Replace lazy_static with LazyLock

Cargo.toml

@@ -824,7 +824,6 @@ kvdb-memorydb = { version = "0.13.0" }
 kvdb-rocksdb = { version = "0.19.0" }
 kvdb-shared-tests = { version = "0.11.0" }
 landlock = { version = "0.3.0" }
-lazy_static = { version = "1.5.0" }
 libc = { version = "0.2.155" }
 libfuzzer-sys = { version = "0.4" }
 libp2p = { version = "0.52.4" }

cumulus/pallets/parachain-system/Cargo.toml

@@ -49,7 +49,6 @@ cumulus-primitives-proof-size-hostfunction = { workspace = true }
 [dev-dependencies]
 assert_matches = { workspace = true }
 hex-literal = { workspace = true, default-features = true }
-lazy_static = { workspace = true }
 trie-standardmap = { workspace = true }
 rand = { workspace = true, default-features = true }
 futures = { workspace = true }

cumulus/pallets/parachain-system/src/tests.rs

@@ -27,6 +27,7 @@ use hex_literal::hex;
 use rand::Rng;
 use relay_chain::HrmpChannelId;
 use sp_core::H256;
+use std::sync::OnceLock;
 
 #[test]
 #[should_panic]
@@ -754,31 +755,27 @@ fn message_queue_chain() {
 #[test]
 #[cfg(not(feature = "runtime-benchmarks"))]
 fn receive_dmp() {
-	lazy_static::lazy_static! {
-		static ref MSG: InboundDownwardMessage = InboundDownwardMessage {
-			sent_at: 1,
-			msg: b"down".to_vec(),
-		};
-	}
+	static MSG: OnceLock<InboundDownwardMessage> = OnceLock::new();
+	MSG.get_or_init(|| InboundDownwardMessage { sent_at: 1, msg: b"down".to_vec() });
 
 	BlockTests::new()
 		.with_relay_sproof_builder(|_, relay_block_num, sproof| match relay_block_num {
 			1 => {
 				sproof.dmq_mqc_head =
-					Some(MessageQueueChain::default().extend_downward(&MSG).head());
+					Some(MessageQueueChain::default().extend_downward(MSG.get().unwrap()).head());
 			},
 			_ => unreachable!(),
 		})
 		.with_inherent_data(|_, relay_block_num, data| match relay_block_num {
 			1 => {
-				data.downward_messages.push(MSG.clone());
+				data.downward_messages.push(MSG.get().unwrap().clone());
 			},
 			_ => unreachable!(),
 		})
 		.add(1, || {
 			HANDLED_DMP_MESSAGES.with(|m| {
 				let mut m = m.borrow_mut();
-				assert_eq!(&*m, &[(MSG.msg.clone())]);
+				assert_eq!(&*m, &[(MSG.get().unwrap().msg.clone())]);
 				m.clear();
 			});
 		});

cumulus/xcm/xcm-emulator/Cargo.toml

@@ -13,7 +13,6 @@ workspace = true
 codec = { workspace = true, default-features = true }
 paste = { workspace = true, default-features = true }
 log = { workspace = true }
-lazy_static = { workspace = true }
 impl-trait-for-tuples = { workspace = true }
 array-bytes = { workspace = true }
 

cumulus/xcm/xcm-emulator/src/lib.rs

@@ -18,12 +18,16 @@ extern crate alloc;
 
 pub use array_bytes;
 pub use codec::{Decode, Encode, EncodeLike, MaxEncodedLen};
-pub use lazy_static::lazy_static;
 pub use log;
 pub use paste;
 pub use std::{
-	any::type_name, collections::HashMap, error::Error, fmt, marker::PhantomData, ops::Deref,
-	sync::Mutex,
+	any::type_name,
+	collections::HashMap,
+	error::Error,
+	fmt,
+	marker::PhantomData,
+	ops::Deref,
+	sync::{LazyLock, Mutex},
 };
 
 // Substrate
@@ -443,10 +447,8 @@ macro_rules! __impl_test_ext_for_relay_chain {
 				= $crate::RefCell::new($crate::TestExternalities::new($genesis));
 		}
 
-		$crate::lazy_static! {
-			pub static ref $global_ext: $crate::Mutex<$crate::RefCell<$crate::HashMap<String, $crate::TestExternalities>>>
-				= $crate::Mutex::new($crate::RefCell::new($crate::HashMap::new()));
-		}
+		pub static $global_ext: $crate::LazyLock<$crate::Mutex<$crate::RefCell<$crate::HashMap<String, $crate::TestExternalities>>>>
+			= $crate::LazyLock::new(|| $crate::Mutex::new($crate::RefCell::new($crate::HashMap::new())));
 
 		impl<$network: $crate::Network> $crate::TestExt for $name<$network> {
 			fn build_new_ext(storage: $crate::Storage) -> $crate::TestExternalities {
@@ -478,10 +480,10 @@ macro_rules! __impl_test_ext_for_relay_chain {
 					v.take()
 				});
 
-				// Get TestExternality from lazy_static
+				// Get TestExternality from LazyLock
 				let global_ext_guard = $global_ext.lock().unwrap();
 
-				// Replace TestExternality in lazy_static by TestExternality from thread_local
+				// Replace TestExternality in LazyLock by TestExternality from thread_local
 				global_ext_guard.deref().borrow_mut().insert(id.to_string(), local_ext);
 			}
 
@@ -490,10 +492,10 @@ macro_rules! __impl_test_ext_for_relay_chain {
 
 				let mut global_ext_unlocked = false;
 
-				// Keep the mutex unlocked until TesExternality from lazy_static
+				// Keep the mutex unlocked until TesExternality from LazyLock
 				// has been updated
 				while !global_ext_unlocked {
-					// Get TesExternality from lazy_static
+					// Get TesExternality from LazyLock
 					let global_ext_result = $global_ext.try_lock();
 
 					if let Ok(global_ext_guard) = global_ext_result {
@@ -506,10 +508,10 @@ macro_rules! __impl_test_ext_for_relay_chain {
 					}
 				}
 
-				// Now that we know that lazy_static TestExt has been updated, we lock its mutex
+				// Now that we know that TestExt has been updated, we lock its mutex
 				let mut global_ext_guard = $global_ext.lock().unwrap();
 
-				// and set TesExternality from lazy_static into TesExternality for local_thread
+				// and set TesExternality from LazyLock into TesExternality for local_thread
 				let global_ext = global_ext_guard.deref();
 
 				$local_ext.with(|v| {
@@ -744,10 +746,8 @@ macro_rules! __impl_test_ext_for_parachain {
 				= $crate::RefCell::new($crate::TestExternalities::new($genesis));
 		}
 
-		$crate::lazy_static! {
-			pub static ref $global_ext: $crate::Mutex<$crate::RefCell<$crate::HashMap<String, $crate::TestExternalities>>>
-				= $crate::Mutex::new($crate::RefCell::new($crate::HashMap::new()));
-		}
+		pub static $global_ext: $crate::LazyLock<$crate::Mutex<$crate::RefCell<$crate::HashMap<String, $crate::TestExternalities>>>>
+			= $crate::LazyLock::new(|| $crate::Mutex::new($crate::RefCell::new($crate::HashMap::new())));
 
 		impl<$network: $crate::Network> $crate::TestExt for $name<$network> {
 			fn build_new_ext(storage: $crate::Storage) -> $crate::TestExternalities {
@@ -777,10 +777,10 @@ macro_rules! __impl_test_ext_for_parachain {
 					v.take()
 				});
 
-				// Get TestExternality from lazy_static
+				// Get TestExternality from LazyLock
 				let global_ext_guard = $global_ext.lock().unwrap();
 
-				// Replace TestExternality in lazy_static by TestExternality from thread_local
+				// Replace TestExternality in LazyLock by TestExternality from thread_local
 				global_ext_guard.deref().borrow_mut().insert(id.to_string(), local_ext);
 			}
 
@@ -789,10 +789,10 @@ macro_rules! __impl_test_ext_for_parachain {
 
 				let mut global_ext_unlocked = false;
 
-				// Keep the mutex unlocked until TesExternality from lazy_static
+				// Keep the mutex unlocked until TesExternality from LazyLock
 				// has been updated
 				while !global_ext_unlocked {
-					// Get TesExternality from lazy_static
+					// Get TesExternality from LazyLock
 					let global_ext_result = $global_ext.try_lock();
 
 					if let Ok(global_ext_guard) = global_ext_result {
@@ -805,10 +805,10 @@ macro_rules! __impl_test_ext_for_parachain {
 					}
 				}
 
-				// Now that we know that lazy_static TestExt has been updated, we lock its mutex
+				// Now that we know that TestExt has been updated, we lock its mutex
 				let mut global_ext_guard = $global_ext.lock().unwrap();
 
-				// and set TesExternality from lazy_static into TesExternality for local_thread
+				// and set TesExternality from LazyLock into TesExternality for local_thread
 				let global_ext = global_ext_guard.deref();
 
 				$local_ext.with(|v| {

polkadot/node/jaeger/Cargo.toml

@@ -11,7 +11,6 @@ workspace = true
 
 [dependencies]
 mick-jaeger = { workspace = true }
-lazy_static = { workspace = true }
 parking_lot = { workspace = true, default-features = true }
 polkadot-primitives = { workspace = true, default-features = true }
 polkadot-node-primitives = { workspace = true, default-features = true }

polkadot/node/jaeger/src/lib.rs

@@ -61,11 +61,12 @@ use self::spans::TraceIdentifier;
 use sp_core::traits::SpawnNamed;
 
 use parking_lot::RwLock;
-use std::{result, sync::Arc};
+use std::{
+	result,
+	sync::{Arc, LazyLock},
+};
 
-lazy_static::lazy_static! {
-	static ref INSTANCE: RwLock<Jaeger> = RwLock::new(Jaeger::None);
-}
+static INSTANCE: LazyLock<RwLock<Jaeger>> = LazyLock::new(|| RwLock::new(Jaeger::None));
 
 /// Stateful convenience wrapper around [`mick_jaeger`].
 pub enum Jaeger {

polkadot/node/network/dispute-distribution/Cargo.toml

@@ -38,5 +38,4 @@ sp-tracing = { workspace = true, default-features = true }
 sc-keystore = { workspace = true, default-features = true }
 futures-timer = { workspace = true }
 assert_matches = { workspace = true }
-lazy_static = { workspace = true }
 polkadot-primitives-test-helpers = { workspace = true }