Enum Storage 

pub enum Storage {
    Automatic,
    Static {
        item_name: String,
        exported: bool,
    },
    ThreadLocal {
        item_name: String,
        exported: bool,
    },
    Extern {
        item_name: String,
    },
}

Where an object lives, and how it is generated.

Variants

Automatic

A let binding: a local variable or a parameter.

Static

A static mut item: a file-scope variable or a function-local static.

Fields

item_name: String

The name of the generated Rust item, already made unique.

exported: bool

Whether the item is pub — true for a file-scope object without static, which C gives external linkage and which Rust code should therefore be able to reach.

ThreadLocal

A thread_local! item: an object declared _Thread_local, thread_local or __thread.

C gives it static storage duration and one instance per thread, which is exactly what std::thread_local! provides. The item holds an UnsafeCell<T>, and every access goes through the *mut T its with hands out — valid for as long as the current thread’s copy is, which is the lifetime C promises. It is the third construct whose expansion needs more than core, after variable length arrays and alloca.

Fields

item_name: String

The name of the generated Rust item, already made unique.

exported: bool

Whether the item is pub; see Storage::Static.

Extern

An object defined outside the translation unit, declared in the expansion’s extern block.

Fields

item_name: String

The name the symbol has.

Implementations

impl Storage

pub fn item_name(&self) -> Option<&str>

The name of the generated item, for the two storage classes that have one of their own.

pub fn is_thread_local(&self) -> bool

Whether this is a thread-local object.

Trait Implementations

impl Clone for Storage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Storage

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

Formats the value using the given formatter.

impl Eq for Storage

impl PartialEq for Storage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Storage