Chapter 9. Visibility and Atomicity (VNA)
Rules
Risk Assessment Summary
VNA00-J. Ensure visibility when accessing shared primitive variables
Reading a shared primitive variable in one thread may not yield the value of the most recent write to the variable from another thread. Consequently, the thread may observe a stale value of the shared variable. To ensure the visibility of the most recent update, either the variable must be declared volatile or the reads and writes must be synchronized.
Declaring a shared variable volatile guarantees visibility ...
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