/// <summary>
/// Locks inner lock for <paramref name="key"/> for exclusive access.
/// </summary>
/// <param name="key">Key to distinguish different locks/processes.</param>
/// <returns>Object which is used to exit lock when disposed.</returns>
public IDisposable Lock(object key)
{
Ensure.NotNull(key, "key");
if (keyMapper != null)
{
key = keyMapper(key);
}
LockProvider provider;
using (storageLock.Lock())
{
if (!storage.TryGetValue(key, out provider))
{
provider = new LockProvider();
provider.Disposed += OnProviderDisposed;
storage[key] = provider;
}
}
return(provider.Lock());
}