sync: move into `tokio` crate (#1705)

A step towards collapsing Tokio sub crates into a single `tokio`
crate (#1318).

The sync implementation is now provided by the main `tokio` crate.
Functionality can be opted out of by using the various net related
feature flags.

1 files changed, 0 insertions, 38 deletions

diff --git a/tokio-sync/src/loom.rs b/tokio-sync/src/loom.rs
deleted file mode 100644
index 564efc4f..00000000
--- a/tokio-sync/src/loom.rs
+++ /dev/null
@@ -1,38 +0,0 @@
-pub(crate) mod future {
-    pub(crate) use crate::task::AtomicWaker;
-}
-
-pub(crate) mod sync {
-    pub(crate) use std::sync::atomic;
-    pub(crate) use std::sync::Arc;
-
-    use std::cell::UnsafeCell;
-
-    pub(crate) struct CausalCell<T>(UnsafeCell<T>);
-
-    impl<T> CausalCell<T> {
-        pub(crate) fn new(data: T) -> CausalCell<T> {
-            CausalCell(UnsafeCell::new(data))
-        }
-
-        pub(crate) fn with<F, R>(&self, f: F) -> R
-        where
-            F: FnOnce(*const T) -> R,
-        {
-            f(self.0.get())
-        }
-
-        pub(crate) fn with_mut<F, R>(&self, f: F) -> R
-        where
-            F: FnOnce(*mut T) -> R,
-        {
-            f(self.0.get())
-        }
-    }
-}
-
-pub(crate) mod thread {
-    pub(crate) fn yield_now() {
-        ::std::sync::atomic::spin_loop_hint();
-    }
-}