Replace `remutex` with `parking_lot`'s `ReentrantMutex` (#31817)

Many things in Servo depend on `parking_lot`, so we can replace our
homegrown remutex with `parking_lot`'s version.

Fixes #12641.

1 files changed, 0 insertions, 92 deletions

diff --git a/components/remutex/tests/smoke.rs b/components/remutex/tests/smoke.rs
deleted file mode 100644
index 6d253e48501..00000000000
--- a/components/remutex/tests/smoke.rs
+++ /dev/null
@@ -1,92 +0,0 @@
-// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// These tests came from https://github.com/rust-lang/rust/blob/master/src/libstd/sys/common/remutex.rs
-
-use std::cell::RefCell;
-use std::sync::Arc;
-use std::thread;
-
-use servo_remutex::{ReentrantMutex, ReentrantMutexGuard};
-
-#[test]
-fn smoke() {
-    let m = ReentrantMutex::new(());
-    {
-        let a = m.lock().unwrap();
-        {
-            let b = m.lock().unwrap();
-            {
-                let c = m.lock().unwrap();
-                assert_eq!(*c, ());
-            }
-            assert_eq!(*b, ());
-        }
-        assert_eq!(*a, ());
-    }
-}
-
-#[test]
-fn is_mutex() {
-    let m = Arc::new(ReentrantMutex::new(RefCell::new(0)));
-    let m2 = m.clone();
-    let lock = m.lock().unwrap();
-    let child = thread::spawn(move || {
-        let lock = m2.lock().unwrap();
-        assert_eq!(*lock.borrow(), 4950);
-    });
-    for i in 0..100 {
-        let lock = m.lock().unwrap();
-        *lock.borrow_mut() += i;
-    }
-    drop(lock);
-    child.join().unwrap();
-}
-
-#[test]
-fn trylock_works() {
-    let m = Arc::new(ReentrantMutex::new(()));
-    let m2 = m.clone();
-    let _lock = m.try_lock().unwrap();
-    let _lock2 = m.try_lock().unwrap();
-    thread::spawn(move || {
-        let lock = m2.try_lock();
-        assert!(lock.is_err());
-    })
-    .join()
-    .unwrap();
-    let _lock3 = m.try_lock().unwrap();
-}
-
-pub struct Answer<'a>(pub ReentrantMutexGuard<'a, RefCell<u32>>);
-impl<'a> Drop for Answer<'a> {
-    fn drop(&mut self) {
-        *self.0.borrow_mut() = 42;
-    }
-}
-
-#[test]
-fn poison_works() {
-    let m = Arc::new(ReentrantMutex::new(RefCell::new(0)));
-    let mc = m.clone();
-    let result = thread::spawn(move || {
-        let lock = mc.lock().unwrap();
-        *lock.borrow_mut() = 1;
-        let lock2 = mc.lock().unwrap();
-        *lock.borrow_mut() = 2;
-        let _answer = Answer(lock2);
-        println!("Intentionally panicking.");
-        panic!("What the answer to my lifetimes dilemma is?");
-    })
-    .join();
-    assert!(result.is_err());
-    let r = m.lock().err().unwrap().into_inner();
-    assert_eq!(*r.borrow(), 42);
-}