1 files changed, 0 insertions, 101 deletions
diff --git a/src/libstd/sys_common/mutex.rs b/src/libstd/sys_common/mutex.rs
deleted file mode 100644
index e66d8994147..00000000000
--- a/src/libstd/sys_common/mutex.rs
+++ /dev/null
@@ -1,101 +0,0 @@
-use crate::sys::mutex as imp;
-
-/// An OS-based mutual exclusion lock.
-///
-/// This is the thinnest cross-platform wrapper around OS mutexes. All usage of
-/// this mutex is unsafe and it is recommended to instead use the safe wrapper
-/// at the top level of the crate instead of this type.
-pub struct Mutex(imp::Mutex);
-
-unsafe impl Sync for Mutex {}
-
-impl Mutex {
-    /// Creates a new mutex for use.
-    ///
-    /// Behavior is undefined if the mutex is moved after it is
-    /// first used with any of the functions below.
-    /// Also, until `init` is called, behavior is undefined if this
-    /// mutex is ever used reentrantly, i.e., `raw_lock` or `try_lock`
-    /// are called by the thread currently holding the lock.
-    #[rustc_const_stable(feature = "const_sys_mutex_new", since = "1.0.0")]
-    pub const fn new() -> Mutex {
-        Mutex(imp::Mutex::new())
-    }
-
-    /// Prepare the mutex for use.
-    ///
-    /// This should be called once the mutex is at a stable memory address.
-    /// If called, this must be the very first thing that happens to the mutex.
-    /// Calling it in parallel with or after any operation (including another
-    /// `init()`) is undefined behavior.
-    #[inline]
-    pub unsafe fn init(&mut self) {
-        self.0.init()
-    }
-
-    /// Locks the mutex blocking the current thread until it is available.
-    ///
-    /// Behavior is undefined if the mutex has been moved between this and any
-    /// previous function call.
-    #[inline]
-    pub unsafe fn raw_lock(&self) {
-        self.0.lock()
-    }
-
-    /// Calls raw_lock() and then returns an RAII guard to guarantee the mutex
-    /// will be unlocked.
-    #[inline]
-    pub unsafe fn lock(&self) -> MutexGuard<'_> {
-        self.raw_lock();
-        MutexGuard(&self.0)
-    }
-
-    /// Attempts to lock the mutex without blocking, returning whether it was
-    /// successfully acquired or not.
-    ///
-    /// Behavior is undefined if the mutex has been moved between this and any
-    /// previous function call.
-    #[inline]
-    pub unsafe fn try_lock(&self) -> bool {
-        self.0.try_lock()
-    }
-
-    /// Unlocks the mutex.
-    ///
-    /// Behavior is undefined if the current thread does not actually hold the
-    /// mutex.
-    ///
-    /// Consider switching from the pair of raw_lock() and raw_unlock() to
-    /// lock() whenever possible.
-    #[inline]
-    pub unsafe fn raw_unlock(&self) {
-        self.0.unlock()
-    }
-
-    /// Deallocates all resources associated with this mutex.
-    ///
-    /// Behavior is undefined if there are current or will be future users of
-    /// this mutex.
-    #[inline]
-    pub unsafe fn destroy(&self) {
-        self.0.destroy()
-    }
-}
-
-// not meant to be exported to the outside world, just the containing module
-pub fn raw(mutex: &Mutex) -> &imp::Mutex {
-    &mutex.0
-}
-
-#[must_use]
-/// A simple RAII utility for the above Mutex without the poisoning semantics.
-pub struct MutexGuard<'a>(&'a imp::Mutex);
-
-impl Drop for MutexGuard<'_> {
-    #[inline]
-    fn drop(&mut self) {
-        unsafe {
-            self.0.unlock();
-        }
-    }
-}