Struct Context

pub struct Context { /* private fields */ }

The thread-local callback context for #[trace].

Implementations

impl Context

pub fn default_callback(ctx: &mut Context, event: Event)

The default callback registered by Self::new().

pub fn stack(&self) -> &[CallContext]

Returns the current call stack.

pub fn top(&self) -> &CallContext

Returns the top of the current call stack.

pub fn register_callback<F, G>(&mut self, f: F)

where F: FnOnce(Option<Callback>) -> G, G: Fn(&mut Context, Event) + 'static,

Registers a callback. A previously registered callback is passed to the outer closure.

pub fn unregister_callback(&mut self) -> Option<Callback>

Unregisters a callback.