What are some examples of reentrant functions in C?
An example of an AI chatbot conversation about reentrant functions in C programming.
What are some examples of reentrant functions in C?
Reentrant functions are those that can be interrupted and safely called again before the previous executions complete. Examples include functions like strtok_r, malloc, and qsort.
Can you explain why malloc is considered reentrant?
malloc is not inherently reentrant by itself, but when used in a multi-threaded environment with proper locking mechanisms, it can be made safe for concurrent use.
What about strtok_r? How is it different from strtok?
strtok_r is a reentrant version of strtok. It uses an additional argument to maintain context, allowing multiple threads to tokenize strings independently.
Are there any other examples of reentrant functions?
Yes, other examples include localtime_r, asctime_r, and certain mathematical functions like sin and cos when used in a thread-safe manner.
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