public static IEnumerable <SampleWithTrace> ParseFromFile(string filename)
{
if (!File.Exists(filename))
{
throw new ArgumentException($"Cannot find filename: ${filename}.");
}
SampleWithTrace current = null;
List <PerformanceSample> currentStack = new List <PerformanceSample>();
uint index = 0;
using (var reader = new StreamReader(filename)) {
using (CsvReader csvReader = new CsvReader(reader)) {
while (csvReader.Read())
{
var row = csvReader.GetRecord <dynamic>();
var dict = row as IDictionary <string, object>;
if (dict["Function"] == null || dict["Function"].ToString() == string.Empty)
{
if (dict["Function Stack"] == null || dict["Function Stack"].ToString() == string.Empty)
{
current.AddStack(currentStack);
currentStack = new List <PerformanceSample>();
}
else
{
PerformanceSample s = new PerformanceSample(dict["Function Stack"].ToString(),
dict["CPU Time"].ToString(),
dict["Module"].ToString(),
dict["Function (Full)"].ToString(),
dict["Source File"].ToString(),
dict["Start Address"].ToString());
currentStack.Add(s);
}
}
else
{
if (current != null)
{
yield return(current);
}
PerformanceSample s = new PerformanceSample(dict["Function"].ToString(),
dict["CPU Time"].ToString(),
dict["Module"].ToString(),
dict["Function (Full)"].ToString(),
dict["Source File"].ToString(),
dict["Start Address"].ToString()
);
current = new SampleWithTrace(s);
}
index += 1;
}
}
}
if (current != null)
{
yield return(current);
}
}
public static IEnumerable <SampleWithTrace> ParseFromStream(this IEnumerable <string> seq)
{
Regex startsWithComma = new Regex("^(,+)(.*)$");
SampleWithTrace current = null;
List <PerformanceSample> currentStack = null;
bool atEnd = false;
foreach (var l in seq)
{
Match m = startsWithComma.Match(l);
if (!m.Success)
{
if (atEnd == true)
{
if (currentStack != null)
{
current.AddStack(currentStack);
currentStack = null;
}
yield return(current);
}
atEnd = false;
// should assert record is comma-separated, seven-field, second one empty
var fields = l.Split(',');
try
{
/* Function, CPUTime, Module, FunctionFull, SourceFile, StartAddress */
current = new SampleWithTrace(new PerformanceSample(fields[0], fields[2], fields[3], fields[4], fields[5], fields[6]));
}
catch (Exception ex)
{
// Discard record
Console.WriteLine($"Caught exception {ex.Message}");
}
}
else
{
// assert m.Groups.Count is 3
if (m.Groups[1].Length == 1)
{
if (atEnd == true || currentStack == null)
{
if (currentStack != null)
{
current.AddStack(currentStack);
}
currentStack = new List <PerformanceSample>();
}
atEnd = false;
var fields = m.Groups[2].Value.Split(',');
try
{
/* Function, CPUTime, Module, FunctionFull, SourceFile, StartAddress */
currentStack.Add(new PerformanceSample(fields[0], fields[1], fields[2], fields[3], fields[5], fields[5]));
}
catch (Exception ex)
{
// Discard record... happens on de-mangled C++ multi-templatized functions on Linux
Console.WriteLine($"Caught exception {ex.Message}");
}
}
else
{
// verify that the only other allowed value for Groups[1].Length is 6?
atEnd = true;
}
}
}
if (current != null)
{
if (currentStack != null)
{
current.AddStack(currentStack);
}
yield return(current);
}
}
