To avoid potential user confusion, like that reflected
in the previous commit message, a short narrative will
be included in the header file as programmer comments,
Signed-off-by: Jim Warner <james.warner@comcast.net>
With openSUSE's tumbleweed release of procps-ng-4.0.0,
their source rpm contained a questionable patch. It is
ostensibly devoted to increasing the accuracy for %cpu
calculations in the ps program. However, in my opinion
it goes too far and is quite flawed for these reasons:
1. Six separate files were impacted instead of just 1.
2. While ps was the object, libproc-2 was changed too.
3. A header file's alphabetic item order was violated.
4. The library API and ABI were altered unnecessarily.
It should be noted that all the <pids> TIME items were
made 'real' when representing seconds so that they can
be converted into jiffies/tics if multiplied by hertz.
Thus, there was absolutely no justification for adding
a new PIDS_TICS_ELAPSED ull_int item to the interface.
As an example, assuming a hertz value of 100, there is
enough capacity in all of those 'TIME' seconds to hold
nearly 3 million years worth of tics without a loss of
precision whenever they are changed back into jiffies.
[ that's nine quadrillion seven trillion one hundred ]
[ ninety-nine billion two hundred fifty-four million ]
[ seven hundred forty thousand nine hundred ninety + ]
[ one! or more concisely, as: 9,007,199,254,740,991. ]
So, any need for increased accuracy in that ps program
can be realized within the single output.c file alone.
That's what will be accomplished with this new commit.
And for any doubters here's a 'double' capacity proof:
beg ------ 9007199254740991.000000000000000000000 tic|
d /= 100, 90071992547409.90625000000000000000000 sec
d /= 60, 1501199875790.165039062500000000000000 min
d /= 60, 25019997929.83608245849609375000000000 hrs
d /= 24, 1042499913.743170142173767089843750000 day
d /= 7, 148928559.1061671674251556396484375000 wks
d /= 52, 2864010.752041676081717014312744140625 yrs
d *= 52, 148928559.1061671674251556396484375000 wks
d *= 7, 1042499913.743170142173767089843750000 day
d *= 24, 25019997929.83608245849609375000000000 hrs
d *= 60, 1501199875790.165039062500000000000000 min
d *= 60, 90071992547409.90625000000000000000000 sec
d *= 100, 9007199254740991.000000000000000000000 tic
end ------ 9007199254740991.000000000000000000000 " |
[ who knows, maybe we'll even convince openSUSE that ]
[ the original sledgehammer 'dif' should be dropped. ]
Reference(s):
. openSUSE equivalent: 'procps-ng-4.0.0-accuracy.dif'
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch trades some recurring per-task calculations
for calculations performed once at get, select or reap
time. It was prompted by the openSUSE dif named below.
[ my next commit will deal more thoroughly with that ]
Reference(s)
. openSUSE patch named: 'procps-ng-4.0.0-accuracy.dif'
Signed-off-by: Jim Warner <james.warner@comcast.net>
With the memset to zero of a 'new' meminfo_data struct
near the beginning of the meminfo_read_failed function
there's never a need to later set anything in it to 0.
[ who knows, our patch might even coax opensuse into ]
[ reevaluating that 4.0.0 'overflow' guy named below ]
Reference(s):
. overflow: 'procps-ng-4.0.0-integer-overflow.patch'
Signed-off-by: Jim Warner <james.warner@comcast.net>
Now that this 'c' variable initial assignment has been
moved outside the looping code, there is no longer any
need to specifically check for space/comma when 'c' is
not '%'. So, let us eliminate those two lines of code.
[ i promise not to change this algorithm ever again! ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
On occasion, even as the top author, I wonder why that
'x' toggle has stopped working. Of course, it actually
was working but a locate request ('L') or other filter
('O') operation was active and thus temporarily turned
if off. Such behavior is documented in top's man page.
Well, with this patch that 'x' suppression is no more.
[ the original justification, however, remains true. ]
[ but there's really only one character which causes ]
[ any potential trouble & i'm gonna' keep it secret. ]
[ besides, if a display is corrupted, there's always ]
[ that '=' key which restores things back to normal. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
On Cygwin systems use a different file and format to get the
OS version.
Thanks to procps Cygwin maintainer Achim!
Signed-off-by: Craig Small <csmall@dropbear.xyz>
While the previous commit checked for a GNU environment so Hurd
compilied ok, this tripped up Cygwin. configure now explicitly tests
for the structure field rather than trying to guess through compilier
flags about what the environment tells us about signals.h
References:
commit d39d9db079
Signed-off-by: Craig Small <csmall@dropbear.xyz>
As a result of the issue referenced below, we'll trade
our homegrown offset generator for an 'offsetof' macro
found in the stddef.h header file. This pleases clang.
[ and thanks to Daniel Kolesa for the report and fix ]
Reference(s):
. bug report & recommended solution
https://gitlab.com/procps-ng/procps/-/issues/235
. clang error message
proc/readproc.c:673:9: error: initializer element is not a compile-time constant
mkENT(Rss),
^~~~~~~~~~
proc/readproc.c:661:34: note: expanded from macro 'mkENT'
#define mkENT(F) { #F ":", -1, (int)((void*)&q->smap_ ## F - (void*)&q->fZERO) }
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Jim Warner <james.warner@comcast.net>
It would appear that openSUSE was the first to release
procps-ng version 4.0.0 (in the tumbleweed distro). As
a result I checked their source rpm and found a couple
of patches I'm porting to newlib for the next release.
This particulate patch, with some changes, is openSUSE
patch 'procps-ng-3.3.10-large_pcpu.patch'. The changes
were strictly cosmetic. They involved whitespace only.
[ it should be noted that the net effect for raising ]
[ the maximum is to produce a '?' in the %CPU field. ]
[ that's because its width is fixed at five columns. ]
[ but at least the '?' won't distort actual results. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
It would appear that openSUSE was the first to release
procps-ng version 4.0.0 (in the tumbleweed distro). As
a result I checked their source rpm and found a couple
of patches I'm porting to newlib for the next release.
This particulate commit was a refactor of the openSUSE
patch 'procps-ng-3.3.8-bnc634840.patch'. Unfortunately
their original patch did not have the intended effect.
That was because the amended signal handling logic was
performed well before the command line parameters were
parsed. So the global 'Batch' flag was in its 0 state.
. what follows is the original openSUSE commit message
------------------------------------------------------
Do not setup SIGHUP signal handler if we are in the batch mode
Top enables a signal handler for the SIGHUP signal (loss of terminal). While
this makes sense for top's default interactive mode, it doesn't make any sense
for batch mode. If you run top in nohup just to collect data over time and
disconnect top finishes which is not what one would expect.
------------------------------------------------------
Signed-off-by: Jim Warner <james.warner@comcast.net>
When the globbing update was put into sysctl, you could no longer
simply use the keys because one key could potentially be
multiple paths once the glob expansion occured. Using the path
instead gave a unique output.
Except certain programs, such as salt, expected the output to use
the dotted path "kernel.hostname" and not "kernel/hostname".
We can no longer use the original key, so now for each path:
Copy the path
strip off /proc/
convert all / to .
The sysctl testsuite was also updated to check for a few different
types of conversion failures.
References:
commit 6389deca5bhttps://www.freelists.org/post/procps/some-procpsn4400-fixes,4https://repo.saltproject.io/
Signed-off-by: Craig Small <csmall@dropbear.xyz>
When the globbing update was put into sysctl, you could no longer
simply use the keys because one key could potentially be
multiple paths once the glob expansion occured. Using the path
instead gave a unique output.
Except certain programs, such as salt, expected the output to use
the dotted path "kernel.hostname" and not "kernel/hostname".
We can no longer use the original key, so now for each path:
Copy the path
strip off /proc/
convert all / to .
The sysctl testsuite was also updated to check for a few different
types of conversion failures.
References:
commit 6389deca5bhttps://www.freelists.org/post/procps/some-procpsn4400-fixes,4https://repo.saltproject.io/
Signed-off-by: Craig Small <csmall@dropbear.xyz>
With the commit referenced below a nasty bug affecting
aix parsing was swatted. Beyond the bug, the logic was
enhanced to disallow commas in the format string since
they would otherwise be shown with their field's data.
However, there remained many characters other than ','
that could survive the edits to then be shown adjacent
to the data. Well, with this patch they won't anymore!
[ along the way we will no longer try to forgive the ]
[ use of a double '%%' prefix since that resulted in ]
[ display of one '%' and field code instead of data. ]
Reference(s):
. March, 2022 - restored aix bahavior
commit f0b7fd31db
Signed-off-by: Jim Warner <james.warner@comcast.net>
With the commit referenced below a nasty bug affecting
aix parsing was swatted. Beyond the bug, the logic was
enhanced to disallow commas in the format string since
they would otherwise be shown with their field's data.
However, there remained many characters other than ','
that could survive the edits to then be shown adjacent
to the data. Well, with this patch they won't anymore!
[ along the way we will no longer try to forgive the ]
[ use of a double '%%' prefix since that resulted in ]
[ display of one '%' and field code instead of data. ]
Reference(s):
. March, 2022 - restored aix bahavior
commit 8cb646bdfc
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ since our'master' branch will suffer the same fate ]
[ this was ported from a patch created for 'newlib'. ]
-------------------------- original newlib commit text
-------------------------- (showing our master commit)
The commit shown below broke the aix behavior that Dr.
Fink recently reported. However, in the proposed patch
the old behavior, showing garbage when '%cpu' was used
with an invalid formatting option, would appear again.
So this patch, based on Werner's patch, goes the extra
distance to prevent that. Along the way we'll disallow
commas in the aix format str to prevent their display.
Reference(s):
https://www.freelists.org/post/procps/Procpsng-400-released-with-newlib,2
. Mar, 2022 - where aix bug was introduced
commit 05187e4f17
Prototyped-by: Dr. Werner Fink <werner@suse.de>
Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit will once again display threads when using
the -L option along with any of those pidlist options.
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/234
Signed-off-by: Jim Warner <james.warner@comcast.net>
The commit shown below broke the aix behavior that Dr.
Fink recently reported. However, in the proposed patch
the old behavior, showing garbage when '%cpu' was used
with an invalid formatting option, would appear again.
So this patch, based on Werner's patch, goes the extra
distance to prevent that. Along the way we'll disallow
commas in the aix format str to prevent their display.
Reference(s):
https://www.freelists.org/post/procps/Procpsng-400-released-with-newlib,2
. Mar, 2022 - where aix bug was introduced
commit 81df85a1b5
Prototyped-by: Dr. Werner Fink <werner@suse.de>
Signed-off-by: Jim Warner <james.warner@comcast.net>
When top's rcfile was reorganized, trading that 'char'
based field representation for the 'int' scheme, there
was a function prologue that should have been changed.
Thus, this patch will correct that original oversight.
Reference(s):
. Mar, 2022 - rcfile reorganized
commit 46aa96e438
Signed-off-by: Jim Warner <james.warner@comcast.net>
Sometimes due to race conditions or the way dejagnu gates the
output, or even there is another interesting process, the ps tests
sometimes fail. These changes make it a little more lenient without
losing the purpose of the test.
Replaces Debian patch ps_tests
References:
https://salsa.debian.org/debian/procps/-/blob/debian/2%253.3.17-7/debian/patches/ps_checks
In some build systems, such as the Debian pbuilders, the
environment is strange. The tty is called "TTY" which causes
some of the ps tests to fail.
This commit checks for that specific result and returns ""
so the tests can be bypassed.
Replaces Debian patch fix_checks.
References:
https://salsa.debian.org/debian/procps/-/blob/debian/2%253.3.17-7/debian/patches/fix_checks
At this point I don't know if the Rc.id ever carried a
value of 'b', 'c', 'd' or 'e' in a public release. But
I do know that those values ought not to be recognized
in any configuration file. Now they won't be for sure.
[ while the absence of this new check didn't produce ]
[ an error message, it would skip the initialization ]
[ of default values plus possible string extensions. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
When the configuration file is first written, there is
just the normal single newline which ends that rcfile.
However, when any existing rcfile was rewritten, there
was one extra newline '\n' character added at the end.
This will happen just once. The file does NOT continue
to grow with the extra blank lines always being added.
Anyway, this patch will put an end to such a practice.
Signed-off-by: Jim Warner <james.warner@comcast.net>
For some unknown reason, make check doesn't depend on either
the check programs or the actual programs under test. This means
if you try to run make check right off the bat from a clean git
repositorty, it will fail as it won't be able to run the unbuilt
binaries.
I'm not sure why this is needed, but if the dist_man_MANS
variable is not copied from the top-level Makefile down to the
man-po one then make dist from a clean archive will not work.
I'm sure someone with better automake magic than me can make
this more elegant but for now it works if a little ugly.
References:
https://www.freelists.org/post/procps/important-newlib-patches,8
When we transitioned from 'char' based fields to 'int'
proper initial cursor positioning (highlight) was lost
in the 'fields_utility' function. The highlight should
appear on the current sort field. Instead, however, it
was often positioned on the first field listed or some
completely different field other than that sort field.
So this patch will restore the master branch behavior.
[ and on the assumption that a sort field is visible ]
[ we will search first for a field with the 'on' bit ]
Reference(s):
. Mar, 2022 - trade 'char' for 'int'
commit 46aa96e438
Signed-off-by: Jim Warner <james.warner@comcast.net>
At this point I don't know if the Rc.id ever carried a
value of 'b', 'c', 'd' or 'e' in a public release. But
I do know that those values ought not to be recognized
in any configuration file. Now they won't be for sure.
[ the net result is that now a user with such a file ]
[ will see the 'incompatible rcfile' message instead ]
[ of that misleading 'window entry corrupt' message. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
When the configuration file is first written, there is
just the normal single newline which ends that rcfile.
However, when any existing rcfile was rewritten, there
was one extra newline '\n' character added at the end.
This will happen just once. The file does NOT continue
to grow with the extra blank lines always being added.
Anyway, this patch will put an end to such a practice.
[ along the way i fixed an unrelated whitespace oops ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
When %CUC was added in the commit shown below I failed
to update the man document. This fixes that oversight.
Reference(s):
commit cfa5538832
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ the original newlib commit message(s) appear below ]
[ but 'cpu utilization' was not implemented to avoid ]
[ any library modifications and thus version impact! ]
------------------------------------- newlib patch ---
doc: updated with new 'start time' & 'cpu utilization'
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ the original newlib commit message(s) appear below ]
[ but 'cpu utilization' was not implemented to avoid ]
[ any library modifications and thus version impact! ]
--------------------------------- newlib patch #1 ---
top: added fields for 'start time' & 'cpu utilization'
This patch will exploit some new library capabilities.
[ one will raise eyebrows, the other likely will not ]
A new 'STARTED' field was added which shows the time a
process started after system boot. As such the largest
interval represents the most recently started process.
This is the field that will likely be questioned since
it's somewhat counterintuitive. But were we to instead
use TIME_ELAPSED, the value will change with every top
refresh. This will defeat any PUFF macro optimization.
The new '%CUU' field will probably be better received.
It represents the cpu usage over the life of the task.
When a process was showing high %CPU usage, this field
can be used to determine if it's an anomaly or normal.
[ and as with %CPU, %CUU shows a '?' when running in ]
[ a namespace when /proc was mounted with subset=pid ]
---------------------------------- newlib patch #2 ---
top: tweaked the recently introduced 'STARTED' support
When the 'STARTED' field was added, the width was made
the same as the 'TIME+' field. Thus, a full time could
be shown (which then included hundredths of a second).
That kind of granularity is totally unnecessary. After
all, this column is potentially confusing enough since
it is so counterintuitive. So, this commit will reduce
the width of the field with some help from scale_tics.
Henceforth it will not include those ol' centiseconds.
[ along the way let's expand the man document with a ]
[ a remainder about content representation & scaling ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ the original newlib commit message(s) appear below ]
------------------------------------- newlib patch ---
doc: document 'scale_tics' function for Ctrl-E scaling
[ i also tweaked that 'STARTED' narrative just a bit ]
[ since its original wording implied the value could ]
[ change, whereas it's fixed when a task is started. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ the original newlib commit message(s) appear below ]
---------------------------------- newlib patch #1 ---
top: refactor 'scale_tics' function for better scaling
This patch refactors the 'scale_tics' function to more
closely parallel uptime shown on the first line of the
summary area. The old logic has been preserved through
the header file's new #define SCALE_FORMER provision.
However, the former logic was actually a big disaster.
These are some potential problems with that old logic:
1. With respect to our time fields top no longer deals
solely with cpu time. So, the old limits of '68 weeks'
could possibly be insufficient to reflect those times.
2. Given the widths of top's new time fields, the code
never got beyond scaling to hours. For example, with a
ridiculously large span of 19 years, the scaled result
would then be shown as '167832h'. We never reached the
days ('6993d') or even the weeks ('999w') equivalents.
3. Similarly, with that 'TIME+' field and a large tics
value, results would then appear as 'MMMMMM:SS' rather
than the more meaningful 'HH:MM:SS' or days and hours.
So henceforth we will adopt these scaling conventions:
MMM:SS.hh ... minutes:seconds.hundredths
MMM:SS ...... minutes:seconds
HH,MM ....... hours,minutes
D+H ......... days+hours (with 'd' & 'h' suffixes)
D ........... days (with 'd' suffix)
W+D ......... weeks+days (with 'w' & 'd' suffixes)
W ........... weeks (with 'w' suffix)
Note that, unlike our former scaling logic, that 'MMM'
portion won't be allowed to grow unconditionally. It's
limited (arbitrarily?) to 360 total minutes (6 hours).
Additionally, the 'HH' guy will be limited to 96 hours
(4 days) while that 'D' limit was set at 14 (2 weeks).
Whenever a limit is hit, scaling will advance a level.
---------------------------------- newlib patch #2 ---
top: extended 'scale_tics' function for Ctrl-E scaling
That normalization of the 'scale_tics' function in the
prior commit convinced me that I won't please everyone
with my arbitrary choices for the scaling transitions.
So, this patch will provide the users with a means for
setting their own scaling transition points with a new
toggle. Ctrl-E was chosen since the 'e/E' toggles were
already present as a means of scaling (albeit memory).
[ this toggle will also serve an educational purpose ]
[ by allowing one to see all the scaling conventions ]
The scaling a user establishes is saved in the rcfile.
---------------------------------- newlib patch #3 ---
top: enhanced 'scale_tics' function for Ctrl-E scaling
When scale_tics was refactored and then Ctrl-E support
added to top, the complete range of scaling values was
not visible. Namely, a single 'd' (days) & 'w' (weeks)
was never seen with ^E. With this commit they will be.
Signed-off-by: Jim Warner <james.warner@comcast.net>
[ the original newlib commit message(s) appear below ]
----------------------------------------- newlib patch
ps: swat insidious bug with the %cpu' format specifier
Whoa, my head really hurts but this commit should help
with a speedy recovery hopefully, after it is applied.
If the '%cpu' field is used as a format specifier with
that 'o' option, you will encounter a SIGSEGV if there
is also an invalid argument on that same command line.
For example, try 'ps/pscommand -o %cpu,x' with newlib.
With any format specifier other than the '%cpu', there
is an error message, as would happen with '-o pcpu,x'.
For a 3.3.17 version of ps, there's no abend. Instead,
the program will just display a bunch of gobbledygook.
This boo-boo was found to exist as far back as v3.3.0.
[ ok, i am starting to feel very much better already ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
This new integer based version of 'fieldscur' deviated
a bit too much from that character based logic when it
comes to ancient 3.2.8 rcfile support. This results in
an inappropriate extra field shown as the last column.
If we're truly dealing with 20 year old 3.2.8 rcfiles,
it's important the 3.3.9 extension (RCF_PLUS_H) not be
concatenated to what was read. That's because a search
for the special SUSE characters will always find a '\'
in the 26th position (after normal 3.2.8 'fieldscur').
[ for symmetry, we'll also avoid RCF_PLUS_J (3.3.17) ]
All other 'old' rcfiles are transformed without error.
Reference(s):
. Mar, 2022 - 3.2.8 support restores
Signed-off-by: Jim Warner <james.warner@comcast.net>
This patch will restore the previously abandoned older
rcfile support. To be honest, I wasn't sure this would
be possible given the vast difference between formats.
But after some very intense hacking our newlib top can
again fully support seamless migration from some older
'char' based file to this new 'int' based file format.
[ top even supports a 20+ year old 3.2.8 config file ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
