Instances of classes that implement either or both of the Lock and Condition interfaces of the java.util.concurrent.locks package are known as high-level concurrency objects. Using the intrinsic locks of such objects is a questionable practice even in cases where the code may appear to function correctly. Consequently, programs that interact with such objects must use only the high-level locking facilities provided by the interfaces; use of the intrinsic locks is forbiddenprohibited. This problem generally arises when code is refactored from intrinsic locking to the java.util.concurrent dynamic-locking utilities.
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Synchronizing on the intrinsic lock of high-level concurrency utilities can cause nondeterministic behavior because the class can end up with two different resulting from inconsistent locking policies.
Rule | Severity | Likelihood | Remediation Cost | Priority | Level |
|---|---|---|---|---|---|
LCK03-J | medium | probable | medium | P8 | L2 |
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