//******************************************************************************************************//  SystemPerformanceMonitor.cs - Gbtc////  Copyright © 2021, 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://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://  ----------------------------------------------------------------------------------------------------//  04/29/2021 - J. Ritchie Carroll//       Generated original version of source code.////****************************************************************************************************** namespace GSF.Diagnostics{    /// <summary>    /// Represents a system performance monitor for system level performance statistics, e.g.,    /// CPU utilization and available memory.    /// </summary>    public class SystemPerformanceMonitor : PerformanceMonitorBase    {        #region [ Constructors ]         /// <summary>        /// Creates a new <see cref="SystemPerformanceMonitor"/>.        /// </summary>        /// <param name="samplingInterval">        /// Interval, in milliseconds, at which the <see cref="PerformanceMonitorBase.Counters"/>        /// are to be sampled.        /// </param>        /// <remarks>        /// It is recommended to use the <see cref="Default"/> instance of this class        /// instead of creating a new instance where applicable.        /// </remarks>        public SystemPerformanceMonitor(double samplingInterval = DefaultSamplingInterval)             : base(samplingInterval)        {            // This counter matches task manager for process utilization:            AddCounter("Processor Information", "% Processor Utility", "_Total", "CPU Utilization", "Average %", 1.0F, true, sampleFilter: value => value <= 0.0D);            AddCounter("Memory", "Available MBytes", "", "Available Memory", "GB", 1024.0F);        }         #endregion         #region [ Properties ]         /// <summary>        /// Gets the <see cref="PerformanceCounter"/> that monitors the processor utilization of the system.        /// </summary>        /// <remarks>This <see cref="PerformanceCounter"/> is added by default.</remarks>        public PerformanceCounter CPUUsage =>            FindCounter("% Processor Utility");         /// <summary>        /// Gets the <see cref="PerformanceCounter"/> that monitors the remaining available memory of the system in GB.        /// </summary>        /// <remarks>This <see cref="PerformanceCounter"/> is added by default.</remarks>        public PerformanceCounter AvailableMemory =>            FindCounter("Available MBytes");         #endregion         #region [ Static ]         // Static Fields        private static SystemPerformanceMonitor s_systemPerformanceMonitor;         // Static Properties         /// <summary>        /// Gets default reference of <see cref="SystemPerformanceMonitor"/>.        /// </summary>        public static SystemPerformanceMonitor Default =>            s_systemPerformanceMonitor ??= new SystemPerformanceMonitor();         #endregion    }}