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1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
c34b1796 | 11 | |
1a4d82fc JJ |
12 | #![allow(unknown_features)] |
13 | #![feature(box_syntax)] | |
14 | #![feature(intrinsics)] | |
15 | ||
223e47cc | 16 | mod rusti { |
1a4d82fc | 17 | extern "rust-intrinsic" { |
54a0048b SL |
18 | pub fn atomic_cxchg<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
19 | pub fn atomic_cxchg_acq<T>(dst: *mut T, old: T, src: T) -> (T, bool); | |
20 | pub fn atomic_cxchg_rel<T>(dst: *mut T, old: T, src: T) -> (T, bool); | |
223e47cc | 21 | |
7453a54e SL |
22 | pub fn atomic_cxchgweak<T>(dst: *mut T, old: T, src: T) -> (T, bool); |
23 | pub fn atomic_cxchgweak_acq<T>(dst: *mut T, old: T, src: T) -> (T, bool); | |
24 | pub fn atomic_cxchgweak_rel<T>(dst: *mut T, old: T, src: T) -> (T, bool); | |
25 | ||
1a4d82fc JJ |
26 | pub fn atomic_load<T>(src: *const T) -> T; |
27 | pub fn atomic_load_acq<T>(src: *const T) -> T; | |
970d7e83 | 28 | |
1a4d82fc JJ |
29 | pub fn atomic_store<T>(dst: *mut T, val: T); |
30 | pub fn atomic_store_rel<T>(dst: *mut T, val: T); | |
970d7e83 | 31 | |
1a4d82fc JJ |
32 | pub fn atomic_xchg<T>(dst: *mut T, src: T) -> T; |
33 | pub fn atomic_xchg_acq<T>(dst: *mut T, src: T) -> T; | |
34 | pub fn atomic_xchg_rel<T>(dst: *mut T, src: T) -> T; | |
223e47cc | 35 | |
1a4d82fc JJ |
36 | pub fn atomic_xadd<T>(dst: *mut T, src: T) -> T; |
37 | pub fn atomic_xadd_acq<T>(dst: *mut T, src: T) -> T; | |
38 | pub fn atomic_xadd_rel<T>(dst: *mut T, src: T) -> T; | |
223e47cc | 39 | |
1a4d82fc JJ |
40 | pub fn atomic_xsub<T>(dst: *mut T, src: T) -> T; |
41 | pub fn atomic_xsub_acq<T>(dst: *mut T, src: T) -> T; | |
42 | pub fn atomic_xsub_rel<T>(dst: *mut T, src: T) -> T; | |
223e47cc LB |
43 | } |
44 | } | |
45 | ||
46 | pub fn main() { | |
47 | unsafe { | |
c34b1796 | 48 | let mut x: Box<_> = box 1; |
223e47cc | 49 | |
1a4d82fc | 50 | assert_eq!(rusti::atomic_load(&*x), 1); |
970d7e83 | 51 | *x = 5; |
1a4d82fc | 52 | assert_eq!(rusti::atomic_load_acq(&*x), 5); |
970d7e83 | 53 | |
1a4d82fc | 54 | rusti::atomic_store(&mut *x,3); |
970d7e83 | 55 | assert_eq!(*x, 3); |
1a4d82fc | 56 | rusti::atomic_store_rel(&mut *x,1); |
970d7e83 LB |
57 | assert_eq!(*x, 1); |
58 | ||
54a0048b | 59 | assert_eq!(rusti::atomic_cxchg(&mut *x, 1, 2), (1, true)); |
970d7e83 | 60 | assert_eq!(*x, 2); |
223e47cc | 61 | |
54a0048b | 62 | assert_eq!(rusti::atomic_cxchg_acq(&mut *x, 1, 3), (2, false)); |
970d7e83 | 63 | assert_eq!(*x, 2); |
223e47cc | 64 | |
54a0048b | 65 | assert_eq!(rusti::atomic_cxchg_rel(&mut *x, 2, 1), (2, true)); |
970d7e83 | 66 | assert_eq!(*x, 1); |
223e47cc | 67 | |
1a4d82fc | 68 | assert_eq!(rusti::atomic_xchg(&mut *x, 0), 1); |
970d7e83 | 69 | assert_eq!(*x, 0); |
223e47cc | 70 | |
1a4d82fc | 71 | assert_eq!(rusti::atomic_xchg_acq(&mut *x, 1), 0); |
970d7e83 | 72 | assert_eq!(*x, 1); |
223e47cc | 73 | |
1a4d82fc | 74 | assert_eq!(rusti::atomic_xchg_rel(&mut *x, 0), 1); |
970d7e83 | 75 | assert_eq!(*x, 0); |
223e47cc | 76 | |
1a4d82fc JJ |
77 | assert_eq!(rusti::atomic_xadd(&mut *x, 1), 0); |
78 | assert_eq!(rusti::atomic_xadd_acq(&mut *x, 1), 1); | |
79 | assert_eq!(rusti::atomic_xadd_rel(&mut *x, 1), 2); | |
970d7e83 | 80 | assert_eq!(*x, 3); |
223e47cc | 81 | |
1a4d82fc JJ |
82 | assert_eq!(rusti::atomic_xsub(&mut *x, 1), 3); |
83 | assert_eq!(rusti::atomic_xsub_acq(&mut *x, 1), 2); | |
84 | assert_eq!(rusti::atomic_xsub_rel(&mut *x, 1), 1); | |
970d7e83 | 85 | assert_eq!(*x, 0); |
7453a54e SL |
86 | |
87 | loop { | |
88 | let res = rusti::atomic_cxchgweak(&mut *x, 0, 1); | |
89 | assert_eq!(res.0, 0); | |
90 | if res.1 { | |
91 | break; | |
92 | } | |
93 | } | |
94 | assert_eq!(*x, 1); | |
95 | ||
96 | loop { | |
97 | let res = rusti::atomic_cxchgweak_acq(&mut *x, 1, 2); | |
98 | assert_eq!(res.0, 1); | |
99 | if res.1 { | |
100 | break; | |
101 | } | |
102 | } | |
103 | assert_eq!(*x, 2); | |
104 | ||
105 | loop { | |
106 | let res = rusti::atomic_cxchgweak_rel(&mut *x, 2, 3); | |
107 | assert_eq!(res.0, 2); | |
108 | if res.1 { | |
109 | break; | |
110 | } | |
111 | } | |
112 | assert_eq!(*x, 3); | |
223e47cc LB |
113 | } |
114 | } |