What are common mistakes when using reentrant functions?

What are common mistakes when using reentrant functions?

Common mistakes include not properly managing shared resources, failing to use thread-safe data structures, and ignoring recursion limits.

Can you explain what a reentrant function is?

A reentrant function is one that can be interrupted in the middle of execution and safely called again ('re-entered') before its previous executions complete.

How can I ensure my function is reentrant?

To ensure reentrancy, avoid using static or global variables, and use local variables instead. Also, make sure to handle shared resources carefully.

What are some examples of reentrant functions?

Examples include mathematical functions like sin() and cos(), as they do not rely on shared state.

What tools can help me test reentrancy in my functions?

You can use tools like ThreadSanitizer, Valgrind, or custom unit tests to check for reentrancy issues.