MemStat.Net 0.1.4

MemStat.Net

Get memory statistics of a process in .NET

Features

• Get total memory usage of a process
• Get memory usage percentage of a process

it works on Windows, Linux and MacOS.

• Windows : using GlobalMemoryStatusEx from kernel32.dll
  • Tested on Windows 11 and Azure App Service Windows Plan
• Linux : using free command and parse it.
  • Tested on Azure App Service Linux Plan
• MacOS : using vm_stat command and parse it.
  • Tested on macOS Sonoma

Usage

// you can add to DI container.
builder.Services.AddMemoryUsageFinder();

// Railway Oriented Programming way of using MemoryUsageFinder
app.MapGet(
    "/memoryusage",
    ([FromServices] IMemoryUsageFinder memoryUsageFinder) => memoryUsageFinder
        .ReceiveCurrentMemoryUsage()
        .Conveyor(_ => memoryUsageFinder.GetTotalMemoryUsage())
        .Combine(_ => memoryUsageFinder.GetMemoryUsagePercentage())
        .Remap((total, percent) => new MemoryInfo(total, percent))
        .Match(some => Results.Ok(some), error => Results.Ok(error.Message)));

internal record MemoryInfo(double TotalMemory, double MemoryUsagePercentage);


// Normal way of using MemoryUsageFinder
var memoryUsageFinder = serviceProvider.GetRequiredService<IMemoryUsageFinder>() ?? throw new InvalidOperationException("IMemoryUsageFinder is not registered");
memoryUsageFinder.ReceiveCurrentMemoryUsage();
var totalMemory = memoryUsageFinder.GetTotalMemoryUsage();
var memoryUsagePercentage = memoryUsageFinder.GetMemoryUsagePercentage();
// note : totalMemory and memoryUsagePercentage are in Result Type using ResultBox and double type.
if (totalMemory.IsSuccess)
{
   Console.WriteLine($"Total Memory : {totalMemory.GetValue()}");
}
if (memoryUsagePercentage.IsSuccess)
{
   Console.WriteLine($"Memory Usage Percentage : {memoryUsagePercentage.GetValue()}");
}

// you can also use it without DI
var memoryUsageFinder = new MemoryUsageFinder();
memoryUsageFinder.ReceiveCurrentMemoryUsage();
console.WriteLine(memoryUsageFinder.GetTotalMemoryUsage().UnwrapBox());
console.WriteLine(memoryUsageFinder.GetMemoryUsagePercentage().UnwrapBox());

// If you know you are using Windows, Linux or MacOS, you can use specific implementation.
var memoryUsageFinder = new WindowsMemoryUsageFinder();
// or var memoryUsageFinder = new LinuxMemoryUsageFinder();
// or var memoryUsageFinder = new MacOSMemoryUsageFinder();
console.WriteLine(memoryUsageFinder.GetTotalMemoryUsage().UnwrapBox());
console.WriteLine(memoryUsageFinder.GetMemoryUsagePercentage().UnwrapBox());

Before either GetMemoryUsagePercentage() or GetTotalMemoryUsage(), ReceiveCurrentMemoryUsage() must be called. GetMemoryUsagePercentage() returns 0 to 1 value. 1 means 100% memory usage. Sometime it may be more than 1.0. GetTotalMemoryUsage() returns total memory usage in bytes.

Installation

dotnet add package MemStat.Net