public void Replace(Func <T, T> replacer)
{
using (var manager = new LockManager(resourceLock))
{
manager.EnterWriteLock();
var resource = GetResource();
var newResource = replacer(resource);
SaveResource(newResource, filename);
}
}
void IDisposable.Dispose()
{
try
{
save(Resource);
}
finally
{
manager.Dispose();
manager = null;
Resource = null;
}
}
public ResourceReader(Func <T> resource, ReaderWriterLockSlim resourceLock)
{
try
{
manager = new LockManager(resourceLock);
manager.EnterUpgradeableReadLock();
Resource = resource();
manager.DowngradeToRead();
}
catch
{
manager.Dispose();
throw;
}
}
public ResourceWriter(Func <T> resource, ReaderWriterLockSlim resourceLock, Action <T> save)
{
try
{
manager = new LockManager(resourceLock);
manager.EnterWriteLock();
Resource = resource();
this.save = save;
}
catch
{
manager.Dispose();
throw;
}
}