Make DmabufMapping implement Send/Sync

It is no more unsafe to access this in multiple threads than in one. The caller should assume another process may be mutating the buffer.
Smithay · Dec 9, 2024 · da9cc23 · da9cc23
1 parent 48f5ba4
commit da9cc23
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/backend/allocator/dmabuf.rs b/src/backend/allocator/dmabuf.rs
@@ -434,6 +434,12 @@ impl DmabufMapping {
     }
 }
 
+// SAFETY: The caller is responsible for accessing the data without assuming
+// another process isn't mutating it, regardless of how many threads this is
+// referenced in.
+unsafe impl Send for DmabufMapping {}
+unsafe impl Sync for DmabufMapping {}
+
 impl Drop for DmabufMapping {
     fn drop(&mut self) {
         let _ = unsafe { rustix::mm::munmap(self.ptr, self.len) };