I would like to announce that I've ported Mecca [1] to macOS. It was merged in May but I never bothered to announce it until now. Everything except the file watcher has been ported and is working. Unfortunately the unit tests fail in Travis CI, but they pass locally and in Circle CI. Something related to a timer that is failing.

When it comes to the implementation, it's structured so that the new code will work on any Darwin platform (it's only tested on macOS). In this process I also moved some platform specific code for Linux to the `mecca.platform` and `mecca.reactor.platform` packages. This means that all platform specific code lives in these two packages and there are no version blocks outside of these packages (as far as I could find). The version blocks that exist are very few, due the the platform specific code lives in their own files. They're just needed to import the correct platform specific file. I think this turned out really nice compared to the mess that's in druntime, where most files are littered with version blocks.

The Darwin implementation uses kqueue, which is available on other platforms as well, like the various BSD flavors. The kqueue specific code is guarded with its own version block to make it possible to reuse on other platforms, if someone wants to port Mecca to a new platform. Some timer related code is implemented using libdispatch on Darwin, but I think this could be implemented using kqueue as well. I think libdispatch is available on *BSD as well, but might not be installed by default.

[1] https://github.com/weka-io/mecca

-- 
/Jacob Carlborg

On Wednesday, 7 August 2019 at 11:01:55 UTC, Jacob Carlborg wrote:
> I would like to announce that I've ported Mecca [1] to macOS.

> [1] https://github.com/weka-io/mecca

I'm not familiar with Mecca. What is a Container/reactor library?

On 08/07/2019 10:45 AM, Ron Tarrant wrote:
> On Wednesday, 7 August 2019 at 11:01:55 UTC, Jacob Carlborg wrote:
>> I would like to announce that I've ported Mecca [1] to macOS.
> 
>> [1] https://github.com/weka-io/mecca
> 
> I'm not familiar with Mecca. What is a Container/reactor library?
> 

DConf 2018 presentation says

Weka.io is a small start-up company producing a hyper-scalable high performance software only (BYOH) storage system written in D. During our work we've created a rather rich set of run time support tools for our system that are not, on their own, related to our specific product, or even storage at large. Mecca is a stand-alone library providing those tools. This lecture goes over the highlights of what Mecca contains, and some cool uses for it.

  http://dconf.org/2018/talks/shemesh.html

Ali

On 2019-08-07 19:45, Ron Tarrant wrote:

> I'm not familiar with Mecca. What is a Container/reactor library?

I guess it's a reactor library. I see it as a library providing fiber based non-blocking IO. It also provides containers, logging, reflection, serialization and a bunch of other things that are usually found in a standard library.

-- 
/Jacob Carlborg