39 lines
1.1 KiB
Rust
39 lines
1.1 KiB
Rust
// Platform helpers to ease future no_std portability.
|
|
// The crate currently depends on `std`, but concentrating platform-specific
|
|
// pieces here makes migration simpler.
|
|
|
|
#[cfg(feature = "std")]
|
|
pub use std::sync::Arc;
|
|
|
|
#[cfg(feature = "std")]
|
|
pub fn run_parallel<L, R, OutL, OutR>(left: L, right: R) -> (OutL, OutR)
|
|
where
|
|
L: FnOnce() -> OutL + Send + 'static,
|
|
R: FnOnce() -> OutR + Send + 'static,
|
|
OutL: Send + 'static,
|
|
OutR: Send + 'static,
|
|
{
|
|
let h1 = std::thread::spawn(left);
|
|
let h2 = std::thread::spawn(right);
|
|
(h1.join().unwrap(), h2.join().unwrap())
|
|
}
|
|
|
|
#[cfg(not(feature = "std"))]
|
|
mod no_std_support {
|
|
extern crate alloc;
|
|
pub use alloc::sync::Arc;
|
|
|
|
pub fn run_parallel<L, R, OutL, OutR>(left: L, right: R) -> (OutL, OutR)
|
|
where
|
|
L: FnOnce() -> OutL + Send + 'static,
|
|
R: FnOnce() -> OutR + Send + 'static,
|
|
OutL: Send + 'static,
|
|
OutR: Send + 'static,
|
|
{
|
|
// No threads available: fall back to sequential execution.
|
|
(left(), right())
|
|
}
|
|
}
|
|
|
|
#[cfg(not(feature = "std"))]
|
|
pub use no_std_support::*;
|