first commit, not pretty

examples/demo.rs

@@ -0,0 +1,83 @@
+use std::thread;
+use std::time::Duration;
+
+fn main() {
+    // Start the telemetry window
+    teleprof::start();
+
+    println!("Teleprof demo running...");
+    println!("Press Space in the profiler window to pause/unpause");
+    println!("Press Escape in the profiler window to quit");
+
+    // Simulate some work
+    for i in 0..1000 {
+        frame_work(i);
+        
+        // Check if paused
+        if teleprof::PAUSE.try_lock().is_err() {
+            println!("Paused!");
+            while teleprof::PAUSE.try_lock().is_err() {
+                thread::sleep(Duration::from_millis(100));
+            }
+            println!("Resumed!");
+        }
+        
+        thread::sleep(Duration::from_millis(16));
+    }
+}
+
+fn frame_work(frame: u32) {
+    teleprof::span!("frame_work");
+    
+    physics_update();
+    render();
+    
+    if frame % 10 == 0 {
+        occasional_task();
+    }
+}
+
+fn physics_update() {
+    teleprof::span!("physics_update");
+    
+    // Spawn some worker threads
+    let handles: Vec<_> = (0..3).map(|i| {
+        thread::spawn(move || {
+            physics_worker(i);
+        })
+    }).collect();
+    
+    for handle in handles {
+        handle.join().ok();
+    }
+}
+
+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));
+}
+
+fn render() {
+    teleprof::span!("render");
+    
+    build_command_buffer();
+    submit_to_gpu();
+}
+
+fn build_command_buffer() {
+    teleprof::span!("build_command_buffer");
+    thread::sleep(Duration::from_millis(3));
+}
+
+fn submit_to_gpu() {
+    teleprof::span!("submit_to_gpu");
+    thread::sleep(Duration::from_millis(2));
+}
+
+fn occasional_task() {
+    teleprof::span!("occasional_task");
+    thread::sleep(Duration::from_millis(10));
+}