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- From: <jsh@usenix.org>
-
-
- An Update on UNIX*-Related Standards Activities
-
- June, 1990
-
- USENIX Standards Watchdog Committee
-
- Jeffrey S. Haemer, jsh@ico.isc.com, Report Editor
-
- Recent Standards Activities
-
- This editorial is an overview of some of the spring-quarter standards
- activities covered by the USENIX Standards Watchdog Committee. A
- companion article provides a general overview of the committee itself.
-
- In this article, I've emphasized non-technical issues, which are
- unlikely to appear in official minutes and mailings of the standards
- committees. Previously published articles give more detailed, more
- technical views on most of these groups' activities. If my comments
- move you to read one of those earlier reports that you wouldn't have
- read otherwise, I've served my purpose. Of course, on reading that
- report you may discover the watchdog's opinion differs completely from
- mine.
-
- SEC: Standard/Sponsor Executive Committee
-
- The biggest hullabaloo in the POSIX world this quarter came out of the
- SEC, the group that approves creation of new committees. At the April
- meeting, in a move to slow the uncontrolled proliferation of POSIX
- standards, the institutional representatives (IRs) (one each from
- Usenix, UniForum, X/Open, OSF, and UI) recommended two changes in the
- Project Authorization Request (PAR) approval process: (1) firm
- criteria for PAR approval and group persistence and (2) a PAR-approval
- group that had no working-group chairs or co-chairs. Dale Harris, of
- IBM Austin, presented the proposal and immediately took a lot of heat
- from the attendees, most of whom are working-group chairs and co-
- chairs (Dale isn't an IR, but shared the concerns that motivated the
- recommendations and asked to make the presentation.)
-
- The chair, Jim Isaak, created an ad-hoc committee to talk over the
- proposal in a less emotional atmosphere. Consensus when the committee
- met was that the problem of proliferating PARs was real, and the only
- question was how to fix it. The group put together a formal set of
- criteria for PAR approval (which John Quarterman has posted to
- comp.std.unix), which seems to have satisfied everyone on the SEC, and
- passed without issue. The criteria seem to have teeth: at least one
- of the Project Authorization Requests presented later (1201.3, UIMS)
-
- __________
-
- * UNIX is a Registered Trademark of UNIX System Laboratories in the
- United States and other countries.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 2 -
-
- flunked the criteria and was rejected. Two others (1201.1 and 1201.4
- toolkits and Xlib) were deferred. I suspect (though doubt that any
- would admit it) that the proposals would have been submitted and
- passed in the absence of the criteria. In another related up-note,
- Tim Baker and Jim Isaak drafted a letter to one group (1224, X.400
- API), warning them that they must either prove they're working or
- dissolve.
-
- The second of the two suggestions, the creation of a PAR-approval
- subcommittee, sank quietly. The issue will stay submerged so long as
- it looks like the SEC is actually using the approved criteria to fix
- the problem. [ Actually, this may not be true. Watch for developments
- at the next meeting, in Danvers, MA in mid-July. -jsq]
-
- Shane McCarron's column in the July Unix Review covers this area in
- more detail.
-
- 1003.0: POSIX Guide
-
- Those of you who have read my last two columns will know that I've
- taken the position that dot zero is valuable, even if it doesn't get a
- lot of measurable work done. This time, I have to say it looks like
- it's also making measurable progress, and may go to mock ballot by its
- target of fourth quarter of this year. To me, the most interesting
- dot-zero-related items this quarter are the growing prominence of
- profiles, and the mention of dot zero's work in the PAR-approval-
- criteria passed by the SEC.
-
- Al Hankinson, the chair, tells me that he thinks dot zero's biggest
- contribution has been popularizing profiles -- basically,
- application-area-specific lists of pointers to other standards. This
- organizing principle has been adopted not only by the SEC (several of
- the POSIX groups are writing profiles), but by NIST (Al's from NIST)
- and ISO. I suspect a lot of other important organizations will fall
- in line here.
-
- Nestled among the other criteria for PAR approval, is a requirement
- that PAR proposers write a sample description of their group for the
- POSIX guide. Someone questioned why proposers should have to do dot
- zero's job for them. The explanation comes in two pieces. First, dot
- zero doesn't have the resources to be an expert on everything, it has
- its hands full just trying to create an overall architecture. Second,
- the proposers aren't supplying what will ultimately go into the POSIX
- guide, they're supplying a sample. The act of drafting that sample
- will force each proposer to think hard about where the new group would
- fit in the grand scheme, right from the start. This should help
- insure that the guide's architecture really does reflect the rest of
- the POSIX effort, and will increase the interest of the other groups
- in the details of the guide.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 3 -
-
- 1003.1: System services interface
-
- Dot one, the only group that has completed a standard, is in the
- throes of completing a second. Not only has the IEEE updated the
- existing standard -- the new version will be IEEE 1003.1-1990 -- ISO
- appears on the verge of approving the new version as IS 9945-1. The
- major sticking points currently seem limited to things like format and
- layout -- important in the bureaucratic world of international
- standards, but inconsequential to the average user. Speaking of
- layout, one wonders whether the new edition and ISO versions will
- retain the yellow-green cover that has given the current document its
- common name -- the ugly green book. (I've thought about soaking mine
- in Aqua Velva so it can smell like Green Chartreuse, too.)
-
- The interesting issues in the group are raised by the dot-one-b work,
- which adds new functionality. (Read Paul Rabin's snitch report for
- the gory details.) The thorniest problem is the messaging work.
- Messaging, here, means a mechanism for access to external text and is
- unrelated to msgget(), msgop(), msgctl(), or any other message-passing
- schemes. The problem being addressed is how to move all printable
- strings out of our programs and into external ``message'' files so
- that we can change program output from, say, English to German by
- changing an environmental variable. Other dot-one-b topics, like
- symbolic links, are interesting, but less pervasive. This one will
- change the way you write any commercial product that outputs text --
- anything that has printf() statements.
-
- The group is in a quandary. X/Open has a scheme that has gotten a
- little use. We're not talking three or four years of shake-out, here,
- but enough use to lay a claim to the ``existing practice'' label. On
- the other hand, it isn't a very pleasant scheme, and you'd have no
- problem coming up with candidate alternatives. The UniForum
- Internationalization Technical Committee presented one at the April
- meeting. It's rumored that X/Open itself may replace its current
- scheme with another. So, what to do? Changing to a new scheme
- ignores existing internationalized applications and codifies an
- untried approach. Blessing the current X/Open scheme freezes
- evolution at this early stage and kills any motivation to develop an
- easy-to-use alternative. Not providing any standard makes
- internationalized applications (in a couple of years this will mean
- any non-throw-away program) non-portable, and requires that we
- continue to have to make heavy source-code modifications on every
- port -- just what POSIX is supposed to help us get around.
-
- To help you think about the problem, here's the way you'll have to
- write the "hello, world" koan using the X/OPEN interfaces:
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 4 -
-
- #include <stdio.h>
- #include <nl_types.h>
- #include <locale.h>
- main()
- {
- nl_catd catd;
-
- (void)setlocale(LC_ALL, "");
- catd = catopen("hello", 0); /* error checking omitted for brevity */
- printf(catgets(catd, 1, 1,"hello, world\n"));
- }
-
- and using the alternative, proposed UniForum interfaces:
-
- #include <stdio.h>
- #include <locale.h>
- main()
- {
- (void)setlocale(LC_ALL, "");
- (void)textdomain("hello");
- printf(gettext("hello, world\n"));
- }
-
- I suppose if I had my druthers, I'd like to see a standard interface
- that goes even farther than the UniForum proposal: one that adds a
- default message catalogue/group (perhaps based on the name of the
- program) and a standard, printf-family messaging function to hide the
- explicit gettext() call, so the program could look like this:
-
- #include <stdio.h>
- #include <locale.h>
- #define printf printmsg
- main()
- {
- (void)setlocale(LC_ALL, ""); /* inescapable, required by ANSI C */
- printf("hello, world\n");
- }
-
- but that would still be untested innovation.
-
- The weather conditions in Colorado have made this a bonus year for
- moths. Every morning, our bathroom has about forty moths in it.
- Stuck in our house, wanting desperately to get out, they fly toward
- the only light that they can see and beat themselves to death on the
- bathroom window. I don't know what to tell them, either.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 5 -
-
- 1003.2: Shell and utilities
-
- Someone surprised me at the April meeting by asserting that 1003.2
- might be an important next target for the FORTRAN binding group.
- (``What does that mean?'' I asked stupidly. ``A standard for a
- FORTRAN-shell?'') Perhaps you, like I, just think of dot two as
- language-independent utilities. Yes and no.
-
- First, 1003.2 has over a dozen function calls (e.g., getopt()). I
- believe that most of these should be moved into 1003.1. System() and
- popen(), which assume a shell, might be exceptions, but having
- sections of standards documents point at things outside their scope is
- not without precedent. Section 8 of P1003.1-1988 is a section of C-
- language extensions, and P1003.5 will depend on the Ada standard. Why
- shouldn't an optional section of dot one depend on dot two? Perhaps
- ISO, already committed to re-grouping and re-numbering the standards,
- will fix this. Perhaps not. In the meantime, there are functions in
- dot two that need FORTRAN and Ada bindings.
-
- Second, the current dot two standard specifies a C compiler. Dot nine
- has already helped dot two name the FORTRAN compiler, and may want to
- help dot two add a FORTRAN equivalent of lint (which I've heard called
- ``flint''). Dot five may want to provide analogous sorts of help
- (though Ada compilers probably already subsume much of lint's
- functionality).
-
- Third, more subtle issues arise in providing a portable utilities
- environment for programmers in other languages. Numerical libraries,
- like IMSL, are often kept as single, large source files with hundreds,
- or even thousands, of routines in a single .f file that compiles into
- a single .o file. Traditional FORTRAN environments provide tools that
- allow updating or extraction of single subroutines or functions from
- such objects, analogous to the way ar can add or replace single
- objects in libraries. Dot nine may want to provide such a facility in
- a FORTRAN binding to dot two.
-
- Anyway, back to the working group. They're preparing to go to ballot
- on the UPE (1003.2a, User Portability Extensions). The mock ballot
- had pretty minimal return, with only ten balloters providing
- approximately 500 objections. Ten isn't very many, but mock ballot
- for dot two classic only had twenty-three. It seems that people won't
- vote until they're forced to.
-
- The collection of utilities in 1003.2a is fairly reasonable, with only
- a few diversions from historic practice. A big exception is ps(1),
- where historic practice is so heterogeneous that a complete redesign
- is possible. Unfortunately, no strong logical thread links the
- 1003.2a commands together, so read the ballot with an eye toward
- commands that should be added or discarded.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 6 -
-
- A few utilities have already disappeared since the last draft. Pshar,
- an implementation of shar with a lot of bells and whistles, is gone.
-
- Compress/uncompress poses an interesting problem. Though the utility
- is based on clear-cut existing practice, the existing implementation
- uses an algorithm that is copyrighted. Unless the author chooses to
- give the algorithm away (as Ritchie dedicated his set-uid patent to
- public use), the committee is faced with a hard choice:
-
- - They can specify only the user interface. But the purpose of
- these utilities is to ease the cost of file interchange. What
- good are they without a standard data-interchange format?
-
- - They can invent a new algorithm. Does it make sense to use
- something that isn't field-tested or consistent with the versions
- already out there? (One assumes that the existing version has
- real advantages, otherwise, why would so many people use a
- copyrighted version?)
-
- Expect both the first real ballot of 1003.2a and recirculation of
- 1003.2 around July. Note that the recirculation will only let you
- object to items changed since the last draft, for all the usual bad
- reasons.
-
- 1003.3: Test methods
-
- The first part of dot three's work is coming to real closure. The
- last ballot failed, but my guess is that one will pass soon, perhaps
- as soon as the end of the year, and we will have a standard for
- testing conformance to IEEE 1003.1-1988.
-
- That isn't to say that all is rosy in dot-one testing. NIST's POSIX
- Conformance Test Suite (PCTS) still has plenty of problems:
- misinterpretations of dot one, simple timing test problems that cause
- tests to run well on 3b2's, but produce bad results on a 30 mips
- machine and even real bugs (attempts to read from a tty without first
- opening it). POSIX dot one is far more complex than anything for
- which standard test suites have been developed to date. The PCTS,
- with around 2600 tests and 150,000 lines of code, just reflects that
- complexity. An update will be sent to the National Technical
- Information Service (NTIS -- also part of the Department Commerce, but
- not to be confused with NIST) around the end of September which fixes
- all known problems but, with a suite this large, others are likely to
- surface later.
-
- By the way, NIST's dot one suite is a driver based on the System V
- Verification Suite (SVVS), plus individual tests developed at NIST.
- Work has begun on a suite of tests for 1003.2, based, for convenience,
- on a suite done originally for IBM by Mindcraft. It isn't clear how
- quickly this work will go. (For example, the suite can't gel until
- dot two does.) For the dot one work, NIST made good use of Research
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 7 -
-
- Associates -- people whose services were donated by their corporations
- during the test suite development. Corporations gain an opportunity
- to collaborate with NIST and inside knowledge of the test suite. I
- suspect Roger Martin may now be seeking Research Associates for dot
- two test suite development. If you're interested in doing this kind
- of work, want to spend some time working in the Washington, D.C. area,
- and think your company would sponsor you, his email address is
- rmartin@swe.ncsl.nist.gov.
-
- By the way, there are a variety of organizational and numbering
- changes happening in dot three. See Doris Lebovits's snitch report
- for details.
-
- The Steering Committee on Conformance Testing (SCCT) is the group to
- watch. Though they've evolved out of the dot three effort, they
- operate at the TCOS level, and are about to change the way POSIX
- standards look. In response to the ever-increasing burden placed on
- the testing committee, the SCCT is going to recommend that groups
- producing new standards include in those standards a list of test
- assertions to be used in testing them.
-
- Groups that are almost done, like 1003.2, will be grandfathered in.
- But what should be done with a group like dot four -- not far enough
- along that it has something likely to pass soon, but far enough to
- make the addition of major components to its ballot a real problem.
- Should this case be treated like language independence? If so,
- perhaps dot four will also be first in providing test assertions.
-
- 1003.4: Real-time extensions
-
- The base dot-four document has gone to ballot, and the ensuing process
- looks like it may be pretty bloody. Fifty-seven percent of the group
- voted against the current version. (One member speculated privately
- that this meant forty-three percent of the balloting group didn't read
- it.) Twenty-two percent of the group (nearly half of those voting
- against) subscribed to all or part of a common reference ballot, which
- would require that entire chapters of the document be completely
- reworked, replaced, or discarded. Subscribers to this common
- reference ballot included employees of Unix International and the Open
- Software Foundation, of Carnegie-Mellon University and the University
- of California at Berkeley, and of Sun Microsystems and Hewlett-
- Packard. (USENIX did not ballot similarly, but only because of lack
- of time.) Some of these organizations have never before agreed on the
- day of the week, let alone the semantics of system calls. But then,
- isn't bringing the industry together one goal of POSIX?
-
- Still, the document has not been returned to the working group by the
- technical editors, so we can assume they feel hopeful about resolving
- all the objections. Some of this hope may come from the miracle of
- formality. I've heard that over half of the common reference ballot
- could be declared non-responsive, which means that there's no
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 8 -
-
- obligation to address over half the concerns.
-
- The threads work appears to enjoy a more positive consensus. At least
- two interesting alternatives to the current proposal surfaced at the
- April meeting, but following a lot of discussion, the existing
- proposal stood largely unchanged. I predict that the threads work
- which will go to ballot after the base, dot four document, will be
- approved before it. John Gertwagen, dot four snitch and chair of
- UniForum's real-time technical committee, has bet me a beer that I'm
- wrong.
-
- 1003.5: Ada bindings and 1003.9: FORTRAN-77 bindings
-
- These groups are coming to the same place at the same time. Both are
- going to ballot and seem likely to pass quickly. In each case, the
- major focus is shifting from technical issues to the standards process
- and its rules: forming balloting groups, relations with ISO, future
- directions, and so on.
-
- Here's your chance to do a good deed without much work. Stop reading,
- call someone you know who would be interested in these standards, and
- give them the name of someone on the committee who can put them into
- the balloting group. (If nothing else, point them at our snitches for
- this quarter: Jayne Baker cgb@d74sun.mitre.org, for dot five, and
- Michael Hannah mjhanna@sandia.gov, for dot nine.) They'll get both a
- chance to see the standard that's about to land on top of their work
- and a chance to object to anything that's slipped into the standard
- that doesn't make sense. The more the merrier on this one, and they
- don't have to go to any committee meetings. I've already called a
- couple of friends of mine at FORTRAN-oriented companies; both were
- pleased to hear about 1003.9, and eager to read and comment on the
- proposed standard.
-
- Next up for both groups, after these standards pass, is negotiating
- the IEEE standard through the shoals of ISO, both getting and staying
- in sync with the various versions and updates of the base standard
- (1003.1a, 1003.1b, and 9945-1), and language bindings to other
- standards, like 1003.2 and 1003.4. (See my earlier discussion of dot
- two.) Notice that they also have the burden of tracking their own
- language standards. At least in the case of 1003.9, this probably
- means eventually having to think about a binding to X3J3 (Fortran 90).
-
- 1003.6: Security
-
- This group has filled the long-vacant post of technical editor, and,
- so, is finally back in the standards business. In any organization
- whose ultimate product is to be a document, the technical editor is a
- key person. [We pause here to allow readers to make some obligatory
- cheap shot about editors.] This is certainly the case in the POSIX
- groups, where the technical editors sometimes actually write large
- fractions of the final document, albeit under the direction of the
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 9 -
-
- working group.
-
- I'm about to post the dot six snitch report, and don't want to give
- any of it away, but will note that it's strongly opinionated and
- challenges readers to find any non-DoD use for Mandatory Access
- Control, one of the half-dozen areas that they're standardizing.
-
- 1003.7: System administration
-
- This group has to solve two problems at different levels at the same
- time. On the one hand, it's creating an object-oriented definition of
- system administration. This high-level approach encapsulates the
- detailed implementation of objects interesting to the system
- administrator (user, file system, etc.), so that everyone can see them
- in the same way on a heterogeneous environment. On the other hand,
- the protocol for sending messages to these objects must be specified
- in detail. If it isn't, manufacturers won't be able to create
- interoperable systems.
-
- The group as a whole continues to get complaints about its doing
- research-by-committee. It's not even pretending to standardize
- existing practice. I have mixed feelings about this, but am
- unreservedly nervous that some of the solutions being contemplated
- aren't even UNIX-like. For example, the group has tentatively
- proposed the unusual syntax object action. Command names will be
- names of objects, and the things to be done to them will be arguments.
- This bothers me (and others) for two reasons. First, this confuses
- syntax with semantics. You can have the message name first and still
- be object-oriented; look at C++. Second, it reverses the traditional,
- UNIX verb-noun arrangement: mount filesystem becomes filesystem mount.
- This flies in the face of the few existing practices everyone agrees
- on. I worry that these problems, and the resulting inconsistencies
- between system administration commands and other utilities, will
- confuse users. I have a recurring nightmare of a long line of new
- employees outside my door, all come to complain that I've forgotten to
- mark one of my device objects, /dev/null, executable.
-
- With no existing practice to provide a reality-check, the group faces
- an uphill struggle. If you're an object-oriented maven with a yen to
- do something useful, take a look at what this group is doing, then
- implement some of it and see if it makes sense. Look at it this way:
- by the time the standard becomes reality, you'll have a product, ready
- to ship.
-
- 1003.10: Supercomputing
-
- This group is working on things many of us us old-timers thought we
- had seen the last of: batch processing and checkpointing. The
- supercomputing community, condemned forever to live on the edge of
- what computers can accomplish, is forced into the same approaches we
- used back when computer cycles were harder to come by than programmer
- cycles, and machines were less reliable than software.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 10 -
-
- Supercomputers run programs that can't be run on less powerful
- computers because of their massive resource requirements
- (cpu/memory/io). They need batch processing and checkpointing because
- many of them are so resource-intensive that they even run for a long
- time on supercomputers. Nevertheless, the supercomputing community is
- not the only group that would benefit from standardization in these
- areas. (See, for example, my comments on dot fourteen.) Even people
- who have (or wish to have) long-running jobs on workstations, share
- some of the same needs for batch processing and checkpointing.
-
- Karen Sheaffer, the chair of dot ten, had no trouble quickly recasting
- the group's proposal for a batch PAR into a proposal that passed the
- SEC's PAR-approval criteria. The group is modeling a batch proposal
- after existing practice, and things seem to be going smoothly.
-
- Checkpointing, on the other hand, isn't faring as well. People who
- program supercomputers need to have a way to snapshot jobs in a way
- that lets them restart the jobs at that point later. Think, for
- example, of a job that needs to run for longer than a machine's mean-
- time-to-failure. Or a job that runs for just a little longer than
- your grant money lasts. There are existing, proprietary schemes in
- the supercomputing world, but none that's portable. The consensus is
- that a portable mechanism would be useful and that support for
- checkpointing should be added to the dot one standard. The group
- brought a proposal to dot one b, but it was rejected for reasons
- detailed in Paul Rabin's dot one report. Indeed, the last I heard,
- dot-one folks were suggesting that dot ten propose interfaces that
- would be called from within the program to be checkpointed. While
- this may seem to the dot-one folks like the most practical approach,
- it seems to me to be searching under the lamp-post for your keys
- because that's where the light's brightest. Users need to be able to
- point to a job that's run longer than anticipated and say,
- ``Checkpoint this, please.'' Requiring source-code modification to
- accomplish this is not only unrealistic, it's un-UNIX-like. (A
- helpful person looking over my shoulder has just pointed out that the
- lawyers have declared ``UNIX'' an adjective, and I should say
- something like ``un-UNIX-system-like'' instead. He is, of course,
- correct.) Whatever the interface is, it simply must provide a way to
- let a user point at another process and say, ``Snapshot it,'' just as
- we can stop a running job with job control.
-
- 1003.12: Protocol-independent interfaces
-
- This group is still working on two separate interfaces to the network:
- Simple Network Interface (SNI) and Detailed Network Interface (DNI).
- The January meeting raised the possibility that the group would
- coalesce these into a single scheme, but that scheme seems not to have
- materialized. DNI will provide a familiar socket- or XTI/TLI-like
- interface to networks, while SNI will provide a simpler, stdio-like
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 11 -
-
- interface for programs that don't need the level of control that DNI
- will provide. The challenge of SNI is to make something that's simple
- but not so crippled that it's useless. The challenge of DNI is to
- negotiate the fine line between the two competing, existing practices.
- The group has already decided not to use either sockets or XTI, and is
- looking at requirements for the replacement. Our snitch, Andy
- Nicholson, challenged readers to find a reason not to make DNI
- endpoints POSIX file descriptors, but has seen no takers.
-
- 1003.14: Multiprocessing
-
- The multiprocessing group, which had been meeting as sort of an ad-hoc
- spin-off of the real-time group, was given PAR approval at the April
- meeting as 1003.16 but quickly renamed 1003.14 for administrative
- reasons. They're currently going through the standard set of jobs
- that new groups have to accomplish, including figuring out what tasks
- need to be accomplished, whom to delegate them to, and how to attract
- enough working-group members to get everything done. If you want to
- get in on the ground floor of the multiprocessing standard, come to
- Danvers and volunteer to do something.
-
- One thing that needs to be done is liaison work with other committees,
- many of which are attacking problems that bear on multiprocessors as
- well. One example is dot ten's checkpointing work, which I talked
- about earlier, Checkpointing is both of direct interest to dot
- fourteen, and is analogous to several other problems the group would
- like to address. (A side-effect of the PAR proliferation problem
- mentioned earlier is that inter-group coordination efforts go up as
- the square of the number of groups.)
-
- 1201: Windows, sort of
-
- Okay, as a review, we went into the Utah meeting with one official
- group, 1201, and four unofficial groups preparing PARs:
-
- 1. 1201.1: Application toolkit
-
- 2. 1201.2: Recommended Practice for Driveability/User Portability
-
- 3. 1201.3: User Interface Management Systems
-
- 4. 1201.4: Xlib
-
- By the end of the week, one PAR had been shot down (1201.3), one
- approved (1201.2), and two remained unsubmitted.
-
- The 1201.4 par was deferred because the X consortium says Xlib is
- about to change enough that we don't want to standardize the existing
- version. I'll ask, ``If it's still changing this fast, do we want to
- even standardize on the next version?'' The 1201.1 PAR was deferred
- because the group hasn't agreed on what it wants to do. At the
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 12 -
-
- beginning of the week, the two major camps (OSF/Motif and OPEN LOOK)*
- had agreed to try to merge the two interfaces. By mid-week, they
- wouldn't even sit at the same table. That they'd struck off in an
- alternative, compromise direction by the end of the week speaks
- extremely highly of all involved. What the group's looking at now is
- a toolkit at the level of XVT**: a layer over all of the current,
- competing technologies that would provide portability without
- invalidating any existing applications. This seems like just the
- right approach. (I have to say this because I suggested it in an
- editorial about six months ago.)
-
- The 1201.3 PAR was rejected. Actually, 1201 as a whole voted not to
- submit it, but the people working on it felt strongly enough that they
- submitted it anyway. The SEC's consensus was that the field wasn't
- mature enough to warrant even a recommended practice, but the work
- should continue, perhaps as a UniForum Technical Committee. The study
- group countered that it was important to set a standard before there
- were competing technologies, and that none of the attendees sponsoring
- companies would be willing to foot the bill for their work within
- anything but a standards body. The arguments weren't persuasive.
-
- The 1201.2 PAR, in contrast, sailed through. What's interesting about
- this work is that it won't be an API standard. A fair fraction of the
- committee members are human-factors people, and the person presenting
- the PAR convinced the SEC that there is now enough consensus in this
- area that a standard is appropriate. I'm willing to believe this, but
- I think that stretching the net of the IEEE's Technical Committee on
- Operating Systems so wide that it takes in a human-factors standard
- for windowing systems is overreaching.
-
- X3
-
- There are other ANSI-accredited standards-sponsoring bodies in the
- U.S. besides the IEEE. The best known in our field is the Computer
- Business Equipment Manufacturers' Association (CBEMA), which sponsors
- the X3 efforts, recently including X3J11, the ANSI-C standards
- committee. X3J11's job has wound down; Doug Gwyn tells me that
- there's so little happening of general interest that it isn't worth a
- report. Still, there's plenty going on in the X3 world. One example
- is X3B11, which is developing a standard for file systems on optical
- disks. Though this seems specialized, Andrew Hume suggests in his
-
- __________
-
- * OSF/Motif is a Registered Trademark of the Open Software
- Foundation.
- OPEN LOOK is a Registered Trademark of AT&T.
-
- ** XVT is a trademark of XVT Software Inc.
-
- June, 1990 Standards Update Recent Standards Activities
-
-
- - 13 -
-
- report that this work may eventually evolve into a standards effort
- for file systems on any read-write mass storage device. See the dot-
- four common reference ballot for the kind of feelings new file-system
- standards bring out.
-
- I encourage anyone out there on an X3 committee who thinks the
- committee could use more user exposure and input to file a report.
- For example, Doug Gwyn suggests that there is enough activity in the
- C++ standards world to merit a look. If anyone out there wants to
- volunteer a report, I'd love to see it.
-
- June, 1990 Standards Update Recent Standards Activities
-
- Volume-Number: Volume 20, Number 66
-
-