1 files changed, 0 insertions, 69 deletions
diff --git a/src/libstd/sys/unsupported/rwlock.rs b/src/libstd/sys/unsupported/rwlock.rs
deleted file mode 100644
index d37f34ac935..00000000000
--- a/src/libstd/sys/unsupported/rwlock.rs
+++ /dev/null
@@ -1,69 +0,0 @@
-use crate::cell::UnsafeCell;
-
-pub struct RWLock {
-    mode: UnsafeCell<isize>,
-}
-
-unsafe impl Send for RWLock {}
-unsafe impl Sync for RWLock {} // no threads on this platform
-
-impl RWLock {
-    pub const fn new() -> RWLock {
-        RWLock { mode: UnsafeCell::new(0) }
-    }
-
-    #[inline]
-    pub unsafe fn read(&self) {
-        let mode = self.mode.get();
-        if *mode >= 0 {
-            *mode += 1;
-        } else {
-            rtabort!("rwlock locked for writing");
-        }
-    }
-
-    #[inline]
-    pub unsafe fn try_read(&self) -> bool {
-        let mode = self.mode.get();
-        if *mode >= 0 {
-            *mode += 1;
-            true
-        } else {
-            false
-        }
-    }
-
-    #[inline]
-    pub unsafe fn write(&self) {
-        let mode = self.mode.get();
-        if *mode == 0 {
-            *mode = -1;
-        } else {
-            rtabort!("rwlock locked for reading")
-        }
-    }
-
-    #[inline]
-    pub unsafe fn try_write(&self) -> bool {
-        let mode = self.mode.get();
-        if *mode == 0 {
-            *mode = -1;
-            true
-        } else {
-            false
-        }
-    }
-
-    #[inline]
-    pub unsafe fn read_unlock(&self) {
-        *self.mode.get() -= 1;
-    }
-
-    #[inline]
-    pub unsafe fn write_unlock(&self) {
-        *self.mode.get() += 1;
-    }
-
-    #[inline]
-    pub unsafe fn destroy(&self) {}
-}