Function splitMutation

fdbserver/StorageCache.actor.cpp:1054–1070

template <class T>
void splitMutation(StorageCacheData* data, KeyRangeMap<T>& map, MutationRef const& m, Version ver) {
	if (isSingleKeyMutation((MutationRef::Type)m.type)) {
		auto i = map.rangeContaining(m.param1);
		if (i->value()) // If this key lies in the cached key-range on this server
			data->addMutation(i->range(), ver, m);
	} else if (m.type == MutationRef::ClearRange) {
		KeyRangeRef mKeys(m.param1, m.param2);
		auto r = map.intersectingRanges(mKeys);
		for (auto i = r.begin(); i != r.end(); ++i) {
			if (i->value()) { // if this sub-range exists on this cache server
				KeyRangeRef k = mKeys & i->range();
				data->addMutation(i->range(), ver, MutationRef((MutationRef::Type)m.type, k.begin, k.end));
			}
		}
	} else
		ASSERT(false); // Unknown mutation type in splitMutations
}

void rollback(StorageCacheData* data, Version rollbackVersion, Version nextVersion) {
	CODE_PROBE(true, "call to cacheRange rollback");