| //@ run-pass |
| #![feature(core_intrinsics)] |
| use std::intrinsics::{self as rusti, AtomicOrdering::*}; |
| |
| 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); |
| } |
| } |
