Struct tracing_core::dispatcher::State

struct State {
    default: RefCell<Option<Dispatch>>,
    can_enter: Cell<bool>,
}

The dispatch state of a thread.

Fields

default: RefCell<Option<Dispatch>>

This thread’s current default dispatcher.

can_enter: Cell<bool>

Whether or not we can currently begin dispatching a trace event.

This is set to false when functions such as enter, exit, event, and new_span are called on this thread’s default dispatcher, to prevent further trace events triggered inside those functions from creating an infinite recursion. When we finish handling a dispatch, this is set back to true.

Implementations

impl State

fn set_default(new_dispatch: Dispatch) -> DefaultGuard

Replaces the current default dispatcher on this thread with the provided dispatcher.Any

Dropping the returned ResetGuard will reset the default dispatcher to the previous value.

fn enter(&self) -> Option<Entered<'_>>