Struct SDL_AtomicInt 

#[repr(C)]
pub struct SDL_AtomicInt {
    pub value: c_int,
}

A type representing an atomic integer value.

This can be used to manage a value that is synchronized across multiple CPUs without a race condition; when an app sets a value with SDL_SetAtomicInt all other threads, regardless of the CPU it is running on, will see that value when retrieved with SDL_GetAtomicInt, regardless of CPU caches, etc.

This is also useful for atomic compare-and-swap operations: a thread can change the value as long as its current value matches expectations. When done in a loop, one can guarantee data consistency across threads without a lock (but the usual warnings apply: if you don’t know what you’re doing, or you don’t do it carefully, you can confidently cause any number of disasters with this, so in most cases, you should use a mutex instead of this!).

This is a struct so people don’t accidentally use numeric operations on it directly. You have to use SDL atomic functions.

Available Since: This struct is available since SDL 3.2.0.

See Also: SDL_CompareAndSwapAtomicInt See Also: SDL_GetAtomicInt See Also: SDL_SetAtomicInt See Also: SDL_AddAtomicInt

Fields

value: c_int

Trait Implementations

impl Clone for SDL_AtomicInt

fn clone(&self) -> SDL_AtomicInt

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SDL_AtomicInt

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SDL_AtomicInt

fn default() -> SDL_AtomicInt

Returns the “default value” for a type.

impl Hash for SDL_AtomicInt

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Copy for SDL_AtomicInt