Developer's Meeting 20091013

  • Place
    • Univ. of Tokyo, Akihabara, Tokyo, Japan
    • map
  • Date
    • 2009/10/13 12:00- (JST)
  • Attendees
    • matz
    • ko1
    • yugui
    • akr
    • nobu (via Skype)
    • usa (via Skype)
    • naruse



Release Schedule

When will 1.9.2 be released?

  • The planned Christmas release date is cancelled
  • "Passing rubyspec" has been added to the requirements for releasing 1.9.2
    • How does this affect the release date?
    • Need to examine the current situation
    • ... looks feasible, perhaps?
    • either way, rubyspec will probably be a bottleneck
  • everyone should run rubyspec more often, and report any problems found (problems with ruby or rubspec are welcome)

The next preview & feature freeze

  • release preview 2 around end of October (motion passed)
  • Aim for December feature freeze (motion passed)


  • timeout issue
  • Timeout is possible in a multitude of places
  • is this an actual problem for anyone?
    • a few cases have been reported in ruby-core, what were they doing?
  • is there a need for a feature to declare a critical session with a block where Timeouts etc are delayed?
    • could pose a problem if, say, Cs were suppressed too
    • perhaps explicitly specify what to delay/suppress?
    • will continue to explore possible solutions.


  • Big5-HKSCS is done
  • Big5-UAO is being worked on by Martin, should be done in a few weeks

Regarding maintainers

  • Process for discharging maintainers
  • Some people volunteering to become maintainers:
    • want to accept to volunteers (matz)
    • but want to avoid the situation where new committers from adding strange, unveiled new features
    • makes sure they know that, as a rule, spec changes must be discussed first
    • however, the libraries they are volunteering to maintain are already stable enough
    • If the motivation behind volunteering as committers is to be able to add new features they want, they are likely to be disappointed. This needs to be considered.
    • there is a tendency for proposals for new features to be ignored because noone has the authority to reject them
    • how about introducing the concept of committers with limited rights?
    • for the moment, add them as contributors to Redmine, and have them close/reject tickets, and see how it turns out (motion passed)
    • the final to decision to accept them as committers will be made by matz

Regarding inclusion of 'ffi' in the stdlib

  • what will be using as 'ffi'?
    • libffi
  • will we be including the source of libffi?
    • in the current gem, the source is included. If the environment already has libffi, then that will be used, otherwise the included source is used.
    • if we include the source, should we always prefer that?
  • but first, will we really add it to stdlib?
    • there are problems unsolvable with dl2 (discussed later)
    • ffi uses inline assembly which makes it possible to solve those problems
  • Regarding currently unsupported platforms
    • currently works on IA64, code also exists
    • information the website is just out of date?
    • Is Windows supported?
    • supposedly works with VC with a patch
    • works on MinGW
    • the new VC (2010?) doesn't have inline assembler, so it will stop working
    • someone needs to work on supporting it, or else need to get rid of VC
    • Once issues on Windows are solved, it will be possible to add to stdlib if a maintainer is found

The dl2 problem

  • it assumes that the types of arguments are consistent, but on ia64, x86_64 etc, doubles/floats can mix so this assumption doesn't hold
  • even if the argument type issue is resolved, it's just a bunch of bits in memory when we call, so we can't tell what types are expected at CFunc#call
  • plus, information about the arguments isn't available in the CFunc
  • in dl1, although there is a precondition that they are on the stack, arguments come in still holding onto type information, so it's doable with some hard work
  • ff. gets around the issue with inline assembly

Filepath related changes win32-unicode-test

  • In the work up till kow, found out that there are major difficulties handling UTF-16LE in ruby itself, so well plan to work via UTF-8
  • This means that we need path translation functionality
  • On unix with default_interenal set, the same problem with path translation exists
  • When using a path (when accessing), we stay on the safe side and throw an error
  • For now, it's GO

(from )