akkadotnet/akka.net

Port of Akka actors for .NET

Aaron Stannard

@Aaronontheweb

send a PR too if you can

got it

Natan Vivo

@nvivo

Natan Vivo

@nvivo

I opened an idea on .net fiddle for them to fix the buffering of console.log. this is required in every fiddle we do in for akka.net. would help if people voted so they can prioritize: https://dotnetfiddle.uservoice.com/forums/228764--net-fiddle-ideas/suggestions/7623540-flush-the-console-buffer-after-run

Joshua Benjamin

@annymsMthd

@Aaronontheweb one of my coworkers just showed me some AppDomain stuff. For the multinode tests wouldn't it be easier to load the child nodes up in their own app domain? It would allow us to attach a debugger alot easier

Aaron Stannard

@Aaronontheweb

@annymsMthd you can use the Child Process Debugger in Visual Studio to do the same thing

but the guy you should talk to about redoing the MultiNodeTestRunner is @smalldave

Joshua Benjamin

@annymsMthd

rgr

Aaron Stannard

@Aaronontheweb

let me get you the download link for the multi-node test runner

err

child process debugger

sorry, still on my first cup of coffee

Joshua Benjamin

@annymsMthd

lol same

Aaron Stannard

@Aaronontheweb

http://blogs.msdn.com/b/visualstudioalm/archive/2014/11/24/introducing-the-child-process-debugging-power-tool.aspx

to answer your question though, I don't know what the downsides would be of using an AppDomain - part of me think it's a better idea to leave this stuff as-is and let each node have its own independent process-level resources

but don't all .NET processes share the same threadpool anyway?

i.e. isn't the CLR threadpool a shared resource across all of them? or is that not right?

Aaron Stannard

@Aaronontheweb

ah, my bad

shared across appdomains

but not processes

damnit now I'm confused http://blogs.msdn.com/b/ericeil/archive/2009/04/23/clr-4-0-threadpool-improvements-part-1.aspx

my brain this morning http://i.imgur.com/NIOYi.gif

Aaron Stannard

@Aaronontheweb

ok, nevermind - CLR Threadpool and Threads: unique per process, but each AppDomain gets its own FIFO queue for work items

finally

Nikita Tsukanov

@kekekeks

Ehm, you just can't share a thread across processes. Whether ThreadPool is shared between AppDomains depends on CLR host. I. e. custom CLR host can even run multiple CLR threads on one native thread ( see https://msdn.microsoft.com/en-us/library/74169f59.aspx )

Haven't seen such CLR hosts, but still

Aaron Stannard

@Aaronontheweb

@kekekeks yeah I forgot my basic computer organization stuff this morning

thread is a resource of the process

should have been obvious but I drank a lot of wine last night

Nikita Tsukanov

@kekekeks

BTW, on Linux threads are processes that share address space and file descriptors

Aaron Stannard

@Aaronontheweb

literally processes (like, would they show up on ~ ps) ?

Nikita Tsukanov

@kekekeks

They have PID and you can see them in htop

Aaron Stannard

@Aaronontheweb

ah got it, so they're implemented as just what - micro processes effectively?

Nikita Tsukanov

@kekekeks

Just regular processes

Aaron Stannard

@Aaronontheweb

but with shared address space and process-level resources as the parent

Nikita Tsukanov

@kekekeks

That's why you don't use calls like fork from Mono

I think it's implemented like namespaces (i. e. groups of processes that have different network stacks, process PID space, etc)

Aaron Stannard

@Aaronontheweb

looks like we accidentally run the tests for Akka.Cluster 3 times in our builds.... FAKE picks it up three times (because it also gets used inside the multinode testkit)

and our build runner crashes on one of those runs, after successfully completing the tests a previous time

that's good to know @kekekeks

same place each time - test 48 in Akka.Cluster causes a stackoverflow inside XUnit

Aaron Stannard

@Aaronontheweb

ah... figured out why

Natan Vivo

@nvivo

does akka.net supports this? can't see any "mailbox-requirements" in the source

my-dispatcher {
  mailbox-requirement = ""CustomMailbox, AssemblyName""
}

Aaron Stannard

@Aaronontheweb

Natan Vivo

@nvivo

ok. should I open a ticket or there is no plans to support this?

Aaron Stannard

@Aaronontheweb

what's it for?

dispatchers and mailboxes are totally decoupled in Akka.NET

Natan Vivo

@nvivo

it's in the original akka docs as a way to set the mailbox in the actor

Aaron Stannard

@Aaronontheweb

one doesn't create the other anymore

you should be able to set that for an actor

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