Doc No: SC22/WG21/N2592 J16/08-0102 Date: 2008-03-14 Project: JTC1.22.32 Reply to: Robert Klarer IBM Canada, Ltd. firstname.lastname@example.org
Clamage called the meeting to order at 09:00 (GMT+8) on Monday, February 24, 2008
Caves described the arrangements and facilities for the meeting.
Clamage had the attendees introduce themselves.
Clamage reviewed the patent disclosure rules.
Nelson reviewed membership rules. Nelson then circulated the attendance list and membership list. Clamage reviewed voting rules and reviewed procedures for the meeting.
Clamage presented the agenda (document J16/07-0346 = WG21/N2476).
Motion to approve the agenda:
Each of the Working Group chairs presented their plans for the coming week.
Motion to approve the minutes (document J16/06-0323 = WG21/N2453)
Sutter reported that five countries are represented at this meeting; all five have voting status.
Sutter reviewed the plan for completion of the revision.
A liason statement from WG14/J11 to WG21/J16 regarding Attributes can be found in J16/07-0336 = WG21/N2466.
A liason statement from WG14/J11 to WG21/J16 regarding Thread Cancellation can be found in J16/07-0325 = WG21/N2455.
A POSIX liason statement to WG21 can be found in J16/08-0046 = WG21/N2536.
Plum reported that OWGV appreciated the participation of many WG21 members at the last OWGV meeting in Kona.
OWGV last met at the Carnegie Mellon Software Engineering Institute in Pittsburgh PA. They will next meet in the Netherlands, adjacent to the Spring 2008 meeting of WG14/J11.
The post-Kona draft of the WP is J16/07-0331 = WG21/N2461.
In Kona, a drafting committee and a review committee were empowered to specify the multithreading library. The result of that effort has been added to a subsequent draft, which is J16/08-0031 = WG21/N2521.
Brown read aloud a formal statement on the behalf of Fermilab:
Fermilab strongly objects to the adoption of N2522 as an official J16/WG21 Working Paper/Working Draft. Our specific objection is to "Chapter 31 Date and time library [datetime]" and to those small parts of other chapters (notably "Chapter 30 Thread support library [thread]") that make use of Chapter 31. We have no objection to any other parts of N2521. We understand that paper N2498 in the pre-meeting mailing seeks to modify much or most of Chapter 31, but we do not address that paper here; we are objecting to the adoption of N2521 on the basis of what it says today. We base our objection on a number of technical issues, most of which we have set forth in our paper N2526. Our major objections are: - a multiplicity of types introduced to represent the single idea of a duration; - the consequent need to write templates, not functions, for even simple purposes, making it very difficult to write libraries using these types; - the explosion in the number of types needed as we extend this approach to additional physical quantities. Additionally, we believe that Chapter 31's approach of introducing standard types, such as seconds and nanoseconds, is an incorrect abstraction. More importantly, we also believe that it contradicts a pre-existing International Standard, namely "International Standard 31 Quantities and units." We are fully aware that we are asking this Committee to reverse itself, but there is ample precedent for this. Moreover, the principal authors of the clause in question are themselves already seeking (in N2498) to do so. We therefore ask that Chapter 31 and all references to its contents be excised from the motion under consideration.
Motion to accept the working paper
Plum moved to amend the motion as follows:
Motion to remove chapter 31 from the current Working Draft and accept the rest. The paper will be inconsistent and incomplete. The inconsistency will be remedied in one of two ways: by addressing controversies surrounding chapter 31 in later drafts, or by removing from a Working Draft all references to chapter 31.
Plauger called the question on the motion to amend.
Support for the call:
Motion to amend.
Plauger called the question on the original motion.
Support for the call:
Nelson proposed that, if a document is produced at this meeting to be voted on at this meeting, it has to be posted to the formal motions page on the wiki. Nelson elaborated that it is not sufficient to upload the document to a subgroup page and then link to it; the document should be uploaded to the formal motions page by the time straw poll discussions commence on Friday.
Clamage reported that two names have been submitted to be Friends of the Committee:
There will be a formal motion to grant Friend of the Committee status to these individuals on Saturday.
We have three subgroups: Core, Library, and Evolution. There will be a subgroup of Evolution to deal with issues relating to concurrency.
The committee broke into subgroups at 10:30 (GMT+10).
See 10.1, below.
Friends of the Committee Move to grant the following organizations Friend of the Committee status:
J16 Liaisons Move that J16 approves the following members as liaisons to the designated committees:
Motion 1. Move we apply the resolutions to the following issues from N2494 to the C++0X Working Paper:
527, 561, 562, 563, 567, 581, 620, 621, 622, 623, 624, 661, 664, 665, 666, 674, 675, 676, 679, 680, 687, 688, 689, 693, 694, 695, 700, 703, 705, 706
Gregor indicated that he had found a problem in the proposed resolution for 688, and that the author of the resolution agreed.
Hinnant proposed an amendment to the motion, dropping issue 688 from the list of issues to be considered. Plauger agreed to the amendment.
Amended Motion 1. Move we apply the resolutions to the following issues from N2494 to the C++0X Working Paper:
527, 561, 562, 563, 567, 581, 620, 621, 622, 623, 624, 661, 664, 665, 666, 674, 675, 676, 679, 680, 687, 689, 693, 694, 695, 700, 703, 705, 706
Motion 2. Move we apply WG21/N2528 "Timed_mutex in C++0x" to the C++0X Working Paper.
Lakos requested further explanation of the reasons for the removal of timed_mutex.
Boehm responded by mentioning that it is a relatively minor component, and that it will be seldom used. Furthermore, there is a possibility that, in the future, the base mutex will support this capability. For that reason, the proposal is to defer the introduction of this capability to a TR.
Lakos suggested allowing an implementation to provide timed_mutex in the form of a typedef which my or may not have the same underlying type as the base mutex. He attributed this idea to Dietmar Kühl.
The motion did not carry.
Motion 3. Move we apply WG21/N2549 "Excision of Clause 31" the C++0X Working Paper.
Motion 4. Move we apply WG21/N2543 "STL singly linked lists (revision 3)" to the C++0X Working Paper.
Motion 5. Move we apply WG21/N2551 "A variadic std::min(T, ...) for the C++ Standard Library (Revision 2)" to the C++0X Working Paper.
Motion 6. Move we apply WG21/N2478 "A Proposal to Add typedef default_random_engine to C++0X" to the C++0X Working Paper.
Motion 7. Move we apply WG21/N2554 "The Scoped Allocator Model (Rev 2)" to the C++0X Working Paper.
Motion 8. Move we apply WG21/N2525 "Allocator-specific Swap and Move Behavior" to the C++0X Working Paper.
Motion 9. Move we apply WG21/N2559 "Nesting Exceptions" to the C++0X Working Paper.
Motion 1. Move WG21/N2546 "Removal of auto as a storage-class specifier" into the C++0X Working Paper.
Motion 2. Move WG21/N2547 "Allow atomics use in signal handlers" into the C++0X Working Paper.
Motion 3. Move WG21/N2535 "Namespace Association ("inline namespace")" into the C++0X Working Paper.
Motion 4. Move WG21/N2541 "New Function Declarator Syntax Wording" into the C++0x Working Paper.
|Seconder: Dos Reis|
Motion 5. Move WG21/N2540 "Inheriting Constructors (revision 5)" into the C++0X Working Paper.
Motion 6. Move WG21/N2544 "Unrestricted Unions (Revision 2)" into the C++0X Working Paper.
Motion 7. Move WG21/N2555 "Extended Variadic Template Template Parameters (Revision 1)" into the C++0X Working Paper.
Motion 8. Move WG21/N2550 "Lambda Expressions and Closures: Wording for Monomorphic Lambdas (Revision 4)" into the C++0X Working Paper.
See 11.1, below.
June 8-13, 2008 in Sophia Antipolis, France
Nelson reported the following mailing deadlines:
|post-meeting mailing||March 14, 2008|
|pre-Nice mailing||May 16, 2008|
The following meetings are as follows:
Motion to adjourn
|Adobe Systems||Mat Marcus||V||V||V||V||V||V|
|Adobe Systems||Sean Parent||A||A|
|Apple Computer||Howard E. Hinnant||V||V||V||V||V||V|
|Boost Consulting||Eric Niebler||A||A||A||A||A||A|
|Borland International||Alisdair Meredith||V||V||V||V||V||V|
|Dawes||Beman G. Dawes||V||V||V||V||V||V|
|Dinkumware||P. J. Plauger||V||V||V||V||V||V|
|Edison Design Group||J. Stephen Adamczyk||V||V||V||V||V||V|
|Edison Design Group||Daveed Vandevoorde||A||A||A||A||A||A|
|Edison Design Group||John H. Spicer||A||A||A||A||A||A|
|Edison Design Group||Mike Herrick||A||A||A||A||A||A|
|Edison Design Group||William M. Miller||A||A||A||A||A||A|
|Fermi Nat. Accelerator Lab||Walter E. Brown||V||V||V||V||V||V|
|Gimpel Software||James Widman||V||V||V||V||V||V|
|PremAnand Rao||Hans Boehm||V||V||V||V||V||V|
|Indiana University||Doug Gregor||V||V||V||V||V||V|
|National ICT Australia||Manfred Doudar||V||V||V||V||V||V|
|Plum Hall||Thomas Plum||V||V||V||V||V||V|
|Plum Hall||Francis W. Glassborow||A||A||A||A||A||A|
|Red Hat||Jason Merrill||V||V||V||V||V||V|
|Red Hat||Benjamin Kosnik||A||A||A||A||A||A|
|Red Hat||Ulrich Drepper||A|
|Rogue Wave Software||Martin Sebor||V||V||V|
|Roundhouse Consulting||Pete Becker||V||V||V||V||V||V|
|Sandia National Labs||K. Noel Belcourt||V||V||V||V||V|
|Sun Microsystems||Stephen D. Clamage||V||V||V||V||V||V|
|Tele Atlas||Alan Talbot||V||V||V||V||V||V|
|Texas A&M||Bjarne Stroustrup||V||V||V||V||V||V|
|Texas A&M||Jaakko Järvi||A||A||A||A|
|Zephyr Associates||Thomas Witt||V||V||V||V||V||V|
|CrystalClear Software||Jeff Garland||N||N||N||N||N|
|Digital Mars||Walter Bright||N|
|Integrable Solutions||Gabriel Dos Reis||N||N||N||N||N||N|
|Interactive Data Managed Solutions||Jens Maurer||N||N||N||N||N||N|
|Vollmann Engineering||Detlef Vollmann||N||N||N||N||N||N|