firebase_rs_sdk/util/
runtime.rs

1//! Shared runtime helpers for bridging async code in synchronous contexts.
2
3#[cfg(not(target_arch = "wasm32"))]
4pub mod native {
5    use std::future::Future;
6    use std::sync::LazyLock;
7
8    use tokio::runtime::{Builder, Runtime};
9
10    static RUNTIME: LazyLock<Runtime> = LazyLock::new(|| {
11        Builder::new_current_thread()
12            .enable_all()
13            .build()
14            .expect("failed to build tokio runtime")
15    });
16
17    /// Blocks the current thread on the provided future using a shared Tokio runtime.
18    pub fn block_on<F, T>(future: F) -> T
19    where
20        F: Future<Output = T> + 'static,
21        T: 'static,
22    {
23        RUNTIME.block_on(future)
24    }
25}
26
27#[cfg(target_arch = "wasm32")]
28pub mod native {
29    use std::future::Future;
30
31    /// Blocking on futures is not supported in wasm builds; callers should rely on async APIs.
32    pub fn block_on<F, T>(_future: F) -> T
33    where
34        F: Future<Output = T>,
35    {
36        panic!("blocking on futures is unsupported in wasm builds")
37    }
38}
39
40pub use native::block_on;
firebase_rs_sdk/util/runtime.rs

firebase_rs_sdk/util/
runtime.rs
