mark sync::Barrier as unstable

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>

Cargo.toml

@@ -21,8 +21,8 @@ features = ["docs"]
 rustdoc-args = ["--cfg", "feature=\"docs\""]
 
 [features]
-docs = []
+docs = ["broadcaster"]
-unstable = []
+unstable = ["broadcaster"]
 
 [dependencies]
 async-macros = "1.0.0"
@@ -42,7 +42,7 @@ num_cpus = "1.10.1"
 pin-utils = "0.1.0-alpha.4"
 slab = "0.4.2"
 kv-log-macro = "1.0.4"
-broadcaster = "0.2.4"
+broadcaster = { version = "0.2.4", optional = true }
 
 [dev-dependencies]
 femme = "1.2.0"

src/sync/barrier.rs

@@ -32,6 +32,7 @@ use crate::sync::Mutex;
 /// # });
 /// # }
 /// ```
+#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
 #[derive(Debug)]
 pub struct Barrier {
     state: Mutex<BarrierState>,
@@ -60,6 +61,7 @@ struct BarrierState {
 /// let barrier = Barrier::new(1);
 /// let barrier_wait_result = barrier.wait();
 /// ```
+#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
 #[derive(Debug, Clone)]
 pub struct BarrierWaitResult(bool);
 

src/sync/mod.rs

@@ -32,10 +32,14 @@
 #[doc(inline)]
 pub use std::sync::{Arc, Weak};
 
+#[cfg(any(feature = "unstable", feature = "docs"))]
 pub use barrier::{Barrier, BarrierWaitResult};
+
 pub use mutex::{Mutex, MutexGuard};
 pub use rwlock::{RwLock, RwLockReadGuard, RwLockWriteGuard};
 
+#[cfg(any(feature = "unstable", feature = "docs"))]
+#[cfg_attr(feature = "docs", doc(cfg(unstable)))]
 mod barrier;
 mod mutex;
 mod rwlock;