fix lint and fmt

Author: elast0ny

examples/mutex.rs

@@ -58,15 +58,14 @@ fn increment_value(shmem_flink: &str, thread_num: usize) {
 
     let mut raw_ptr = shmem.as_ptr();
     let is_init: &mut AtomicU8;
-    let mutex: Box<dyn LockImpl>;
 
     unsafe {
         is_init = &mut *(raw_ptr as *mut u8 as *mut AtomicU8);
         raw_ptr = raw_ptr.add(8);
     };
 
     // Initialize or wait for initialized mutex
-    if shmem.is_owner() {
+    let mutex = if shmem.is_owner() {
         is_init.store(0, Ordering::Relaxed);
         // Initialize the mutex
         let (lock, _bytes_used) = unsafe {
@@ -77,7 +76,7 @@ fn increment_value(shmem_flink: &str, thread_num: usize) {
             .unwrap()
         };
         is_init.store(1, Ordering::Relaxed);
-        mutex = lock;
+        lock
     } else {
         // wait until mutex is initialized
         while is_init.load(Ordering::Relaxed) != 1 {}
@@ -89,8 +88,8 @@ fn increment_value(shmem_flink: &str, thread_num: usize) {
             )
             .unwrap()
         };
-        mutex = lock;
-    }
+        lock
+    };
 
     // Loop until mutex data reaches 10
     loop {

src/unix.rs

@@ -148,7 +148,11 @@ pub fn create_mapping(unique_id: &str, map_size: usize) -> Result<MapData, Shmem
 }
 
 /// Opens an existing mapping specified by its uid
-pub fn open_mapping(unique_id: &str, _map_size: usize, _ext: &ShmemConfExt) -> Result<MapData, ShmemError> {
+pub fn open_mapping(
+    unique_id: &str,
+    _map_size: usize,
+    _ext: &ShmemConfExt,
+) -> Result<MapData, ShmemError> {
     //Open shared memory
     debug!("Openning persistent mapping at {}", unique_id);
     let shmem_fd = match shm_open(