public override ILockStrategy CreateLock(NodeHandle handle, out object refobj)
{
NodeWithLock nlck = new NodeWithLock(null, LockFactory.Create());
handle.SetCacheEntry(nlck);
refobj = nlck;
bool acquired = nlck.Lock.TryWrite(base.Options.LockTimeout);
DeadlockException.Assert(acquired);
return(nlck.Lock);
}
protected override NodePin Lock(NodePin parent, LockType ltype, NodeHandle child)
{
NodeWithLock nlck;
if (!child.TryGetCache(out nlck))
{
child.SetCacheEntry(nlck = new NodeWithLock(null, LockFactory.Create()));
}
bool acquired;
if (ltype == LockType.Read)
{
acquired = nlck.Lock.TryRead(base.Options.LockTimeout);
}
else
{
acquired = nlck.Lock.TryWrite(base.Options.LockTimeout);
}
DeadlockException.Assert(acquired);
try
{
if (nlck.Node == null)
{
using (new SafeLock <DeadlockException>(nlck, base.Options.LockTimeout))
Storage.TryGetNode(child.StoreHandle, out nlck.Node, NodeSerializer);
}
Assert(nlck.Node != null);
return(new NodePin(child, nlck.Lock, ltype, ltype, nlck, nlck.Node, null));
}
catch
{
if (ltype == LockType.Read)
{
nlck.Lock.ReleaseRead();
}
else
{
nlck.Lock.ReleaseWrite();
}
throw;
}
}
