package eio

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A mock Eio.Domain_manager that runs everything in a single domain.

val create : unit -> Eio.Domain_manager.ty Eio.Std.r

create () is a mock domain manager.

When asked to run a new Eio domain, it just runs it in the parent domain. It runs the function in a context where id is a fresh domain ID (assigned sequentially starting from 1).

val run : (Eio.Domain_manager.ty Eio.Std.r -> 'a) -> 'a

run fn runs fn dm, where dm is a new fake domain manager. It also runs with_domain_tracing to display domain IDs in trace output.

fn itself runs with id set to "0".

val id : string Eio.Std.Fiber.key

id is used to get or set the current fake domain's ID.

This is used in traceln output.

val with_domain_tracing : (unit -> 'a) -> 'a

with_domain_tracing fn runs fn () with a modified traceln function that prefixes the current id (if any) to each trace message.

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