我们希望这个代码库能够作为树或者环的一个节点。
Our hope is that we can be viewed as just one node in the tree, or ring.
也就是说，在64位环境中，用32位包装器和桥接代码运行的SELECT比在相同数据源上用隔离的64位包装器运行的同样的查询仅慢1%。
That is, SELECTs run with a 32-bit wrapper and the bridging code in a 64-bit environment were only 1% slower than the same queries run with a fenced 64-bit wrapper for the same source.
为了保存节点关系标识，也为了检测环，组编代码会生成附加的数据结构。
To preserve the identity relationships of nodes and to detect cycles, the marshaling code creates additional data structures.
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