Help with modelling ui loop with async

help
1

I want to create a library that can perform many tasks without blocking the main thread. These tasks would include

  • Web requests
  • File writes/moves/etc
  • (de)compressing archives
  • getting input from user (ui events)
  • ...plus others

I want these tasks to be cancellable, and also to report their progress to the main thread.

What I don't really know is what model to use on the main thread. ideally I could make that async as well, and do a big select on all possible events (where I could actually run the whole thing on one thread). Maybe something like

struct Scheduler {
    downloads: Vec<reqwest::Response>,
    // ... ui stuff etc
}

enum SchedulerEvent<'a> {
    DownloadProgress(&'a reqwest::Response),
    DownloadError(..),
    // ... ui events etc
}

impl Scheduler {
    async fn next_event(&self) -> SchedulerEvent {
        // select the next event
    }
}

Then your main function could be (assuming async fn main is a thing)

async fn main() {
    let scheduler = Scheduler::create_somehow();
    loop {
        match scheduler.next_event().await {
             // start new downloads, display progress to screen, or break loop if it's time to close
        }
    }
}

Are there any keywords I can google to find info on this kind of workflow? Does anyone have any experience with things like this? Am I doing it the best way? Any and all help is welcome.

2

There is at least,

though i haven't give it try yet.

3

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