Module lrs::atomic

Atomic integers

Types

Name	Description
fence	Creates a sequentially consistent fence.
fence_acquire	Creates an acquire fence.
fence_acquire_release	Creates an acquire-release fence.
fence_release	Creates a release fence.

Name	Description
ATOMIC_CINT_INIT
ATOMIC_I16_INIT	A zero initializer for static variables.
ATOMIC_I32_INIT	A zero initializer for static variables.
ATOMIC_I64_INIT	A zero initializer for static variables.
ATOMIC_I8_INIT	A zero initializer for static variables.
ATOMIC_ISIZE_INIT	A zero initializer for static variables.
ATOMIC_U16_INIT	A zero initializer for static variables.
ATOMIC_U32_INIT	A zero initializer for static variables.
ATOMIC_U64_INIT	A zero initializer for static variables.
ATOMIC_U8_INIT	A zero initializer for static variables.
ATOMIC_USIZE_INIT	A zero initializer for static variables.

This module contains integer wrappers with atomic operations. All types support the same operations:

`new`	Creates a new object with the specified value.
`wrap`	Wraps the integer as an atomic integer. The integer must be aligned and must not be accessed non-atomically concurrently or the behavior is undefined.
`unwrap`	Returns a mutable pointer to the integer.
`load`	Loads the value.
`store`	Stores a new value.
`exchange`	Stores a new value and returns the old one.
`compare_exchange`	Compares the current value to a given one and if they match replaces the value by by a new one. Returns the old value.
`add`	Adds a value to the current value and returns the old value.
`sub`, `and`, `or`, `nand`, `xor`	Like `add`.
`min`	Stores the minimum of the current value and a new value. Returns the old value.
`max`	Like `min`.

The default ordering is sequentially consistent. The other available orderings are

unordered: No ordering guarantees but races with this mode are not undefined behavior.
weak: Relaxed in C++11. Note that this is called weak instead of relaxed to make it visually easier to distinguish from release.
release, acquire, acquire_release: As in C++11.

See the C++11 standard for a concise description of these orderings.