예제 #1
0
        public override void ApplyFilter(DirectXCanvas canvas, ThreadScroll scroll, HashSet <EventDescription> descriptions)
        {
            Filter = EventFilter.Create(EventData, descriptions);

            if (Filter != null)
            {
                DynamicMesh builder = canvas.CreateMesh();

                foreach (EventFrame frame in EventData.Events)
                {
                    Interval interval = scroll.TimeToUnit(frame.Header);
                    builder.AddRect(new Rect(interval.Left, 0.0, interval.Width, 1.0), FilterFrameColor);
                }

                foreach (Entry entry in Filter.Entries)
                {
                    Interval interval = scroll.TimeToUnit(entry);
                    builder.AddRect(new Rect(interval.Left, 0.0, interval.Width, 1.0), FilterEntryColor);
                }

                SharpDX.Utilities.Dispose(ref FilterMesh);
                FilterMesh = builder.Freeze(canvas.RenderDevice);
                //if (FilterMesh != null)
                //    FilterMesh.UseAlpha = true;
            }
            else
            {
                SharpDX.Utilities.Dispose(ref FilterMesh);
            }
        }
예제 #2
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        public override void Export(Point point, ThreadScroll scroll)
        {
            EventNode  node  = null;
            EventFrame frame = null;
            int        level = FindNode(point, scroll, out frame, out node);

            if (EventNodeSelected != null)
            {
                ITick tick = scroll.PixelToTime(point.X);
                if (frame == null)
                {
                    frame = FindFrame(tick);
                }
                if (frame != null)
                {
                    EventNodeSelected(this, frame, node);
                }
                if (node != null)
                {
                    var option = new ArchiveOption
                    {
                        Mode    = ArchiveMode.Save,
                        Sources = new List <IArchiveSource>
                        {
                            new NodeArchiveSource(node)
                        },
                        ArchiveType = ArchiveSourceType.Node
                    };
                    ArchiveFactory.Instance().Archive(ref option);
                }
            }
        }
예제 #3
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        public override void Render(DirectXCanvas canvas, ThreadScroll scroll, DirectXCanvas.Layer layer, Rect box)
        {
            Matrix world = GetWorldMatrix(scroll);

            if (layer == DirectXCanvas.Layer.Background)
            {
                ChartMeshes?.ForEach(mesh =>
                {
                    mesh.WorldTransform = world;
                    canvas.Draw(mesh);
                });
            }
        }
예제 #4
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        public override void OnMouseMove(Point point, ThreadScroll scroll)
        {
            EventNode  node  = null;
            EventFrame frame = null;
            int        level = FindNode(point, scroll, out frame, out node);

            if (level != -1)
            {
                Interval interval = scroll.TimeToPixel(node.Entry);
                Rect     rect     = new Rect(interval.Left, Offset + level * RenderParams.BaseHeight + RenderParams.BaseMargin, interval.Width, RenderParams.BaseHeight - RenderParams.BaseMargin);
                EventNodeHover?.Invoke(point, rect, this, node);
            }
            else
            {
                EventNodeHover?.Invoke(point, new Rect(), this, null);
            }
        }
예제 #5
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        public int FindNode(Point point, ThreadScroll scroll, out EventFrame eventFrame, out EventNode eventNode)
        {
            ITick tick = scroll.PixelToTime(point.X);

            int index = Data.Utils.BinarySearchExactIndex(EventData.Events, tick.Start);

            EventFrame resultFrame = null;
            EventNode  resultNode  = null;
            int        resultLevel = -1;

            if (index >= 0)
            {
                EventFrame frame = EventData.Events[index];

                int desiredLevel = (int)(point.Y / RenderParams.BaseHeight);

                GetTree(frame).ForEachChild((node, level) =>
                {
                    if (level > desiredLevel || resultFrame != null)
                    {
                        return(false);
                    }

                    if (level == desiredLevel)
                    {
                        EventNode evNode = (node as EventNode);
                        if (evNode.Entry.Intersect(tick.Start))
                        {
                            resultFrame = frame;
                            resultNode  = evNode;
                            resultLevel = level;
                            return(false);
                        }
                    }

                    return(true);
                });
            }

            eventFrame = resultFrame;
            eventNode  = resultNode;
            return(resultLevel);
        }
예제 #6
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        public override void BuildMesh(DirectXCanvas canvas, ThreadScroll scroll)
        {
            if (Timestamps.Count < 2)
            {
                return;
            }

            DirectX.ComplexDynamicMesh builder = new ComplexDynamicMesh(canvas, DIPSpltCount);

            List <Color[]> entryColors = new List <Color[]>();

            foreach (Entry entry in Entries)
            {
                Color color     = entry.Fill;
                Color gradColor = DirectX.Utils.MultiplyColor(color, GradientColorShade);
                //entryColors.Add(new Color[] { leftColor, rightColor, rightColor, leftColor });
                entryColors.Add(new Color[] { color, color, gradColor, gradColor });
            }

            double left = scroll.TimeToUnit(Timestamps[0]);

            for (int i = 0; i < Timestamps.Count - 1; ++i)
            {
                double right = scroll.TimeToUnit(Timestamps[i + 1]);

                double bottom = 0.0;
                for (int entryIndex = 0; entryIndex < Entries.Count; ++entryIndex)
                {
                    double val    = Entries[entryIndex].Values[i];
                    double height = val / MaxValue;

                    if (height > 0.0)
                    {
                        builder.AddRect(new Rect(left, 1.0 - bottom - height, right - left, height), entryColors[entryIndex]);
                        bottom += height;
                    }
                }

                left = right;
            }

            ChartMeshes = builder.Freeze(canvas.RenderDevice);
        }
예제 #7
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        public override void OnMouseClick(Point point, ThreadScroll scroll)
        {
            EventNode  node  = null;
            EventFrame frame = null;
            int        level = FindNode(point, scroll, out frame, out node);

            if (EventNodeSelected != null)
            {
                ITick tick = scroll.PixelToTime(point.X);
                if (frame == null)
                {
                    frame = FindFrame(tick);
                }
                if (frame != null)
                {
                    EventNodeSelected(this, frame, node);
                }
            }
        }
예제 #8
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        void BuildMeshNode(DirectX.ComplexDynamicMesh builder, ThreadScroll scroll, EventNode node, int level)
        {
            if (level == MaxDepth)
            {
                return;
            }

            Interval interval = scroll.TimeToUnit(node.Entry);

            double y = (double)level / MaxDepth;
            double h = 1.0 / MaxDepth;

            Color nodeColor     = node.Description.ForceColor;
            Color nodeGradColor = DirectX.Utils.MultiplyColor(nodeColor, NodeGradientShade);

            builder.AddRect(new Rect(interval.Left, y, interval.Width, h), new Color[] { nodeColor, nodeGradColor, nodeGradColor, nodeColor });

            foreach (EventNode child in node.Children)
            {
                BuildMeshNode(builder, scroll, child, level + 1);
            }
        }
예제 #9
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        public override void Render(DirectXCanvas canvas, ThreadScroll scroll, DirectXCanvas.Layer layer, Rect box)
        {
            if (layer == DirectXCanvas.Layer.Foreground)
            {
                Matrix world = GetWorldMatrix(scroll, false);

                //Matrix world = new Matrix(scroll.Zoom, 0.0, 0.0, 1.0, -scroll.ViewUnit.Left * scroll.Zoom, 0.0);

                if (BackgroundMeshTris != null)
                {
                    BackgroundMeshTris.WorldTransform = world;
                    canvas.Draw(BackgroundMeshTris);
                }

                if (BackgroundMeshLines != null)
                {
                    BackgroundMeshLines.WorldTransform = world;
                    canvas.Draw(BackgroundMeshLines);
                }

                double yOffset = Offset + (Height - RenderParams.BaseHeight) * 0.5;

                FrameList focusThread = Group.FocusThread;
                if (focusThread != null)
                {
                    Data.Utils.ForEachInsideInterval(focusThread.Events, scroll.ViewTime, (frame, index) =>
                    {
                        Interval interval = scroll.TimeToPixel(frame);
                        String text       = String.Format(System.Globalization.CultureInfo.InvariantCulture, "Frame {0} ({1:0.0}ms)", (uint)index, frame.Duration);

                        // 2 times to emulate "bold"
                        for (int i = 0; i < 2; ++i)
                        {
                            canvas.Text.Draw(new Point(interval.Left, yOffset), text, TextColor, TextAlignment.Center, interval.Width);
                        }
                    });
                }
            }
        }
예제 #10
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        public override void BuildMesh(DirectX.DirectXCanvas canvas, ThreadScroll scroll)
        {
            DirectX.DynamicMesh builder = canvas.CreateMesh();
            builder.Geometry = DirectX.Mesh.GeometryType.Lines;

            double headerHeight = 1.0;            //(Height - RenderParams.BaseMargin) / scroll.Height;

            // Adding Tickers
            if (EnableTickers)
            {
                for (double tick = Math.Ceiling(scroll.TimeSlice.StartMS); tick < Math.Ceiling(scroll.TimeSlice.FinishMS); tick += 1.0)
                {
                    double longX = scroll.TimeToUnit(new Tick {
                        Start = Durable.MsToTick(tick)
                    });
                    builder.AddLine(new Point(longX, headerHeight * 3.0 / 6.0), new Point(longX, headerHeight), TickColor);

                    double medX = scroll.TimeToUnit(new Tick {
                        Start = Durable.MsToTick(tick + 0.5)
                    });
                    builder.AddLine(new Point(medX, headerHeight * 4.0 / 6.0), new Point(medX, headerHeight), TickColor);


                    for (double miniTick = 0.1; miniTick < 1.0; miniTick += 0.1)
                    {
                        double miniX = scroll.TimeToUnit(new Tick {
                            Start = Durable.MsToTick(tick + miniTick)
                        });
                        builder.AddLine(new Point(miniX, headerHeight * 5.0 / 6.0), new Point(miniX, headerHeight), TickColor);
                    }
                }
            }
            BackgroundMeshLines = builder.Freeze(canvas.RenderDevice);

            DirectX.DynamicMesh builderHeader = canvas.CreateMesh();
            builderHeader.AddRect(new Rect(0.0, 0.0, 1.0, headerHeight), new Color[] { GradientTop, GradientTop, GradientBottom, GradientBottom });
            BackgroundMeshTris = builderHeader.Freeze(canvas.RenderDevice);
        }
예제 #11
0
        public override void OnMouseMove(Point point, ThreadScroll scroll)
        {
            ITick tick = scroll.PixelToTime(point.X);

            int index = Data.Utils.BinarySearchClosestIndex(Timestamps, tick.Start);

            if (0 <= index && index + 1 < Timestamps.Count)
            {
                double leftPx  = scroll.TimeToPixel(Timestamps[index]);
                double rightPx = scroll.TimeToPixel(Timestamps[index + 1]);

                Rect rect = new Rect(leftPx, Offset + RenderParams.BaseMargin, rightPx - leftPx, Height - RenderParams.BaseMargin);

                List <double> values = new List <double>();
                for (int entryIndex = 0; entryIndex < Entries.Count; ++entryIndex)
                {
                    values.Add(Entries[entryIndex].Values[index]);
                }

                StringBuilder builder = new StringBuilder();
                builder.AppendFormat("NumCores [{0}]: ", values.Sum());
                for (int i = 0; i < values.Count; ++i)
                {
                    if (i != 0)
                    {
                        builder.Append("+");
                    }
                    builder.Append(values[i]);
                    //builder.AppendFormat("{0}({1})", values[i], entries[i].Name);
                }

                ChartHover?.Invoke(point, rect, builder.ToString());
            }
            else
            {
                ChartHover?.Invoke(point, new Rect(), null);
            }
        }
예제 #12
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 public override void ApplyFilter(DirectXCanvas canvas, ThreadScroll scroll, HashSet <EventDescription> descriptions)
 {
     throw new NotImplementedException();
 }
예제 #13
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 public override void Export(Point point, ThreadScroll scroll)
 {
 }
예제 #14
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        public override void BuildMesh(DirectX.DirectXCanvas canvas, ThreadScroll scroll)
        {
            SetBusy(true);
            UpdateDepth();

            // Build Mesh
            DirectX.ComplexDynamicMesh builder         = new ComplexDynamicMesh(canvas, DIPSplitCount);
            DirectX.ComplexDynamicMesh syncBuilder     = new ComplexDynamicMesh(canvas, DIPSplitCount);
            DirectX.ComplexDynamicMesh syncWorkBuilder = new ComplexDynamicMesh(canvas, DIPSplitCount);

            if (EventData.Sync != null && EventData.Sync != null)
            {
                SyncReason stallReason    = SyncReason.SyncReasonCount;
                long       stallFrom      = 0;
                int        frameSyncIndex = 0;

                for (int i = 0; i < EventData.Sync.Count; i++)
                {
                    SyncInterval sync = EventData.Sync[i];

                    Interval workInterval = scroll.TimeToUnit(sync);

                    //draw work
                    int coreColorIndex = (int)sync.Core;
                    coreColorIndex = coreColorIndex % WorkColors.Length;
                    Color WorkColor = WorkColors[coreColorIndex];
                    syncWorkBuilder.AddRect(new Rect(workInterval.Left, 0, workInterval.Right - workInterval.Left, SyncLineHeight / Height), WorkColor);

                    if (i == 0)
                    {
                        stallReason = sync.Reason;
                        stallFrom   = sync.Finish;
                        continue;
                    }

                    long workStart  = sync.Start;
                    long workFinish = sync.Finish;

                    while (frameSyncIndex < EventData.Events.Count && EventData.Events[frameSyncIndex].Finish < stallFrom)
                    {
                        ++frameSyncIndex;
                    }

                    //Ignoring all the waiting outside marked work to simplify the view
                    if (frameSyncIndex < EventData.Events.Count && EventData.Events[frameSyncIndex].Start <= workStart)
                    {
                        Durable  syncDurable  = new Durable(stallFrom, workStart);
                        Interval syncInterval = scroll.TimeToUnit(syncDurable);

                        double syncWidth = syncInterval.Right - syncInterval.Left;
                        if (syncWidth > 0)
                        {
                            // draw sleep
                            Color waitColor = IsUserInitiatedSync(stallReason) ? SynchronizationColorUser : SynchronizationColor;
                            syncBuilder.AddRect(new Rect(syncInterval.Left, 0, syncWidth, SyncLineHeight / Height), waitColor);
                        }
                    }

                    stallFrom   = workFinish;
                    stallReason = sync.Reason;
                }
            }

            foreach (EventFrame frame in EventData.Events)
            {
                Durable   interval = Group.Board.TimeSlice;
                EventTree tree     = GetTree(frame);
                foreach (EventNode node in tree.Children)
                {
                    BuildMeshNode(builder, scroll, node, 0);
                }
            }

            Blocks       = builder.Freeze(canvas.RenderDevice);
            SyncMesh     = syncBuilder.Freeze(canvas.RenderDevice);
            SyncWorkMesh = syncWorkBuilder.Freeze(canvas.RenderDevice);

            CallstackMeshPolys            = canvas.CreateMesh();
            CallstackMeshPolys.Projection = Mesh.ProjectionType.Pixel;

            CallstackMeshLines            = canvas.CreateMesh();
            CallstackMeshLines.Geometry   = Mesh.GeometryType.Lines;
            CallstackMeshLines.Projection = Mesh.ProjectionType.Pixel;

            SetBusy(false);
        }
예제 #15
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 public override void OnMouseClick(Point point, ThreadScroll scroll)
 {
 }
예제 #16
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 public override void ApplyFilter(DirectXCanvas canvas, ThreadScroll scroll, HashSet <EventDescription> descriptions)
 {
 }
예제 #17
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        public override void Render(DirectX.DirectXCanvas canvas, ThreadScroll scroll, DirectXCanvas.Layer layer, Rect box)
        {
            if (!IsVisible)
            {
                return;
            }

            Matrix world = GetWorldMatrix(scroll);

            if (layer == DirectXCanvas.Layer.Background)
            {
                Draw(canvas, Blocks, world);

                if (FilterMesh != null)
                {
                    FilterMesh.WorldTransform = world;
                    canvas.Draw(FilterMesh);
                }

                if (scroll.SyncDraw == ThreadScroll.SyncDrawType.Wait)
                {
                    Draw(canvas, SyncMesh, world);
                }

                if (SyncWorkMesh != null && scroll.SyncDraw == ThreadScroll.SyncDrawType.Work)
                {
                    Draw(canvas, SyncWorkMesh, world);
                }

                Data.Utils.ForEachInsideInterval(EventData.Events, scroll.ViewTime, frame =>
                {
                    GetTree(frame).ForEachChild((node, level) =>
                    {
                        Entry entry         = (node as EventNode).Entry;
                        Interval intervalPx = scroll.TimeToPixel(entry);

                        if (intervalPx.Width < TextDrawThreshold || intervalPx.Right < 0.0 || level >= MaxDepth)
                        {
                            return(false);
                        }

                        if (intervalPx.Left < 0.0)
                        {
                            intervalPx.Width += intervalPx.Left;
                            intervalPx.Left   = 0.0;
                        }

                        double lum  = Data.Utils.GetLuminance(entry.Description.ForceColor);
                        Color color = lum < Data.Utils.LuminanceThreshold ? Colors.White : Colors.Black;

                        canvas.Text.Draw(new Point(intervalPx.Left + TextDrawOffset, Offset + level * RenderParams.BaseHeight),
                                         entry.Description.Name,
                                         color,
                                         TextAlignment.Left,
                                         intervalPx.Width - TextDrawOffset);

                        return(true);
                    });
                });
            }

            if (layer == DirectXCanvas.Layer.Foreground)
            {
                if (CallstackMeshPolys != null && CallstackMeshLines != null && (scroll.DrawCallstacks != 0 || scroll.DrawDataTags))
                {
                    double width  = CallstackMarkerRadius;
                    double height = CallstackMarkerRadius;
                    double offset = Offset + RenderParams.BaseHeight * 0.5;

                    if (scroll.DrawCallstacks != 0)
                    {
                        Data.Utils.ForEachInsideInterval(EventData.Callstacks, scroll.ViewTime, callstack =>
                        {
                            if ((callstack.Reason & scroll.DrawCallstacks) != 0)
                            {
                                double center = scroll.TimeToPixel(callstack);

                                Point[] points = new Point[] { new Point(center - width, offset), new Point(center, offset - height), new Point(center + width, offset), new Point(center, offset + height) };

                                Color fillColor   = (callstack.Reason == CallStackReason.AutoSample) ? CallstackColor : SystemCallstackColor;
                                Color strokeColor = Colors.Black;

                                CallstackMeshPolys.AddRect(points, fillColor);
                                CallstackMeshLines.AddRect(points, strokeColor);
                            }
                        });
                    }

                    if (scroll.DrawDataTags && EventData.TagsPack != null)
                    {
                        Data.Utils.ForEachInsideInterval(EventData.TagsPack.Tags, scroll.ViewTime, tag =>
                        {
                            double center  = scroll.TimeToPixel(tag);
                            Point[] points = new Point[] { new Point(center - width, Offset), new Point(center + width, Offset), new Point(center, offset) };
                            CallstackMeshPolys.AddTri(points, CallstackColor);
                            CallstackMeshLines.AddTri(points, Colors.Black);
                        });
                    }

                    CallstackMeshPolys.Update(canvas.RenderDevice);
                    CallstackMeshLines.Update(canvas.RenderDevice);

                    canvas.Draw(CallstackMeshPolys);
                    canvas.Draw(CallstackMeshLines);
                }
            }
        }
예제 #18
0
 public abstract void OnMouseHover(Point point, ThreadScroll scroll, List <object> dataContext);
예제 #19
0
 public Matrix GetWorldMatrix(ThreadScroll scroll, bool useMargin = true)
 {
     return(new Matrix(scroll.Zoom, 0.0, 0.0, (Height - (useMargin ? 2.0 * RenderParams.BaseMargin : 0.0)) / scroll.Height,
                       -(scroll.ViewUnit.Left * scroll.Zoom),
                       (Offset + (useMargin ? 1.0 * RenderParams.BaseMargin : 0.0)) / scroll.Height));
 }
예제 #20
0
 public override void Export(Point point, ThreadScroll scroll)
 {
     //throw new NotImplementedException();
 }
예제 #21
0
 public abstract void Render(DirectX.DirectXCanvas canvas, ThreadScroll scroll, DirectXCanvas.Layer layer, Rect box);
예제 #22
0
 public abstract void ApplyFilter(DirectX.DirectXCanvas canvas, ThreadScroll scroll, HashSet <EventDescription> descriptions);
예제 #23
0
 public abstract void OnMouseClick(Point point, ThreadScroll scroll);
예제 #24
0
 public override void OnMouseClick(Point point, ThreadScroll scroll)
 {
     //throw new NotImplementedException();
 }
예제 #25
0
 public override void OnMouseHover(Point point, ThreadScroll scroll, List <object> dataContext)
 {
 }
예제 #26
0
 public override void OnMouseHover(Point point, ThreadScroll scroll, List <object> dataContext)
 {
     //throw new NotImplementedException();
 }
예제 #27
0
 public abstract void BuildMesh(DirectX.DirectXCanvas canvas, ThreadScroll scroll);
예제 #28
0
 public abstract void Export(Point point, ThreadScroll scroll);
예제 #29
0
        public override void OnMouseHover(Point point, ThreadScroll scroll, List <object> dataContext)
        {
            EventNode  node  = null;
            EventFrame frame = null;

            ITick tick = scroll.PixelToTime(point.X);

            if (FindNode(point, scroll, out frame, out node) != -1)
            {
                dataContext.Add(node);
            }

            // show current sync info
            if (EventData.Sync != null && EventData.Sync != null)
            {
                int index = Data.Utils.BinarySearchClosestIndex(EventData.Sync, tick.Start);
                if (index != -1)
                {
                    bool         insideWaitInterval = false;
                    WaitInterval interval           = new WaitInterval()
                    {
                        Start = EventData.Sync[index].Finish, Reason = EventData.Sync[index].Reason
                    };
                    if (index + 1 < EventData.Sync.Count)
                    {
                        if (EventData.Sync[index].Finish < tick.Start && tick.Start < EventData.Sync[index + 1].Start)
                        {
                            UInt64 threadId = EventData.Sync[index].NewThreadId;

                            ThreadDescription threadDesc = null;
                            Group.Board.ThreadDescriptions.TryGetValue(threadId, out threadDesc);

                            interval.newThreadDesc = threadDesc;
                            interval.newThreadId   = threadId;

                            interval.Finish = EventData.Sync[index + 1].Start;
                            dataContext.Add(interval);
                            insideWaitInterval = true;
                        }
                    }

                    if (!insideWaitInterval)
                    {
                        interval.Reason = SyncReason.SyncReasonActive;
                        interval.Start  = EventData.Sync[index].Start;
                        interval.Finish = EventData.Sync[index].Finish;
                        interval.core   = (byte)EventData.Sync[index].Core;
                        dataContext.Add(interval);
                    }
                }
            }

            if (node != null)
            {
                // build all intervals inside selected node
                int from = Data.Utils.BinarySearchClosestIndex(frame.Synchronization, node.Entry.Start);
                int to   = Data.Utils.BinarySearchClosestIndex(frame.Synchronization, node.Entry.Finish);

                if (from >= 0 && to >= from)
                {
                    IntPair[] waitInfo = new IntPair[(int)SyncReason.SyncReasonCount];

                    for (int index = from; index <= to; ++index)
                    {
                        SyncReason reason      = frame.Synchronization[index].Reason;
                        int        reasonIndex = (int)reason;

                        long idleStart  = frame.Synchronization[index].Finish;
                        long idleFinish = (index + 1 < frame.Synchronization.Count) ? frame.Synchronization[index + 1].Start : frame.Finish;

                        if (idleStart > node.Entry.Finish)
                        {
                            continue;
                        }

                        long idleStartClamped  = Math.Max(idleStart, node.Entry.Start);
                        long idleFinishClamped = Math.Min(idleFinish, node.Entry.Finish);
                        long durationInTicks   = idleFinishClamped - idleStartClamped;
                        waitInfo[reasonIndex].duration += durationInTicks;
                        waitInfo[reasonIndex].count++;
                    }

                    NodeWaitIntervalList intervals = new NodeWaitIntervalList();

                    for (int i = 0; i < waitInfo.Length; i++)
                    {
                        if (waitInfo[i].count > 0)
                        {
                            NodeWaitInterval interval = new NodeWaitInterval()
                            {
                                Start = 0, Finish = waitInfo[i].duration, Reason = (SyncReason)i, NodeInterval = node.Entry, Count = waitInfo[i].count
                            };
                            intervals.Add(interval);
                        }
                    }

                    intervals.Sort((a, b) =>
                    {
                        return(Comparer <long> .Default.Compare(b.Finish, a.Finish));
                    });

                    if (intervals.Count > 0)
                    {
                        dataContext.Add(intervals);
                    }
                }
            }             // FindNode

            if (EventData.Callstacks != null && scroll.DrawCallstacks != 0)
            {
                int startIndex = Data.Utils.BinarySearchClosestIndex(EventData.Callstacks, tick.Start);

                for (int i = startIndex; (i <= startIndex + 1) && (i < EventData.Callstacks.Count) && (i != -1); ++i)
                {
                    double pixelPos = scroll.TimeToPixel(EventData.Callstacks[i]);
                    if (Math.Abs(pixelPos - point.X) < CallstackMarkerRadius * 1.2 && (EventData.Callstacks[i].Reason & scroll.DrawCallstacks) != 0)
                    {
                        dataContext.Add(EventData.Callstacks[i]);
                        break;
                    }
                }
            }
        }