# Second Solution: Direct Sharing

- ## Direct Sharing Results:

  - Dynamic update trivial and instant
  - Unfortunate sharing of some global variables, (e.g., errorInfo)
  - Necessary locking resulted in severe lock contention
  - Extent of the modifications to the Tcl 7.4 source code made upgrades to Tcl 7.5, let alone 8.x, very difficult

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