drop once_cell dependency

Author: Keruspe

.github/workflows/build-and-test.yaml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        rust: [nightly, beta, stable, 1.60.0]
+        rust: [nightly, beta, stable, 1.70.0]
     steps:
       - uses: actions/checkout@v2
 

Cargo.toml

@@ -11,7 +11,7 @@ documentation = "https://docs.rs/async-global-executor"
 keywords = ["async", "await", "future", "executor"]
 categories = ["asynchronous", "concurrency"]
 readme = "README.md"
-rust-version = "1.60"
+rust-version = "1.70"
 
 [features]
 default = ["async-io"]
@@ -23,7 +23,6 @@ async-channel = "^2.1.1"
 async-lock = "^3.2"
 blocking = "^1.5"
 futures-lite = "^2.0"
-once_cell = "^1.4"
 
 [dependencies.async-executor]
 version = "^1.12"

src/config.rs

@@ -1,10 +1,9 @@
-use once_cell::sync::OnceCell;
 use std::{
     fmt,
-    sync::atomic::{AtomicUsize, Ordering},
+    sync::{atomic::{AtomicUsize, Ordering}, OnceLock},
 };
 
-pub(crate) static GLOBAL_EXECUTOR_CONFIG: OnceCell<Config> = OnceCell::new();
+pub(crate) static GLOBAL_EXECUTOR_CONFIG: OnceLock<Config> = OnceLock::new();
 
 /// Configuration to init the thread pool for the multi-threaded global executor.
 #[derive(Default)]

src/threading.rs

@@ -2,8 +2,7 @@ use crate::Task;
 use async_channel::{Receiver, Sender};
 use async_lock::Mutex;
 use futures_lite::future;
-use once_cell::sync::OnceCell;
-use std::{io, thread};
+use std::{cell::OnceCell, io, thread};
 
 // The current number of threads (some might be shutting down and not in the pool anymore)
 static GLOBAL_EXECUTOR_THREADS_NUMBER: Mutex<usize> = Mutex::new(0);

src/tokio.rs

@@ -1,10 +1,10 @@
-use once_cell::sync::Lazy;
+use std::sync::LazyLock;
 
 pub(crate) fn enter() -> tokio::runtime::EnterGuard<'static> {
     RUNTIME.enter()
 }
 
-static RUNTIME: Lazy<tokio::runtime::Handle> = Lazy::new(|| {
+static RUNTIME: LazyLock<tokio::runtime::Handle> = LazyLock::new(|| {
     tokio::runtime::Handle::try_current().unwrap_or_else(|_| {
         let rt = tokio::runtime::Runtime::new().expect("failed to build tokio runtime");
         let handle = rt.handle().clone();