//******************************************************************************************************//  PerformanceStatistics.cs - Gbtc////  Copyright © 2012, Grid Protection Alliance.  All Rights Reserved.////  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See//  the NOTICE file distributed with this work for additional information regarding copyright ownership.//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may//  not use this file except in compliance with the License. You may obtain a copy of the License at:////      http://www.opensource.org/licenses/MIT////  Unless agreed to in writing, the subject software distributed under the License is distributed on an//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the//  License for the specific language governing permissions and limitations.////  Code Modification History://  ----------------------------------------------------------------------------------------------------//  02/24/2012 - Stephen C. Wills//       Generated original version of source code.//  12/20/2012 - Starlynn Danyelle Gilliam//       Modified Header.////****************************************************************************************************** using System;using GSF.Diagnostics;using GSF.IO;using static GSF.Common; // ReSharper disable UnusedMember.Local// ReSharper disable UnusedParameter.Localnamespace GSF.TimeSeries.Statistics{    internal static class PerformanceStatistics    {        private static readonly double s_totalPhysicalMemory;         // Run-time log used to calculate system run-time        internal static RunTimeLog SystemRunTimeLog;         static PerformanceStatistics()        {            try            {                // Total physical memory not expected to change over process lifetime                s_totalPhysicalMemory = GetTotalPhysicalMemory();            }            catch (Exception ex)            {                Logger.SwallowException(ex);                s_totalPhysicalMemory = double.NaN;            }        }         #region [ CPU Usage ]         private static double GetSystemStatistic_CPUUsage(object source, string _) =>             source is PerformanceMonitor perfMon ? perfMon.CPUUsage?.LastValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AverageCPUUsage(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.CPUUsage?.AverageValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_SystemCPUUsage(object source, string _) =>            SystemPerformanceMonitor.Default?.CPUUsage?.LastValue ?? double.NaN;         private static double GetSystemStatistic_AverageSystemCPUUsage(object source, string _) =>            SystemPerformanceMonitor.Default?.CPUUsage?.AverageValue ?? double.NaN;         #endregion         #region [ Memory Usage ]         private static double GetSystemStatistic_MemoryUsage(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.MemoryUsage?.LastValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AverageMemoryUsage(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.MemoryUsage?.AverageValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AvailableSystemMemory(object source, string _) =>             SystemPerformanceMonitor.Default?.AvailableMemory?.LastValue ?? double.NaN;         private static double GetSystemStatistic_AverageAvailableSystemMemory(object source, string _) =>            SystemPerformanceMonitor.Default?.AvailableMemory?.AverageValue ?? double.NaN;         private static double GetSystemStatistic_SystemMemoryUsage(object source, string _)        {            try            {                return (s_totalPhysicalMemory - GetAvailablePhysicalMemory()) / s_totalPhysicalMemory * 100.0D;            }            catch (Exception ex)            {                Logger.SwallowException(ex);                return double.NaN;            }        }         #endregion         #region [ Thread Count ]         private static double GetSystemStatistic_ThreadCount(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.ThreadCount?.LastValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AverageThreadCount(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.ThreadCount?.AverageValue ?? double.NaN : double.NaN;         #endregion         #region [ Threading Contention Rate ]         private static double GetSystemStatistic_ThreadingContentionRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.ThreadingContentionRate?.LastValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AverageThreadingContentionRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.ThreadingContentionRate?.AverageValue ?? double.NaN : double.NaN;         #endregion         #region [ IO Usage ]         private static double GetSystemStatistic_IOUsage(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IOUsage?.LastValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_AverageIOUsage(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IOUsage?.AverageValue ?? double.NaN : double.NaN;         private static double GetSystemStatistic_PrimaryDiskUsage(object source, string _)        {            try            {                string primaryDrive = IsPosixEnvironment ? "/" : "C:\\";                return FilePath.GetAvailableFreeSpace(primaryDrive, out long freeSpace, out long totalSize) ? (totalSize - freeSpace) / (double)totalSize * 100.0D : double.NaN;            }            catch (Exception ex)            {                Logger.SwallowException(ex);                return double.NaN;            }        }         #endregion         #region [ IP Data Send Rate ]         private static double GetSystemStatistic_IPDataSendRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IPDataSendRate?.LastValue ?? double.NaN : double.NaN;         // Historical name - function may be used by older database configurations        private static double GetSystemStatistic_DatagramSendRate(object source, string arguments) =>            GetSystemStatistic_IPDataSendRate(source, arguments);         private static double GetSystemStatistic_AverageIPDataSendRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IPDataSendRate?.AverageValue ?? double.NaN : double.NaN;         // Historical name - function may be used by older database configurations        private static double GetSystemStatistic_AverageDatagramSendRate(object source, string arguments) =>             GetSystemStatistic_AverageIPDataSendRate(source, arguments);         #endregion         #region [ IP Data Receive Rate ]         private static double GetSystemStatistic_IPDataReceiveRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IPDataReceiveRate?.LastValue ?? double.NaN : double.NaN;         // Historical name - function may be used by older database configurations        private static double GetSystemStatistic_DatagramReceiveRate(object source, string arguments) =>            GetSystemStatistic_IPDataReceiveRate(source, arguments);         private static double GetSystemStatistic_AverageIPDataReceiveRate(object source, string _) =>            source is PerformanceMonitor perfMon ? perfMon.IPDataReceiveRate?.AverageValue ?? double.NaN : double.NaN;         // Historical name - function may be used by older database configurations        private static double GetSystemStatistic_AverageDatagramReceiveRate(object source, string arguments) =>            GetSystemStatistic_AverageIPDataReceiveRate(source, arguments);         #endregion         #region [ System Times ]         private static double GetSystemStatistic_UpTime(object source, string _) =>             !(SystemRunTimeLog?.IsDisposed ?? true) ? SystemRunTimeLog.UpTime.TotalSeconds : double.NaN;         private static double GetSystemStatistic_AverageDeviceTime(object source, string _) =>            (double)new UnixTimeTag(GlobalDeviceStatistics.AverageTime).Value;         private static double GetSystemStatistic_MinimumDeviceTime(object source, string _) =>            (double)new UnixTimeTag(GlobalDeviceStatistics.MinimumTime).Value;         private static double GetSystemStatistic_MaximumDeviceTime(object source, string _) =>            (double)new UnixTimeTag(GlobalDeviceStatistics.MaximumTime).Value;         private static double GetSystemStatistic_SystemTimeDeviationFromAverage(object source, string _)        {            long deviation = GlobalDeviceStatistics.GetSystemTimeDeviationFromAverage();            return deviation > long.MinValue ? new Ticks(deviation).ToSeconds() : double.NaN;        }         #endregion    }}