How does cancellation work in the pthreads library?

How does cancellation work in the pthreads library?

In the pthreads library, cancellation allows a thread to be terminated before it has completed its execution. You can use the pthread_cancel() function to request cancellation.

Are there different cancellation states for threads?

Yes, threads can be in two cancellation states: "cancelable" and "non-cancelable." A cancelable thread can be canceled at certain points, while a non-cancelable thread cannot be canceled.

What are the default cancellation settings?

By default, threads are created in a cancelable state, and the cancellation type is set to asynchronous, meaning they can be canceled at any time.

How can I make a thread non-cancelable?

You can make a thread non-cancelable by using pthread_setcancelstate() to set the state to PTHREAD_CANCEL_DISABLE.

What happens to resources when a thread is canceled?

When a thread is canceled, it will release its resources, but you should ensure proper cleanup by using cleanup handlers.