Macro sp_tracing::trace_span
source · [−]macro_rules! trace_span {
(target: $target:expr, parent: $parent:expr, $name:expr, $($field:tt)*) => { ... };
(target: $target:expr, parent: $parent:expr, $name:expr) => { ... };
(parent: $parent:expr, $name:expr, $($field:tt)*) => { ... };
(parent: $parent:expr, $name:expr) => { ... };
(target: $target:expr, $name:expr, $($field:tt)*) => { ... };
(target: $target:expr, $name:expr) => { ... };
($name:expr, $($field:tt)*) => { ... };
($name:expr) => { ... };
}
Expand description
Constructs a span at the trace level.
Fields and attributes are set using the same syntax as the span!
macro.
See the top-level documentation for details on the syntax accepted by this macro.
Examples
trace_span!("my_span");
// is equivalent to:
span!(Level::TRACE, "my_span");
let span = trace_span!("my span");
span.in_scope(|| {
// do work inside the span...
});