[phobos] std.event / event loop for phobos

[Andrei Alexandrescu]

I don't know much about licence, but I have this question: which is 
better, libev or libevent?

Andrei

On 9/9/10 3:56 CDT, Johannes Pfau wrote:
>   On 09.09.2010 07:19, Masahiro Nakagawa wrote:
>> On Wed, 08 Sep 2010 23:53:13 +0900, Johannes Pfau
>> <johannespfau at googlemail.com>  wrote:
>>
>>>   On 08.09.2010 16:02, Masahiro Nakagawa wrote:
>>>>
>>>> I am thinking about std.event.
>>>> This module supports system-dependent APIs(kqueue, epoll, etc...) and
>>>> abstraction layer.
>>>>
>>> I think the best solution would be a wrapper / abstraction layer for
>>> libev. All of the mentioned APIs (kqueue, epoll, select...) are broken
>>> in some way, so writing a new event loop system in D will be painful and
>>> it will take a long time until it gets stable. Also libev already has
>>> support for more event sources (timer, periodic, signal, stat, ...).
>>
>> libev is a good library. I often use rev in Ruby programming.
>>
>> Can Phobos include this library?
>>
> libev is using the "Simplified BSD License"
> (http://en.wikipedia.org/wiki/BSD_licenses#2-clause_license_.28.22Simplified_BSD_License.22_or_.22FreeBSD_License.22.29).
> This license puts no restrictions on using / linking to the library, so
> using boost phobos + libev + (any license) user code should not be a
> problem. The following clause could be a problem though:
> ------------------------------------------------------------------------------------
> Redistributions in binary form must reproduce the above
> copyright notice, this list of conditions and the following
> disclaimer in the documentation and/or other materials provided
> with the distribution.
> ------------------------------------------------------------------------------------
> I know Andrei and Walter want to avoid such clauses for the standard
> library.
> But I think libev could be shipped independent of phobos, so maybe
> something like "If you want to use std.event you also need to have the
> libev library installed" could work. Then Phobos would not have to
> include the libev license. Projects using std.event and libev would
> still have to include it, though.
>
> There has also been talk about including libcurl which has a similar
> clause in the license. So maybe a general decision is needed.
>