Co-operative Cancellation Tokens in Rust
This crate provides a simple token that can be used to co-operatively manage cancellation of an operation. Setting a deadline/timeout is also supported.
Usage
Explicit interactive cancellation
This one is a little awkward to show a complete working sketch, but the concept is simple: pass the token to a long running operation and have it check for cancellation every so often.
Then you can wire up a button click or CTRL-C so that it calls
token.cancel()
.
Note that the implementation of Token::cancel()
is a simple atomic operation
and is async signal safe.
use ;
Simple timeout management
In this scenario the token has been configured with a deadline. The deadline
is co-operatively checked by the do_something
function when it calls
check_cancel
.
use ;
use Duration;