Method getOrCreateViewNodeTreeForContextId

valdi/src/valdi/runtime/Runtime.cpp:300–314

SharedViewNodeTree Runtime::createViewNodeTree(const SharedContext& context,
                                               ViewNodeTreeThreadAffinity threadAffinity) {
    return _viewNodeManager.createViewNodeTreeForContext(context, threadAffinity);
}

SharedViewNodeTree Runtime::getOrCreateViewNodeTreeForContextId(ContextId contextId) {
    auto tree = _viewNodeManager.getViewNodeTreeForContextId(contextId);
    if (tree != nullptr) {
        return tree;
    }

    auto context = _contextManager->getContext(contextId);
    if (context == nullptr) {
        return nullptr;
    }

    // Use the thread-safe getOrCreateViewNodeTreeForContext which holds the lock
    // during both the existence check and creation to avoid TOCTOU race conditions.
    return _viewNodeManager.getOrCreateViewNodeTreeForContext(context, ViewNodeTreeThreadAffinity::MAIN_THREAD);