feat: add runtime

src/util_runtime.rs

@@ -0,0 +1,24 @@
+use std::sync::Mutex;
+use crate::util_msg::MessageType;
+
+lazy_static! {
+    static ref EXIT_CALLBACK: Mutex<Vec<Box<dyn Fn() -> () + Send + 'static>>> = Mutex::new(vec![]);
+}
+
+pub fn register_callback<F>(f: F) where F: Fn() -> () + Send + 'static {
+    let mut exit_callbacks = EXIT_CALLBACK.lock().unwrap();
+    exit_callbacks.push(Box::new(f));
+}
+
+pub fn invoke_callbacks() {
+    let mut exit_callbacks = EXIT_CALLBACK.lock().unwrap();
+    let total = exit_callbacks.len();
+    let mut index = 0;
+    while exit_callbacks.len() > 0 {
+        crate::util_msg::when(MessageType::DEBUG, || {
+            crate::util_msg::print_debug(&format!("Running exit callbacks: {} of {}", index, total));
+        });
+        exit_callbacks.remove(0)();
+        index += 1;
+    }
+}