static void Main()
{
var knownPids = new HashSet <uint>();
_timer = new Timer(_ => ProcessCallstacks(), null, 3000, 3000);
var symbols = new SortedDictionary <ulong, string>();
using var input = Console.OpenStandardInput();
var fileHeader = input.Read <PerfPipeFileHeader>();
if (fileHeader.Magic != MagicNumber)
{
Console.WriteLine($"Magic number mismatch. Expected {MagicNumber:x2}, found {fileHeader.Magic:x2}");
return;
}
bool endOfFile = false;
PerfRecordIndexes?indexes = null;
while (!endOfFile)
{
var header = input.Read <PerfEventHeader>();
switch (header.Type)
{
case PerfEventType.EndOfFile:
endOfFile = true;
break;
case PerfEventType.RecordMmap:
{
var perfRecordMmap = new PerfRecordMmap(input, header);
var filename = ReadString(perfRecordMmap.Filename);
symbols.Add(perfRecordMmap.Addr, filename);
ReadSymbols(filename, perfRecordMmap.Addr, perfRecordMmap.Pgoff, perfRecordMmap.Len, symbols);
if (knownPids.Add(perfRecordMmap.Pid))
{
ReadPerfMap(perfRecordMmap.Pid, symbols);
}
break;
}
case PerfEventType.LostEvents:
Console.WriteLine("Lost events");
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordComm:
//var perfRecordComm = new PerfRecordComm(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordExit:
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordFork:
//var perfRecordFork = new PerfRecordFork(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordSample:
if (indexes == null)
{
break;
}
var sample = new PerfRecordSample(input, header, indexes);
var symbol = "UNKNOWN";
foreach (var kvp in symbols)
{
if (kvp.Key < sample.Addr)
{
symbol = kvp.Value;
}
else
{
break;
}
}
_callstacks.Enqueue(symbol);
break;
case PerfEventType.RecordMmap2:
{
var perfRecordMmap2 = new PerfRecordMmap2(input, header);
var filename = ReadString(perfRecordMmap2.filename);
symbols.Add(perfRecordMmap2.Addr, filename);
ReadSymbols(filename, perfRecordMmap2.Addr, perfRecordMmap2.Pgoff, perfRecordMmap2.Len, symbols);
if (knownPids.Add(perfRecordMmap2.Pid))
{
ReadPerfMap(perfRecordMmap2.Pid, symbols);
}
break;
}
case PerfEventType.RecordKSymbol:
//var perfRecordKSymbol = new PerfRecordKSymbol(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordBpfEvent:
//var perfRecordBpfEvent = new PerfRecordBpfEvent(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordHeaderAttr:
var perfRecordHeaderAttr = new PerfRecordHeaderAttr(input, header);
indexes = new PerfRecordIndexes(perfRecordHeaderAttr.Attr.SampleType);
break;
case PerfEventType.RecordFinishedRound:
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordThreadMap:
//var perfRecordThreadMap = new PerfRecordThreadMap(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordCpuMap:
//var perfRecordCpuMap = new PerfRecordCpuMap(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordEventUpdate:
//var perfRecordEventUpdate = new PerfRecordEventUpdate(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordTimeConv:
//var perfRecordTimeConv = new PerfRecordTimeConv(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordHeaderFeature:
//var perfRecordHeaderFeature = new PerfRecordHeaderFeature(input, header);
input.Skip(header.GetRemainingBytes());
break;
default:
throw new NotSupportedException("Header not supported: " + header.Type);
}
}
}
static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("Missing pid");
return;
}
if (!int.TryParse(args[0], out var pid))
{
Console.WriteLine("Invalid pid");
return;
}
var map = new Dictionary <ulong, string>();
var symbols = new SortedDictionary <ulong, string>();
var perfMapFile = $"/tmp/perf-{pid}.map";
if (File.Exists(perfMapFile))
{
foreach (var line in File.ReadLines(perfMapFile))
{
var values = line.Split(' ', 3);
map.Add(Convert.ToUInt64(values.First(), 16), values.Last());
symbols.Add(Convert.ToUInt64(values.First(), 16), values.Last());
}
}
Console.WriteLine($"Loaded {map.Count} symbols from {perfMapFile}");
using var input = Console.OpenStandardInput();
var fileHeader = input.Read <PerfPipeFileHeader>();
if (fileHeader.Magic != MagicNumber)
{
Console.WriteLine($"Magic number mismatch. Expected {MagicNumber:x2}, found {fileHeader.Magic:x2}");
return;
}
bool endOfFile = false;
PerfRecordIndexes indexes = null;
while (!endOfFile)
{
var header = input.Read <PerfEventHeader>();
switch (header.Type)
{
case PerfEventType.EndOfFile:
endOfFile = true;
break;
case PerfEventType.RecordMmap:
var perfRecordMmap = new PerfRecordMmap(input, header);
if (perfRecordMmap.Pid == pid)
{
var filename = ReadString(perfRecordMmap.Filename);
symbols.Add(perfRecordMmap.Addr, filename);
ReadSymbols(filename, perfRecordMmap.Addr, perfRecordMmap.Pgoff, perfRecordMmap.Len, symbols);
}
break;
case PerfEventType.LostEvents:
Console.WriteLine("Lost events");
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordComm:
//var perfRecordComm = new PerfRecordComm(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordExit:
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordFork:
//var perfRecordFork = new PerfRecordFork(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordSample:
var sample = new PerfRecordSample(input, header, indexes);
if (sample.Pid == pid)
{
Console.WriteLine("Sample:");
foreach (var frame in sample.Callchain)
{
if (!map.TryGetValue(frame, out var symbol))
{
symbol = "UNKNOWN";
foreach (var kvp in symbols)
{
if (kvp.Key < frame)
{
symbol = kvp.Value;
}
else
{
break;
}
}
}
Console.WriteLine($"{frame:x2} {symbol}");
}
}
break;
case PerfEventType.RecordMmap2:
var perfRecordMmap2 = new PerfRecordMmap2(input, header);
if (perfRecordMmap2.Pid == pid)
{
var filename = ReadString(perfRecordMmap2.filename);
symbols.Add(perfRecordMmap2.Addr, filename);
ReadSymbols(filename, perfRecordMmap2.Addr, perfRecordMmap2.Pgoff, perfRecordMmap2.Len, symbols);
}
break;
case PerfEventType.RecordKSymbol:
//var perfRecordKSymbol = new PerfRecordKSymbol(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordBpfEvent:
//var perfRecordBpfEvent = new PerfRecordBpfEvent(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordHeaderAttr:
var perfRecordHeaderAttr = new PerfRecordHeaderAttr(input, header);
foreach (ulong value in Enum.GetValues(typeof(PerfEventSampleFormat)))
{
if (((ulong)perfRecordHeaderAttr.Attr.SampleType & value) == value)
{
Console.WriteLine((PerfEventSampleFormat)value);
}
}
indexes = new PerfRecordIndexes(perfRecordHeaderAttr.Attr.SampleType);
break;
case PerfEventType.RecordFinishedRound:
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordThreadMap:
//var perfRecordThreadMap = new PerfRecordThreadMap(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordCpuMap:
//var perfRecordCpuMap = new PerfRecordCpuMap(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordEventUpdate:
//var perfRecordEventUpdate = new PerfRecordEventUpdate(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordTimeConv:
//var perfRecordTimeConv = new PerfRecordTimeConv(input, header);
input.Skip(header.GetRemainingBytes());
break;
case PerfEventType.RecordHeaderFeature:
//var perfRecordHeaderFeature = new PerfRecordHeaderFeature(input, header);
input.Skip(header.GetRemainingBytes());
break;
default:
throw new NotSupportedException("Header not supported: " + header.Type);
}
}
}
