private KernelSymbol FindSymbolForIp(ulong ip, SortedList <ulong, KernelSymbol> kernelSymbols)
{
KernelSymbol kernelSymbol;
if (cachedIpSymList.TryGetValue(ip, out kernelSymbol))
{
return(kernelSymbol);
}
else
{
if (maxKernelSymbol == null)
{
maxKernelSymbol = kernelSymbols.Values.LastOrDefault();
}
var sym = kernelSymbols.Where(f => (long)f.Key <= (long)ip).LastOrDefault(); // Redo implementation later for perf
if (sym.Value != null)
{
if (sym.Value != maxKernelSymbol)
{
cachedIpSymList.TryAdd(ip, sym.Value);
}
else
{
cachedIpSymList.TryAdd(ip, null);
}
return(sym.Value);
}
return(null);
}
}
public override DataProcessingResult CookDataElement(PerfEvent data, PerfContext context, CancellationToken cancellationToken)
{
lock (symProcessLock)
{
if (!attemptedProcessSymbols)
{
try
{
// TODO: This is hard-coded for now. We don't seem to have a good way to know/infer the trace path or choose this in the UI. CTF SDK change needed?
var kallsymsFile = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "kallsyms");
if (File.Exists(kallsymsFile))
{
using (StreamReader sr = new StreamReader(kallsymsFile))
{
string line;
while ((line = sr.ReadLine()) != null)
{
var ks = new KernelSymbol(line);
if (KernelSymbols.ContainsKey(ks.Address))
{
Console.Out.WriteLine($"Unable to add {line}. There is already an entry this address");
}
else
{
KernelSymbols.Add(ks.Address, ks);
}
}
}
}
}
catch (Exception e)
{
Console.WriteLine($"Exception processing symbols: {e.Message}");
}
finally
{
attemptedProcessSymbols = true;
}
}
}
try
{
if (data.Name == "cpu-clock")
{
CpuClockEvents.Add(new CpuClockEvent(data, context, KernelSymbols));
return(DataProcessingResult.Processed);
}
else
{
return(DataProcessingResult.Ignored);
}
}
catch (CtfPlaybackException e)
{
Console.Error.WriteLine(e);
return(DataProcessingResult.CorruptData);
}
}
