# scheduler.rs - source
Source of the Rust file `maplibre/src/io/scheduler.rs`.
Keywords: rust, rustlang, rust-lang

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    //! Scheduling.

    use std::future::Future;
    use std::pin::Pin;

    use crate::error::Error;

    /// Async/await scheduler.
    pub struct Scheduler<SM>
    where
        SM: ScheduleMethod,
    {
        schedule_method: SM,
    }

    impl<SM> Scheduler<SM>
    where
        SM: ScheduleMethod,
    {
        pub fn new(schedule_method: SM) -> Self {
            Self { schedule_method }
        }

        pub fn schedule_method(&self) -> &SM {
            &self.schedule_method
        }
    }

    /// Can schedule a task from a future factory and a shared state.
    pub trait ScheduleMethod: 'static {
        #[cfg(not(feature = "no-thread-safe-futures"))]
        fn schedule<T>(
            &self,
            future_factory: impl (FnOnce() -> T) + Send + 'static,
        ) -> Result<(), Error>
        where
            T: Future<Output = ()> + Send + 'static;

        #[cfg(feature = "no-thread-safe-futures")]
        fn schedule<T>(
            &self,
            future_factory: impl (FnOnce() -> T) + Send + 'static,
        ) -> Result<(), Error>
        where
            T: Future<Output = ()> + 'static;
    }