Some time ago, IO accounting was added for the library
and exploited by the ps program. This patch just plays
a little catch-up & adds similar functionality to top.
[ and we also finally get around to incrementing the ]
[ rcfile id which should have already been done when ]
[ the smaps fields were added or, at least, with USS ]
Reference(s):
. added IO accounting to ps program
commit 8baf8eeab4
. added IO accounting to library
commit a7afe06e6f
Signed-off-by: Jim Warner <james.warner@comcast.net>
We're just following the ps program's lead introducing
a new 'USS' field to represent the non-swapped portion
of physical memory ('RSS') not shared by another task.
Signed-off-by: Jim Warner <james.warner@comcast.net>
In the patch referenced below, 2 potential abends were
fixed both of which involved 'alternate display mode'.
The root cause of those abends was a negative value in
the 'begnext' field for other than the current window.
And while that potential is fixed for now the existing
code almost invites such problems again in the future.
So, this patch will remove any temptation to name some
other window in the 'mkVIZrow1' macro. And, since that
macro is not the only source of 'begnext' changes, the
'mkVizrowX' is being added to identify such occasions.
[ and for symmetry i've added a 'mkVIZyes' macro and ]
[ ameliorated an otherwise surreptitious assignment! ]
Reference(s):
commit 8281ac4f98
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit will address potential abends upon leaving
the windows help or color mapping screens and invoking
alternate display mode ('A'). It only happens if that
current window was changed with multiple 'a'/'w' keys.
So now, rather than leaving a trail of negative values
in the 'begtask' field, compliments of that win_select
function, we'll remove the mkVIZrow1 macro. Henceforth
it will be issued just once per user interaction. Thus
a promise of 'Curwin' only being impacted is restored.
[ my thanks to Vladimir Chren for reporting this bug ]
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/210https://gitlab.com/procps-ng/procps/-/merge_requests/135
Discovered by:Vladimir Chren <vladimir.chren@gmail.com>
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ of course, we had to renumber most existing fields ]
[ with these additions. plus, some typos were fixed. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
My, how time flies. Here we are finally attending to a
2 year old issue at long last (well, at least top is).
In truth, this change was prompted by that more recent
issue #201 and simply represents my initial picks from
among those available with the new library provisions.
Note: we have to bump that rcfile version whenever new
fields are added. That will mean older top programs no
longer can read this top's rcfile. But that's Ok since
top offers a warning before replacing an older rcfile.
Doubtless, more smaps_rollup fields will be introduced
under top as we get more experience with this feature.
However, any such usage comes with tremendoud costs as
was reported for the previous patch and repeated here:
Here is a small preview of just what you will discover
when using this command line: time top/top -d0 -n1000.
------------------------------------ as a regular user
with only PID + RES (statm)
real 0m2.605s
user 0m1.060s
sys 0m1.377s
with only PID + RSS (smaps)
real 0m26.397s 10x more costly
user 0m1.253s
sys 0m24.915s
----------------- as a root (thus smaps for all tasks)
with only PID + RES (statm)
real 0m2.651s
user 0m1.177s
sys 0m1.286s
with only PID + RSS (smaps)
real 0m33.040s 12x more costly
user 0m1.256s
sys 0m31.533s
Reference(s):
. top/ps: add support for PSS reporting
https://gitlab.com/procps-ng/procps/-/issues/112
. ps: expose shared/private memory separately
https://gitlab.com/procps-ng/procps/-/issues/201
Signed-off-by: Jim Warner <james.warner@comcast.net>
In anticipation of adding some smaps_rollup stuff, our
end-of-job report will now offer some insight into the
current unused entries for a window's fieldscur array.
Signed-off-by: Jim Warner <james.warner@comcast.net>
With that commit referenced below, which preserved the
'4' and + '!' toggles in the rcfile, this VER_J_RCFILE
macro was made superfluous. But, it was never removed.
Reference(s):
commit b46af6d213
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch is ported from a merge request shown below,
and the following represents the original commit text.
------------------------------------------------------
top: In the bye_bye function, replace fputs with the write interface.
When top calls malloc, if a signal is received, it will
call sig_endpgm to process the signal. In the bye_bye function, if the
-b option is enable, the Batch variable is set, the fputs function
will calls malloc at the same time. The malloc function is not reentrant, so
it will cause the program to crash.
Signed-off-by: Shaohua Zhan <shaohua.zhan@windriver.com>
------------------------------------------------------
Reference(s):
https://gitlab.com/procps-ng/procps/-/merge_requests/127
Signed-off-by: Jim Warner <james.warner@comcast.net>
While experimenting with a new feature, wherein select
fields display the total upon request, the capacity of
the 'num' passed to some 'scale' guys became an issue.
So this commit will, with the compiler's help, put the
responsibility for converting the integer into a float
within the calling code (instead of the called logic).
Signed-off-by: Jim Warner <james.warner@comcast.net>
With the 4 header files removed in the previous patch,
this commit just changes all those obsolete references
to that new consolidated 'misc.h' header file instead.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The Inspection feature already offered an INSP_SLIDE_1
provision. This patch now offers similar extensions to
variable width column scrolling (assuming SCROLLVAR_NO
isn't defined). Such a provision was useful during the
development of some recent library UTF-8 enhancements.
Signed-off-by: Jim Warner <james.warner@comcast.net>
With the restoration of corrupt utf8 multibyte editing
to the library, it's important to establish the proper
locale before calling that 'fatal_proc_unmounted' guy.
He calls the original 'look_up_our_self' who, in turn,
will invoke 'stat2proc' which then calls 'escape_str'.
Once there, it's too late to effect changes to locale.
[ the result would be lots and lots of '?' displayed ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
When any process' command line contains multibyte utf8
characters, two separate display problems could arise.
1. If that COMMAND column is not displayed as the very
last field, then field(s) to the right are misaligned.
2. Even when last, should utf8 string length (not that
display length) exceed allowable screen width, it will
nonetheless suffer from improper premature truncation.
Number 1 is less of a concern since the cmdline column
is likely to always be the last field to be displayed,
if only to enable right and left scrolling provisions.
Number 2 is much more likely to occur, especially with
additional fields which might be shown before COMMAND.
Or, forest view child tasks can yield the same effect.
So, this commit will permit the correct utf8 multibyte
display regardless of field position or string length.
And, we'll bring top into line with the ps program for
additional fields potentially subject to utf8 display.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The Fieldstab uses the full pids_item enumerator names
but also shows top's cryptic relative enumerator names
as comments. So, this commit will mirror that approach
in task_show, adding full pids_item names as comments.
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch is an outgrowth of that commit shown below.
Many additional potential segmentation faults might be
encountered if interactive commands are opened up to a
user when a '-p' switch has a single non-existent pid.
[ always the 'k', 'L', 'r', 'Y' keys & maybe 'v' too ]
So, this patch will restrict such a loser (oops, user)
to a reduced subset of normal commands until he/she/it
quits then restarts top with something to be displayed
or issues the '=' command overriding that '-p' switch.
Reference(s):
commit d3203d99dd
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch fixes a nearly decade old bug discovered by
Frederik Deweerdt. His merge request shown below would
be an adequate solution except for iterative overhead.
This alternate patch will represent substantially less
overhead for an admittedly extremely rare possibility.
Reference(s):
https://gitlab.com/procps-ng/procps/-/merge_requests/114
And-thanks-to: Frederik Deweerdt <fdeweerdt@fastly.com>
Signed-off-by: Jim Warner <james.warner@comcast.net>
What had been stated as the contents of the cpu graphs
was never really inclusive enough. Those recent newlib
tweaks highlighted the need for these man doc changes.
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ this is what happens when i've run out of bugs and ]
[ issues and am now left with way too much free time ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
All of these changes are self-explanatory, so I'll not
provide any more comments thus avoiding further shame.
[ everything's perfectly justified and right margins ]
[ are filled entirely, but of course it must be luck ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch just repositions some .PP macros so they'll
immediately precede the paragraphs to which they apply
rather than a comment line used as a visual separator.
[ ok we also update the document date to 'July 2020' ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit addresses the errors/warnings shown below.
Reference(s):
ERROR: skipping end of block that is not open: RE
WARNING: skipping paragraph macro: sp after PP
WARNING: skipping paragraph macro: PP empty
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit only eliminates two 'nop' instructions and
one 'jmp' instruction. However, it makes that C source
code look a little bit prettier than it looked before.
[ and yes, some unnecessary parenthesis were used to ]
[ force an alignment of some related lines. it costs ]
[ us nothing in extra code yet helps in readability. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch eliminates one variable which resulted in a
corresponding elimination of three 'mov' instructions.
[ that was 6 bytes per 'mov' for a total of 18 bytes ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ actually, this patch goes a little beyond what was ]
[ strictly required. some messages were expanded for ]
[ clarity and should an inactive node be selected by ]
[ the '3' command, a second '2' no longer is needed. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is prompted by the preceding change to the
library's escape.c module which, in turn, was prompted
by that issue shown below (with thanks to Konstantin).
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/176
Signed-off-by: Jim Warner <james.warner@comcast.net>
I've grown to hate that man document rendering when it
comes to hyphenation. So this patch will eliminate it.
And we'll also eliminate an unnecessary initialization
in that top program code concerned with combined cpus.
Signed-off-by: Jim Warner <james.warner@comcast.net>
This ensures that a single '4' keystroke will reliably
toggle the new 2 abreast mode ON. Depending on whether
an older configuration file existed or whether top was
configured with '--disable-modern-top', keying the '4'
for a second time might otherwise have been necessary.
Signed-off-by: Jim Warner <james.warner@comcast.net>
An old PRETEND8CPUS #define was reintroduced & changed
to PRETEND48CPU to better exercise the new '4' and '!'
toggles. But, the implementation simply duplicated the
/proc/stat summary line for each cpu. Therefore, every
cpu showed the same graph/detail (depending upon 't').
This patch shows the actual individual cpu information
(duplicated, of course, when total cpus are exceeded).
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch will address Craig's feedback regarding the
original implementation of top's two new toggles. It's
likely other users would have questioned why they were
not saved also, once they discover these new features.
And, since the minimum terminal width was just lowered
to 80 columns, the default for window #1 is also being
changed to show the individual cpu graphs two abreast.
[ assuming no '--disable-modern-top' for ./configure ]
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172https://www.freelists.org/post/procps/two-major-changes-to-top,1
Signed-off-by: Jim Warner <james.warner@comcast.net>
I'm about to break older top rcfile compatibility when
preserving those two new toggles. And, though this has
happened several times over the years, we never issued
any warnings that such thing was just about to happen.
So, this patch corrects the long standing shortcoming.
Signed-off-by: Jim Warner <james.warner@comcast.net>
For the original implementation of the '4' toggle, the
minimum width was set at 165 columns. This was done to
avoid truncations when detailed cpu statistics (versus
graphs) were being displayed. Those can not be scaled.
Upon reflection, it seems more appropriate to give the
user the choice of whether or not to truncate. And, by
reducing that minimum width requirement to 80 columns,
we'll vastly expand potential use of two abreast mode.
[ we'll keep that original as '#define TOG4_NOTRUNC' ]
The patch also updates the man document appropriately.
Along the way, we will trade the potentially confusing
word 'adjacent' for the more natural 'additional' when
detailing the '!' toggle in 4b. Summary-Area-Commands.
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172https://www.freelists.org/post/procps/two-major-changes-to-top
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch attempts to supress the following warnings:
. MISSING_BREAK, TAINTED_SCALAR plus SIZEOF_MISMATCH .
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch simply allows for better testing of our two
new toggles: '4' (2 abreast) plus '!' (combined cpus).
It had previously been dropped under the newlib branch
since top no longer managed cpus. However, now that we
have those new toggles, it seemed worth the efforts to
once again re-imagine then implement such a provision.
Signed-off-by: Jim Warner <james.warner@comcast.net>
When implementing that earlier '4' toggle, in response
to the issue referenced below, I got to thinking about
those environments with massively parallel processors.
Such environments may not benefit from the '4' toggle.
So, I decided to implement a feature that could enable
use of those '1' and/or '4' toggles no matter how many
active processors top may have ultimately encountered.
With the new '!' toggle, adjacent cpus can be combined
to any degree, represented as a single cpu group/line.
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172
Signed-off-by: Jim Warner <james.warner@comcast.net>
In the back of my mind, I've always wanted to enable a
two abreast cpu display. Folks with massively parallel
machines must surely have been frustrated with the '1'
toggle when Off (individual cpus in the Summary Area).
So, I'll use that recently raised issue shown below as
a justification for finally implementing this feature.
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/172
Signed-off-by: Jim Warner <james.warner@comcast.net>
Wow, hard to believe the extraneous comment line dates
all way back to an introduction of NLS support (2011).
Signed-off-by: Jim Warner <james.warner@comcast.net>
Several years after the 'e' & 'E' interactive commands
were introduce to affect memory scaling, an 'E' switch
was added. This was after discovering a dropped Redhat
patch which provided a unique 'M' command line switch.
If only for symmetry it makes sense to offer a similar
command switch ('e') for the Task Area memory scaling.
As was true with 'E', top's help text will show 'e' as
if it were a switch without arguments in order to keep
help text displayed without wrap in an 80x24 terminal.
The man page, however, will show all of the arguments.
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/165
. 03/2017, added 'E' command line switch
commit b2bd65407a
. 12/2012, added 'e' interactive command
commit 21e550bc08
. 12/2012, added 'E' interactive command
commit bc46f67f9a
Signed-off-by: Jim Warner <james.warner@comcast.net>
The Debian bug referenced below has nothing to do with
locales. In fact, top was made locale independent back
in release 3.3.13 (April, 2018). However, that bug did
reveal some misplaced logic which this patch corrects.
Prompted by the Qualys audit, all rcfile field strings
were checked for potential duplicates which could only
have resulted from some user's manual/malicious edits.
Unfortunately, that code was executed before top had a
chance to enforce the proper/maximum string length (in
the event an extremely old rcfile had just been read).
This created some potential string overrun references.
In top's original 3.3.15 implementation, the potential
overrun extended for 15 characters. That is the number
of field characters added with 3.3.9 (December, 2013).
But, since strchr() was used, no error exit was taken.
In the revised 3.3.16 implementation, the strchr() was
replaced with '&w->rc.fieldscur[n]'. This held overrun
to a single position while producing an error message.
So, this commit just moves that logic to a point where
fieldscur is guaranteed to be longer than EU_MAXPFLGS.
Reference(s):
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=951335
. revised 3.3.16 validation logic
commit 775223a817
. original 3.3.15 validation logic
commit 085351a0ee
Signed-off-by: Jim Warner <james.warner@comcast.net>
When that potential abend at program end was addressed
in the patch shown below, one line of code was removed
in error. That line served to suppress some end-of-job
reports should ATEOJ_RPTSTD or ATEOJ_RPTHSH be active.
So, this patch restores that previously deleted logic.
Reference(s):
. potential SEGV fix, newlib branch
commit 90c22e64ff
Signed-off-by: Jim Warner <james.warner@comcast.net>
A Qualys audit patch, represented in the commit below,
added the _exit() call to our abnormal signal handler.
Unfortunately, that disabled the associated core dump.
This patch restores expected behavior of those signals
whose default produces a core dump file + termination.
Reference(s):
commit e1f419737f
Signed-off-by: Jim Warner <james.warner@comcast.net>
