| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you under the Apache License, Version 2.0 (the |
| // "License"); you may not use this file except in compliance |
| // with the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, |
| // software distributed under the License is distributed on an |
| // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| // KIND, either express or implied. See the License for the |
| // specific language governing permissions and limitations |
| // under the License.. |
| |
| use crate::cell::RefCell; |
| use crate::thread::SgxThread; |
| |
| struct SgxThreadInfo { |
| thread: SgxThread, |
| } |
| |
| thread_local! { static THREAD_INFO: RefCell<Option<SgxThreadInfo>> = const { RefCell::new(None) } } |
| |
| impl SgxThreadInfo { |
| fn with<R, F>(f: F) -> Option<R> |
| where |
| F: FnOnce(&mut SgxThreadInfo) -> R, |
| { |
| THREAD_INFO |
| .try_with(move |thread_info| { |
| let mut thread_info = thread_info.borrow_mut(); |
| let thread_info = thread_info.get_or_insert_with(|| SgxThreadInfo { |
| thread: SgxThread::new(None), |
| }); |
| f(thread_info) |
| }) |
| .ok() |
| } |
| } |
| |
| pub fn current_thread() -> Option<SgxThread> { |
| SgxThreadInfo::with(|info| info.thread.clone()) |
| } |
| |
| pub fn set(thread: SgxThread) { |
| THREAD_INFO.with(move |thread_info| { |
| let mut thread_info = thread_info.borrow_mut(); |
| // rtassert!(thread_info.is_none()); |
| *thread_info = Some(SgxThreadInfo { thread }); |
| }); |
| } |