Functions/GenXdev.Hardware/Get-NumberOfCpuCores.cs
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using System.Management; using System.Management.Automation; namespace GenXdev.Hardware { [System.ComponentModel.Description(@" .SYNOPSIS Calculates and returns the total number of logical CPU cores in the system. .DESCRIPTION Queries the system hardware through Windows Management Instrumentation (WMI) to determine the total number of logical CPU cores. The cmdlet accounts for hyperthreading by multiplying the physical core count by 2. This information is useful for optimizing parallel processing tasks and understanding system capabilities. .LICENSE Copyright (C) 2026 René Vaessen / GenXdev This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. .EXAMPLE ```powershell $cores = Get-NumberOfCpuCores Write-Host ""System has $cores logical CPU cores available"" ``` Retrieves the total number of logical CPU cores available on the system. ")] [Cmdlet(VerbsCommon.Get, "NumberOfCpuCores")] [OutputType(typeof(int))] public class GetNumberOfCpuCoresCommand : PSGenXdevCmdlet { /// <summary> /// Begin processing - initialization logic /// </summary> protected override void BeginProcessing() { // Initialize counter for tracking total physical cores across all CPUs WriteVerbose("Starting CPU core count calculation"); } /// <summary> /// Process record - main cmdlet logic /// </summary> protected override void ProcessRecord() { // Query all physical processors through WMI var searcher = new ManagementObjectSearcher("SELECT NumberOfCores FROM Win32_Processor"); var processors = searcher.Get(); WriteVerbose($"Found {processors.Count} physical processors"); // Initialize counter for tracking total physical cores across all CPUs int totalPhysicalCores = 0; // Sum up the number of cores from each physical processor foreach (ManagementObject processor in processors) { int cores = (int)(uint)processor["NumberOfCores"]; totalPhysicalCores += cores; WriteVerbose($"Added {cores} cores from processor"); } // Calculate logical cores (assuming hyperthreading doubles the count) int logicalCores = totalPhysicalCores * 2; WriteVerbose($"Calculated {logicalCores} total logical cores"); // Output the result WriteObject(logicalCores); } /// <summary> /// End processing - cleanup logic /// </summary> protected override void EndProcessing() { // No cleanup needed } } } |