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|
//! Abstracts out the APIs necessary to `Runtime` for integrating the time
//! driver. When the `time` feature flag is **not** enabled. These APIs are
//! shells. This isolates the complexity of dealing with conditional
//! compilation.
pub(crate) use variant::*;
#[cfg(all(feature = "time", not(loom)))]
mod variant {
use crate::park::Either;
use crate::runtime::io;
use crate::time::{self, driver};
pub(crate) type Clock = time::Clock;
pub(crate) type Driver = Either<driver::Driver<io::Driver>, io::Driver>;
pub(crate) type Handle = Option<driver::Handle>;
pub(crate) fn create_clock() -> Clock {
Clock::new()
}
/// Create a new timer driver / handle pair
pub(crate) fn create_driver(
enable: bool,
io_driver: io::Driver,
clock: Clock,
) -> (Driver, Handle) {
if enable {
let driver = driver::Driver::new(io_driver, clock);
let handle = driver.handle();
(Either::A(driver), Some(handle))
} else {
(Either::B(io_driver), None)
}
}
pub(crate) fn with_default<F, R>(handle: &Handle, clock: &Clock, f: F) -> R
where
F: FnOnce() -> R,
{
let _time = handle.as_ref().map(|handle| driver::set_default(handle));
clock.enter(f)
}
}
#[cfg(any(not(feature = "time"), loom))]
mod variant {
use crate::runtime::io;
pub(crate) type Clock = ();
pub(crate) type Driver = io::Driver;
pub(crate) type Handle = ();
pub(crate) fn create_clock() -> Clock {
()
}
/// Create a new timer driver / handle pair
pub(crate) fn create_driver(
_enable: bool,
io_driver: io::Driver,
_clock: Clock,
) -> (Driver, Handle) {
(io_driver, ())
}
pub(crate) fn with_default<F, R>(_handler: &Handle, _clock: &Clock, f: F) -> R
where
F: FnOnce() -> R,
{
f()
}
}
|
