This method is rarely useful in QEMU due to the pervasiveness of
shared references, but add it for when a &mut BqlRefCell<> is used.
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
rust/bql/src/cell.rs | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/rust/bql/src/cell.rs b/rust/bql/src/cell.rs
index 24ab294b60d..8a0c8c14ad4 100644
--- a/rust/bql/src/cell.rs
+++ b/rust/bql/src/cell.rs
@@ -580,6 +580,25 @@ pub fn borrow_mut(&self) -> BqlRefMut<'_, T> {
}
}
+ /// Returns a mutable reference to the underlying data in this cell,
+ /// while the owner already has a mutable reference to the cell.
+ ///
+ /// # Examples
+ ///
+ /// ```
+ /// use bql::BqlRefCell;
+ ///
+ /// let mut c = BqlRefCell::new(5);
+ ///
+ /// *c.get_mut() = 10;
+ /// ```
+ #[inline]
+ pub const fn get_mut(&mut self) -> &mut T {
+ // SAFETY: there cannot be any outstanding borrow,
+ // since `self` is mutably owned.
+ unsafe { &mut *self.as_ptr() }
+ }
+
/// Returns a raw pointer to the underlying data in this cell.
///
/// # Examples
--
2.51.0
