From 41d558a5f40bbea865f2ba0899b34baed9c1c0d1 Mon Sep 17 00:00:00 2001
From: Grant Miller <GrantM11235@gmail.com>
Date: Mon, 20 Mar 2023 16:20:51 -0500
Subject: executor: Allow TaskStorage to auto-implement `Sync`

---
 embassy-executor/src/raw/util.rs | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'embassy-executor/src/raw/util.rs')

diff --git a/embassy-executor/src/raw/util.rs b/embassy-executor/src/raw/util.rs
index 2b1f6b6f3..e2e8f4df8 100644
--- a/embassy-executor/src/raw/util.rs
+++ b/embassy-executor/src/raw/util.rs
@@ -25,3 +25,32 @@ impl<T> UninitCell<T> {
         ptr::drop_in_place(self.as_mut_ptr())
     }
 }
+
+unsafe impl<T> Sync for UninitCell<T> {}
+
+#[repr(transparent)]
+pub struct SyncUnsafeCell<T> {
+    value: UnsafeCell<T>,
+}
+
+unsafe impl<T: Sync> Sync for SyncUnsafeCell<T> {}
+
+impl<T> SyncUnsafeCell<T> {
+    #[inline]
+    pub const fn new(value: T) -> Self {
+        Self {
+            value: UnsafeCell::new(value),
+        }
+    }
+
+    pub unsafe fn set(&self, value: T) {
+        *self.value.get() = value;
+    }
+
+    pub unsafe fn get(&self) -> T
+    where
+        T: Copy,
+    {
+        *self.value.get()
+    }
+}
-- 
cgit