wasmi/src/threadsafe.rs

53 lines
1.2 KiB
Rust

extern crate atomic;
use alloc::sync::{Arc, Mutex};
pub use alloc::sync::{
Arc as MyRc, Weak as MyWeak, MutexGuard as MyRef,
};
pub use self::atomic::{
Atomic, Ordering::Relaxed as Ordering,
};
/// Thread-safe wrapper which can be used in place of a `RefCell`.
#[derive(Debug)]
pub struct MyRefCell<T>(Arc<Mutex<T>>);
impl<T> MyRefCell<T> {
/// Create new wrapper object.
pub fn new(obj: T) -> MyRefCell<T> {
MyRefCell(Arc::new(Mutex::new(obj)))
}
/// Borrow a `MyRef` to the inner value.
pub fn borrow(&self) -> ::MyRef<T> {
self.0.lock().expect("bar")
}
/// Borrow a mutable `MyRef` to the inner value.
pub fn borrow_mut(&self) -> ::MyRef<T> {
self.0.lock().expect("bar")
}
}
/// Thread-safe wrapper which can be used in place of a `Cell`.
#[derive(Debug)]
pub struct MyCell<T>(Atomic<T>) where T: Copy;
impl<T> MyCell<T> where T: Copy {
/// Create new wrapper object.
pub fn new(obj: T) -> MyCell<T> {
MyCell(Atomic::new(obj))
}
/// Returns the inner value.
pub fn get(&self) -> T {
self.0.load(::Ordering)
}
/// Sets the inner value.
pub fn set(&self, val: T) {
self.0.store(val, ::Ordering);
}
}