Struct re_viewer::background_tasks::BackgroundTasks

pub struct BackgroundTasks {
    promises: HashMap<String, Promise<Box<dyn Any + Send>>>,
}

Pending background tasks, e.g. files being saved.

Fields

promises: HashMap<String, Promise<Box<dyn Any + Send>>>

Pending background tasks, using poll_promise.

Implementations

impl BackgroundTasks

pub fn spawn_threaded_promise<F, T>( &mut self, name: impl Into<String>, f: F ) -> Result<()>

where F: FnOnce() -> T + Send + 'static, T: Send + 'static,

Creates a promise with the specified name that will run f on a background thread using the poll_promise crate.

Names can only be re-used once the promise with that name has finished running, otherwise an other is returned.

pub fn spawn_file_saver<F>(&mut self, f: F) -> Result<()>

where F: FnOnce() -> Result<PathBuf> + Send + 'static,

pub fn poll_promise<T: Any>(&mut self, name: impl AsRef<str>) -> Option<T>

Polls the promise with the given name.

Returns Some<T> it it’s ready, or None otherwise.

Panics if T does not match the actual return value of the promise.

pub fn poll_file_saver_promise(&mut self) -> Option<Result<PathBuf>>

pub fn is_file_save_in_progress(&self) -> bool

Trait Implementations

impl Default for BackgroundTasks

fn default() -> BackgroundTasks

Returns the “default value” for a type.