68bde0a073
This commit stabilizes the `std::sync::atomics` module, renaming it to `std::sync::atomic` to match library precedent elsewhere, and tightening up behavior around incorrect memory ordering annotations. The vast majority of the module is now `stable`. However, the `AtomicOption` type has been deprecated, since it is essentially unused and is not truly a primitive atomic type. It will eventually be replaced by a higher-level abstraction like MVars. Due to deprecations, this is a: [breaking-change]
83 lines
2.2 KiB
Rust
83 lines
2.2 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use core::atomic::*;
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#[test]
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fn bool_() {
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let a = AtomicBool::new(false);
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assert_eq!(a.compare_and_swap(false, true, SeqCst), false);
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assert_eq!(a.compare_and_swap(false, true, SeqCst), true);
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a.store(false, SeqCst);
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assert_eq!(a.compare_and_swap(false, true, SeqCst), false);
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}
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#[test]
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fn bool_and() {
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let a = AtomicBool::new(true);
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assert_eq!(a.fetch_and(false, SeqCst),true);
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assert_eq!(a.load(SeqCst),false);
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}
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#[test]
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fn uint_and() {
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let x = AtomicUint::new(0xf731);
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assert_eq!(x.fetch_and(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 & 0x137f);
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}
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#[test]
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fn uint_or() {
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let x = AtomicUint::new(0xf731);
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assert_eq!(x.fetch_or(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 | 0x137f);
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}
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#[test]
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fn uint_xor() {
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let x = AtomicUint::new(0xf731);
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assert_eq!(x.fetch_xor(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
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}
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#[test]
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fn int_and() {
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let x = AtomicInt::new(0xf731);
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assert_eq!(x.fetch_and(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 & 0x137f);
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}
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#[test]
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fn int_or() {
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let x = AtomicInt::new(0xf731);
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assert_eq!(x.fetch_or(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 | 0x137f);
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}
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#[test]
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fn int_xor() {
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let x = AtomicInt::new(0xf731);
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assert_eq!(x.fetch_xor(0x137f, SeqCst), 0xf731);
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assert_eq!(x.load(SeqCst), 0xf731 ^ 0x137f);
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}
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static mut S_BOOL : AtomicBool = INIT_ATOMIC_BOOL;
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static mut S_INT : AtomicInt = INIT_ATOMIC_INT;
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static mut S_UINT : AtomicUint = INIT_ATOMIC_UINT;
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#[test]
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fn static_init() {
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unsafe {
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assert!(!S_BOOL.load(SeqCst));
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assert!(S_INT.load(SeqCst) == 0);
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assert!(S_UINT.load(SeqCst) == 0);
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}
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}
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