Implement Send/Sync for Mat, Ptr and Tuple

Author: twistedfall

src/manual/core/mat.rs

@@ -764,6 +764,8 @@ impl<T: MatTrait + ?Sized> MatTraitManual for T {}
 input_output_array! { Mat, from_mat, from_mat_mut }
 input_output_array_vector! { Mat, from_mat_vec, from_mat_vec_mut }
 
+unsafe impl Sync for Mat {}
+
 impl fmt::Debug for Mat {
 	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 		let typ = self.typ();

src/manual/core/ptr.rs

@@ -79,3 +79,7 @@ where
 		unsafe { self.extern_delete() }
 	}
 }
+
+unsafe impl<T: Send> Send for Ptr<T> where Self: PtrExtern {}
+
+unsafe impl<T: Sync> Sync for Ptr<T> where Self: PtrExtern {}

src/manual/core/tuple.rs

@@ -96,3 +96,7 @@ macro_rules! tuple_extern {
 		}
 	};
 }
+
+unsafe impl<T: Send> Send for Tuple<T> where Self: TupleExtern {}
+
+unsafe impl<T: Sync> Sync for Tuple<T> where Self: TupleExtern {}

tests/mat.rs

@@ -1,5 +1,5 @@
 use std::ffi::c_void;
-use std::mem;
+use std::{mem, thread};
 
 use matches::assert_matches;
 
@@ -1217,3 +1217,25 @@ fn mat_reshape() -> Result<()> {
 
 	Ok(())
 }
+
+#[test]
+fn mat_send_sync() -> Result<()> {
+	{
+		let m = Mat::new_rows_cols_with_default(3, 3, u8::opencv_type(), 123.into()).unwrap();
+		thread::spawn(move || assert_eq!(123, *m.at::<u8>(1).unwrap()))
+			.join()
+			.unwrap();
+	}
+
+	{
+		let mut m = Mat::new_rows_cols_with_default(3, 3, u8::opencv_type(), 123.into()).unwrap();
+		thread::scope(|s| {
+			s.spawn(|| {
+				*m.at_2d_mut::<u8>(1, 1).unwrap() = 10;
+			});
+		});
+		assert_eq!(10, *m.at_2d::<u8>(1, 1).unwrap());
+	}
+
+	Ok(())
+}