native-executor 0.7.0

Platform-native async task executor
Documentation 
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//! Polyfill executor implementation using async-executor.

use std::{
    sync::OnceLock,
    thread::{self, ThreadId},
};

#[cfg(any(feature = "polyfill", target_os = "android"))]
pub mod executor;

// polyfill timer would be used on non-apple platforms, including android
#[cfg(any(feature = "polyfill", target_os = "android"))]
pub mod timer;

static MAIN_THREAD_ID: OnceLock<ThreadId> = OnceLock::new();

pub(crate) fn register_main_thread() {
    let id = thread::current().id();
    if MAIN_THREAD_ID.set(id).is_err() {
        let existing = MAIN_THREAD_ID
            .get()
            .copied()
            .expect("main thread id not initialized");
        assert_eq!(
            existing, id,
            "polyfill main executor already registered on a different thread"
        );
    }
}

pub(crate) fn assert_main_thread(op: &str) {
    assert!(
        is_main_thread(),
        "{op} must be called from the polyfill main thread"
    );
}

pub(crate) fn is_main_thread() -> bool {
    MAIN_THREAD_ID
        .get()
        .is_some_and(|id| *id == thread::current().id())
}