public static void ReleaseLoader(CSerialPortLibraryLoader loader)
{
lock (loaderInstances)
{
loader.refCount--;
if (loader.refCount == 0)
{
((IDisposable)loader).Dispose();
loaderInstances.Remove(loader.dynamicLinkLibrariesPath.FullName);
}
}
}
public static CSerialPortLibraryLoader GetOrCreateLoader(DirectoryInfo dynamicLinkLibrariesPath)
{
if (!dynamicLinkLibrariesPath.Exists)
{
throw new DirectoryNotFoundException();
}
lock (loaderInstances)
{
if (loaderInstances.ContainsKey(dynamicLinkLibrariesPath.FullName))
{
var instance = loaderInstances[dynamicLinkLibrariesPath.FullName];
instance.refCount++;
return(instance);
}
var returnedInstance = new CSerialPortLibraryLoader(dynamicLinkLibrariesPath);
loaderInstances[dynamicLinkLibrariesPath.FullName] = returnedInstance;
return(returnedInstance);
}
}
public void Dispose()
{
instance.Dispose();
CSerialPortLibraryLoader.ReleaseLoader(this.libraryLoader);
}
public CSerialPortManager(DirectoryInfo dynamicLinkLibrariesPath)
{
this.libraryLoader = CSerialPortLibraryLoader.GetOrCreateLoader(dynamicLinkLibrariesPath);
instance = new CSerialPortInstance(this, libraryLoader.GetInteropDelegate <CreateNewInstance>().Invoke());
}
