JMR-dev
f9edc1dc64
Concurrency crashes - H1 HardwareMonitorService.RebuildTree now builds the tree under _updateLock, so it can't enumerate a hardware's _active HashSet while the update loop mutates it. - A1 AppSettings now guards every dictionary read/write (and snapshots in Save) with a lock — safe under concurrent access from the parallel discovery threads. - R2 Plumbed that same lock (HardwareMonitorService.SensorReadLock) into RemoteWebServer and wrapped the Prometheus sensor.Values enumeration with it. - L1 Computer — refactored Add into AddCore, which performs the cancellation/enabled re-check and the _groups insertion atomically under _lock. A deferred task can no longer add (and leak) a group after Close() drained the list; if it loses the race it closes the group instead. - M1 UpdateTimer_Tick now bails before/after the await when _isShuttingDown is set in MainWindow_Closed, so an in-flight tick won't touch the disposed view-model/Computer. Broken behavior - T1 Tray callback now decodes NOTIFYICON_VERSION_4 correctly (message = LOWORD(lParam), icon id = HIWORD(lParam)) — right-click menu and double-click work again. - M2 A transient update exception no longer calls _timer.Stop(); the loop keeps running. - H2 Newly discovered (deferred) storage devices get the current ForceDriveWakeup setting applied in HardwareChanged. - V2 Sensor items carry a parent reference; toggling IsVisible recomputes the parent group's visibility, so no empty group headers. (Strengthened the existing test that had skipped this assertion.) - H3 Tree-rebuild coalescing now uses a dirty flag with a re-check, so a change arriving during a rebuild isn't lost. - R4 Web routing matches endpoints exactly on the query-stripped path (Url.AbsolutePath), so static assets like metrics.html aren't hijacked. - L8 IntelCpu.Update skips the bus/core-clock math while TimeStampCounterFrequency is still 0 (deferred-TSC window), so clocks keep their prior value instead of reporting 0 MHz. - V1 Existing plot series keep their assigned color; only an explicit user pen color updates them (no per-tick color shifting). - M3 Runtime errors write to a dedicated runtime.log (once), instead of overwriting the shared startup.log. - T2 CreateSensorIcon returns IntPtr.Zero on DIB failure instead of the shared main-icon handle (which callers DestroyIcon). I also set _isOpen = false in HardwareMonitorService.Dispose so the rebuild guard actually holds during shutdown (the latent after-close-rebuild issue adjacent to H3
LibreHardwareMonitor
Libre Hardware Monitor is free software that can monitor the temperature sensors, fan speeds, voltages, load and clock speeds of your computer.
What's included?
| Name | .NET | Build Status |
|---|---|---|
| LibreHardwareMonitor Windows Forms based application that presents all data in a graphical interface |
.NET Framework 4.7.2 .NET 10.0 |
 |
| LibreHardwareMonitorLib Library that allows you to use all features in your own application |
.NET Framework 4.7.2 .NET Standard 2.0 .NET 8.0, .NET 9.0, and .NET 10.0 |
|
What can it do?
You can read information from devices such as:
- Motherboards
- Intel and AMD processors
- NVIDIA, AMD and Intel graphics cards
- HDD, SSD and NVMe hard drives
- Network cards
Where can I download it?
You can download the latest release here.
Nightly builds
If you have a GitHub account, you can download nightly builds here. Otherwise, you can download the latest nightly build here.
How can I help improve it?
The LibreHardwareMonitor team welcomes feedback and contributions!
You can check if it works properly on your motherboard. For many manufacturers, the way of reading data differs a bit, so if you notice any inaccuracies, please send us a pull request. If you have any suggestions or improvements, don't hesitate to create an issue.
Developer information
Integrate the library in own application
- Add the LibreHardwareMonitorLib NuGet package to your application.
- Use the sample code below.
Sample code
Computer computer = new Computer
{
IsCpuEnabled = true,
IsGpuEnabled = true,
IsMemoryEnabled = true,
IsMotherboardEnabled = true,
IsControllerEnabled = true,
IsNetworkEnabled = true,
IsStorageEnabled = true,
IsPowerMonitorEnabled = true,
};
computer.Open();
computer.Accept(new UpdateVisitor());
foreach (IHardware hardware in computer.Hardware)
{
Console.WriteLine("Hardware: {0}", hardware.Name);
foreach (IHardware subhardware in hardware.SubHardware)
{
Console.WriteLine("\tSubhardware: {0}", subhardware.Name);
foreach (ISensor sensor in subhardware.Sensors)
Console.WriteLine("\t\tSensor: {0}, value: {1}", sensor.Name, sensor.Value);
}
foreach (ISensor sensor in hardware.Sensors)
Console.WriteLine("\tSensor: {0}, value: {1}", sensor.Name, sensor.Value);
}
computer.Close();
public class UpdateVisitor : IVisitor
{
public void VisitComputer(IComputer computer) => computer.Traverse(this);
public void VisitHardware(IHardware hardware)
{
hardware.Update();
foreach (IHardware subHardware in hardware.SubHardware)
subHardware.Accept(this);
}
public void VisitSensor(ISensor sensor) { }
public void VisitParameter(IParameter parameter) { }
}
Administrator rights
Some sensors require administrator privileges to access the data. Restart your IDE with admin privileges, or add an app.manifest file to your project with requestedExecutionLevel on requireAdministrator.
Warning
We're not affiliated with librehardwaremonitor.com.
For your safety, please avoid using that site.
Acknowledgements
Many thanks to all contributors listed below, and to JetBrains for providing tooling.
License
LibreHardwareMonitor is free and open source software licensed under MPL 2.0. Some parts of LibreHardwareMonitor are licensed under different terms, see THIRD-PARTY-LICENSES.