Merge pull request #1572 from Roguelazer/issue-1496

Implement serialization and deserialization for std::sync::atomic types

serde/build.rs

@@ -68,6 +68,10 @@ fn main() {
     if minor >= 28 {
         println!("cargo:rustc-cfg=num_nonzero");
     }
+
+    if minor >= 34 {
+        println!("cargo:rustc-cfg=std_integer_atomics");
+    }
 }
 
 fn rustc_minor_version() -> Option<u32> {

serde/src/de/impls.rs

@@ -2543,3 +2543,56 @@ where
         Deserialize::deserialize(deserializer).map(Wrapping)
     }
 }
+
+#[cfg(all(feature="std", std_integer_atomics))]
+use std::sync::atomic;
+
+
+#[cfg(all(feature="std", std_integer_atomics))]
+macro_rules! atomic_impl {
+    ($ty:path, $primitive:ident) => {
+        impl<'de> Deserialize<'de> for $ty
+        {
+            #[inline]
+            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+                where D: Deserializer<'de>
+            {
+                let val = $primitive::deserialize(deserializer)?;
+                Ok(Self::new(val))
+            }
+        }
+    }
+}
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicBool, bool);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI8, i8);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI16, i16);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI32, i32);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI64, i64);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicIsize, isize);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU8, u8);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU16, u16);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU32, u32);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU64, u64);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicUsize, usize);

serde/src/ser/impls.rs

@@ -839,3 +839,55 @@ where
         self.0.serialize(serializer)
     }
 }
+
+////////////////////////////////////////////////////////////////////////////////
+#[cfg(all(feature="std", std_integer_atomics))]
+use std::sync::atomic;
+
+#[cfg(all(feature="std", std_integer_atomics))]
+macro_rules! atomic_impl {
+    ($ty:path, $method:ident $($cast:tt)*) => {
+        impl Serialize for $ty {
+            #[inline]
+            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+            where
+                S: Serializer,
+            {
+                serializer.$method(self.load(atomic::Ordering::SeqCst) $($cast)*)
+            }
+        }
+    }
+}
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicBool, serialize_bool);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI8, serialize_i8);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI16, serialize_i16);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI32, serialize_i32);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicI64, serialize_i64);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicIsize, serialize_i64 as i64);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU8, serialize_u8);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU16, serialize_u16);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU32, serialize_u32);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicU64, serialize_u64);
+
+#[cfg(all(feature="std", std_integer_atomics))]
+atomic_impl!(atomic::AtomicUsize, serialize_u64 as u64);