| //@ run-pass |
| #![feature(intrinsics)] |
| |
| mod rusti { |
| extern "rust-intrinsic" { |
| pub fn atomic_cxchg_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| pub fn atomic_cxchg_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| pub fn atomic_cxchg_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| |
| pub fn atomic_cxchgweak_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| pub fn atomic_cxchgweak_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| pub fn atomic_cxchgweak_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
| |
| pub fn atomic_load_seqcst<T>(src: *const T) -> T; |
| pub fn atomic_load_acquire<T>(src: *const T) -> T; |
| |
| pub fn atomic_store_seqcst<T>(dst: *mut T, val: T); |
| pub fn atomic_store_release<T>(dst: *mut T, val: T); |
| |
| pub fn atomic_xchg_seqcst<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xchg_acquire<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xchg_release<T>(dst: *mut T, src: T) -> T; |
| |
| pub fn atomic_xadd_seqcst<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xadd_acquire<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xadd_release<T>(dst: *mut T, src: T) -> T; |
| |
| pub fn atomic_xsub_seqcst<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xsub_acquire<T>(dst: *mut T, src: T) -> T; |
| pub fn atomic_xsub_release<T>(dst: *mut T, src: T) -> T; |
| } |
| } |
| |
| pub fn main() { |
| unsafe { |
| let mut x: Box<_> = Box::new(1); |
| |
| assert_eq!(rusti::atomic_load_seqcst(&*x), 1); |
| *x = 5; |
| assert_eq!(rusti::atomic_load_acquire(&*x), 5); |
| |
| rusti::atomic_store_seqcst(&mut *x,3); |
| assert_eq!(*x, 3); |
| rusti::atomic_store_release(&mut *x,1); |
| assert_eq!(*x, 1); |
| |
| assert_eq!(rusti::atomic_cxchg_seqcst_seqcst(&mut *x, 1, 2), (1, true)); |
| assert_eq!(*x, 2); |
| |
| assert_eq!(rusti::atomic_cxchg_acquire_acquire(&mut *x, 1, 3), (2, false)); |
| assert_eq!(*x, 2); |
| |
| assert_eq!(rusti::atomic_cxchg_release_relaxed(&mut *x, 2, 1), (2, true)); |
| assert_eq!(*x, 1); |
| |
| assert_eq!(rusti::atomic_xchg_seqcst(&mut *x, 0), 1); |
| assert_eq!(*x, 0); |
| |
| assert_eq!(rusti::atomic_xchg_acquire(&mut *x, 1), 0); |
| assert_eq!(*x, 1); |
| |
| assert_eq!(rusti::atomic_xchg_release(&mut *x, 0), 1); |
| assert_eq!(*x, 0); |
| |
| assert_eq!(rusti::atomic_xadd_seqcst(&mut *x, 1), 0); |
| assert_eq!(rusti::atomic_xadd_acquire(&mut *x, 1), 1); |
| assert_eq!(rusti::atomic_xadd_release(&mut *x, 1), 2); |
| assert_eq!(*x, 3); |
| |
| assert_eq!(rusti::atomic_xsub_seqcst(&mut *x, 1), 3); |
| assert_eq!(rusti::atomic_xsub_acquire(&mut *x, 1), 2); |
| assert_eq!(rusti::atomic_xsub_release(&mut *x, 1), 1); |
| assert_eq!(*x, 0); |
| |
| loop { |
| let res = rusti::atomic_cxchgweak_seqcst_seqcst(&mut *x, 0, 1); |
| assert_eq!(res.0, 0); |
| if res.1 { |
| break; |
| } |
| } |
| assert_eq!(*x, 1); |
| |
| loop { |
| let res = rusti::atomic_cxchgweak_acquire_acquire(&mut *x, 1, 2); |
| assert_eq!(res.0, 1); |
| if res.1 { |
| break; |
| } |
| } |
| assert_eq!(*x, 2); |
| |
| loop { |
| let res = rusti::atomic_cxchgweak_release_relaxed(&mut *x, 2, 3); |
| assert_eq!(res.0, 2); |
| if res.1 { |
| break; |
| } |
| } |
| assert_eq!(*x, 3); |
| } |
| } |
