Uno/Spec/Threading-Architecture

Type: Specification State: draft

Umbrella specification regarding when to use which thread related construct in Uno implementations.

APIs

When implementing fast APIs, use threads for accessing slow APIs. Do notify about completion asynchronously.
Be conservative, only program thread related / aware where necessary.
Implement public libraries APIs etc. as wide as the parameters (e.g. always return appropriate purpose objects in case of OBI specialization)
Implement public APIs thread-transparent.
Only program thread-safe, if parallelism is required (e.g. for interrupting a method call).
Encapsulate thread-affinity.
Enable concurrent access to inter-thread objects (avoiding bottlenecks).