1 files changed, 18 insertions, 0 deletions
diff --git a/alacritty_terminal/src/sync.rs b/alacritty_terminal/src/sync.rs
index 43148a78..848bab62 100644
--- a/alacritty_terminal/src/sync.rs
+++ b/alacritty_terminal/src/sync.rs
@@ -21,6 +21,14 @@ impl<T> FairMutex<T> {
         FairMutex { data: Mutex::new(data), next: Mutex::new(()) }
     }
 
+    /// Acquire a lease to reserve the mutex lock.
+    ///
+    /// This will prevent others from acquiring a terminal lock, but block if anyone else is
+    /// already holding a lease.
+    pub fn lease(&self) -> MutexGuard<'_, ()> {
+        self.next.lock()
+    }
+
     /// Lock the mutex.
     pub fn lock(&self) -> MutexGuard<'_, T> {
         // Must bind to a temporary or the lock will be freed before going
@@ -28,4 +36,14 @@ impl<T> FairMutex<T> {
         let _next = self.next.lock();
         self.data.lock()
     }
+
+    /// Unfairly lock the mutex.
+    pub fn lock_unfair(&self) -> MutexGuard<'_, T> {
+        self.data.lock()
+    }
+
+    /// Unfairly try to lock the mutex.
+    pub fn try_lock_unfair(&self) -> Option<MutexGuard<'_, T>> {
+        self.data.try_lock()
+    }
 }