1 #![allow(dead_code)] // stack_guard isn't used right now on all platforms
3 use crate::cell::RefCell;
4 use crate::sys::thread::guard::Guard;
5 use crate::thread::Thread;
8 stack_guard: Option<Guard>,
12 thread_local! { static THREAD_INFO: RefCell<Option<ThreadInfo>> = RefCell::new(None) }
15 fn with<R, F>(f: F) -> Option<R>
17 F: FnOnce(&mut ThreadInfo) -> R,
21 if c.borrow().is_none() {
23 Some(ThreadInfo { stack_guard: None, thread: Thread::new(None) })
25 f(c.borrow_mut().as_mut().unwrap())
31 pub fn current_thread() -> Option<Thread> {
32 ThreadInfo::with(|info| info.thread.clone())
35 pub fn stack_guard() -> Option<Guard> {
36 ThreadInfo::with(|info| info.stack_guard.clone()).and_then(|o| o)
39 pub fn set(stack_guard: Option<Guard>, thread: Thread) {
40 THREAD_INFO.with(|c| assert!(c.borrow().is_none()));
41 THREAD_INFO.with(move |c| *c.borrow_mut() = Some(ThreadInfo { stack_guard, thread }));
44 pub fn reset_guard(stack_guard: Option<Guard>) {
45 THREAD_INFO.with(move |c| c.borrow_mut().as_mut().unwrap().stack_guard = stack_guard);