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NumCPULib4Pascal

Get the number of CPUs in Pascal

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README

NumCPULib4Pascal logo

NumCPULib4Pascal

pascal
CPU count detection for Object Pascal

NumCPULib4Pascal is a library for detecting the number of logical and physical CPUs on the current machine in Object Pascal, compatible with both Delphi and FreePascal across multiple operating systems, released under the permissive MIT License.

Table of Contents

Features

  • Logical CPU count -- detect the number of logical processors (hardware threads)
  • Physical CPU count -- detect the number of physical cores
  • Cross-platform -- Windows, Linux, macOS, Solaris, and BSD variants
  • Cross-compiler -- Delphi and FreePascal

Getting Started

Prerequisites

Compiler Minimum Version
Delphi 2010 or later
FreePascal 3.0.0 or later

Installation

Delphi

  1. Open package:
    • NumCPULib/src/Packages/Delphi/NumCPULib4PascalPackage.dpk
  2. Build and install the package in the IDE.
  3. Add NumCPULib/src subfolders to your project search path if needed.

FreePascal / Lazarus

  1. Open package:
    • NumCPULib/src/Packages/FPC/NumCPULib4PascalPackage.lpk
  2. Build/install package in Lazarus, or add NumCPULib/src paths to your FPC project.

Quick Examples

Get CPU Counts

pascal
uses
  NumCPULib;

var
  LLogicalCount, LPhysicalCount: Int32;
begin
  // Count logical CPUs (hardware threads)
  LLogicalCount := TNumCPULib.GetLogicalCPUCount();

  // Count physical CPUs (cores)
  LPhysicalCount := TNumCPULib.GetPhysicalCPUCount();

  WriteLn(Format('Logical CPUs:  %d', [LLogicalCount]));
  WriteLn(Format('Physical CPUs: %d', [LPhysicalCount]));
end;

Additional samples can be found in the NumCPULib.Samples folder.

Contributing

Contributions are welcome. Please open an issue for bug reports or feature requests, and submit pull requests.

Tip Jar

If you find this library useful and would like to support its continued development, tips are greatly appreciated! 🙏

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License

This project is licensed under the MIT License.