mirror of https://github.com/rust-lang/rust
103 lines
3.4 KiB
Rust
103 lines
3.4 KiB
Rust
//@ run-pass
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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_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchg_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchg_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak_seqcst_seqcst<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak_acquire_acquire<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_cxchgweak_release_relaxed<T>(dst: *mut T, old: T, src: T) -> (T, bool);
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pub fn atomic_load_seqcst<T>(src: *const T) -> T;
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pub fn atomic_load_acquire<T>(src: *const T) -> T;
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pub fn atomic_store_seqcst<T>(dst: *mut T, val: T);
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pub fn atomic_store_release<T>(dst: *mut T, val: T);
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pub fn atomic_xchg_seqcst<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xchg_acquire<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xchg_release<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd_seqcst<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd_acquire<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xadd_release<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub_seqcst<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub_acquire<T>(dst: *mut T, src: T) -> T;
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pub fn atomic_xsub_release<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::new(1);
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assert_eq!(rusti::atomic_load_seqcst(&*x), 1);
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*x = 5;
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assert_eq!(rusti::atomic_load_acquire(&*x), 5);
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rusti::atomic_store_seqcst(&mut *x,3);
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assert_eq!(*x, 3);
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rusti::atomic_store_release(&mut *x,1);
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_cxchg_seqcst_seqcst(&mut *x, 1, 2), (1, true));
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assert_eq!(*x, 2);
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assert_eq!(rusti::atomic_cxchg_acquire_acquire(&mut *x, 1, 3), (2, false));
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assert_eq!(*x, 2);
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assert_eq!(rusti::atomic_cxchg_release_relaxed(&mut *x, 2, 1), (2, true));
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_xchg_seqcst(&mut *x, 0), 1);
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assert_eq!(*x, 0);
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assert_eq!(rusti::atomic_xchg_acquire(&mut *x, 1), 0);
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assert_eq!(*x, 1);
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assert_eq!(rusti::atomic_xchg_release(&mut *x, 0), 1);
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assert_eq!(*x, 0);
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assert_eq!(rusti::atomic_xadd_seqcst(&mut *x, 1), 0);
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assert_eq!(rusti::atomic_xadd_acquire(&mut *x, 1), 1);
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assert_eq!(rusti::atomic_xadd_release(&mut *x, 1), 2);
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assert_eq!(*x, 3);
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assert_eq!(rusti::atomic_xsub_seqcst(&mut *x, 1), 3);
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assert_eq!(rusti::atomic_xsub_acquire(&mut *x, 1), 2);
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assert_eq!(rusti::atomic_xsub_release(&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_seqcst_seqcst(&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_acquire_acquire(&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_release_relaxed(&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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