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executor: add Pender, rework Cargo features.

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This introduces a `Pender` struct with enum cases for thread-mode, interrupt-mode and
custom callback executors. This avoids calls through function pointers when using only
the thread or interrupt executors. Faster, and friendlier to `cargo-call-stack`.

`embassy-executor` now has `arch-xxx` Cargo features to select the arch and to enable
the builtin executors (thread and interrupt).
This commit is contained in:
Dario Nieuwenhuis
2023-04-03 01:18:27 +02:00
parent b41ee47115
commit d3c4e4a20a
50 changed files with 667 additions and 522 deletions
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71
embassy-executor/src/lib.rs
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@@ -1,5 +1,5 @@
#![cfg_attr(not(any(feature = "std", feature = "wasm")), no_std)]
#![cfg_attr(all(feature = "nightly", target_arch = "xtensa"), feature(asm_experimental_arch))]
#![cfg_attr(not(any(feature = "arch-std", feature = "arch-wasm")), no_std)]
#![cfg_attr(all(feature = "nightly", feature = "arch-xtensa"), feature(asm_experimental_arch))]
#![allow(clippy::new_without_default)]
#![doc = include_str!("../README.md")]
#![warn(missing_docs)]
@@ -10,41 +10,35 @@ pub(crate) mod fmt;
#[cfg(feature = "nightly")]
pub use embassy_macros::task;
cfg_if::cfg_if! {
if #[cfg(cortex_m)] {
#[path="arch/cortex_m.rs"]
mod arch;
pub use arch::*;
#[cfg(feature = "nightly")]
pub use embassy_macros::main_cortex_m as main;
}
else if #[cfg(target_arch="riscv32")] {
#[path="arch/riscv32.rs"]
mod arch;
pub use arch::*;
#[cfg(feature = "nightly")]
pub use embassy_macros::main_riscv as main;
}
else if #[cfg(all(target_arch="xtensa", feature = "nightly"))] {
#[path="arch/xtensa.rs"]
mod arch;
pub use arch::*;
}
else if #[cfg(feature="wasm")] {
#[path="arch/wasm.rs"]
mod arch;
pub use arch::*;
#[cfg(feature = "nightly")]
pub use embassy_macros::main_wasm as main;
}
else if #[cfg(feature="std")] {
#[path="arch/std.rs"]
mod arch;
pub use arch::*;
#[cfg(feature = "nightly")]
pub use embassy_macros::main_std as main;
}
macro_rules! check_at_most_one {
(@amo [$($feats:literal)*] [] [$($res:tt)*]) => {
#[cfg(any($($res)*))]
compile_error!(concat!("At most one of these features can be enabled at the same time:", $(" `", $feats, "`",)*));
};
(@amo $feats:tt [$curr:literal $($rest:literal)*] [$($res:tt)*]) => {
check_at_most_one!(@amo $feats [$($rest)*] [$($res)* $(all(feature=$curr, feature=$rest),)*]);
};
($($f:literal),*$(,)?) => {
check_at_most_one!(@amo [$($f)*] [$($f)*] []);
};
}
check_at_most_one!("arch-cortex-m", "arch-riscv32", "arch-xtensa", "arch-std", "arch-wasm",);
#[cfg(feature = "_arch")]
#[cfg_attr(feature = "arch-cortex-m", path = "arch/cortex_m.rs")]
#[cfg_attr(feature = "arch-riscv32", path = "arch/riscv32.rs")]
#[cfg_attr(feature = "arch-xtensa", path = "arch/xtensa.rs")]
#[cfg_attr(feature = "arch-std", path = "arch/std.rs")]
#[cfg_attr(feature = "arch-wasm", path = "arch/wasm.rs")]
mod arch;
#[cfg(feature = "_arch")]
pub use arch::*;
pub mod raw;
mod spawner;
pub use spawner::*;
/// Implementation details for embassy macros.
/// Do not use. Used for macros and HALs only. Not covered by semver guarantees.
@@ -72,8 +66,3 @@ pub mod _export {
($($tt:tt)*) => {};
}
}
pub mod raw;
mod spawner;
pub use spawner::*;