tracy/server/TracyView_Locks.cpp

#include <inttypes.h>

#include "TracyColor.hpp"
#include "TracyFilesystem.hpp"
#include "TracyImGui.hpp"
#include "TracyMouse.hpp"
#include "TracyPrint.hpp"
#include "TracyView.hpp"

namespace tracy
{

constexpr float MinVisSize = 3;

static tracy_force_inline uint64_t GetThreadBit( uint8_t thread )
{
    return uint64_t( 1 ) << thread;
}

static tracy_force_inline bool IsThreadWaiting( uint64_t bitlist, uint64_t threadBit )
{
    return ( bitlist & threadBit ) != 0;
}

static tracy_force_inline bool AreOtherWaiting( uint64_t bitlist, uint64_t threadBit )
{
    return ( bitlist & ~threadBit ) != 0;
}

enum class LockState
{
    Nothing,
    HasLock,            // green
    HasBlockingLock,    // yellow
    WaitLock            // red
};

static Vector<LockEventPtr>::const_iterator GetNextLockEvent( const Vector<LockEventPtr>::const_iterator& it, const Vector<LockEventPtr>::const_iterator& end, LockState& nextState, uint64_t threadBit )
{
    auto next = it;
    next++;

    switch( nextState )
    {
    case LockState::Nothing:
        while( next < end )
        {
            if( next->lockCount != 0 )
            {
                if( GetThreadBit( next->lockingThread ) == threadBit )
                {
                    nextState = AreOtherWaiting( next->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
                    break;
                }
                else if( IsThreadWaiting( next->waitList, threadBit ) )
                {
                    nextState = LockState::WaitLock;
                    break;
                }
            }
            next++;
        }
        break;
    case LockState::HasLock:
        while( next < end )
        {
            if( next->lockCount == 0 )
            {
                nextState = LockState::Nothing;
                break;
            }
            if( next->waitList != 0 )
            {
                if( AreOtherWaiting( next->waitList, threadBit ) )
                {
                    nextState = LockState::HasBlockingLock;
                }
                break;
            }
            if( next->waitList != it->waitList || next->lockCount != it->lockCount )
            {
                break;
            }
            next++;
        }
        break;
    case LockState::HasBlockingLock:
        while( next < end )
        {
            if( next->lockCount == 0 )
            {
                nextState = LockState::Nothing;
                break;
            }
            if( next->waitList != it->waitList || next->lockCount != it->lockCount )
            {
                break;
            }
            next++;
        }
        break;
    case LockState::WaitLock:
        while( next < end )
        {
            if( GetThreadBit( next->lockingThread ) == threadBit )
            {
                nextState = AreOtherWaiting( next->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
                break;
            }
            if( next->lockingThread != it->lockingThread )
            {
                break;
            }
            if( next->lockCount == 0 )
            {
                break;
            }
            next++;
        }
        break;
    default:
        assert( false );
        break;
    }

    return next;
}

static Vector<LockEventPtr>::const_iterator GetNextLockEventShared( const Vector<LockEventPtr>::const_iterator& it, const Vector<LockEventPtr>::const_iterator& end, LockState& nextState, uint64_t threadBit )
{
    const auto itptr = (const LockEventShared*)(const LockEvent*)it->ptr;
    auto next = it;
    next++;

    switch( nextState )
    {
    case LockState::Nothing:
        while( next < end )
        {
            const auto ptr = (const LockEventShared*)(const LockEvent*)next->ptr;
            if( next->lockCount != 0 )
            {
                const auto wait = next->waitList | ptr->waitShared;
                if( GetThreadBit( next->lockingThread ) == threadBit )
                {
                    nextState = AreOtherWaiting( wait, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
                    break;
                }
                else if( IsThreadWaiting( wait, threadBit ) )
                {
                    nextState = LockState::WaitLock;
                    break;
                }
            }
            else if( IsThreadWaiting( ptr->sharedList, threadBit ) )
            {
                nextState = ( next->waitList != 0 ) ? LockState::HasBlockingLock : LockState::HasLock;
                break;
            }
            else if( ptr->sharedList != 0 && IsThreadWaiting( next->waitList, threadBit ) )
            {
                nextState = LockState::WaitLock;
                break;
            }
            next++;
        }
        break;
    case LockState::HasLock:
        while( next < end )
        {
            const auto ptr = (const LockEventShared*)(const LockEvent*)next->ptr;
            if( next->lockCount == 0 && !IsThreadWaiting( ptr->sharedList, threadBit ) )
            {
                nextState = LockState::Nothing;
                break;
            }
            if( next->waitList != 0 )
            {
                if( AreOtherWaiting( next->waitList, threadBit ) )
                {
                    nextState = LockState::HasBlockingLock;
                }
                break;
            }
            else if( !IsThreadWaiting( ptr->sharedList, threadBit ) && ptr->waitShared != 0 )
            {
                nextState = LockState::HasBlockingLock;
                break;
            }
            if( next->waitList != it->waitList || ptr->waitShared != itptr->waitShared || next->lockCount != it->lockCount || ptr->sharedList != itptr->sharedList )
            {
                break;
            }
            next++;
        }
        break;
    case LockState::HasBlockingLock:
        while( next < end )
        {
            const auto ptr = (const LockEventShared*)(const LockEvent*)next->ptr;
            if( next->lockCount == 0 && !IsThreadWaiting( ptr->sharedList, threadBit ) )
            {
                nextState = LockState::Nothing;
                break;
            }
            if( next->waitList != it->waitList || ptr->waitShared != itptr->waitShared || next->lockCount != it->lockCount || ptr->sharedList != itptr->sharedList )
            {
                break;
            }
            next++;
        }
        break;
    case LockState::WaitLock:
        while( next < end )
        {
            const auto ptr = (const LockEventShared*)(const LockEvent*)next->ptr;
            if( GetThreadBit( next->lockingThread ) == threadBit )
            {
                const auto wait = next->waitList | ptr->waitShared;
                nextState = AreOtherWaiting( wait, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
                break;
            }
            if( IsThreadWaiting( ptr->sharedList, threadBit ) )
            {
                nextState = ( next->waitList != 0 ) ? LockState::HasBlockingLock : LockState::HasLock;
                break;
            }
            if( next->lockingThread != it->lockingThread )
            {
                break;
            }
            if( next->lockCount == 0 && !IsThreadWaiting( ptr->waitShared, threadBit ) )
            {
                break;
            }
            next++;
        }
        break;
    default:
        assert( false );
        break;
    }

    return next;
}

static LockState CombineLockState( LockState state, LockState next )
{
    return (LockState)std::max( (int)state, (int)next );
}

void View::DrawLockHeader( uint32_t id, const LockMap& lockmap, const SourceLocation& srcloc, bool hover, ImDrawList* draw, const ImVec2& wpos, float w, float ty, float offset, uint8_t tid )
{
    char buf[1024];
    if( lockmap.customName.Active() )
    {
        sprintf( buf, "%" PRIu32 ": %s", id, m_worker.GetString( lockmap.customName ) );
    }
    else
    {
        sprintf( buf, "%" PRIu32 ": %s", id, m_worker.GetString( srcloc.function ) );
    }
    ImGui::PushFont( m_smallFont );
    DrawTextContrast( draw, wpos + ImVec2( 0, offset ), 0xFF8888FF, buf );
    ImGui::PopFont();
    if( hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty + 1 ) ) )
    {
        m_lockHoverHighlight = id;

        if( ImGui::IsMouseHoveringRect( wpos + ImVec2( 0, offset ), wpos + ImVec2( ty + ImGui::CalcTextSize( buf ).x, offset + ty + 1 ) ) )
        {
            const auto& range = lockmap.range[tid];
            const auto activity = range.end - range.start;
            const auto traceLen = m_worker.GetLastTime();

            int64_t timeAnnounce = lockmap.timeAnnounce;
            int64_t timeTerminate = lockmap.timeTerminate;
            if( !lockmap.timeline.empty() )
            {
                if( timeAnnounce <= 0 )
                {
                    timeAnnounce = lockmap.timeline.front().ptr->Time();
                }
                if( timeTerminate <= 0 )
                {
                    timeTerminate = lockmap.timeline.back().ptr->Time();
                }
            }
            const auto lockLen = timeTerminate - timeAnnounce;

            ImGui::BeginTooltip();
            switch( lockmap.type )
            {
            case LockType::Lockable:
                TextFocused( "Type:", "lockable" );
                break;
            case LockType::SharedLockable:
                TextFocused( "Type:", "shared lockable" );
                break;
            default:
                assert( false );
                break;
            }
            ImGui::TextUnformatted( LocationToString( m_worker.GetString( srcloc.file ), srcloc.line ) );
            ImGui::Separator();
            TextFocused( ICON_FA_SHUFFLE " Appeared at", TimeToString( range.start ) );
            TextFocused( ICON_FA_SHUFFLE " Last event at", TimeToString( range.end ) );
            TextFocused( ICON_FA_SHUFFLE " Activity time:", TimeToString( activity ) );
            ImGui::SameLine();
            ImGui::TextDisabled( "(%.2f%% of lock lifetime)", activity / double( lockLen ) * 100 );
            ImGui::Separator();
            TextFocused( "Announce time:", TimeToString( timeAnnounce ) );
            TextFocused( "Terminate time:", TimeToString( timeTerminate ) );
            TextFocused( "Lifetime:", TimeToString( lockLen ) );
            ImGui::SameLine();
            ImGui::TextDisabled( "(%.2f%% of trace time)", lockLen / double( traceLen ) * 100 );
            ImGui::Separator();
            TextDisabledUnformatted( "Thread list:" );
            ImGui::Indent( ty );
            for( const auto& t : lockmap.threadList )
            {
                SmallColorBox( GetThreadColor( t, 0 ) );
                ImGui::SameLine();
                ImGui::TextUnformatted( m_worker.GetThreadName( t ) );
            }
            ImGui::Unindent( ty );
            ImGui::Separator();
            TextFocused( "Lock events:", RealToString( lockmap.timeline.size() ) );
            ImGui::EndTooltip();

            if( IsMouseClicked( 0 ) )
            {
                m_lockInfoWindow = id;
            }
            if( IsMouseClicked( 2 ) )
            {
                ZoomToRange( range.start, range.end );
            }
        }
    }
}

int View::DrawLocks( uint64_t tid, bool hover, double pxns, const ImVec2& wpos, int _offset, LockHighlight& highlight, float yMin, float yMax )
{
    const auto delay = m_worker.GetDelay();
    const auto resolution = m_worker.GetResolution();
    const auto w = ImGui::GetContentRegionAvail().x - 1;
    ImGui::PushFont( m_smallFont );
    const auto ty = ImGui::GetTextLineHeight();
    ImGui::PopFont();
    const auto ostep = ty + 1;
    auto draw = ImGui::GetWindowDrawList();
    const auto dsz = delay * pxns;
    const auto rsz = resolution * pxns;
    const auto dpos = wpos + ImVec2( 0.5f, 0.5f );

    const auto ty025 = round( ty * 0.25f );
    const auto ty05  = round( ty * 0.5f );
    const auto ty075 = round( ty * 0.75f );

    int cnt = 0;
    for( const auto& v : m_worker.GetLockMap() )
    {
        const auto& lockmap = *v.second;
        if( !lockmap.valid || !Vis( &lockmap ) ) continue;
        if( m_vd.onlyContendedLocks && ( lockmap.threadList.size() == 1 || !lockmap.isContended ) && m_lockInfoWindow != v.first ) continue;

        auto it = lockmap.threadMap.find( tid );
        if( it == lockmap.threadMap.end() ) continue;

        const auto offset = _offset + ostep * cnt;

        const auto& range = lockmap.range[it->second];
        const auto& tl = lockmap.timeline;
        assert( !tl.empty() );
        if( range.start > m_vd.zvEnd || range.end < m_vd.zvStart )
        {
            if( m_lockInfoWindow == v.first )
            {
                draw->AddRectFilled( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x2288DD88 );
                draw->AddRect( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x4488DD88 );
                DrawLockHeader( v.first, lockmap, m_worker.GetSourceLocation( lockmap.srcloc ), hover, draw, wpos, w, ty, offset, it->second );
                cnt++;
            }

            continue;
        }

        auto GetNextLockFunc = lockmap.type == LockType::Lockable ? GetNextLockEvent : GetNextLockEventShared;

        const auto thread = it->second;
        const auto threadBit = GetThreadBit( thread );

        auto vbegin = std::lower_bound( tl.begin(), tl.end(), std::max( range.start, m_vd.zvStart - delay ), [] ( const auto& l, const auto& r ) { return l.ptr->Time() < r; } );
        const auto vend = std::lower_bound( vbegin, tl.end(), std::min( range.end, m_vd.zvEnd + resolution ), [] ( const auto& l, const auto& r ) { return l.ptr->Time() < r; } );

        if( vbegin > tl.begin() ) vbegin--;

        LockState state = LockState::Nothing;
        if( lockmap.type == LockType::Lockable )
        {
            if( vbegin->lockCount != 0 )
            {
                if( vbegin->lockingThread == thread )
                {
                    state = AreOtherWaiting( vbegin->waitList, threadBit ) ? LockState::HasBlockingLock : LockState::HasLock;
                }
                else if( IsThreadWaiting( vbegin->waitList, threadBit ) )
                {
                    state = LockState::WaitLock;
                }
            }
        }
        else
        {
            auto ptr = (const LockEventShared*)(const LockEvent*)vbegin->ptr;
            if( vbegin->lockCount != 0 )
            {
                if( vbegin->lockingThread == thread )
                {
                    state = ( AreOtherWaiting( vbegin->waitList, threadBit ) || AreOtherWaiting( ptr->waitShared, threadBit ) ) ? LockState::HasBlockingLock : LockState::HasLock;
                }
                else if( IsThreadWaiting( vbegin->waitList, threadBit ) || IsThreadWaiting( ptr->waitShared, threadBit ) )
                {
                    state = LockState::WaitLock;
                }
            }
            else if( IsThreadWaiting( ptr->sharedList, threadBit ) )
            {
                state = vbegin->waitList != 0 ? LockState::HasBlockingLock : LockState::HasLock;
            }
            else if( ptr->sharedList != 0 && IsThreadWaiting( vbegin->waitList, threadBit ) )
            {
                state = LockState::WaitLock;
            }
        }

        const auto yPos = wpos.y + offset;
        if( yPos + ostep >= yMin && yPos <= yMax )
        {
            bool drawn = false;
            const auto& srcloc = m_worker.GetSourceLocation( lockmap.srcloc );

            double pxend = 0;
            for(;;)
            {
                if( m_vd.onlyContendedLocks )
                {
                    while( vbegin < vend && ( state == LockState::Nothing || state == LockState::HasLock ) )
                    {
                        vbegin = GetNextLockFunc( vbegin, vend, state, threadBit );
                    }
                }
                else
                {
                    while( vbegin < vend && state == LockState::Nothing )
                    {
                        vbegin = GetNextLockFunc( vbegin, vend, state, threadBit );
                    }
                }
                if( vbegin >= vend ) break;

                assert( state != LockState::Nothing && ( !m_vd.onlyContendedLocks || state != LockState::HasLock ) );
                drawn = true;

                LockState drawState = state;
                auto next = GetNextLockFunc( vbegin, vend, state, threadBit );

                const auto t0 = vbegin->ptr->Time();
                int64_t t1 = next == tl.end() ? m_worker.GetLastTime() : next->ptr->Time();
                const auto px0 = std::max( pxend, ( t0 - m_vd.zvStart ) * pxns );
                auto tx0 = px0;
                double px1 = ( t1 - m_vd.zvStart ) * pxns;
                uint64_t condensed = 0;

                if( m_vd.onlyContendedLocks )
                {
                    for(;;)
                    {
                        if( next >= vend || px1 - tx0 > MinVisSize ) break;
                        auto n = next;
                        auto ns = state;
                        while( n < vend && ( ns == LockState::Nothing || ns == LockState::HasLock ) )
                        {
                            n = GetNextLockFunc( n, vend, ns, threadBit );
                        }
                        if( n >= vend ) break;
                        if( n == next )
                        {
                            n = GetNextLockFunc( n, vend, ns, threadBit );
                        }
                        drawState = CombineLockState( drawState, state );
                        condensed++;
                        const auto t2 = n == tl.end() ? m_worker.GetLastTime() : n->ptr->Time();
                        const auto px2 = ( t2 - m_vd.zvStart ) * pxns;
                        if( px2 - px1 > MinVisSize ) break;
                        if( drawState != ns && px2 - px0 > MinVisSize && !( ns == LockState::Nothing || ns == LockState::HasLock ) ) break;
                        t1 = t2;
                        tx0 = px1;
                        px1 = px2;
                        next = n;
                        state = ns;
                    }
                }
                else
                {
                    for(;;)
                    {
                        if( next >= vend || px1 - tx0 > MinVisSize ) break;
                        auto n = next;
                        auto ns = state;
                        while( n < vend && ns == LockState::Nothing )
                        {
                            n = GetNextLockFunc( n, vend, ns, threadBit );
                        }
                        if( n >= vend ) break;
                        if( n == next )
                        {
                            n = GetNextLockFunc( n, vend, ns, threadBit );
                        }
                        drawState = CombineLockState( drawState, state );
                        condensed++;
                        const auto t2 = n == tl.end() ? m_worker.GetLastTime() : n->ptr->Time();
                        const auto px2 = ( t2 - m_vd.zvStart ) * pxns;
                        if( px2 - px1 > MinVisSize ) break;
                        if( drawState != ns && px2 - px0 > MinVisSize && ns != LockState::Nothing ) break;
                        t1 = t2;
                        tx0 = px1;
                        px1 = px2;
                        next = n;
                        state = ns;
                    }
                }

                pxend = std::max( { px1, px0+MinVisSize, px0 + pxns * 0.5 } );

                bool itemHovered = hover && ImGui::IsMouseHoveringRect( wpos + ImVec2( std::max( px0, -10.0 ), offset ), wpos + ImVec2( std::min( pxend, double( w + 10 ) ), offset + ty + 1 ) );
                if( itemHovered )
                {
                    if( IsMouseClicked( 0 ) )
                    {
                        m_lockInfoWindow = v.first;
                    }
                    if( IsMouseClicked( 2 ) )
                    {
                        ZoomToRange( t0, t1 );
                    }

                    if( condensed > 1 )
                    {
                        ImGui::BeginTooltip();
                        TextFocused( "Multiple lock events:", RealToString( condensed ) );
                        ImGui::EndTooltip();
                    }
                    else
                    {
                        highlight.blocked = drawState == LockState::HasBlockingLock;
                        if( !highlight.blocked )
                        {
                            highlight.id = v.first;
                            highlight.begin = t0;
                            highlight.end = t1;
                            highlight.thread = thread;
                            highlight.blocked = false;
                        }
                        else
                        {
                            auto b = vbegin;
                            while( b != tl.begin() )
                            {
                                if( b->lockingThread != vbegin->lockingThread )
                                {
                                    break;
                                }
                                b--;
                            }
                            b++;
                            highlight.begin = b->ptr->Time();

                            auto e = next;
                            while( e != tl.end() )
                            {
                                if( e->lockingThread != next->lockingThread )
                                {
                                    highlight.id = v.first;
                                    highlight.end = e->ptr->Time();
                                    highlight.thread = thread;
                                    break;
                                }
                                e++;
                            }
                        }

                        ImGui::BeginTooltip();
                        if( v.second->customName.Active() )
                        {
                            ImGui::Text( "Lock #%" PRIu32 ": %s", v.first, m_worker.GetString( v.second->customName ) );
                        }
                        else
                        {
                            ImGui::Text( "Lock #%" PRIu32 ": %s", v.first, m_worker.GetString( srcloc.function ) );
                        }
                        ImGui::Separator();
                        ImGui::TextUnformatted( LocationToString( m_worker.GetString( srcloc.file ), srcloc.line ) );
                        TextFocused( "Time:", TimeToString( t1 - t0 ) );
                        ImGui::Separator();

                        int16_t markloc = 0;
                        auto it = vbegin;
                        for(;;)
                        {
                            if( it->ptr->thread == thread )
                            {
                                if( ( it->lockingThread == thread || IsThreadWaiting( it->waitList, threadBit ) ) && it->ptr->SrcLoc() != 0 )
                                {
                                    markloc = it->ptr->SrcLoc();
                                    break;
                                }
                            }
                            if( it == tl.begin() ) break;
                            --it;
                        }
                        if( markloc != 0 )
                        {
                            const auto& marklocdata = m_worker.GetSourceLocation( markloc );
                            ImGui::TextUnformatted( "Lock event location:" );
                            ImGui::TextUnformatted( m_worker.GetString( marklocdata.function ) );
                            ImGui::TextUnformatted( LocationToString( m_worker.GetString( marklocdata.file ), marklocdata.line ) );
                            ImGui::Separator();
                        }

                        if( lockmap.type == LockType::Lockable )
                        {
                            switch( drawState )
                            {
                            case LockState::HasLock:
                                if( vbegin->lockCount == 1 )
                                {
                                    ImGui::Text( "Thread \"%s\" has lock. No other threads are waiting.", m_worker.GetThreadName( tid ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" has %i locks. No other threads are waiting.", m_worker.GetThreadName( tid ), vbegin->lockCount );
                                }
                                if( vbegin->waitList != 0 )
                                {
                                    assert( !AreOtherWaiting( next->waitList, threadBit ) );
                                    ImGui::TextUnformatted( "Recursive lock acquire in thread." );
                                }
                                break;
                            case LockState::HasBlockingLock:
                            {
                                if( vbegin->lockCount == 1 )
                                {
                                    ImGui::Text( "Thread \"%s\" has lock. Blocked threads (%" PRIu64 "):", m_worker.GetThreadName( tid ), TracyCountBits( vbegin->waitList ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" has %i locks. Blocked threads (%" PRIu64 "):", m_worker.GetThreadName( tid ), vbegin->lockCount, TracyCountBits( vbegin->waitList ) );
                                }
                                auto waitList = vbegin->waitList;
                                int t = 0;
                                ImGui::Indent( ty );
                                while( waitList != 0 )
                                {
                                    if( waitList & 0x1 )
                                    {
                                        ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                    }
                                    waitList >>= 1;
                                    t++;
                                }
                                ImGui::Unindent( ty );
                                break;
                            }
                            case LockState::WaitLock:
                            {
                                if( vbegin->lockCount > 0 )
                                {
                                    ImGui::Text( "Thread \"%s\" is blocked by other thread:", m_worker.GetThreadName( tid ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" waits to obtain lock after release by thread:", m_worker.GetThreadName( tid ) );
                                }
                                ImGui::Indent( ty );
                                ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[vbegin->lockingThread] ) );
                                ImGui::Unindent( ty );
                                break;
                            }
                            default:
                                assert( false );
                                break;
                            }
                        }
                        else
                        {
                            const auto ptr = (const LockEventShared*)(const LockEvent*)vbegin->ptr;
                            switch( drawState )
                            {
                            case LockState::HasLock:
                                assert( vbegin->waitList == 0 );
                                if( ptr->sharedList == 0 )
                                {
                                    assert( vbegin->lockCount == 1 );
                                    ImGui::Text( "Thread \"%s\" has lock. No other threads are waiting.", m_worker.GetThreadName( tid ) );
                                }
                                else if( TracyCountBits( ptr->sharedList ) == 1 )
                                {
                                    ImGui::Text( "Thread \"%s\" has a sole shared lock. No other threads are waiting.", m_worker.GetThreadName( tid ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" has shared lock. No other threads are waiting.", m_worker.GetThreadName( tid ) );
                                    ImGui::Text( "Threads sharing the lock (%" PRIu64 "):", TracyCountBits( ptr->sharedList ) - 1 );
                                    auto sharedList = ptr->sharedList;
                                    int t = 0;
                                    ImGui::Indent( ty );
                                    while( sharedList != 0 )
                                    {
                                        if( sharedList & 0x1 && t != thread )
                                        {
                                            ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                        }
                                        sharedList >>= 1;
                                        t++;
                                    }
                                    ImGui::Unindent( ty );
                                }
                                break;
                            case LockState::HasBlockingLock:
                            {
                                if( ptr->sharedList == 0 )
                                {
                                    assert( vbegin->lockCount == 1 );
                                    ImGui::Text( "Thread \"%s\" has lock. Blocked threads (%" PRIu64 "):", m_worker.GetThreadName( tid ), TracyCountBits( vbegin->waitList ) + TracyCountBits( ptr->waitShared ) );
                                }
                                else if( TracyCountBits( ptr->sharedList ) == 1 )
                                {
                                    ImGui::Text( "Thread \"%s\" has a sole shared lock. Blocked threads (%" PRIu64 "):", m_worker.GetThreadName( tid ), TracyCountBits( vbegin->waitList ) + TracyCountBits( ptr->waitShared ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" has shared lock.", m_worker.GetThreadName( tid ) );
                                    ImGui::Text( "Threads sharing the lock (%" PRIu64 "):", TracyCountBits( ptr->sharedList ) - 1 );
                                    auto sharedList = ptr->sharedList;
                                    int t = 0;
                                    ImGui::Indent( ty );
                                    while( sharedList != 0 )
                                    {
                                        if( sharedList & 0x1 && t != thread )
                                        {
                                            ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                        }
                                        sharedList >>= 1;
                                        t++;
                                    }
                                    ImGui::Unindent( ty );
                                    ImGui::Text( "Blocked threads (%" PRIu64 "):", TracyCountBits( vbegin->waitList ) + TracyCountBits( ptr->waitShared ) );
                                }

                                auto waitList = vbegin->waitList;
                                int t = 0;
                                ImGui::Indent( ty );
                                while( waitList != 0 )
                                {
                                    if( waitList & 0x1 )
                                    {
                                        ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                    }
                                    waitList >>= 1;
                                    t++;
                                }
                                auto waitShared = ptr->waitShared;
                                t = 0;
                                while( waitShared != 0 )
                                {
                                    if( waitShared & 0x1 )
                                    {
                                        ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                    }
                                    waitShared >>= 1;
                                    t++;
                                }
                                ImGui::Unindent( ty );
                                break;
                            }
                            case LockState::WaitLock:
                            {
                                assert( vbegin->lockCount == 0 || vbegin->lockCount == 1 );
                                if( vbegin->lockCount != 0 || ptr->sharedList != 0 )
                                {
                                    ImGui::Text( "Thread \"%s\" is blocked by other threads (%" PRIu64 "):", m_worker.GetThreadName( tid ), vbegin->lockCount + TracyCountBits( ptr->sharedList ) );
                                }
                                else
                                {
                                    ImGui::Text( "Thread \"%s\" waits to obtain lock after release by thread:", m_worker.GetThreadName( tid ) );
                                }
                                ImGui::Indent( ty );
                                if( vbegin->lockCount != 0 )
                                {
                                    ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[vbegin->lockingThread] ) );
                                }
                                auto sharedList = ptr->sharedList;
                                int t = 0;
                                while( sharedList != 0 )
                                {
                                    if( sharedList & 0x1 )
                                    {
                                        ImGui::Text( "\"%s\"", m_worker.GetThreadName( lockmap.threadList[t] ) );
                                    }
                                    sharedList >>= 1;
                                    t++;
                                }
                                ImGui::Unindent( ty );
                                break;
                            }
                            default:
                                assert( false );
                                break;
                            }
                        }
                        ImGui::EndTooltip();
                    }
                }

                const auto cfilled  = drawState == LockState::HasLock ? 0xFF228A22 : ( drawState == LockState::HasBlockingLock ? 0xFF228A8A : 0xFF2222BD );
                draw->AddRectFilled( wpos + ImVec2( std::max( px0, -10.0 ), offset ), wpos + ImVec2( std::min( pxend, double( w + 10 ) ), offset + ty ), cfilled );
                if( m_lockHighlight.thread != thread && ( drawState == LockState::HasBlockingLock ) != m_lockHighlight.blocked && next != tl.end() && m_lockHighlight.id == int64_t( v.first ) && m_lockHighlight.begin <= vbegin->ptr->Time() && m_lockHighlight.end >= next->ptr->Time() )
                {
                    const auto t = uint8_t( ( sin( std::chrono::duration_cast<std::chrono::milliseconds>( std::chrono::system_clock::now().time_since_epoch() ).count() * 0.01 ) * 0.5 + 0.5 ) * 255 );
                    draw->AddRect( wpos + ImVec2( std::max( px0, -10.0 ), offset ), wpos + ImVec2( std::min( pxend, double( w + 10 ) ), offset + ty ), 0x00FFFFFF | ( t << 24 ), 0.f, -1, 2.f );
                }
                else if( condensed == 0 )
                {
                    const auto coutline = drawState == LockState::HasLock ? 0xFF3BA33B : ( drawState == LockState::HasBlockingLock ? 0xFF3BA3A3 : 0xFF3B3BD6 );
                    draw->AddRect( wpos + ImVec2( std::max( px0, -10.0 ), offset ), wpos + ImVec2( std::min( pxend, double( w + 10 ) ), offset + ty ), coutline );
                }
                else if( condensed > 1 )
                {
                    DrawZigZag( draw, wpos + ImVec2( 0, offset + ty05 ), px0, pxend, ty025, DarkenColor( cfilled ) );
                }

                const auto rx0 = ( t0 - m_vd.zvStart ) * pxns;
                if( dsz >= MinVisSize )
                {
                    draw->AddRectFilled( wpos + ImVec2( rx0, offset ), wpos + ImVec2( std::min( rx0+dsz, px1 ), offset + ty ), 0x882222DD );
                }
                if( rsz >= MinVisSize )
                {
                    DrawLine( draw, dpos + ImVec2( rx0 + rsz, offset + ty05  ), dpos + ImVec2( rx0 - rsz, offset + ty05  ), 0xAAFFFFFF );
                    DrawLine( draw, dpos + ImVec2( rx0 + rsz, offset + ty025 ), dpos + ImVec2( rx0 + rsz, offset + ty075 ), 0xAAFFFFFF );
                    DrawLine( draw, dpos + ImVec2( rx0 - rsz, offset + ty025 ), dpos + ImVec2( rx0 - rsz, offset + ty075 ), 0xAAFFFFFF );

                    DrawLine( draw, dpos + ImVec2( px1 + rsz, offset + ty05  ), dpos + ImVec2( px1 - rsz, offset + ty05  ), 0xAAFFFFFF );
                    DrawLine( draw, dpos + ImVec2( px1 + rsz, offset + ty025 ), dpos + ImVec2( px1 + rsz, offset + ty075 ), 0xAAFFFFFF );
                    DrawLine( draw, dpos + ImVec2( px1 - rsz, offset + ty025 ), dpos + ImVec2( px1 - rsz, offset + ty075 ), 0xAAFFFFFF );
                }

                vbegin = next;
            }

            if( drawn || m_lockInfoWindow == v.first )
            {
                if( m_lockInfoWindow == v.first )
                {
                    draw->AddRectFilled( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x2288DD88 );
                    draw->AddRect( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x4488DD88 );
                }
                else if( m_lockHoverHighlight == v.first )
                {
                    draw->AddRectFilled( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x228888DD );
                    draw->AddRect( wpos + ImVec2( 0, offset ), wpos + ImVec2( w, offset + ty ), 0x448888DD );
                }

                DrawLockHeader( v.first, lockmap, srcloc, hover, draw, wpos, w, ty, offset, it->second );
                cnt++;
            }
        }
        else
        {
            while( vbegin < vend && ( state == LockState::Nothing || ( m_vd.onlyContendedLocks && state == LockState::HasLock ) ) )
            {
                vbegin = GetNextLockFunc( vbegin, vend, state, threadBit );
            }
            if( vbegin < vend ) cnt++;
        }
    }
    return cnt;
}

void View::DrawLockInfoWindow()
{
    bool visible = true;
    ImGui::Begin( "Lock info", &visible, ImGuiWindowFlags_AlwaysAutoResize );
    if( !ImGui::GetCurrentWindowRead()->SkipItems )
    {
        auto it = m_worker.GetLockMap().find( m_lockInfoWindow );
        assert( it != m_worker.GetLockMap().end() );
        const auto& lock = *it->second;
        const auto& srcloc = m_worker.GetSourceLocation( lock.srcloc );
        auto fileName = m_worker.GetString( srcloc.file );

        int64_t timeAnnounce = lock.timeAnnounce;
        int64_t timeTerminate = lock.timeTerminate;
        if( !lock.timeline.empty() )
        {
            if( timeAnnounce <= 0 )
            {
                timeAnnounce = lock.timeline.front().ptr->Time();
            }
            if( timeTerminate <= 0 )
            {
                timeTerminate = lock.timeline.back().ptr->Time();
            }
        }

        bool waitState = false;
        bool holdState = false;
        int64_t waitStartTime = 0;
        int64_t holdStartTime = 0;
        int64_t waitTotalTime = 0;
        int64_t holdTotalTime = 0;
        uint32_t maxWaitingThreads = 0;
        for( auto& v : lock.timeline )
        {
            if( holdState )
            {
                if( v.lockCount == 0 )
                {
                    holdTotalTime += v.ptr->Time() - holdStartTime;
                    holdState = false;
                }
            }
            else
            {
                if( v.lockCount != 0 )
                {
                    holdStartTime = v.ptr->Time();
                    holdState = true;
                }
            }
            if( waitState )
            {
                if( v.waitList == 0 )
                {
                    waitTotalTime += v.ptr->Time() - waitStartTime;
                    waitState = false;
                }
                else
                {
                    maxWaitingThreads = std::max<uint32_t>( maxWaitingThreads, TracyCountBits( v.waitList ) );
                }
            }
            else
            {
                if( v.waitList != 0 )
                {
                    waitStartTime = v.ptr->Time();
                    waitState = true;
                    maxWaitingThreads = std::max<uint32_t>( maxWaitingThreads, TracyCountBits( v.waitList ) );
                }
            }
        }

        ImGui::PushFont( m_bigFont );
        if( lock.customName.Active() )
        {
            ImGui::Text( "Lock #%" PRIu32 ": %s", m_lockInfoWindow, m_worker.GetString( lock.customName ) );
        }
        else
        {
            ImGui::Text( "Lock #%" PRIu32 ": %s", m_lockInfoWindow, m_worker.GetString( srcloc.function ) );
        }
        ImGui::PopFont();
        if( lock.customName.Active() )
        {
            TextFocused( "Name:", m_worker.GetString( srcloc.function ) );
        }
        TextDisabledUnformatted( "Location:" );
        if( m_lockInfoAnim.Match( m_lockInfoWindow ) )
        {
            const auto time = m_lockInfoAnim.Time();
            const auto indentVal = sin( time * 60.f ) * 10.f * time;
            ImGui::SameLine( 0, ImGui::GetStyle().ItemSpacing.x + indentVal );
        }
        else
        {
            ImGui::SameLine();
        }
        ImGui::TextUnformatted( LocationToString( fileName, srcloc.line ) );
        if( ImGui::IsItemHovered() )
        {
            DrawSourceTooltip( fileName, srcloc.line );
            if( ImGui::IsItemClicked( 1 ) )
            {
                if( SourceFileValid( fileName, m_worker.GetCaptureTime(), *this, m_worker ) )
                {
                    ViewSource( fileName, srcloc.line );
                }
                else
                {
                    m_lockInfoAnim.Enable( m_lockInfoWindow, 0.5f );
                }
            }
        }
        ImGui::Separator();

        switch( lock.type )
        {
        case LockType::Lockable:
            TextFocused( "Type:", "lockable" );
            break;
        case LockType::SharedLockable:
            TextFocused( "Type:", "shared lockable" );
            break;
        default:
            assert( false );
            break;
        }
        TextFocused( "Lock events:", RealToString( lock.timeline.size() ) );
        ImGui::Separator();

        const auto announce = timeAnnounce;
        const auto terminate = timeTerminate;
        const auto lifetime = timeTerminate - timeAnnounce;
        const auto traceLen = m_worker.GetLastTime();

        TextFocused( "Announce time:", TimeToString( announce ) );
        TextFocused( "Terminate time:", TimeToString( terminate ) );
        TextFocused( "Lifetime:", TimeToString( lifetime ) );
        ImGui::SameLine();
        ImGui::TextDisabled( "(%.2f%% of trace time)", lifetime / double( traceLen ) * 100 );
        ImGui::Separator();

        TextFocused( "Lock hold time:", TimeToString( holdTotalTime ) );
        ImGui::SameLine();
        ImGui::TextDisabled( "(%.2f%% of lock lifetime)", holdTotalTime / float( lifetime ) * 100.f );
        TextFocused( "Lock wait time:", TimeToString( waitTotalTime ) );
        ImGui::SameLine();
        ImGui::TextDisabled( "(%.2f%% of lock lifetime)", waitTotalTime / float( lifetime ) * 100.f );
        TextFocused( "Max waiting threads:", RealToString( maxWaitingThreads ) );
        ImGui::Separator();

        const auto threadList = ImGui::TreeNode( "Thread list" );
        ImGui::SameLine();
        ImGui::TextDisabled( "(%zu)", lock.threadList.size() );
        if( threadList )
        {
            for( const auto& t : lock.threadList )
            {
                SmallColorBox( GetThreadColor( t, 0 ) );
                ImGui::SameLine();
                ImGui::TextUnformatted( m_worker.GetThreadName( t ) );
                ImGui::SameLine();
                ImGui::TextDisabled( "(%s)", RealToString( t ) );
            }
            ImGui::TreePop();
        }
    }
    ImGui::End();
    if( !visible ) m_lockInfoWindow = InvalidId;
}

}