Use parking_lot

Author: kdy1

Cargo.toml

@@ -27,6 +27,7 @@ lazy_static = "1"
 serde = { version = "1", optional = true }
 phf_shared = "0.8"
 new_debug_unreachable = "1.0"
+parking_lot = "0.11"
 
 [[test]]
 name = "small-stack"

src/atom.rs

@@ -201,7 +201,7 @@ impl<'a, Static: StaticAtomSet> From<Cow<'a, str>> for Atom<Static> {
                 }
             } else {
                 let ptr: std::ptr::NonNull<Entry> =
-                    DYNAMIC_SET.lock().unwrap().insert(string_to_add, hash.g);
+                    DYNAMIC_SET.lock().insert(string_to_add, hash.g);
                 let data = ptr.as_ptr() as u64;
                 debug_assert!(0 == data & TAG_MASK);
                 Atom {
@@ -239,7 +239,6 @@ impl<Static> Drop for Atom<Static> {
         fn drop_slow<Static>(this: &mut Atom<Static>) {
             DYNAMIC_SET
                 .lock()
-                .unwrap()
                 .remove(this.unsafe_data.get() as *mut Entry);
         }
     }

src/dynamic_set.rs

@@ -8,12 +8,12 @@
 // except according to those terms.
 
 use lazy_static::lazy_static;
+use parking_lot::Mutex;
 use std::borrow::Cow;
 use std::mem;
 use std::ptr::NonNull;
 use std::sync::atomic::AtomicIsize;
 use std::sync::atomic::Ordering::SeqCst;
-use std::sync::Mutex;
 
 const NB_BUCKETS: usize = 1 << 12; // 4096
 const BUCKET_MASK: u32 = (1 << 12) - 1;