338     SharedContextMutex *oldRoot = otherLockedRoot;  in Merge()  local
341     if (oldRoot->mRank > newRoot->mRank)  in Merge()
343         std::swap(oldRoot, newRoot);  in Merge()
345     else if (oldRoot->mRank == newRoot->mRank)  in Merge()
351     for (SharedContextMutex *const leaf : oldRoot->mLeaves)  in Merge()
353         ASSERT(leaf->getRoot() == oldRoot);  in Merge()
356     oldRoot->mLeaves.clear();  in Merge()
357     oldRoot->setNewRoot(newRoot);  in Merge()
360     oldRoot->doUnlock();  in Merge()
363     while (oldRoot->mLockLevel > 0)  in Merge()
366         oldRoot->doUnlock();  in Merge()
373     SharedContextMutex *const oldRoot = getRoot();  in setNewRoot()  local
375     ASSERT(newRoot != oldRoot);  in setNewRoot()
381     if (oldRoot != this)  in setNewRoot()
383         mOldRoots.emplace_back(oldRoot);  in setNewRoot()
424         for (SharedContextMutex *oldRoot : mOldRoots)  in onDestroy()
426             ASSERT(oldRoot->getRoot() == root);  in onDestroy()
427             ASSERT(oldRoot->mLeaves.empty());  in onDestroy()
428             oldRoot->release();  in onDestroy()