feat: add crossbeam_n_parking_lot

__concurrent/crossbeam_n_parking_lot/Cargo.lock

@@ -0,0 +1,203 @@
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__concurrent/crossbeam_n_parking_lot/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "crossbeam_n_parking_lot"
+version = "0.1.0"
+authors = ["Hatter Jiang <jht5945@gmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+crossbeam = "0.8.0"
+crossbeam-channel = "0.5.0"
+parking_lot = "0.11.1"
+lock_api = "0.4.2"

__concurrent/crossbeam_n_parking_lot/src/main.rs

@@ -0,0 +1,16 @@
+use crossbeam_channel::unbounded;
+// use lock_api::Mutex;
+// use std::sync::Arc;
+use std::thread;
+
+fn main() {
+    // let lock = Arc::new(Mutex::new::<RawSpinlock, i32>(0_i32));
+    let (s, r) = unbounded::<i32>();
+
+    thread::spawn(move || {
+        s.send(1).unwrap();
+    });
+
+    let x = r.recv().unwrap();
+    println!("Received: {}", x);
+}