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tokio 1.24.1

An event-driven, non-blocking I/O platform for writing asynchronous I/O backed applications.
Documentation 
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//! This file contains mocks of the metrics types used in the I/O driver.
//!
//! The reason these mocks don't live in `src/runtime/mock.rs` is because
//! these need to be available in the case when `net` is enabled but
//! `rt` is not.

cfg_not_rt_and_metrics_and_net! {
    #[derive(Default)]
    pub(crate) struct IoDriverMetrics {}

    impl IoDriverMetrics {
        pub(crate) fn incr_fd_count(&self) {}
        pub(crate) fn dec_fd_count(&self) {}
        pub(crate) fn incr_ready_count_by(&self, _amt: u64) {}
    }
}

cfg_net! {
    cfg_rt! {
        cfg_metrics! {
            pub(crate) use crate::runtime::IoDriverMetrics;
        }
    }
}