Ctx returns the current tracing context.

InitTracing initializes performance tracing for the current goroutine.

Span retrieves the current span of this goroutine.

StartSlowSpan creates a new sub-span of the goroutine's current slow span or a noop span if there is no current span.

StartSpan creates new sub-span of the goroutine's current span or a noop span if there is no current span.

StartSubSpan creates new sub-span of the context's current span or a noop span if there is no current span.

WithSpan creates a new sub-span of the goroutine's current span and executes the given function within the sub-span.

WithSubSpan executes the given function in a new sub-span of the context's current span or a noop span if there is no current span.