Daily Term: Reentrancy

Reentrancy

Reentrancy refers to a function’s ability to be safely called again (e.g., recursively or by another thread) before its previous invocation completes, without causing issues. For example, a reentrant function avoids using shared mutable state, relying instead on local variables or parameters. Reentrancy is crucial for concurrency and interrupt handling, ensuring reliability, but non-reentrant functions can lead to bugs like data corruption if interrupted.

Date: 2025-08-20

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Previous Terms

Immutable Object

An object whose state cannot be changed after creation.

Date: 2025-08-19

Atomic Operation

An operation that completes without interruption.

Date: 2025-08-18