( 0 ) )
{
m_callstackInfoWindow = waitStack;
}
}
ImGui::EndTooltip();
}
}
break;
}
case ContextSwitchDrawType::Folded:
{
const auto num = v.data;
const auto px0 = std::max( ( ev.Start() - vStart ) * pxns, -10.0 );
const auto eit = it + num - 1;
const auto end = eit->IsEndValid() ? eit->End() : eit->Start();
const auto px1ns = end - vStart;
minpx = std::min( std::max( px1ns * pxns, px0+MinCtxSize ), double( w + 10 ) );
if( num == 1 )
{
DrawLine( draw, dpos + ImVec2( px0, offset + ty05 - 0.5f ), dpos + ImVec2( minpx, offset + ty05 - 0.5f ), 0xFF22DD22, lineSize );
if( hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( px0, offset ), wpos + ImVec2( minpx, offset + ty + 1 ) ) )
{
ImGui::BeginTooltip();
if( isFiber )
{
const auto tid = m_worker.DecompressThread( ev.Thread() );
TextFocused( "Fiber is", "running" );
TextFocused( "Activity time:", TimeToString( end - ev.Start() ) );
TextFocused( "Thread:", m_worker.GetThreadName( tid ) );
ImGui::SameLine();
ImGui::TextDisabled( "(%s)", RealToString( tid ) );
}
else
{
TextFocused( "Thread is", "running" );
TextFocused( "Activity time:", TimeToString( end - ev.Start() ) );
TextFocused( "CPU:", RealToString( ev.Cpu() ) );
}
ImGui::EndTooltip();
if( IsMouseClicked( 2 ) )
{
ZoomToRange( ev.Start(), end );
}
}
}
else
{
DrawZigZag( draw, wpos + ImVec2( 0, offset + ty05 ), px0, minpx, ty/4, 0xFF888888 );
if( hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( px0, offset ), wpos + ImVec2( minpx, offset + ty + 1 ) ) )
{
ImGui::BeginTooltip();
TextFocused( isFiber ? "Fiber is" : "Thread is", "changing activity multiple times" );
TextFocused( "Number of running regions:", RealToString( num ) );
TextFocused( "Time:", TimeToString( end - ev.Start() ) );
ImGui::EndTooltip();
if( IsMouseClicked( 2 ) )
{
ZoomToRange( ev.Start(), end );
}
}
}
break;
}
case ContextSwitchDrawType::Running:
{
const auto end = ev.IsEndValid() ? ev.End() : ev.Start();
const auto px0 = std::max( { ( ev.Start() - vStart ) * pxns, -10.0, double( minpx ) } );
const auto px1 = std::min( ( end - vStart ) * pxns, w + 10.0 );
DrawLine( draw, dpos + ImVec2( px0, offset + ty05 - 0.5f ), dpos + ImVec2( px1, offset + ty05 - 0.5f ), 0xFF22DD22, lineSize );
if( hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( px0, offset ), wpos + ImVec2( px1, offset + ty + 1 ) ) )
{
ImGui::BeginTooltip();
if( isFiber )
{
const auto tid = m_worker.DecompressThread( ev.Thread() );
TextFocused( "Fiber is", "running" );
TextFocused( "Activity time:", TimeToString( end - ev.Start() ) );
TextFocused( "Thread:", m_worker.GetThreadName( tid ) );
ImGui::SameLine();
ImGui::TextDisabled( "(%s)", RealToString( tid ) );
}
else
{
TextFocused( "Thread is", "running" );
TextFocused( "Activity time:", TimeToString( end - ev.Start() ) );
TextFocused( "CPU:", RealToString( ev.Cpu() ) );
}
ImGui::EndTooltip();
if( IsMouseClicked( 2 ) )
{
ZoomToRange( ev.Start(), end );
}
}
break;
}
default:
assert( false );
break;
};
}
}
void View::DrawWaitStacks()
{
const auto scale = GetScale();
ImGui::SetNextWindowSize( ImVec2( 1400 * scale, 500 * scale ), ImGuiCond_FirstUseEver );
ImGui::Begin( "Wait stacks", &m_showWaitStacks );
if( ImGui::GetCurrentWindowRead()->SkipItems ) { ImGui::End(); return; }
#ifdef TRACY_NO_STATISTICS
ImGui::TextWrapped( "Rebuild without the TRACY_NO_STATISTICS macro to enable wait stacks." );
#else
uint64_t totalCount = 0;
unordered_flat_map<uint32_t, uint64_t> stacks;
for( auto& t : m_threadOrder )
{
if( WaitStackThread( t->id ) )
{
auto it = t->ctxSwitchSamples.begin();
auto end = t->ctxSwitchSamples.end();
if( m_waitStackRange.active )
{
it = std::lower_bound( it, end, m_waitStackRange.min, [] ( const auto& lhs, const auto& rhs ) { return lhs.time.Val() < rhs; } );
end = std::lower_bound( it, end, m_waitStackRange.max, [] ( const auto& lhs, const auto& rhs ) { return lhs.time.Val() < rhs; } );
}
totalCount += std::distance( it, end );
while( it != end )
{
auto cs = it->callstack.Val();
auto cit = stacks.find( cs );
if( cit == stacks.end() )
{
stacks.emplace( cs, 1 );
}
else
{
cit->second++;
}
++it;
}
}
}
ImGui::PushStyleVar( ImGuiStyleVar_FramePadding, ImVec2( 2, 2 ) );
if( ImGui::RadioButton( ICON_FA_TABLE " List", m_waitStackMode == 0 ) ) m_waitStackMode = 0;
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
if( ImGui::RadioButton( ICON_FA_TREE " Bottom-up tree", m_waitStackMode == 1 ) ) m_waitStackMode = 1;
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
if( ImGui::RadioButton( ICON_FA_TREE " Top-down tree", m_waitStackMode == 2 ) ) m_waitStackMode = 2;
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
ImGui::SeparatorEx( ImGuiSeparatorFlags_Vertical );
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
TextFocused( "Total wait stacks:", RealToString( m_worker.GetContextSwitchSampleCount() ) );
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
TextFocused( "Selected:", RealToString( totalCount ) );
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
ImGui::SeparatorEx( ImGuiSeparatorFlags_Vertical );
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
if( ImGui::Checkbox( "Limit range", &m_waitStackRange.active ) )
{
if( m_waitStackRange.active && m_waitStackRange.min == 0 && m_waitStackRange.max == 0 )
{
m_waitStackRange.min = m_vd.zvStart;
m_waitStackRange.max = m_vd.zvEnd;
}
}
if( m_waitStackRange.active )
{
ImGui::SameLine();
TextColoredUnformatted( 0xFF00FFFF, ICON_FA_TRIANGLE_EXCLAMATION );
ImGui::SameLine();
ToggleButton( ICON_FA_RULER " Limits", m_showRanges );
}
ImGui::PopStyleVar();
bool threadsChanged = false;
auto expand = ImGui::TreeNode( ICON_FA_SHUFFLE " Visible threads:" );
ImGui::SameLine();
ImGui::TextDisabled( "(%zu)", m_threadOrder.size() );
if( expand )
{
auto& crash = m_worker.GetCrashEvent();
ImGui::SameLine();
if( ImGui::SmallButton( "Select all" ) )
{
for( const auto& t : m_threadOrder )
{
WaitStackThread( t->id ) = true;
}
threadsChanged = true;
}
ImGui::SameLine();
if( ImGui::SmallButton( "Unselect all" ) )
{
for( const auto& t : m_threadOrder )
{
WaitStackThread( t->id ) = false;
}
threadsChanged = true;
}
int idx = 0;
for( const auto& t : m_threadOrder )
{
if( t->ctxSwitchSamples.empty() ) continue;
ImGui::PushID( idx++ );
const auto threadColor = GetThreadColor( t->id, 0 );
SmallColorBox( threadColor );
ImGui::SameLine();
if( SmallCheckbox( m_worker.GetThreadName( t->id ), &WaitStackThread( t->id ) ) )
{
threadsChanged = true;
}
ImGui::PopID();
ImGui::SameLine();
ImGui::TextDisabled( "(%s)", RealToString( t->ctxSwitchSamples.size() ) );
if( crash.thread == t->id )
{
ImGui::SameLine();
TextColoredUnformatted( ImVec4( 1.f, 0.2f, 0.2f, 1.f ), ICON_FA_SKULL " Crashed" );
}
if( t->isFiber )
{
ImGui::SameLine();
TextColoredUnformatted( ImVec4( 0.2f, 0.6f, 0.2f, 1.f ), "Fiber" );
}
}
ImGui::TreePop();
}
if( threadsChanged ) m_waitStack = 0;
ImGui::Separator();
ImGui::BeginChild( "##waitstacks" );
if( stacks.empty() )
{
ImGui::TextUnformatted( "No wait stacks to display." );
}
else
{
switch( m_waitStackMode )
{
case 0:
{
TextDisabledUnformatted( "Wait stack:" );
ImGui::SameLine();
if( ImGui::SmallButton( " " ICON_FA_CARET_LEFT " " ) )
{
m_waitStack = std::max( m_waitStack - 1, 0 );
}
ImGui::SameLine();
ImGui::Text( "%s / %s", RealToString( m_waitStack + 1 ), RealToString( stacks.size() ) );
if( ImGui::IsItemClicked() ) ImGui::OpenPopup( "WaitStacksPopup" );
ImGui::SameLine();
if( ImGui::SmallButton( " " ICON_FA_CARET_RIGHT " " ) )
{
m_waitStack = std::min<int>( m_waitStack + 1, stacks.size() - 1 );
}
if( ImGui::BeginPopup( "WaitStacksPopup" ) )
{
int sel = m_waitStack + 1;
ImGui::SetNextItemWidth( 120 * scale );
const bool clicked = ImGui::InputInt( "##waitStack", &sel, 1, 100, ImGuiInputTextFlags_EnterReturnsTrue );
if( clicked ) m_waitStack = std::min( std::max( sel, 1 ), int( stacks.size() ) ) - 1;
ImGui::EndPopup();
}
ImGui::SameLine();
ImGui::Spacing();
ImGui::SameLine();
Vector<decltype(stacks.begin())> data;
data.reserve( stacks.size() );
for( auto it = stacks.begin(); it != stacks.end(); ++it ) data.push_back( it );
pdqsort_branchless( data.begin(), data.end(), []( const auto& l, const auto& r ) { return l->second > r->second; } );
TextFocused( "Counts:", RealToString( data[m_waitStack]->second ) );
ImGui::SameLine();
char buf[64];
PrintStringPercent( buf, 100. * data[m_waitStack]->second / totalCount );
TextDisabledUnformatted( buf );
ImGui::Separator();
DrawCallstackTable( data[m_waitStack]->first, false );
break;
}
case 1:
{
SmallCheckbox( "Group by function name", &m_groupWaitStackBottomUp );
auto tree = GetCallstackFrameTreeBottomUp( stacks, m_groupCallstackTreeByNameBottomUp );
if( !tree.empty() )
{
int idx = 0;
DrawFrameTreeLevel( tree, idx );
}
else
{
TextDisabledUnformatted( "No call stacks to show" );
}
break;
}
case 2:
{
SmallCheckbox( "Group by function name", &m_groupWaitStackTopDown );
auto tree = GetCallstackFrameTreeTopDown( stacks, m_groupCallstackTreeByNameTopDown );
if( !tree.empty() )
{
int idx = 0;
DrawFrameTreeLevel( tree, idx );
}
else
{
TextDisabledUnformatted( "No call stacks to show" );
}
break;
}
default:
assert( false );
break;
}
}
#endif
ImGui::EndChild();
ImGui::End();
}
}