chore: use thread local node in the parking example

Author: pedromfedricci

Cargo.toml

@@ -51,7 +51,7 @@ required-features = ["barging"]
 
 [[example]]
 name = "parking"
-required-features = ["parking"]
+required-features = ["parking", "thread_local"]
 
 [[example]]
 name = "thread_local"

examples/parking.rs

@@ -6,6 +6,15 @@ use std::thread;
 // `spins::Mutex` spins for a while then parks during contention.
 use mcslock::parking::raw::{spins::Mutex, MutexNode};
 
+// Requires that the `thread_local` feature is enabled.
+mcslock::thread_local_parking_node! {
+    // * Allows multiple static definitions, must be separated with semicolons.
+    // * Visibility is optional (private by default).
+    // * Requires `static` keyword and a UPPER_SNAKE_CASE name.
+    pub static NODE;
+    static UNUSED_NODE;
+}
+
 fn main() {
     const N: usize = 10;
 
@@ -41,7 +50,7 @@ fn main() {
     }
     let _message = rx.recv();
 
-    // A queue node is transparently allocated in the stack.
-    let count = data.lock_then(|data| *data);
+    // A thread local node is borrowed.
+    let count = data.lock_with_local_then(&NODE, |data| *data);
     assert_eq!(count, N);
 }

examples/thread_local.rs

@@ -35,6 +35,7 @@ fn main() {
             // threads to ever fail while holding the lock.
             //
             // Data is exclusively accessed by the guard argument.
+            // A thread local node is borrowed.
             data.lock_with_local_then(&NODE, |data| {
                 *data += 1;
                 if *data == N {
@@ -46,6 +47,7 @@ fn main() {
     }
     let _message = rx.recv();
 
+    // A thread local node is borrowed.
     let count = data.lock_with_local_then(&NODE, |data| *data);
     assert_eq!(count, N);
 }