in lib/skywalking/tracing_context.lua [81:94]
function Internal.new()
local internal = Util.tablepool_fetch()
internal.self_generated_trace_id = true
internal.span_id_seq = 0
internal.active_spans = Util.tablepool_fetch()
internal.active_count = 0
internal.finished_spans = Util.tablepool_fetch()
internal.addRefIfFirst = addRefIfFirst
internal.addActive = addActive
internal.finishSpan = finishSpan
internal.nextSpanID = nextSpanID
return internal
end