I grew tired of inadvertently causing a premature exit
from top when all I wanted was to review some process'
environment variables. That 'V' key was just too close
to the 'C' key so the '^V' attempt became one of '^C'.
Well, not any more. Should a user wish to see a task's
environment, it will now require the '^N' combination.
[ it also now places G/U & N/K on a similar diagonal ]
Along the way, lower case Ctrl key combinations on the
help screen were all changed into upper case versions.
Signed-off-by: Jim Warner <james.warner@comcast.net>
After using this new feature for awhile, I encountered
numerous times when that 'Ctrl' window would disappear
as I was studying the contents. This was caused by the
death of the target task but it made me think that the
window could/should persist until dismissed by a user.
Well, now it will persist until that same Ctrl key has
been struck a 2nd time or a different Ctrl key used to
target another process after positioning it on row #1.
So now, instead of that former 'moving target' type of
approach, this window is more of a 'snapshot' in time.
[ even more significant, perhaps, is the fact that a ]
[ Ctrl window will now be drawn exactly 1 time only, ]
[ instead of being repainted after each delay cycle. ]
[ this will remain true no matter how many intervals ]
[ might elapse while its contents were under review. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
When support for the 'LIBPROC_HIDE_KERNEL' environment
variable was introduced, a deficiency was present that
allowed any rejected proc_t (i.e. a kworker thread) to
preserve the strdup'd 'cmd' value. That residual value
would prevent stat2proc or status2proc from updating a
cmd field with the proper program name for some tasks.
This patch just ensures a proc_t is freshened whenever
it has been rejected due to an active PT->hide_kernel.
[ again thanks to Björn for initiating the extension ]
Reference(s):
. original hide_kernel implementation
commit 2a7ec67ac8
. original hide_kernel proposal
https://gitlab.com/procps-ng/procps/-/merge_requests/147
Signed-off-by: Jim Warner <james.warner@comcast.net>
This minor addition to that new 'Ctrl' feature is more
important than it seems. It's responsible for alerting
yours truly to the 'LIBPROC_HIDE_KERNEL' bug addressed
in the very next commit. All this while, program names
for some tasks would be mysteriously replaced with the
kernel 'kworker' names. However, customary clutter for
the top process display tended to obscure such a fact.
[ and, of course, to notice the problem in the first ]
[ place required one to have the command line toggle ]
[ 'off' or perhaps to toggle its state 'on' & 'off'. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
There are times when one might want to see some task's
particular variable width data. However, prior to this
commit, the only way was to first turn on a field then
scroll through it via repeated right arrow keystrokes.
[ this also required that field to be displayed last ]
Needless to say, given the potential length of some of
that variable data this could be extremely cumbersome.
Now with this patch, a Ctrl keystroke combination will
create a separate window at the bottom of the terminal
screen where such variable width data is seen in full.
[ the targeted task is the 1st task displayed, which ]
[ is a convention employed in some existing commands ]
[ the targeted data was determined by these Ctrl key ]
[ combinations: CtrlG = ctrl group; CtrlK = cmdline; ]
[ CtrlU = supplementary groups; plus CtrlV = environ ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Created a test process test_shm that allocates a shared memory
segment and prints the segment ID. pmap testsuite runs pmap to
check that the segment is found.
The value returned by shmget() is the same value that is printed
in the fifth column /proc/<PID>/maps
Signed-off-by: Craig Small <csmall@dropbear.xyz>
pmap uses freopen to read /proc/self/maps. There doesn't
seem to be a good reason to do this and if pmap has its
stdin previously closed then it fails.
Signed-off-by: Craig Small <csmall@dropbear.xyz>
Call trace:
#0 __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1 0x00007f95c059f9d7 in _L_lock_638 () from /lib64/libc.so.6
#2 0x00007f95c059f8b6 in _nl_expand_alias
#3 0x00007f95c059dad8 in _nl_find_domain
#4 0x00007f95c059d22e in __dcigettext
#5 0x00007f95c059c05f in __GI___dcgettext
#6 0x00000000004032b3 in signal_handler (signo=15) at display.c:54
#7 <signal handler called>
#8 __memcpy_sse2 () at ../sysdeps/x86_64/memcpy.S:104
#9 0x00007f95c05d9934 in __GI__IO_getline_info
#10 0x00007f95c05d99b8 in __GI__IO_getline
#11 0x00007f95c05e2a5d in __GI_fgets_unlocked
#12 0x00007f95c059f478 in read_alias_file
#13 0x00007f95c059f97a in _nl_expand_alias
#14 0x00007f95c059dad8 in _nl_find_domain
#15 0x00007f95c059d22e in __dcigettext
#16 0x00007f95c059c05f in __GI___dcgettext
#17 0x0000000000403a8d in reset_global () at global.c:410
#18 0x0000000000402605 in main at display.c:650
The above call trace happens when the ps process is suspending, and the
signal SIGTERM is sent to the ps process at the same time.
Just cancel the SIGTERM and SIGHUP handler when suspending to prevent
the problem.
Signed-off-by: liutie <liutie4@huawei.com>
Signed-off-by: fu.lin <fulin10@huawei.com>
When autogroups are active programs such as renice and
nice are basically useless because the nice value will
only affect the target task priority relative to other
processes in the same autogroup. So to accomplish what
we thought of as renice, /proc/<pid>/autogroup must be
changed. Altering a single member in an autogroup will
also affect every other member of that same autogroup.
Since top's renice provision ('r') suffers constraints
like those of the stand alone nice/renice programs, we
will now provide a means to manipulate that nice value
found within some process' /proc/<pid>/autogroup file.
[ to alter this file for other user's tasks requires ]
[ root privileges, as does setting a negative value. ]
[ however, unlike that 'r' command, this new command ]
[ allows raising *and* lowering all positive values. ]
Reference(s):
. Aug 2021, autogroups added to librady
commit 631e5d91f3
. Aug 2021, autogroups added to top
commit b789b46f84
Signed-off-by: Jim Warner <james.warner@comcast.net>
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>
