Function tarantool::fiber::is_cancelled

pub fn is_cancelled() -> bool

Check current fiber for cancellation (it must be checked manually).

NOTE: Any yield is a cancel point be that implicit or explicit yield. This includes calling fiber::start, inserting data into spaces, doing rpc, working with fiber::Channel or fiber::Cond, etc. Because of rust’s explicit error handling style it would not be useful to make all of these api methods automatically handle the fiber cancelation, because checking their result for some FiberCancelled error variant would be equivalent to just explicitly calling is_cancelled after each of those calls.

For this reason, if you suspect that your fiber may be cancelled at some point, you should design it such that it explicitly calls is_cancelled (for example once per some endless loop iteration) and finishes execution, otherwise the fiber’s memory may leak.