フリー問題

問題文

A figure worked out early can be written into the shared store or carried along the path from step to step. Which statement sets out both sides of the shared store?

選択肢

1. Placing a value into the shared store buys the buffer that any later step can use and actually loses the blocking that a value carried along the path would keep
2. Placing a value into the shared store buys the openness that any later step can use and actually loses the privacy that a value carried along the path would keep
3. Placing a value into the shared store buys the buffer that any later step can use and actually loses the privacy that a value carried along the path would keep
4. Placing a value into the shared store buys the openness that any later step can use and actually loses the blocking that a value carried along the path would keep