05:08 <FromGitter> <postmodern:matrix.org> @didactic-drunk: https://github.com/kubo39/syscall.cr another repo to recruit for crystal-posix

05:33 <FromGitter> <szabgab> See the example in this pull-request https://github.com/kemalcr/kemalcr.com/pull/48

07:05 <FromGitter> ... practices to emerge over time that may turn in to a semi official guide. :shrug:

07:05 <FromGitter> <didactic-drunk> FYI crystal-posix is only a collection of shards where people can look in one place for posix like (or possibly native) functionality. Whatever packages you import I consider them owned by you. If I disagree I'll complain loudly via PR/pull but ultimately the decision is the package owners. The only code guide so far is: Fail on compile on unsupported systems instead of runtime errors. I expect best

07:41 <yxhuvud> postmodern: There seems to be native raw syscall support coming in crystal 1.1 though, as part of the uring work.

07:46 <FromGitter> <didactic-drunk> Guess I shouldn't have contacted kubo39

09:34 <FromGitter> <postmodern:matrix.org> @yxhuvud curious what the API will look like?

09:39 <yxhuvud> postmodern: see https://github.com/crystal-lang/crystal/pull/10777/files

09:42 <FromGitter> <postmodern:matrix.org> ah interesting, you define the syscalls first instead of passing arguments to `syscall(2)`

14:24 <FromGitter> <asterite> Whats the benefit of syscall? Can we avoid using it? It's bad for something I'm working on

14:25 <FromGitter> <asterite> Actually, nevermind

15:54 <FromGitter> <alex-kampa> I'm trying to figure out the simplest way to listen on 2 separate tcp ports, is this going to work: ⏎ `spawn do ⏎ while client = server1.accept? ⏎ ⏎ ```spawn process2(client)``` ... [https://gitter.im/crystal-lang/crystal?at=60ccc1aec705e53c1c9bff2e]

15:57 <FromGitter> <naqvis> Crystal without `preview_mt` is single threaded, so as long as you call `server1.listen` it will block the main thread and code below will never get a chance to execute

15:57 <FromGitter> <Blacksmoke16> use nginx to listen and forward to the crystal app :P

15:58 <FromGitter> <naqvis> either you go with parallelism (i.e. via `-Dmt_preview`) or better go with two separate process each listening on its own port

15:59 <FromGitter> <naqvis> or better as @Blacksmoke16 suggested, better to with some battle tested servers as proxy in-front

16:45 <frojnd> Hi there

16:47 <frojnd> I just noticeds under project/lib I have files of shards I removed from shard.yml How do I clean not used shard files?

16:48 <FromGitter> <Blacksmoke16> `shards prune` would prob d oit

16:48 <FromGitter> <Blacksmoke16> do it

16:49 <frojnd> Thank you

18:01 <Guest59> Hey all. Is there a way to emulate similar behavior to dynamic function calls on c? (Ex https://stackoverflow.com/a/840504)

18:02 <Guest59> I've been trying to use Proc.new(pointer-addr, etc) but I'm getting hung up on the second parameter

18:04 <Guest59> I have the functions address stored in a pointer object already, but I can't figure out how to call it

18:06 <yxhuvud> You better post a short code example of what you want to acheive.

18:10 <Guest59> Hmm I'll have to check back later. I'm mobile at the moment, but I may have figured it out after looking at some more proc examples

18:14 <Guest59> But maybe someone could shine some light on this proc methods second parameter

18:14 <Guest59> .new(pointer : Pointer(Void), closure_data : Pointer(Void)) : Pointer(Void), closure_data : Pointer(Void))

18:14 <Guest59> Well that didn't paste good, but what is clousure_data

21:33 <FromGitter> <watzon> Guest59: Hard to know without some context. Where is this method defined?

21:51 <elf_fortrez> i guess in the client

22:52 <FromGitter> <postmodern:matrix.org> @asterite: raw syscalls are mostly only useful for accessing OS-specific syscalls that libc doesn't support. Use case is mostly for libraries, so raw `sysacall(2)` access could be provided via a shard.

22:52 <FromGitter> <HertzDevil> if the proc comes from crystal it contains the closure data

22:52 <FromGitter> <HertzDevil> if the proc comes from c just use nil (i think)

22:53 <FromGitter> <postmodern:matrix.org> @asterite: but I guess the linux io_uring stuff requires raw `syscall(2)` access for a few IO syscalls from crystal's stdlib.