115 lines
3.7 KiB
Rust
115 lines
3.7 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(unknown_features)]
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#![feature(box_syntax)]
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#![feature(intrinsics)]
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mod rusti {
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extern "rust-intrinsic" {
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pub fn atomic_cxchg<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchg_acq<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchg_rel<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak_acq<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak_rel<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_load<T>(src: *const T) -> T;
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pub fn atomic_load_acq<T>(src: *const T) -> T;
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pub fn atomic_store<T>(dst: *mut T, val: T);
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pub fn atomic_store_rel<T>(dst: *mut T, val: T);
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pub fn atomic_xchg<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xchg_acq<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xchg_rel<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd_acq<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd_rel<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub_acq<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub_rel<T>(dst: *mut T, src: T) -> T;
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}
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}
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pub fn main() {
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unsafe {
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let mut x: Box<_> = box 1;
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assert_eq!(rusti::atomic_load(&*x), 1);
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*x = 5;
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assert_eq!(rusti::atomic_load_acq(&*x), 5);
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rusti::atomic_store(&mut *x,3);
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assert_eq!(*x, 3);
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rusti::atomic_store_rel(&mut *x,1);
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_cxchg(&mut *x, 1, 2), (1, true));
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assert_eq!(*x, 2);
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assert_eq!(rusti::atomic_cxchg_acq(&mut *x, 1, 3), (2, false));
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assert_eq!(*x, 2);
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assert_eq!(rusti::atomic_cxchg_rel(&mut *x, 2, 1), (2, true));
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_xchg(&mut *x, 0), 1);
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assert_eq!(*x, 0);
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assert_eq!(rusti::atomic_xchg_acq(&mut *x, 1), 0);
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_xchg_rel(&mut *x, 0), 1);
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assert_eq!(*x, 0);
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assert_eq!(rusti::atomic_xadd(&mut *x, 1), 0);
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assert_eq!(rusti::atomic_xadd_acq(&mut *x, 1), 1);
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assert_eq!(rusti::atomic_xadd_rel(&mut *x, 1), 2);
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assert_eq!(*x, 3);
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assert_eq!(rusti::atomic_xsub(&mut *x, 1), 3);
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assert_eq!(rusti::atomic_xsub_acq(&mut *x, 1), 2);
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assert_eq!(rusti::atomic_xsub_rel(&mut *x, 1), 1);
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assert_eq!(*x, 0);
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loop {
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let res = rusti::atomic_cxchgweak(&mut *x, 0, 1);
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assert_eq!(res.0, 0);
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if res.1 {
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break;
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}
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}
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assert_eq!(*x, 1);
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loop {
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let res = rusti::atomic_cxchgweak_acq(&mut *x, 1, 2);
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assert_eq!(res.0, 1);
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if res.1 {
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break;
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}
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}
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assert_eq!(*x, 2);
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loop {
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let res = rusti::atomic_cxchgweak_rel(&mut *x, 2, 3);
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assert_eq!(res.0, 2);
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if res.1 {
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break;
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}
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}
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assert_eq!(*x, 3);
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}
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}
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