Trace Eio events using OCaml's runtime events system.
val mint_id : unit -> idmint_id () is a fresh unique id.
Libraries and applications can use these functions to make the traces more useful.
val name : id -> string -> unitname id label sets label as the name for id.
with_span op fn runs fn (), labelling the timespan during which it runs with op.
suspend_fiber op records that the current fiber is now suspended waiting for op.
These are normally only called by the scheduler.
create_fiber ~cc id records the creation of fiber id in context cc.
val create_cc : id -> Eio_runtime_events.cc_ty -> unitcreate_cc id ty records the creation of cancellation context id.
val create_obj : ?label:string -> id -> Eio_runtime_events.obj_ty -> unitcreate_obj id ty records the creation of id.
val get : id -> unitget src records reading a promise, taking from a stream, taking a lock, etc.
val try_get : id -> unittry_get src records that the current fiber wants to get from src (which is not currently ready).
val put : id -> unitput dst records resolving a promise, adding to a stream, releasing a lock, etc.
val fiber : id -> unitfiber id records that id is now the current fiber for this domain.
val suspend_domain : Runtime_events.Type.span -> unitsuspend_domain records when the event loop is stopped waiting for events from the OS.
val exit_fiber : id -> unitexit_fiber id records that fiber id has finished.
val error : id -> exn -> uniterror id exn records that id received an error.