diff options
Diffstat (limited to 'library/std/src/sys_common/thread_info.rs')
| -rw-r--r-- | library/std/src/sys_common/thread_info.rs | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/library/std/src/sys_common/thread_info.rs b/library/std/src/sys_common/thread_info.rs deleted file mode 100644 index ec1428ea40e..00000000000 --- a/library/std/src/sys_common/thread_info.rs +++ /dev/null @@ -1,53 +0,0 @@ -#![allow(dead_code)] // stack_guard isn't used right now on all platforms - -use crate::cell::OnceCell; -use crate::sys; -use crate::sys::thread::guard::Guard; -use crate::thread::Thread; - -struct ThreadInfo { - stack_guard: OnceCell<Guard>, - thread: OnceCell<Thread>, -} - -thread_local! { - static THREAD_INFO: ThreadInfo = const { ThreadInfo { - stack_guard: OnceCell::new(), - thread: OnceCell::new() - } }; -} - -impl ThreadInfo { - fn with<R, F>(f: F) -> Option<R> - where - F: FnOnce(&Thread, &OnceCell<Guard>) -> R, - { - THREAD_INFO - .try_with(move |thread_info| { - let thread = - thread_info.thread.get_or_init(|| Thread::new(sys::thread::Thread::get_name())); - f(thread, &thread_info.stack_guard) - }) - .ok() - } -} - -pub fn current_thread() -> Option<Thread> { - ThreadInfo::with(|thread, _| thread.clone()) -} - -pub fn stack_guard() -> Option<Guard> { - ThreadInfo::with(|_, guard| guard.get().cloned()).flatten() -} - -/// Set new thread info, panicking if it has already been initialized -#[allow(unreachable_code, unreachable_patterns)] // some platforms don't use stack_guard -pub fn set(stack_guard: Option<Guard>, thread: Thread) { - THREAD_INFO.with(move |thread_info| { - rtassert!(thread_info.stack_guard.get().is_none() && thread_info.thread.get().is_none()); - if let Some(guard) = stack_guard { - thread_info.stack_guard.set(guard).unwrap(); - } - thread_info.thread.set(thread).unwrap(); - }); -} |
