Auto merge of #98457 - japaric:gh98378, r=m-ou-se

[rust.git] / library / std / src / sys_common / rwlock.rs

diff --git a/library/std/src/sys_common/rwlock.rs b/library/std/src/sys_common/rwlock.rs
index 34e9a91e87485e21afd354d3f79be907dedcdbaf..042981dac60b4eb7028b1d3f546fafdc1902e0f2 100644 (file)
--- a/library/std/src/sys_common/rwlock.rs
+++ b/library/std/src/sys_common/rwlock.rs
@@ -1,65 +1,5 @@
 use crate::sys::locks as imp;
 
-/// An OS-based reader-writer lock, meant for use in static variables.
-///
-/// This rwlock does not implement poisoning.
-///
-/// This rwlock has a const constructor ([`StaticRwLock::new`]), does not
-/// implement `Drop` to cleanup resources.
-pub struct StaticRwLock(imp::RwLock);
-
-impl StaticRwLock {
-    /// Creates a new rwlock for use.
-    #[inline]
-    pub const fn new() -> Self {
-        Self(imp::RwLock::new())
-    }
-
-    /// Acquires shared access to the underlying lock, blocking the current
-    /// thread to do so.
-    ///
-    /// The lock is automatically unlocked when the returned guard is dropped.
-    #[inline]
-    pub fn read(&'static self) -> StaticRwLockReadGuard {
-        unsafe { self.0.read() };
-        StaticRwLockReadGuard(&self.0)
-    }
-
-    /// Acquires write access to the underlying lock, blocking the current thread
-    /// to do so.
-    ///
-    /// The lock is automatically unlocked when the returned guard is dropped.
-    #[inline]
-    pub fn write(&'static self) -> StaticRwLockWriteGuard {
-        unsafe { self.0.write() };
-        StaticRwLockWriteGuard(&self.0)
-    }
-}
-
-#[must_use]
-pub struct StaticRwLockReadGuard(&'static imp::RwLock);
-
-impl Drop for StaticRwLockReadGuard {
-    #[inline]
-    fn drop(&mut self) {
-        unsafe {
-            self.0.read_unlock();
-        }
-    }
-}
-
-#[must_use]
-pub struct StaticRwLockWriteGuard(&'static imp::RwLock);
-
-impl Drop for StaticRwLockWriteGuard {
-    #[inline]
-    fn drop(&mut self) {
-        unsafe {
-            self.0.write_unlock();
-        }
-    }
-}
-
 /// An OS-based reader-writer lock.
 ///
 /// This rwlock cleans up its resources in its `Drop` implementation and may