Sorry to hear that Lihang -- please do work on Mixxx even if it is outside
of GSoC! It's a lot of fun.
Best regards,
RJ
On Fri, May 3, 2013 at 11:26 AM, <[email protected]> wrote:
> **
> Sorry to tell that I'm not gonna for GSoC against the proposal
> "Non-Blocking Database Access", as others may get better idea.
> But I will keep going with mixxx, this is a good family really.
> Good luck to the ones applying for GSoC, and hope we can do help to mixxx
> together.
>
> Regards,
> Lihang
>
> ------------------------------
>
> *From:* [email protected]
> *Date:* 2013-04-29 15:59
> *To:* Daniel Schürmann <[email protected]>
> *CC:* mixxx-devel <[email protected]>
> *Subject:* Re: Re: [Mixxx-devel] GSoC 2013 - Interested in "Non-Blocking
> Database Access"
> Hi Daniel,
>
> Thanks for your reply, I'm working on this thread and making a little
> progress now.
> Thanks to the wiki pages of MIXXX, I managed to create a branch of the
> trunk of my own on Launchpad, got the sources compiled under Ubuntu 12.04
> and started to track the database access issues that would stall the GUI.
> For the current threads that MIXXX might hava, I refer
> http://mixxx.org/wiki/doku.php/threads
> and got some hints.
> As far as I viewed the source code and did some dig using gdb, I came to
> get familiar with database access within MIXXX. I tried to locate all the
> operations utilizing 'find and grep'.
> When I issued "find . | xagrs grep 'sqlite'" in /mixxx/src,I began to
> know how the sqlite driver being loaded in mixxx.cpp.
> Then I issued "find . | xagrs grep 'm_database'" in /mixxx/src, I got to
> know almost database operations are packaged within the library/dao
> folder(playlist, track, libraryhash, crate, cue, rhymboxfeature,etc) and
> library/queryutil.h, the base model resides in library/basesqltablemodel.h.
> Finally I issued "find . | xagrs grep 'm_database.open()'", scopes get
> smaller. leaving just 6 cpp files out with 1 for test.
>
> I began to figure out all the threads now but would need some time, to
> fulfill "Non-Blocking Database Access", however, I have a draft approach
> now:
> (1) issue a new thread dedicated to do database access(something similar
> to Asynchronous I/O)
> (2) write an abstract layer with all the database operations and provide
> interfaces to other modules( something like DatabaseManager)
>
> I will work on to make a detailed approach and looking forward to your
> advices.
>
> Regards,
> Lihang
> ------------------------------
>
> *From:* Daniel Schürmann <[email protected]>
> *Date:* 2013-04-27 22:34
> *To:* licalmer <[email protected]>
> *CC:* mixxx-devel <[email protected]>
> *Subject:* Re: [Mixxx-devel] GSoC 2013 - Interested in "Non-Blocking
> Database Access"
> Hi Lihang,
>
> welcome to Mixxx!
>
> I am afraid you have to dig into the Mixxx code yourselves. You should
> find everything for a start on our wiki.
> For this experienced project, it is important to understand our problem
> well. This can be achieved by solving a library related "easy" bug on
> Launchpad. Pleas ask any specific question here or on our IRC channel, we
> will help!
>
> Kind regards,
>
> Daniel
>
>
>
> Am 27.04.2013 15:16, schrieb [email protected]:
>
> Hi All,
>
> I've been watching the mailing list for a while and get excited about
> the warmness of the community, yes, the ones crazy for music and DJ.
> I think it's time to give a brief introduction about myself and try to
> get involved:-). I'm a student from Beijing, China, now is a first-year
> graduate majoring in Computer Science. I'm familiar with Open Source
> Community, using Linux and experienced in C/C++, familiar with Matlab and
> Java and learning Python.
> We have a team to develop an application for Android three months ago,
> I'm in charge with the database operations using sqlite and network stuff,
> so I'm familiar with sqlite. As to multi-thread programming, I'm now
> learning the POSIX threading interfaces. I have not dig too deep about the
> thread model of mixxx and can't say too more about it.
> As I will try to refer to the wiki pages and also dive into the source
> code to figure it out, and hopefully will come with a draft proposal
> about "Non-Blocking Database Access", I do need suggestions, like some
> useful hints about the current thread model, etc.
>
> You can reach me via
> http://www/hustcalm.me
> or
> https://github.com/hustcalm
>
> Looking forward to your feedback and suggestions:-)
>
> Regards,
> Lihang
>
>
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