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);
63 #[cfg(any(not(target_arch = "arm"), target_os = "linux"))] // Missing intrinsic in compiler-builtins
65 let x = AtomicUsize::new(0xf731);
66 assert_eq!(x.fetch_min(0x137f, SeqCst), 0xf731);
67 assert_eq!(x.load(SeqCst), 0x137f);
68 assert_eq!(x.fetch_min(0xf731, SeqCst), 0x137f);
69 assert_eq!(x.load(SeqCst), 0x137f);
73 #[cfg(any(not(target_arch = "arm"), target_os = "linux"))] // Missing intrinsic in compiler-builtins
75 let x = AtomicUsize::new(0x137f);
76 assert_eq!(x.fetch_max(0xf731, SeqCst), 0x137f);
77 assert_eq!(x.load(SeqCst), 0xf731);
78 assert_eq!(x.fetch_max(0x137f, SeqCst), 0xf731);
79 assert_eq!(x.load(SeqCst), 0xf731);
84 let x = AtomicIsize::new(0xf731);
85 assert_eq!(x.fetch_and(0x137f, SeqCst), 0xf731);
86 assert_eq!(x.load(SeqCst), 0xf731 & 0x137f);
91 let x = AtomicIsize::new(0xf731);
92 assert_eq!(x.fetch_nand(0x137f, SeqCst), 0xf731);
93 assert_eq!(x.load(SeqCst), !(0xf731 & 0x137f));
98 let x = AtomicIsize::new(0xf731);
99 assert_eq!(x.fetch_or(0x137f, SeqCst), 0xf731);
100 assert_eq!(x.load(SeqCst), 0xf731 | 0x137f);
105 let x = AtomicIsize::new(0xf731);
106 assert_eq!(x.fetch_xor(0x137f, SeqCst), 0xf731);
107 assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
111 #[cfg(any(not(target_arch = "arm"), target_os = "linux"))] // Missing intrinsic in compiler-builtins
113 let x = AtomicIsize::new(0xf731);
114 assert_eq!(x.fetch_min(0x137f, SeqCst), 0xf731);
115 assert_eq!(x.load(SeqCst), 0x137f);
116 assert_eq!(x.fetch_min(0xf731, SeqCst), 0x137f);
117 assert_eq!(x.load(SeqCst), 0x137f);
121 #[cfg(any(not(target_arch = "arm"), target_os = "linux"))] // Missing intrinsic in compiler-builtins
123 let x = AtomicIsize::new(0x137f);
124 assert_eq!(x.fetch_max(0xf731, SeqCst), 0x137f);
125 assert_eq!(x.load(SeqCst), 0xf731);
126 assert_eq!(x.fetch_max(0x137f, SeqCst), 0xf731);
127 assert_eq!(x.load(SeqCst), 0xf731);
130 static S_FALSE: AtomicBool = AtomicBool::new(false);
131 static S_TRUE: AtomicBool = AtomicBool::new(true);
132 static S_INT: AtomicIsize = AtomicIsize::new(0);
133 static S_UINT: AtomicUsize = AtomicUsize::new(0);
137 // Note that we're not really testing the mutability here but it's important
138 // on Android at the moment (#49775)
139 assert!(!S_FALSE.swap(true, SeqCst));
140 assert!(S_TRUE.swap(false, SeqCst));
141 assert!(S_INT.fetch_add(1, SeqCst) == 0);
142 assert!(S_UINT.fetch_add(1, SeqCst) == 0);
146 fn atomic_access_bool() {
147 static mut ATOMIC: AtomicBool = AtomicBool::new(false);
150 assert_eq!(*ATOMIC.get_mut(), false);
151 ATOMIC.store(true, SeqCst);
152 assert_eq!(*ATOMIC.get_mut(), true);
153 ATOMIC.fetch_or(false, SeqCst);
154 assert_eq!(*ATOMIC.get_mut(), true);
155 ATOMIC.fetch_and(false, SeqCst);
156 assert_eq!(*ATOMIC.get_mut(), false);
157 ATOMIC.fetch_nand(true, SeqCst);
158 assert_eq!(*ATOMIC.get_mut(), true);
159 ATOMIC.fetch_xor(true, SeqCst);
160 assert_eq!(*ATOMIC.get_mut(), false);
165 fn atomic_alignment() {
166 use std::mem::{align_of, size_of};
168 #[cfg(target_has_atomic = "8")]
169 assert_eq!(align_of::<AtomicBool>(), size_of::<AtomicBool>());
170 #[cfg(target_has_atomic = "ptr")]
171 assert_eq!(align_of::<AtomicPtr<u8>>(), size_of::<AtomicPtr<u8>>());
172 #[cfg(target_has_atomic = "8")]
173 assert_eq!(align_of::<AtomicU8>(), size_of::<AtomicU8>());
174 #[cfg(target_has_atomic = "8")]
175 assert_eq!(align_of::<AtomicI8>(), size_of::<AtomicI8>());
176 #[cfg(target_has_atomic = "16")]
177 assert_eq!(align_of::<AtomicU16>(), size_of::<AtomicU16>());
178 #[cfg(target_has_atomic = "16")]
179 assert_eq!(align_of::<AtomicI16>(), size_of::<AtomicI16>());
180 #[cfg(target_has_atomic = "32")]
181 assert_eq!(align_of::<AtomicU32>(), size_of::<AtomicU32>());
182 #[cfg(target_has_atomic = "32")]
183 assert_eq!(align_of::<AtomicI32>(), size_of::<AtomicI32>());
184 #[cfg(target_has_atomic = "64")]
185 assert_eq!(align_of::<AtomicU64>(), size_of::<AtomicU64>());
186 #[cfg(target_has_atomic = "64")]
187 assert_eq!(align_of::<AtomicI64>(), size_of::<AtomicI64>());
188 #[cfg(target_has_atomic = "128")]
189 assert_eq!(align_of::<AtomicU128>(), size_of::<AtomicU128>());
190 #[cfg(target_has_atomic = "128")]
191 assert_eq!(align_of::<AtomicI128>(), size_of::<AtomicI128>());
192 #[cfg(target_has_atomic = "ptr")]
193 assert_eq!(align_of::<AtomicUsize>(), size_of::<AtomicUsize>());
194 #[cfg(target_has_atomic = "ptr")]
195 assert_eq!(align_of::<AtomicIsize>(), size_of::<AtomicIsize>());
199 fn atomic_compare_exchange() {
202 static ATOMIC: AtomicIsize = AtomicIsize::new(0);
204 ATOMIC.compare_exchange(0, 1, Relaxed, Relaxed).ok();
205 ATOMIC.compare_exchange(0, 1, Acquire, Relaxed).ok();
206 ATOMIC.compare_exchange(0, 1, Release, Relaxed).ok();
207 ATOMIC.compare_exchange(0, 1, AcqRel, Relaxed).ok();
208 ATOMIC.compare_exchange(0, 1, SeqCst, Relaxed).ok();
209 ATOMIC.compare_exchange(0, 1, Acquire, Acquire).ok();
210 ATOMIC.compare_exchange(0, 1, AcqRel, Acquire).ok();
211 ATOMIC.compare_exchange(0, 1, SeqCst, Acquire).ok();
212 ATOMIC.compare_exchange(0, 1, SeqCst, SeqCst).ok();
213 ATOMIC.compare_exchange_weak(0, 1, Relaxed, Relaxed).ok();
214 ATOMIC.compare_exchange_weak(0, 1, Acquire, Relaxed).ok();
215 ATOMIC.compare_exchange_weak(0, 1, Release, Relaxed).ok();
216 ATOMIC.compare_exchange_weak(0, 1, AcqRel, Relaxed).ok();
217 ATOMIC.compare_exchange_weak(0, 1, SeqCst, Relaxed).ok();
218 ATOMIC.compare_exchange_weak(0, 1, Acquire, Acquire).ok();
219 ATOMIC.compare_exchange_weak(0, 1, AcqRel, Acquire).ok();
220 ATOMIC.compare_exchange_weak(0, 1, SeqCst, Acquire).ok();
221 ATOMIC.compare_exchange_weak(0, 1, SeqCst, SeqCst).ok();