protected virtual void Dispose(bool disposing)
{
if (!this.disposed && disposing)
{
this.disposing = true;
GC.Collect();
GC.WaitForPendingFinalizers();
if (this.assemblyReferences != null)
{
foreach (var reference in this.assemblyReferences)
{
// https://docs.microsoft.com/en-us/dotnet/standard/assembly/unloadability#use-collectible-assemblyloadcontext
for (int i = 0; reference.IsAlive && (i < 10); i++)
{
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
}
// Unload any loaded native assemblies
foreach (var nativeAssembly in this.loadedNativeLibraries)
{
this.nativeAssemblyUnloader.UnloadNativeAssembly(nativeAssembly.Key, nativeAssembly.Value);
}
this.loadedPlugins.Clear();
this.assemblyReferences.Clear();
this.loadedNativeLibraries.Clear();
this.pluginDependencyContext?.Dispose();
this.pluginDependencyResolver?.Dispose();
this.resolver?.Dispose();
this.resolver = null;
this.loadedNativeLibraries = null;
this.loadedPlugins = null;
this.assemblyReferences = null;
this.assemblyLoadStrategy = null;
this.pluginDependencyContext = null;
this.pluginDependencyResolver = null;
this.fullPathToPluginAssembly = null;
this.initialPluginLoadDirectory = null;
this.pluginPlatformVersion = null;
this.nativeAssemblyUnloader = null;
this.pluginDependencyResolverFactory = null;
this.assemblyLoadStrategyFactory = null;
this.assemblyDependencyResolverFactory = null;
this.fileSystemUtilities = null;
this.runtimeDefaultAssemblyLoadContext = null;
this.pluginDependencyContextProvider = null;
}
this.disposed = true;
}
public DefaultAssemblyLoadContext(Func <INativeAssemblyUnloader> nativeAssemblyUnloaderFactory,
Func <IPluginDependencyResolver> pluginDependencyResolverFactory,
Func <IAssemblyLoadStrategy> assemblyLoadStrategyFactory,
Func <string, IAssemblyDependencyResolver> assemblyDependencyResolverFactory,
Func <IFileSystemUtilities> fileSystemUtilitiesFactory,
Func <IRuntimeDefaultAssemblyContext> runtimeDefaultAssemblyLoadContextFactory,
Func <IPluginDependencyContextProvider> pluginDependencyContextProviderFactory)
{
this.nativeAssemblyUnloader = nativeAssemblyUnloaderFactory.ThrowIfNull(nameof(nativeAssemblyUnloaderFactory))();
this.pluginDependencyResolverFactory = pluginDependencyResolverFactory.ThrowIfNull(nameof(pluginDependencyResolverFactory));
this.assemblyLoadStrategyFactory = assemblyLoadStrategyFactory.ThrowIfNull(nameof(assemblyLoadStrategyFactory));
this.assemblyDependencyResolverFactory = assemblyDependencyResolverFactory.ThrowIfNull(nameof(assemblyDependencyResolverFactory));
this.fileSystemUtilities = fileSystemUtilitiesFactory.ThrowIfNull(nameof(fileSystemUtilitiesFactory))();
this.runtimeDefaultAssemblyLoadContext = runtimeDefaultAssemblyLoadContextFactory.ThrowIfNull(nameof(runtimeDefaultAssemblyLoadContextFactory))();
this.pluginDependencyContextProvider = pluginDependencyContextProviderFactory.ThrowIfNull(nameof(pluginDependencyContextProviderFactory))();
this.loadedNativeLibraries = new ConcurrentDictionary <string, IntPtr>();
this.loadedPlugins = new ConcurrentBag <string>();
this.assemblyReferences = new ConcurrentBag <WeakReference>();
}
