74 lines
2.5 KiB
Rust
74 lines
2.5 KiB
Rust
use std::sync::atomic::{fence, AtomicBool, AtomicIsize, AtomicU64, Ordering::*};
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fn main() {
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atomic_bool();
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atomic_isize();
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atomic_u64();
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atomic_fences();
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}
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fn atomic_bool() {
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static mut ATOMIC: AtomicBool = AtomicBool::new(false);
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unsafe {
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assert_eq!(*ATOMIC.get_mut(), false);
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ATOMIC.store(true, SeqCst);
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assert_eq!(*ATOMIC.get_mut(), true);
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ATOMIC.fetch_or(false, SeqCst);
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assert_eq!(*ATOMIC.get_mut(), true);
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ATOMIC.fetch_and(false, SeqCst);
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assert_eq!(*ATOMIC.get_mut(), false);
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ATOMIC.fetch_nand(true, SeqCst);
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assert_eq!(*ATOMIC.get_mut(), true);
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ATOMIC.fetch_xor(true, SeqCst);
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assert_eq!(*ATOMIC.get_mut(), false);
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}
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}
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fn atomic_isize() {
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static ATOMIC: AtomicIsize = AtomicIsize::new(0);
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// Make sure trans can emit all the intrinsics correctly
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assert_eq!(ATOMIC.compare_exchange(0, 1, Relaxed, Relaxed), Ok(0));
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assert_eq!(ATOMIC.compare_exchange(0, 2, Acquire, Relaxed), Err(1));
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assert_eq!(ATOMIC.compare_exchange(0, 1, Release, Relaxed), Err(1));
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assert_eq!(ATOMIC.compare_exchange(1, 0, AcqRel, Relaxed), Ok(1));
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ATOMIC.compare_exchange(0, 1, SeqCst, Relaxed).ok();
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ATOMIC.compare_exchange(0, 1, Acquire, Acquire).ok();
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ATOMIC.compare_exchange(0, 1, AcqRel, Acquire).ok();
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ATOMIC.compare_exchange(0, 1, SeqCst, Acquire).ok();
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ATOMIC.compare_exchange(0, 1, SeqCst, SeqCst).ok();
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ATOMIC.store(0, SeqCst);
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assert_eq!(ATOMIC.compare_exchange_weak(0, 1, Relaxed, Relaxed), Ok(0));
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assert_eq!(ATOMIC.compare_exchange_weak(0, 2, Acquire, Relaxed), Err(1));
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assert_eq!(ATOMIC.compare_exchange_weak(0, 1, Release, Relaxed), Err(1));
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assert_eq!(ATOMIC.compare_exchange_weak(1, 0, AcqRel, Relaxed), Ok(1));
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ATOMIC.compare_exchange_weak(0, 1, AcqRel, Relaxed).ok();
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ATOMIC.compare_exchange_weak(0, 1, SeqCst, Relaxed).ok();
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ATOMIC.compare_exchange_weak(0, 1, Acquire, Acquire).ok();
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ATOMIC.compare_exchange_weak(0, 1, AcqRel, Acquire).ok();
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ATOMIC.compare_exchange_weak(0, 1, SeqCst, Acquire).ok();
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ATOMIC.compare_exchange_weak(0, 1, SeqCst, SeqCst).ok();
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}
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fn atomic_u64() {
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static ATOMIC: AtomicU64 = AtomicU64::new(0);
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ATOMIC.store(1, SeqCst);
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assert_eq!(ATOMIC.compare_exchange(0, 0x100, AcqRel, Acquire), Err(1));
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assert_eq!(
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ATOMIC.compare_exchange_weak(1, 0x100, AcqRel, Acquire),
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Ok(1)
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);
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assert_eq!(ATOMIC.load(Relaxed), 0x100);
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}
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fn atomic_fences() {
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fence(SeqCst);
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fence(Release);
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fence(Acquire);
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fence(AcqRel);
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}
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