Module span 

Structs

Span

SpanBottomUp

SpanEventSelfTime

Stores duration as NonZeroU64 so the variant has a niche; combined with Child’s NonZeroUsize index, this lets the compiler pack SpanEvent without a separate discriminant byte (saving 8 bytes per event vs. an end: Timestamp layout). Callers must filter zero-duration self-time events before constructing — see SpanEvent::self_time.

SpanExtra

SpanGraph

SpanName

SpanNames

SpanTimeData

SpanTotals

Enums

SpanEvent

SpanGraphEvent

Type Aliases

SpanArgs

Storage for Span::args ~32% of spans have <=1 arg (typically just the name key for turbo_tasks::function spans), so inlining one entry avoids a heap allocation in this common case.

SpanIndex