12 releases
0.2.9 | May 7, 2021 |
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0.2.8 | Apr 8, 2021 |
0.2.6 | Feb 4, 2021 |
0.2.3 | Jan 23, 2021 |
0.1.1 | Sep 4, 2020 |
#2 in #userland
Used in async-wormhole
46KB
729 lines
Switcheroo
This library is heavily inspired by https://github.com/edef1c/libfringe.
Currently only works in Rust nightly.
Switcheroo provides lightweight context switches in Rust. It runs on Windows, MacOs and Linux (x64 & AArch64).
Example
use switcheroo::stack::*;
use switcheroo::Generator;
fn main() {
let stack = EightMbStack::new().unwrap();
let mut add_one = Generator::new(stack, |yielder, mut input| {
loop {
if input == 0 {
break;
}
input = yielder.suspend(input + 1);
}
});
assert_eq!(add_one.resume(2), Some(3));
assert_eq!(add_one.resume(127), Some(128));
assert_eq!(add_one.resume(0), None);
assert_eq!(add_one.resume(0), None);
}
Performance
On my Macbook Pro 15" (Late 2013) each context switch is comparable to a function call (sub-nanosecond).
Developer Experience
Switcheroo tries hard to not let the context switching disturb default Rust behaviour on panics and unwinds. The displayed backtrace should stretch across the context switch boundary.
When dropping a non-empty stack, it will be unwind to free any resources allocated on it.
License
Licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Dependencies
~220KB