Struct std::sync::atomic::AtomicBoolStable
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[src]
pub struct AtomicBool { // some fields omitted }
A boolean type which can be safely shared between threads.
Methods
impl AtomicBool
fn new(v: bool) -> AtomicBool
Creates a new AtomicBool
.
Examples
fn main() { use std::sync::atomic::AtomicBool; let atomic_true = AtomicBool::new(true); let atomic_false = AtomicBool::new(false); }use std::sync::atomic::AtomicBool; let atomic_true = AtomicBool::new(true); let atomic_false = AtomicBool::new(false);
fn load(&self, order: Ordering) -> bool
Loads a value from the bool.
load
takes an Ordering
argument which describes the memory ordering of this operation.
Panics
Panics if order
is Release
or AcqRel
.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.load(Ordering::Relaxed); }use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.load(Ordering::Relaxed);
fn store(&self, val: bool, order: Ordering)
Stores a value into the bool.
store
takes an Ordering
argument which describes the memory ordering of this operation.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); some_bool.store(false, Ordering::Relaxed); }use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); some_bool.store(false, Ordering::Relaxed);
Panics
Panics if order
is Acquire
or AcqRel
.
fn swap(&self, val: bool, order: Ordering) -> bool
Stores a value into the bool, returning the old value.
swap
takes an Ordering
argument which describes the memory ordering of this operation.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.swap(false, Ordering::Relaxed); }use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.swap(false, Ordering::Relaxed);
fn compare_and_swap(&self, old: bool, new: bool, order: Ordering) -> bool
Stores a value into the bool if the current value is the same as the expected value.
If the return value is equal to old
then the value was updated.
swap
also takes an Ordering
argument which describes the memory ordering of this
operation.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.store(false, Ordering::Relaxed); }use std::sync::atomic::{AtomicBool, Ordering}; let some_bool = AtomicBool::new(true); let value = some_bool.store(false, Ordering::Relaxed);
fn fetch_and(&self, val: bool, order: Ordering) -> bool
Logical "and" with a boolean value.
Performs a logical "and" operation on the current value and the argument val
, and sets
the new value to the result.
Returns the previous value.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_and(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_and(true, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_and(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); }use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_and(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_and(true, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_and(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst));
fn fetch_nand(&self, val: bool, order: Ordering) -> bool
Logical "nand" with a boolean value.
Performs a logical "nand" operation on the current value and the argument val
, and sets
the new value to the result.
Returns the previous value.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_nand(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_nand(true, Ordering::SeqCst)); assert_eq!(0, foo.load(Ordering::SeqCst) as usize); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_nand(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); }use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_nand(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_nand(true, Ordering::SeqCst)); assert_eq!(0, foo.load(Ordering::SeqCst) as usize); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_nand(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst));
fn fetch_or(&self, val: bool, order: Ordering) -> bool
Logical "or" with a boolean value.
Performs a logical "or" operation on the current value and the argument val
, and sets the
new value to the result.
Returns the previous value.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_or(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_or(true, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_or(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); }use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_or(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_or(true, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_or(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst));
fn fetch_xor(&self, val: bool, order: Ordering) -> bool
Logical "xor" with a boolean value.
Performs a logical "xor" operation on the current value and the argument val
, and sets
the new value to the result.
Returns the previous value.
Examples
fn main() { use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_xor(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_xor(true, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_xor(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); }use std::sync::atomic::{AtomicBool, Ordering}; let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_xor(false, Ordering::SeqCst)); assert_eq!(true, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(true); assert_eq!(true, foo.fetch_xor(true, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst)); let foo = AtomicBool::new(false); assert_eq!(false, foo.fetch_xor(false, Ordering::SeqCst)); assert_eq!(false, foo.load(Ordering::SeqCst));