Struct ContextGuard 

pub struct ContextGuard { /* private fields */ }

Available on crate feature std only.

RAII guard that removes a context entry when dropped.

Returned by with_field, with_trace_id, with_request_id and ContextSnapshot::attach. Guards may be dropped in any order.

The guard is deliberately !Send and !Sync: context lives in the thread that created the guard, so the guard must be dropped there. Holding one across an .await makes the future !Send. Use ContextSnapshot to carry context into other threads or tasks.

let guard = log_io::context::with_field("tenant", "a");
std::thread::spawn(move || drop(guard)); // error: `ContextGuard` is not `Send`

Trait Implementations

impl Debug for ContextGuard

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

Formats the value using the given formatter.

impl Drop for ContextGuard

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.