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John Gilmore, Ashland, MA 01721 - USA
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artin <
000433f07816-dmarc-requ...@listserv.ua.edu> wrote:
> On 2015-05-08 13:06, John Gilmore wrote:
> > I have not done this in a very long time, but it used to be be possible
> to
> > give a second version of FOO a unique alias that could then be linked to.
> >
> Does that
> its own)?
>
> Charles
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The transition was from 24- to 31-bit addressing. Apart from this quibble,
Paul is right here. "Unused" fields should be initialized innocuously
and, usually, marked as reserved. (From time to time there is of course a
case for making user fields available in control blocks.)
--Jo
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cts.
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Original Message-
> From: Robert Prins
> To: IBM-MAIN
> Sent: Tue, Feb 24, 2015 2:54 pm
> Subject: Re: Enterprise PL/1 performance
>
>
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... groan... ;-)
>
> Groete / Greetings
> Elardus Engelbrecht
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I found AMBLIST to be very
> helpful in this task!
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that lists these IDRs. Determining its
name is left as an exercise for the reader.
John Gilmore, Ashland, MA 01721 - USA
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Perhaps worth noting explicitly is that the deficiencies of the RYO
concatenation '(c)' or '(C)' do not apply to the single-character
version '©', which retains its international usefulness.
John Gi
with the 5th,
6th, 7th, and 8th characters of source.
John Gilmore, Ashland, MA 01721 - USA
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down
as another instance of it is allocated and popped up/reinstated when
an instance of that variable is freed, but this is incidental
behavior, and no sane person would try to manage a PL/I stack by
exploiting it: much simpler, lower-overhead schemes for doing so are
readily implemented.
John
supported; but they are available to those who wish
to use them.
Note also that the chief value of the PL/I attributes ASSIGNABLE and
NONASSIGNABLE is in the characterization of procedure parameters.
John Gilmore, Ashland, MA 01721 - USA
PL/I provides the storage class controlled for implementing anchors
and the like in reentrant routines. C and its sequelæ did/do not, and
this lacuna led to the need for such uglinesses as writable static.
--
John Gilmore, Ashland, MA 01721 - USA
y and helpfully. This one
is only a minor clarification.
John Gilmore, Ashland, MA 01721 - USA
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My implicit qualification to z/Architecture contexts should have been
explicit, Elsewhere rotating DASD continues in significant use. It
is, however, all but irrelevant to the current discussion
John Gilmore, Ashland, MA 01721 - USA
so, the reductionist game of describing
"underlying reality" can be played over and over again, down to the
quantum-electrodynamic level; but what must be programmed for, in a
z/OS environment, is a notional. ECKD device
John Gi
(inapplicable to your shop) rationale for them.
My own experience strongly suggests that HC recommendations are too
often ignored by the ignorant, that inattention to them is much more
problematic than is time wasted on marginal ones.
John Gilmore, Ashland, MA 01721 - USA
yself make,
which strongly suggests that there is one available on the internet;
but I do not have a URL for it at hand.
John Gilmore, Ashland, MA 01721 - USA
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**
> ** As the answer, master did "rm -rif" on the programmer's home**
> ** directory. And then the C programmer became enlightened... **
> ** **
> ** Tomasz Rola mailto:tomasz_r...@bigfo
owing
hardware at problems, has been around in the mainframe world for
decades. IBM salesmen used to call the customer CIOs who used it
routinely "hardware hawks", perhaps still do. They were much
appreciated, though not much respected.
John Gilmore, Ashland,
t;
but it opens Google to suspicions of low-level venality that may well
be totally absent.
John Gilmore, Ashland, MA 01721 - USA
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. . .
are used, as I learned to to my sorrow on another occasion.
John Gilmore, Ashland, MA 01721 - USA
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n 11/30/14, John Gilmore wrote:
> About Linker IDENTIFY control statement Paul Gilmartin wrote
>
> | Can this information be supplied from HLASM (but
> | this would be harder for us to automate.)
>
> The answer is yes. The only sequencing requirement is that a
> sections IDENTIFY
formats the text of an IDENTIFY control statement as the value of
a seqcharacxter
John Gilmore, Ashland, MA 01721 - USA
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s the system status index for the entire output load module
or program object. Multiple IDRs, each providing 40 bytes of
information for load modules or 80 bytes of information for program
objects, can be supplied for each section (CSECT, RSECT, or
labeled-common block).
John Gilmore, Ashlan
portability of assembly language without its
expressive power.
John Gilmore, Ashland, MA 01721 - USA
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What is a non-static constant? What is the rationale for, say, an
automatic one?
Named and unnamed constants, literals, should properly be treated as a
separate storage class
John Gilmore, Ashland, MA 01721 - USA
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anyway
coming ineluctably; and the "et futuris" portion of the old prophecy
is, at best, highly problematic.
John Gilmore, Ashland, MA 01721 - USA
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one of the
prefixes S | U, which are/were redundant and would until recently
have been perceived as [not wrong certainly but] unidiomatic.
John Gilmore, Ashland, MA 01721 - USA
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It was not I. I did not, that is, have such an ABEND. The only
problems I encountered with Enterprise COBOL 5.1 were, in the event,
already documented ones.
John Gilmore, Ashland, MA 01721 - USA
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different matter.)
David Crayford deserves our thanks for making Lua available, and his
enthusiasm is entirely understandable. Assuming that this
implementation is used, as I hope it will be, we shall know better a
year or so hence just how much better it is than the REXX
implementation he deplo
to be made for each class of exceptions, and such requests
were sometimes denied. Anciently, these exceptions were noted in PLMs
and ELs. In this OCO era less is known about them.
John Gilmore, Ashland, MA 01721 - USA
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.
John Gilmore, Ashland, MA 01721 - USA
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valuable. It reduces the need for mode switching and its
associated prologues and epilogues, if nothing else.
John Gilmore, Ashland, MA 01721 - USA
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The separate-sign-and-magnitude representation of packed decimal was
inherited from IBM's decimal machines, the IBM 705 and its sequelæ.
It was of bone thrown to business users, who with the Systerm/360 were
being moved to a 'do everything' binary machine.
John Gilmore, Ashland,
e
either the NOTRUNC with a picture clause or COMPUTATIONAL-5 without a
picture clause will, or at least can, yield the highest-performance
code. Much depends upon the OPT() value you specify.
In general truncations to decimal digits are a bad, even diseased,
idea for binary data.
John Gilmore, Ashla
t the gods would punish in the same swift, condign fashion.
John Gilmore, Ashland, MA 01721 - USA
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view that some other posters have
misunderstood this 'deficiency' and the nature of optimization in
general.
John Gilmore, Ashland, MA 01721 - USA
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Oversimplifying only a little, program objects are almost always a bit
bigger than the corresponding load modules, and they can
bedramaticallyb so when significant blocks of storage are initialized
with constants.
John Gilmore, Ashland, MA 01721 - USA
Just so! Indeed, just as, before the union with Romania anyway, the
men of Bessarabia were of unassailable valor and its women of were of
unassailable virtue.
John Gilmore, Ashland, MA 01721 - USA
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very like this, the chief differences among them being in
whether the language of the messages emitted when an unreachable busy
block is found is peremptory or polite..
John Gilmore, Ashland, MA 01721 - USA
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use the compiler is
> no longer doing what it used to do. We intend to open a PMR in the morning
> and see what response that yields.
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"characters" and others are not is, however, a supremely
silly one.
John Gilmore, Ashland, MA 01721 - USA
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COBOL programmers, who are too often
without formal analytic skills.
John Gilmore, Ashland, MA 01721 - USA
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decisions to do so.
John Gilmore, Ashland, MA 01721 - USA
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cit operations that use MAX, MIN, or both are available
for performing such operations where, exceptionally, they are
appropriate.)
John Gilmore, Ashland, MA 01721 - USA
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without interest.
All of them do.
John Gilmore, Ashland, MA 01721 - USA
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but I do judge that,
even with the hype discounted heavily, and with Iphone users
appropriately reassured, exploits that make use of this vulnerability
will be numerous and costly.
John Gilmore, Ashland, MA 01721 - USA
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in firmware, will be difficult to patch everywhere they occur
even after they have been identified.
John Gilmore, Ashland, MA 01721 - USA
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through 7
Ubuntu 10.04 LTS, 12.04 LTS, and 14.04 LTS
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represented as being.
Are we perhaps dealing here yet again with atrophied skill sets? With
people who no longer know how to use the facilities that IBM makes
available to them? With systems programmers who are non-programmers?
John Gilmore, Ashland, MA 01721 - USA
Substantive concern about exploits is minimal in many z/OS shops;
concern about looking bad to management is not. I chose what I judged
would be the more persuasive argument for keeping oneself informed.
John Gilmore, Ashland, MA 01721 - USA
ement questions about them.
John Gilmore, Ashland, MA 01721 - USA
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Pierre,
More context would be helpful.
John Gilmore, Ashland, MA 01721 - USA
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My point was a different one: Service Request Block and Selective
Reenlistment Bonus share the acronym SRB. Was once of them named in
"reminiscential evocation" of the other. I judge not, but who knows?
John Gilmore, Ashland, MA 0
I suspect that this particular 'resurrection' is Shmuel's and not
IBM's, but who knows?
John Gilmore, Ashland, MA 01721 - USA
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My profound apologies to Mr Perryman.
The more outré post was not from him but from J R.
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xpect that some help would be
forthcoming, and it was.
Moreover, Mr Perryman's 'solution' does not impress me. It makes
several arguable, even dubious assumptions. This and other of his
posts exhibit a regrettable posture: he too often says more than he
knows.
John Gilmore, Ash
#x27;40' is a blank in EBCDIC;
the equivalent ASCII space character has the value x'20'.
Taken alone and out of a specific context hexadecimal values are
ambiguous. They are not, however, bad, old-fashioned, or uncool. It
is just that they are s
The term 'character set' is now so widely used as to be indispensable.
It is my guess that the use of the unqualified term 'character' is
already obsolescent outside of those now rare situations in which
context completely disambiguates it
John Gilmore, Ash
tem productivity facility.
This practice is perhaps a sin against good language: it dilutes
precision; but it does not strike me as reprehensible. IBM's concern
to protect its sometimes considerable investments in existing acronyms
is entirely understandable.
John Gilmore, Ashland, MA 017
IBM HFP;
and, as others have pointed out, a machine that did native-mode
hexadecimal arithmetic, even addressing, could be constructed. That
hypothetical artefact would not, however, be a z/Architecture machine.
John Gilmore, Ashland, MA 01721 - USA
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just what that is.
John Gilmore, Ashland, MA 01721 - USA
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Confounding a carboxyl group, COOH, with a hydroxyl group, OH, is a
chemical lapse akin to the programming lapse of confounding a stack
with a queue, understandable in some situations but never excusable.
John in therefore unexcused.
John Gilmore, Ashland, MA 01721 - USA
No, Shmuel was correct: ehanol/ethyl alcohol has the equivalent
chemical formulæ C2H5OH or C2H6O.
John Gilmore, Ashland, MA 01721 - USA
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pigs, mermaids, stray dogs, those drawn with a very fine
camel's hair brush, those that resemble flies from a distance, . . .}
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stead. He can certainly do so too,
but why?
John Gilmore, Ashland, MA 01721 - USA
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these contexts
are very special ones.)
John Gilmore, Ashland, MA 01721 - USA
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Paul,
You have now raised some questions that I cannot give you full answers
to without some further experimentation. More later but quite soon.
John Gilmore, Ashland, MA 01721 - USA
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parametrically. Halfword alignment is
irrelevant in all of these cases. SBCS, DBCS, or MBCS. (A
character-set element must of course begin on some byte boundary, but
this 'restriction' is not really an interesting one.)
John Gilmore, Ashland, MA 0
it differently; and even if
they do not they are entitled to have their fun with it.
John Gilmore, Ashland, MA 01721 - USA
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om London to Paris via Okahoma
City; but they are ugly resource hogs. Worse, they perpetuate
ignorance of these AMs.
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ng system; and 'user' meant
everything else, so that, for example, compile- and execution-time
ABEND codes for many IBM-supplied language processors produced user,
four decimal-digit, ABEND codes.
This distinction was a useful one, but I suppose that it is now too
late to try to reëstablish
ay be replaced
wherever they can be by PDSE-resident program objects.
John Gilmore, Ashland, MA 01721 - USA
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Consult the archives. This topic has been hashed and rehashed here many times.
Briefly, there is still an advantage to be obtained from allocating
storage for old-style PDS load-module libraries in CYL units. This
advantage does not, however, obtain for PDSE program-object libraries.
John
view. It would be agreeable if others still
found some at least of his posts relevant and helpful.
John Gilmore, Ashland, MA 01721 - USA
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=NEW datasets before rerunning it. It was standard
practice to restore the status quo ante by doing so before retrying
the SYSGEN, and there are analogous situations in which this should
still be done. A tabula rasa is unproblematic, and the deletion of a
non-existent data set is an innocuous ope
has already pointed out,
it does nothing itself and wots not of VSAM---to trigger the deletion
of a VSAM dataset identified in a JCL DD statement.
Use IDCAMS instead!
John Gilmore, Ashland, MA 01721 - USA
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ords, and
bureaucracies, while perhaps inevitable, is at best deleterious.
Several consulting firms, the usual suspects, are now offering
'webinars' in refactoring.
So yes, cargo cults.
John Gilmore, Ashland, MA 01721 - USA
---
ll it block, then
strucp = addr(block) ;
permits the storage beginning at the address of block to be mapped as
an instance of struc.
Note that these statements do NOT in general initialize storage,
though the allocate statement can do so if the elements of struc have
the initial attribute.
John Gi
/08/lorem-ipsum-of-good-evil-google-china/
>
> Charles
>
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x27;---are prescient in this context.
John Gilmore, Ashland, MA 01721 - USA
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My apologies. I am a subscriber, but I understood that papers were
accessible for a month after their publication.
I will be more careful in the future. Ramiro, whom I thank, should
not been required to do my work for me.
John Gilmore, Ashland, MA 01721 - USA
controlling for surgeon
effects.
Good luck in any case!
John Gilmore, Ashland, MA 01721 - USA
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f the best supercomputer emulations of
networks-of-neurons behavior.
We in fact have something important here; the PR furor was
appropriate. A shoe-box sized "brain", one that doesn't have the
power requirements of New York's five boroughs, may now be in the womb
of time.
John Gi
between reinfection and
recrudescence may sometimes be difficult or impossible to make.)
John Gilmore, Ashland, MA 01721 - USA
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iting out the phrase 'alphabetic or numeric'
repeatedly. Like Paul Gilmartin, I have sometimes found myself
lamenting the absence of a briefer locution for 'load module or
program object'; in this case, however, I suspect that making one
av
ure that it would be
perspicuous for those who do not write assembly language.
John Gilmore, Ashland, MA 01721 - USA
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#x27;; and, my favorite, Persians say
'napochte', not cooked.
Locutions like these are almost never portable. They need to be
learned on the ground.
John Gilmore, Ashland, MA 01721 - USA
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My preceding post could have been worded more felicitously: one 3390
geometry had/has a notional track size of 56664 bytes and 16 tracks
per cylinder. A half-track block for it is thus 28332 bytes in size,
and this is certainly less than 32760.
John Gilmore, Ashland, MA 01721 - USA
rounded down to the nearest fullword multiple.
It is silent about half-track blocks for any "current" DASD geometry,
which are in fact alluded to favorably elsewhere in the same post.
John Gilmore, Ashland, MA 01721 - USA
-
s in which it
is now too common. (There may of course be an inside, coterie joke
embedded in it: The high artificiality of the choice of 'H' and the
second 'I' from 'inheritance' for inclusion in an acronym is
suspicious.
ave occurred to me; but it is a suggestive one.
John Gilmore, Ashland, MA 01721 - USA
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My earlier point about the use of PDSEs ought perhaps to have been
made more explicitly. They count as and are processed as only one
extent, As Lizette has already noted. Except for the system libraries
that cannot [yet?] be PDSEs, every other library should be one.
John Gilmore, Ashland, MA
y now occupy with some provision for growth.
John Gilmore, Ashland, MA 01721 - USA
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I have some of the feelings that my father would have had finding
himself in agreement with George Sokolsky, but Shmuel is clearly
right.
The issues involved badly needed to be disentangled at the outset of
these discussions, not late and inter alia.
John Gilmore, Ashland, MA 01721 - USA
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