Rename dir: compiler -> crates

crates/erg_common/spawn.rs

@@ -0,0 +1,35 @@
+#[cfg(all(unix, feature = "debug"))]
+pub use backtrace_on_stack_overflow;
+use std::thread;
+
+#[macro_export]
+macro_rules! enable_overflow_stacktrace {
+    () => {
+        #[cfg(all(unix, feature = "debug"))]
+        unsafe {
+            $crate::spawn::backtrace_on_stack_overflow::enable()
+        };
+    };
+}
+
+/// Execute a function in a new thread on Windows, otherwise just run it.
+///
+/// Windows has a smaller default stack size than other OSs, which may cause a stack overflow, especially in the parsing process.
+pub fn exec_new_thread<F, T>(run: F) -> T
+where
+    F: FnOnce() -> T + Send + 'static,
+    T: Send + 'static,
+{
+    enable_overflow_stacktrace!();
+    if cfg!(windows) || cfg!(feature = "large_thread") {
+        const STACK_SIZE: usize = 4 * 1024 * 1024;
+        let child = thread::Builder::new()
+            .stack_size(STACK_SIZE)
+            .spawn(run)
+            .unwrap();
+        // Wait for thread to join
+        child.join().unwrap()
+    } else {
+        run()
+    }
+}