better but still not workable

examples/demo.rs

@@ -1,5 +1,6 @@
 use std::thread;
 use std::time::Duration;
+use teleprof::instrument;
 
 fn main() {
     // Start the telemetry window
@@ -7,7 +8,9 @@ fn main() {
 
     println!("Teleprof demo running...");
     println!("Press Space in the profiler window to pause/unpause");
+    println!("Mouse wheel to zoom, drag to pan");
     println!("Press Escape in the profiler window to quit");
+    println!();
 
     // Simulate some work
     for i in 0..1000 {
@@ -26,9 +29,8 @@ fn main() {
     }
 }
 
+#[instrument]
 fn frame_work(frame: u32) {
-    teleprof::span!("frame_work");
-    
     physics_update();
     render();
     
@@ -37,9 +39,8 @@ fn frame_work(frame: u32) {
     }
 }
 
+#[instrument]
 fn physics_update() {
-    teleprof::span!("physics_update");
-    
     // Spawn some worker threads
     let handles: Vec<_> = (0..3).map(|i| {
         thread::spawn(move || {
@@ -52,32 +53,30 @@ fn physics_update() {
     }
 }
 
+#[instrument]
 fn physics_worker(id: u32) {
-    teleprof::span!("physics_worker");
-    
     // Simulate work
     let work_ms = 5 + (id * 2);
     thread::sleep(Duration::from_millis(work_ms as u64));
 }
 
+#[instrument]
 fn render() {
-    teleprof::span!("render");
-    
     build_command_buffer();
     submit_to_gpu();
 }
 
+#[instrument]
 fn build_command_buffer() {
-    teleprof::span!("build_command_buffer");
     thread::sleep(Duration::from_millis(3));
 }
 
+#[instrument]
 fn submit_to_gpu() {
-    teleprof::span!("submit_to_gpu");
     thread::sleep(Duration::from_millis(2));
 }
 
+#[instrument]
 fn occasional_task() {
-    teleprof::span!("occasional_task");
     thread::sleep(Duration::from_millis(10));
-}
+}