1 use core::sync::atomic::Ordering::SeqCst;
2 use core::sync::atomic::*;
6 let a = AtomicBool::new(false);
7 assert_eq!(a.compare_exchange(false, true, SeqCst, SeqCst), Ok(false));
8 assert_eq!(a.compare_exchange(false, true, SeqCst, SeqCst), Err(true));
10 a.store(false, SeqCst);
11 assert_eq!(a.compare_exchange(false, true, SeqCst, SeqCst), Ok(false));
16 let a = AtomicBool::new(true);
17 assert_eq!(a.fetch_and(false, SeqCst), true);
18 assert_eq!(a.load(SeqCst), false);
23 let a = AtomicBool::new(false);
24 assert_eq!(a.fetch_nand(false, SeqCst), false);
25 assert_eq!(a.load(SeqCst), true);
26 assert_eq!(a.fetch_nand(false, SeqCst), true);
27 assert_eq!(a.load(SeqCst), true);
28 assert_eq!(a.fetch_nand(true, SeqCst), true);
29 assert_eq!(a.load(SeqCst), false);
30 assert_eq!(a.fetch_nand(true, SeqCst), false);
31 assert_eq!(a.load(SeqCst), true);
36 let x = AtomicUsize::new(0xf731);
37 assert_eq!(x.fetch_and(0x137f, SeqCst), 0xf731);
38 assert_eq!(x.load(SeqCst), 0xf731 & 0x137f);
43 let x = AtomicUsize::new(0xf731);
44 assert_eq!(x.fetch_nand(0x137f, SeqCst), 0xf731);
45 assert_eq!(x.load(SeqCst), !(0xf731 & 0x137f));
50 let x = AtomicUsize::new(0xf731);
51 assert_eq!(x.fetch_or(0x137f, SeqCst), 0xf731);
52 assert_eq!(x.load(SeqCst), 0xf731 | 0x137f);
57 let x = AtomicUsize::new(0xf731);
58 assert_eq!(x.fetch_xor(0x137f, SeqCst), 0xf731);
59 assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
64 let x = AtomicIsize::new(0xf731);
65 assert_eq!(x.fetch_and(0x137f, SeqCst), 0xf731);
66 assert_eq!(x.load(SeqCst), 0xf731 & 0x137f);
71 let x = AtomicIsize::new(0xf731);
72 assert_eq!(x.fetch_nand(0x137f, SeqCst), 0xf731);
73 assert_eq!(x.load(SeqCst), !(0xf731 & 0x137f));
78 let x = AtomicIsize::new(0xf731);
79 assert_eq!(x.fetch_or(0x137f, SeqCst), 0xf731);
80 assert_eq!(x.load(SeqCst), 0xf731 | 0x137f);
85 let x = AtomicIsize::new(0xf731);
86 assert_eq!(x.fetch_xor(0x137f, SeqCst), 0xf731);
87 assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
90 static S_FALSE: AtomicBool = AtomicBool::new(false);
91 static S_TRUE: AtomicBool = AtomicBool::new(true);
92 static S_INT: AtomicIsize = AtomicIsize::new(0);
93 static S_UINT: AtomicUsize = AtomicUsize::new(0);
97 // Note that we're not really testing the mutability here but it's important
98 // on Android at the moment (#49775)
99 assert!(!S_FALSE.swap(true, SeqCst));
100 assert!(S_TRUE.swap(false, SeqCst));
101 assert!(S_INT.fetch_add(1, SeqCst) == 0);
102 assert!(S_UINT.fetch_add(1, SeqCst) == 0);
106 fn atomic_access_bool() {
107 static mut ATOMIC: AtomicBool = AtomicBool::new(false);
110 assert_eq!(*ATOMIC.get_mut(), false);
111 ATOMIC.store(true, SeqCst);
112 assert_eq!(*ATOMIC.get_mut(), true);
113 ATOMIC.fetch_or(false, SeqCst);
114 assert_eq!(*ATOMIC.get_mut(), true);
115 ATOMIC.fetch_and(false, SeqCst);
116 assert_eq!(*ATOMIC.get_mut(), false);
117 ATOMIC.fetch_nand(true, SeqCst);
118 assert_eq!(*ATOMIC.get_mut(), true);
119 ATOMIC.fetch_xor(true, SeqCst);
120 assert_eq!(*ATOMIC.get_mut(), false);
125 fn atomic_alignment() {
126 use std::mem::{align_of, size_of};
128 #[cfg(target_has_atomic = "8")]
129 assert_eq!(align_of::<AtomicBool>(), size_of::<AtomicBool>());
130 #[cfg(target_has_atomic = "ptr")]
131 assert_eq!(align_of::<AtomicPtr<u8>>(), size_of::<AtomicPtr<u8>>());
132 #[cfg(target_has_atomic = "8")]
133 assert_eq!(align_of::<AtomicU8>(), size_of::<AtomicU8>());
134 #[cfg(target_has_atomic = "8")]
135 assert_eq!(align_of::<AtomicI8>(), size_of::<AtomicI8>());
136 #[cfg(target_has_atomic = "16")]
137 assert_eq!(align_of::<AtomicU16>(), size_of::<AtomicU16>());
138 #[cfg(target_has_atomic = "16")]
139 assert_eq!(align_of::<AtomicI16>(), size_of::<AtomicI16>());
140 #[cfg(target_has_atomic = "32")]
141 assert_eq!(align_of::<AtomicU32>(), size_of::<AtomicU32>());
142 #[cfg(target_has_atomic = "32")]
143 assert_eq!(align_of::<AtomicI32>(), size_of::<AtomicI32>());
144 #[cfg(target_has_atomic = "64")]
145 assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
146 #[cfg(target_has_atomic = "64")]
147 assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
148 #[cfg(target_has_atomic = "128")]
149 assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
150 #[cfg(target_has_atomic = "128")]
151 assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
152 #[cfg(target_has_atomic = "ptr")]
153 assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
154 #[cfg(target_has_atomic = "ptr")]
155 assert_eq!(align_of::<AtomicIsize>(), size_of::<AtomicIsize>());
159 fn atomic_compare_exchange() {
162 static ATOMIC: AtomicIsize = AtomicIsize::new(0);
164 ATOMIC.compare_exchange(0, 1, Relaxed, Relaxed).ok();
165 ATOMIC.compare_exchange(0, 1, Acquire, Relaxed).ok();
166 ATOMIC.compare_exchange(0, 1, Release, Relaxed).ok();
167 ATOMIC.compare_exchange(0, 1, AcqRel, Relaxed).ok();
168 ATOMIC.compare_exchange(0, 1, SeqCst, Relaxed).ok();
169 ATOMIC.compare_exchange(0, 1, Acquire, Acquire).ok();
170 ATOMIC.compare_exchange(0, 1, AcqRel, Acquire).ok();
171 ATOMIC.compare_exchange(0, 1, SeqCst, Acquire).ok();
172 ATOMIC.compare_exchange(0, 1, SeqCst, SeqCst).ok();
173 ATOMIC.compare_exchange_weak(0, 1, Relaxed, Relaxed).ok();
174 ATOMIC.compare_exchange_weak(0, 1, Acquire, Relaxed).ok();
175 ATOMIC.compare_exchange_weak(0, 1, Release, Relaxed).ok();
176 ATOMIC.compare_exchange_weak(0, 1, AcqRel, Relaxed).ok();
177 ATOMIC.compare_exchange_weak(0, 1, SeqCst, Relaxed).ok();
178 ATOMIC.compare_exchange_weak(0, 1, Acquire, Acquire).ok();
179 ATOMIC.compare_exchange_weak(0, 1, AcqRel, Acquire).ok();
180 ATOMIC.compare_exchange_weak(0, 1, SeqCst, Acquire).ok();
181 ATOMIC.compare_exchange_weak(0, 1, SeqCst, SeqCst).ok();