To extend the proposed techniques to support more complex data structures like priority queues or skip lists on non cache-coherent architectures, several considerations need to be taken into account.
For priority queues, the directory-based approach can be adapted by introducing a mechanism to prioritize elements based on certain criteria. Each element inserted into the priority queue would be associated with a priority value, allowing for efficient retrieval of the highest priority element. The synchronizer would need to manage the ordering of elements based on their priorities, ensuring that the highest priority element is dequeued first.
Skip lists, on the other hand, require a more intricate structure involving multiple levels of pointers to allow for efficient searching and insertion. Implementing skip lists in a distributed manner would involve coordinating the updates across different nodes to maintain the integrity of the structure. Each node would need to manage its local skip list structure while also communicating with other nodes to perform operations that span multiple levels.
In both cases, the key challenge lies in ensuring consistency and synchronization across distributed nodes without the reliance on cache-coherence. Techniques such as message-passing, hierarchical structures, and efficient communication protocols would need to be further optimized to support the complexities of priority queues and skip lists in a distributed non cache-coherent environment.