How to Efficiently Unload Assemblies Loaded with Assembly.LoadFrom()?

Unloading Assemblies Loaded with Assembly.LoadFrom()

To determine the time spent on executing GetTypes() after loading a DLL, you can follow the steps mentioned below.

Unloading Assemblies

1. Release References: Set the Assembly object to null to release any explicit references to the loaded DLL. However, this doesn't guarantee immediate unloading.
2. Unload AppDomain: Create a separate application domain (AppDomain) to load the DLL. Once the time measurement is complete, you can unload the AppDomain to release the resources associated with the DLL. This ensures a clean unload.

Garbage Collection

The garbage collector (GC) is responsible for reclaiming unused memory. While setting the Assembly object to null triggers the GC to mark the object for potential collection, it's not guaranteed that the memory will be released immediately.

Example Using AppDomain

The following code demonstrates how to load an assembly in a separate AppDomain and unload it after measuring the time for GetTypes():

// Define the assembly path
string pathToAssembly = @"C:\temp\myassembly.dll";

// Create a new AppDomain
AppDomain dom = AppDomain.CreateDomain("some");

// Load the assembly in the new AppDomain
AssemblyName assemblyName = new AssemblyName();
assemblyName.CodeBase = pathToAssembly;
Assembly assembly = dom.Load(assemblyName);

// Measure the time for GetTypes()
Stopwatch sw = Stopwatch.StartNew();
Type[] types = assembly.GetTypes();
sw.Stop();
double time1 = sw.Elapsed.TotalMilliseconds;

// Unload the AppDomain to release the assembly
AppDomain.Unload(dom);

By unloading the AppDomain, you ensure that the resources allocated to the loaded assembly are released, providing a more accurate time measurement for subsequent loading and GetTypes() operations.

The above is the detailed content of How to Efficiently Unload Assemblies Loaded with Assembly.LoadFrom()?. For more information, please follow other related articles on the PHP Chinese website!