Improve example

examples/make_realtime/main.rs

@@ -1,7 +1,7 @@
 use nix::unistd::gettid;
 use std::thread;
 
-use rtkit_client_rs::{set_current_thread_priority, Error};
+use rtkit_client_rs::{set_current_thread_nice_level, set_current_thread_priority};
 
 fn main() {
     println!("Main tid: {}", gettid());
@@ -14,18 +14,26 @@ fn important_thread() {
     let requested_priority = 40;
     let actual_priority = set_current_thread_priority(Some(requested_priority.try_into().unwrap()));
     match actual_priority {
-        Ok(actual_priority) => println!("Requested priority: {requested_priority}, Actual priority: {}", actual_priority.value()),
-        Err(Error::PermissionDenied) => println!("Permission denied. Do you have polkit rules set up, or otherwise have the necessary permissions?"),
-        Err(e) => println!("Internal zbus error: {e}"),
+        Ok(actual_priority) => println!(
+            "Requested priority: {requested_priority}, Actual priority: {}",
+            actual_priority.value(),
+        ),
+        Err(err) => {
+            eprintln!("Failed to set priority: {}", err);
+        }
     }
 
     let requested_nice_level = -10;
-    let actual_nice_level = rtkit_client_rs::set_current_thread_nice_level(Some(
+    let actual_nice_level = set_current_thread_nice_level(Some(
         requested_nice_level.try_into().unwrap(),
     ));
     match actual_nice_level {
-        Ok(actual_nice_level) => println!("Requested nice level: {requested_nice_level}, Actual nice level: {}", actual_nice_level.value()),
-        Err(Error::PermissionDenied) => println!("Permission denied. Do you have polkit rules set up, or otherwise have the necessary permissions?"),
-        Err(e) => println!("Internal zbus error: {e}"),
+        Ok(actual_nice_level) => println!(
+            "Requested nice level: {requested_nice_level}, Actual nice level: {}",
+            actual_nice_level.value(),
+        ),
+        Err(err) => {
+            eprintln!("Failed to set nice level: {}", err);
+        }
     }
 }