| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use sys::mutex::Mutex; |
| use time::Duration; |
| |
| use super::waitqueue::{WaitVariable, WaitQueue, SpinMutex}; |
| |
| pub struct Condvar { |
| inner: SpinMutex<WaitVariable<()>>, |
| } |
| |
| impl Condvar { |
| pub const fn new() -> Condvar { |
| Condvar { inner: SpinMutex::new(WaitVariable::new(())) } |
| } |
| |
| #[inline] |
| pub unsafe fn init(&mut self) {} |
| |
| #[inline] |
| pub unsafe fn notify_one(&self) { |
| let _ = WaitQueue::notify_one(self.inner.lock()); |
| } |
| |
| #[inline] |
| pub unsafe fn notify_all(&self) { |
| let _ = WaitQueue::notify_all(self.inner.lock()); |
| } |
| |
| pub unsafe fn wait(&self, mutex: &Mutex) { |
| let guard = self.inner.lock(); |
| mutex.unlock(); |
| WaitQueue::wait(guard); |
| mutex.lock() |
| } |
| |
| pub unsafe fn wait_timeout(&self, _mutex: &Mutex, _dur: Duration) -> bool { |
| panic!("timeout not supported in SGX"); |
| } |
| |
| #[inline] |
| pub unsafe fn destroy(&self) {} |
| } |