Enum ThreadSafety 

pub enum ThreadSafety {
    Unsend,
    Send,
    Sync,
}

Thread-safety trichotomy (ADR-0084).

Carried by MarkerKind::ThreadSafety and stored on every type-bearing StructDef / EnumDef. Inference takes the structural minimum over members; primitives are intrinsically Sync and raw pointers are intrinsically Unsend.

The variant order matters: it makes the derived Ord impl yield the chain Unsend < Send < Sync, which is what the structural-minimum inference rule expects.

Variants

Unsend

Cannot cross thread boundaries.

Send

Safe to move across threads (transferring ownership).

Sync

Safe to share across threads. Subsumes Send.

Trait Implementations

impl Clone for ThreadSafety

fn clone(&self) -> ThreadSafety

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThreadSafety

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

Formats the value using the given formatter.

impl Default for ThreadSafety

fn default() -> Self

Sync is the identity for the structural-minimum operation — min(any, Sync) = any. Defaulting to Sync means an uninitialized field has no impact when the inference pass folds over members.

impl<'de> Deserialize<'de> for ThreadSafety

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ThreadSafety

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 Ord for ThreadSafety

fn cmp(&self, other: &ThreadSafety) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ThreadSafety

fn eq(&self, other: &ThreadSafety) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ThreadSafety

fn partial_cmp(&self, other: &ThreadSafety) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ThreadSafety

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for ThreadSafety

impl Eq for ThreadSafety

impl StructuralPartialEq for ThreadSafety