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2024.3

Static member guarded by instance field or this

Warning
New
Last modified: 03 December 2024

Reports @GuardedBy annotations on static fields or methods in which the guard is either a non-static field or this.

Guarding a static element with a non-static element may result in excessive concurrency, multiple threads may be able to access the guarded field simultaneously by locking in different object contexts.

Example:

Supported @GuardedBy annotations are:

  • net.jcip.annotations.GuardedBy

  • javax.annotation.concurrent.GuardedBy

  • org.apache.http.annotation.GuardedBy

  • com.android.annotations.concurrency.GuardedBy

  • androidx.annotation.GuardedBy

  • com.google.errorprone.annotations.concurrent.GuardedBy