moonbeam_service/lazy_loading/lock.rs
1// Copyright 2024 Moonbeam foundation
2// This file is part of Moonbeam.
3
4// Moonbeam is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8
9// Moonbeam is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License
15// along with Moonbeam. If not, see <http://www.gnu.org/licenses/>.
16
17use parking_lot::{RwLock, RwLockReadGuard, RwLockWriteGuard};
18
19#[derive(Debug, Default)]
20pub struct ReadWriteLock<T: Clone>(RwLock<T>);
21
22impl<T: Clone> ReadWriteLock<T> {
23 pub fn new(item: T) -> Self {
24 ReadWriteLock(RwLock::new(item))
25 }
26
27 pub fn read(&self) -> RwLockReadGuard<T> {
28 self.0.read()
29 }
30
31 pub fn write(&self) -> RwLockWriteGuard<T> {
32 self.0.write()
33 }
34}