private static void OutputProfilerFrame(ProfilerFrame source,
Dictionary <string, int> exportedFrameNameToExportedFrameId,
Dictionary <string, IList <ProfileEvent> > profileEventsPerThread)
{
int frameId = 0;
foreach (var sourceThreadMethod in source.threadMethods)
{
var list = new List <ProfileEvent>(sourceThreadMethod.Item2.Count);
foreach (ProfilerMethod method in sourceThreadMethod.Item2)
{
if (!exportedFrameNameToExportedFrameId.TryGetValue(method.methodName, out int value))
{
value = frameId;
frameId++;
exportedFrameNameToExportedFrameId.Add(method.methodName, value);
}
list.Add(new ProfileEvent(ProfileEventType.Open, value, method.startTime, method.depth));
list.Add(new ProfileEvent(ProfileEventType.Close, value, method.endTime, method.depth));
}
profileEventsPerThread[sourceThreadMethod.Item1] = OrderForExport(list).ToList();
}
}
private static IList <TraceEvent> GetEvents(ProfilerFrame frame)
{
var events = new List <TraceEvent>();
int processId = Process.GetCurrentProcess().Id;
int threadId = 0;
string categories = "PERF";
foreach (var frameThreadMethod in frame.threadMethods.OrderByDescending(x => x.Item1))
{
foreach (ProfilerMethod profilerMethod in frameThreadMethod.Item2)
{
//Chrome tracing shows methods with same startTime as parallel, so we add depth to the startTime
long startTime = (long)profilerMethod.startTime + profilerMethod.depth;
long endTime = (long)profilerMethod.endTime < startTime
? startTime
: (long)profilerMethod.endTime;
events.Add(new TraceEvent()
{
name = profilerMethod.methodName,
cat = categories,
pid = processId,
ph = EventType.B,
tid = frameThreadMethod.Item1,
ts = startTime
});
events.Add(new TraceEvent()
{
name = profilerMethod.methodName,
cat = categories,
pid = processId,
ph = EventType.E,
tid = frameThreadMethod.Item1,
ts = endTime
});
}
threadId++;
}
if (frame.markers != null)
{
foreach (ProfilerMarker marker in frame.markers)
{
events.Add(new TraceEvent()
{
name = marker.markName,
cat = "EVENTS",
pid = processId,
ph = EventType.I,
tid = "Events",
ts = (long)(marker.time)
});
}
}
return(events);
}
private static void Export(ProfilerFrame source, TextWriter writer, string name)
{
var methodNameToId = new Dictionary <string, int>();
var eventsPerThread = new Dictionary <string, IList <ProfileEvent> >();
OutputProfilerFrame(source, methodNameToId, eventsPerThread);
var orderedFrameNames = methodNameToId.OrderBy(pair => pair.Value).Select(pair => pair.Key).ToArray();
WriteToFile(eventsPerThread, orderedFrameNames, writer, name);
}
private static void CollectFrame()
{
ProfilerFrame frame = new ProfilerFrame();
frame.frameNumber = currentFrame;
frame.frameLength = (stopwatch.ElapsedTicks / (double)Stopwatch.Frequency) * 1000000.0;
frame.threadMethods = PooledList <(string, PooledList <ProfilerMethod>)> .Create();
foreach (var dataList in collectedMethods.Values)
{
if (dataList.Count == 0)
{
continue;
}
if (profilingThreads.TryGetValue(dataList[0].threadId, out string threadName))
{
var tuple = frame.threadMethods.SingleOrDefault(x => x.Item1 == threadName);
PooledList <ProfilerMethod> outList = null;
if (tuple.Item1 == null)
{
outList = PooledList <ProfilerMethod> .Create();
frame.threadMethods.Add((threadName, outList));
}
else
{
outList = tuple.Item2;
}
outList.AddRange(dataList);
}
}
foreach (var dataList in collectedMarkers.Values)
{
if (frame.markers == null)
{
frame.markers = PooledList <ProfilerMarker> .Create();
}
frame.markers.AddRange(dataList);
}
if (collectedFrames.IsFull)
{
collectedFrames.Front().Dispose();
}
collectedFrames.PushBack(frame);
}
public static void WriteToFile(ProfilerFrame source, string filePath)
{
var file = new FileInfo(filePath);
var dir = file.Directory;
if (!dir.Exists)
{
dir.Create();
}
if (file.Exists)
{
file.Delete();
}
using var fs = new FileStream(filePath, FileMode.Create, FileAccess.ReadWrite);
using var writeStream = new StreamWriter(fs, Encoding.UTF8);
Export(source, writeStream, Path.GetFileNameWithoutExtension(filePath));
}
public static void WriteToFile(string filename, ProfilingFormat format, FrameSelection frameSelection = FrameSelection.Median)
{
if (!ProfilingEnabled)
{
throw new InvalidOperationException("Cannot write profile to file when profiling is not enabled.");
}
ProfilerFrame frame = default;
if (collectedFrames.IsEmpty)
{
return;
}
bool needsDispose = false;
switch (frameSelection)
{
case FrameSelection.Median:
var ordered = collectedFrames.OrderBy(x => x.frameLength).ToArray();
frame = ordered[(int)Math.Floor(ordered.Length / 2.0)];
break;
case FrameSelection.Longest:
frame = collectedFrames.MaxBy(x => x.frameLength);
break;
case FrameSelection.Shortest:
frame = collectedFrames.MinBy(x => x.frameLength);
break;
case FrameSelection.Latest:
frame = collectedFrames.Back();
break;
case FrameSelection.Percentile95:
ordered = collectedFrames.OrderBy(x => x.frameLength).ToArray();
int index = ordered.Length - (int)(ordered.Length * 0.05f);
if (index >= ordered.Length)
{
index = ordered.Length - 1;
}
frame = ordered[index];
break;
case FrameSelection.All:
frame = new ProfilerFrame();
frame.frameNumber = collectedFrames.Min(x => x.frameNumber);
frame.frameLength = collectedFrames.Sum(x => x.frameLength);
frame.markers = PooledList <ProfilerMarker> .Create();
double elapsedTime = 0;
foreach (var collectedFrame in collectedFrames)
{
if (collectedFrame.markers != null)
{
frame.markers.AddRange(collectedFrame.markers.Select(x =>
new ProfilerMarker(x.markName, x.time + elapsedTime)));
}
elapsedTime += collectedFrame.frameLength;
}
frame.threadMethods = PooledList <(string, PooledList <ProfilerMethod>)> .Create();
elapsedTime = 0;
foreach (var collectedFrame in collectedFrames)
{
foreach (var collectedFrameThreadMethod in collectedFrame.threadMethods)
{
var tuple = frame.threadMethods.SingleOrDefault(x => x.Item1 == collectedFrameThreadMethod.Item1);
PooledList <ProfilerMethod> outList = null;
if (tuple.Item1 == null)
{
outList = PooledList <ProfilerMethod> .Create();
frame.threadMethods.Add((collectedFrameThreadMethod.Item1, outList));
}
else
{
outList = tuple.Item2;
}
outList.AddRange(collectedFrameThreadMethod.Item2.Select(x => new ProfilerMethod(
x.methodName, x.depth, x.startTime + elapsedTime, x.endTime + elapsedTime, x.threadId)));
}
elapsedTime += collectedFrame.frameLength;
}
needsDispose = true;
break;
default:
throw new ArgumentOutOfRangeException(nameof(frameSelection), frameSelection, null);
}
switch (format)
{
case ProfilingFormat.SpeedScope:
SpeedScopeWriter.WriteToFile(frame, filename);
break;
case ProfilingFormat.ChromeTracing:
ChromeTracingWriter.WriteToFile(frame, filename);
break;
default:
throw new ArgumentOutOfRangeException(nameof(format), format, null);
}
if (needsDispose)
{
frame.Dispose();
}
}
private static void Export(ProfilerFrame source, TextWriter writer, string name)
{
var events = GetEvents(source);
WriteToFile(events, writer, name);
}