From: Viktor Tigerström <11711198+ViktorTigerstrom@users.noreply.github.com>
Date: Thu, 8 Dec 2022 21:40:54 +0000 (+0100)
Subject: Add `try_write` function to `FairRwLock`
X-Git-Tag: v0.0.114-beta~67^2~14
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=4207eab59db92160c0ee274dd16c8b3a79aacc6c;p=rust-lightning

Add `try_write` function to `FairRwLock`
---

diff --git a/lightning/src/util/fairrwlock.rs b/lightning/src/util/fairrwlock.rs
index c9b3866be..5715a8cf6 100644
--- a/lightning/src/util/fairrwlock.rs
+++ b/lightning/src/util/fairrwlock.rs
@@ -1,4 +1,4 @@
-use std::sync::{LockResult, RwLock, RwLockReadGuard, RwLockWriteGuard};
+use std::sync::{LockResult, RwLock, RwLockReadGuard, RwLockWriteGuard, TryLockResult};
 use std::sync::atomic::{AtomicUsize, Ordering};
 
 /// Rust libstd's RwLock does not provide any fairness guarantees (and, in fact, when used on
@@ -43,4 +43,8 @@ impl<T> FairRwLock<T> {
 		// codebase.
 		self.lock.read()
 	}
+
+	pub fn try_write(&self) -> TryLockResult<RwLockWriteGuard<'_, T>> {
+		self.lock.try_write()
+	}
 }