public static Dictionary <string, string> Parse(string dataSource) { SortedList <string, SortedSet <string> > allCounters = PdhUtils.Parse(dataSource); var generated = new Dictionary <string, string>(); foreach (string counterSet in allCounters.Keys) { string setName = NameUtils.CreateIdentifier(counterSet); var sb = new StringBuilder("// This code was generated by EtwEventTypeGen"); sb.AppendLine(setName); sb.Append("namespace Tx.Windows.Counters."); sb.AppendLine(setName); sb.AppendLine(); sb.AppendLine("{"); foreach (string counter in allCounters[counterSet]) { EmitCounter(counterSet, counter, ref sb); } sb.AppendLine("}"); generated.Add(setName, sb.ToString()); } return(generated); }
public PerfMetadata(string logFileName) { List <string> machines = PdhUtils.GetMachineList(logFileName); var machineInfos = new List <MachineInfo>(); foreach (string m in machines) { var objects = PdhUtils.GetObjectList(logFileName, m); var objectInfos = new List <ObjectInfo>(); foreach (string o in objects) { var counters = new List <string>(); var instances = new List <string>(); PdhUtils.GetCounterAndInstanceList(logFileName, m, o, out counters, out instances); ObjectInfo info = new ObjectInfo(o, counters, instances); objectInfos.Add(info); } machineInfos.Add(new MachineInfo(m, objectInfos)); } _machines = machineInfos.AsReadOnly(); }
public void OnTimer(object state) { try { if (_firstMove) { // some counters need two samples to calculate their value // so skip a sample to make sure there are no further complications PdhNativeMethods.PdhCollectQueryData(_query); _firstMove = false; return; } long time; PdhStatus status = PdhNativeMethods.PdhCollectQueryDataWithTime(_query, out time); PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); DateTime timestamp = TimeUtil.FromFileTime(time); foreach (PerfCounterInfo counterInfo in _counters) { ProduceCounterSamples(counterInfo, timestamp); } } catch (Exception ex) { _observer.OnError(ex); } }
internal void ProduceCounterSamples(PerfCounterInfo counterInfo, DateTime timestamp) { uint bufferSize = 0; uint bufferCount; PdhStatus status = PdhNativeMethods.PdhGetFormattedCounterArray( counterInfo.Handle, PdhFormat.PDH_FMT_DOUBLE, ref bufferSize, out bufferCount, IntPtr.Zero); PdhUtils.CheckStatus(status, PdhStatus.PDH_MORE_DATA); var buffer = new byte[bufferSize]; unsafe { fixed(byte *pb = buffer) { status = PdhNativeMethods.PdhGetFormattedCounterArray( counterInfo.Handle, PdhFormat.PDH_FMT_DOUBLE, ref bufferSize, out bufferCount, (IntPtr)pb); if (status == PdhStatus.PDH_INVALID_DATA || status == PdhStatus.PDH_NO_DATA || status == PdhStatus.PDH_CALC_NEGATIVE_VALUE || status == PdhStatus.PDH_CALC_NEGATIVE_DENOMINATOR || status == PdhStatus.PDH_CALC_NEGATIVE_TIMEBASE) { var sample = new PerformanceSample(counterInfo, counterInfo.Instance, timestamp, double.NaN); _observer.OnNext(sample); return; } PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); var items = (PDH_FMT_COUNTERVALUE_ITEM *)pb; for (int i = 0; i < bufferCount; i++) { PDH_FMT_COUNTERVALUE_ITEM *item = items + i; var instanceName = new string((char *)item->szName); var sample = new PerformanceSample(counterInfo, instanceName, timestamp, item->FmtValue.doubleValue); _observer.OnNext(sample); } } } }
public void Read() { try { if (_firstMove) { // some counters need two samples to calculate their value // so skip a sample to make sure there are no further complications PdhNativeMethods.PdhCollectQueryData(_query); _firstMove = false; } while (true) { long time; PdhStatus status = PdhNativeMethods.PdhCollectQueryDataWithTime(_query, out time); if (status == PdhStatus.PDH_NO_MORE_DATA) { break; } if (status == PdhStatus.PDH_NO_DATA) { if (_binaryLog) { continue; } else { break; } } PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); //DateTime timestamp = TimeUtil.FromFileTime(time); DateTime timestamp = DateTime.FromFileTimeUtc(time); foreach (PerfCounterInfo counterInfo in _counters) { ProduceCounterSamples(counterInfo, timestamp); } } _observer.OnCompleted(); } catch (Exception ex) { _observer.OnError(ex); } }
public PerfCounterRealTimeProbe(IObserver <PerformanceSample> observer, TimeSpan samplingRate, params string[] counterPaths) : base(observer) { PdhStatus status = PdhNativeMethods.PdhOpenQuery(null, IntPtr.Zero, out _query); PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); for (int i = 0; i < counterPaths.Length; i++) { AddCounter(counterPaths[i], i); } _timer = new Timer(OnTimer, null, TimeSpan.Zero, samplingRate); }
protected void AddCounter(string counterPath, int index) { PdhCounterHandle counter; PdhStatus status = PdhNativeMethods.PdhAddCounter(_query, counterPath, IntPtr.Zero, out counter); if (status == PdhStatus.PDH_ENTRY_NOT_IN_LOG_FILE || status == PdhStatus.PDH_CSTATUS_NO_INSTANCE) { return; } PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); var counterInfo = new PerfCounterInfo(counterPath, counter, index); _counters.Add(counterInfo); }
public PerfCounterFileReader(IObserver <PerformanceSample> observer, string file) : base(observer) { string extension = Path.GetExtension(file); if (extension != null) { _binaryLog = extension.ToLowerInvariant() == ".blg"; } string[] counterPaths = PdhUtils.GetCounterPaths(file); PdhStatus status = PdhNativeMethods.PdhOpenQuery(file, IntPtr.Zero, out _query); PdhUtils.CheckStatus(status, PdhStatus.PDH_CSTATUS_VALID_DATA); for (int i = 0; i < counterPaths.Length; i++) { AddCounter(counterPaths[i], i); } Read(); }