Commit Graph

32 Commits

Author SHA1 Message Date
Jim Warner
9830fdf0ae top: tweak newlib interface, as more experience gained
Now that the dust is settling following an initial API
library effort, it is apparent my naming standards may
not have always been observed. This was a minor crime,
since those standards are unwritten (& not apparent?).

Basically, top has always capitalized the first letter
of global variables in an effort to distinguish global
definitions from local variables later in the program.

So this patch alters the new API variables to conform,
while also explicitly using 'context' for key structs.

Lastly, top now employs the new '#include <proc/name>'
conventions for the new/converted module header files.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-07-01 21:32:16 +10:00
Jim Warner
8ded6c5739 top: exploit the new library API for cpu display needs
This commit is mostly about eliminating code, now that
a library is responsible for the cpu tics maintenance.

The top program will continue to provide numa support,
without involving the library in any of those details.
[ not to mention all the 'dl' and 'stderr' numa crap ]

With this transfer of the cpu tics duty to our library
the provision associated with the CPU_ZEROTICS #define
could not initially be migrated. The commit referenced
below suggests it may have lost its importance. In any
case such logic may yet be incorporated in the future.
But for now, that #define has been completely removed.

Reference(s):
commit ee3ed4b45e

Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-06-29 21:31:16 +10:00
Jim Warner
c3fd7473c5 top: exploit the new library API for memory statistics
This commit represents the pioneering attempt at using
the concept of 'chained' library requests in an effort
to reduce function call overhead. It required exposing
no more implementation details than were already shown
through the individual calls, yet is satisfied in one.

It is just such an approach that will prove invaluable
when it comes time to access individual /proc/##/data.
Programs could 'chain' only those 'results' structures
representing their current view independent of all the
fields any such programs might be prepared to display.

Thus the standard 'read', which wouldn't apply to task
level data very well (or efficiently), can now become
a 'read_chain' whereby the former PROC_FILL flags need
can be satisfied & yield the minimum open/close calls.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-06-29 21:29:33 +10:00
Jim Warner
e107f5d63b top: miscellaneous accumulated changes to program code
This commit just tweaks top in the following respects:

. for alphabetic integrity, change 'INSP_hdr...' names

. eliminate the -Wsometimes-uninitialized warning that
was found under OSX Yosemite (llvm 6.0/clang-600.0.56)

. update program 'comments' reflecting copyright dates

Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-04-07 20:46:15 +10:00
Jim Warner
c75586f523 top: eliminated unreferenced macros & an error message
Signed-off-by: Jim Warner <james.warner@comcast.net>
2014-07-07 18:43:52 +02:00
Jim Warner
41ab7f005e top: with new bar graphs, make 'b' toggle unrestricted
While the 'b' toggle remains window based (vs. global)
it should no longer require that the window be visible
and either the 'x' or 'y' toggles to be on. Previously
those requirements were intended to remind a user that
there must be something for this command to highlight.

With the introduction of graph modes (specifically the
the bar graph) the 'bold/reverse' toggle has important
implications beyond highlighting some columns or rows.

The %Cpu(s) graph and Mem portion of the memory graphs
are designed to offer a visual clue as to the separate
elements comprising them. But that separation could be
lost under some X color schemes or when top is running
without color (in monochrome mode) and the block graph
is selected. But, if the graph is then changed to bars
any separation always becomes visible whenever the 'b'
toggle is turned off. Portions then show in 'reverse'.

So from now on we'll check nothing, we'll just toggle.

[ Besides, with all the code thrown at restricting a ]
[ 'b' toggle use, it might have all been for naught. ]
[ That toggle could still be set/unset using the 'Z' ]
[ command and the color mapping screen. Geez Louise! ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
2014-06-24 20:38:30 +10:00
Jim Warner
318919094d top: rearrange Mem & Swap lines and standardize 'used'
In anticipation of upcoming memory graphing provisions
the abbreviations 'Mem' and 'Swap' are being made into
individual translatable strings in order to be reused.

Additionally, the Mem 'used' amount will now no longer
included the 'buffers' and 'cached' values. Thus, each
Mem category becomes unique. This is the approach used
by tools such as 'htop' or the gnome 'System Monitor'.

Lastly, with that change to the 'used' category it has
been repositioned after 'free' on the Mem & Swap lines
making a comparison between 'total' and 'free' easier.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2014-06-22 21:39:55 +10:00
Jim Warner
e2868da34e top: update copyright dates plus 1 preprocessor change
Signed-off-by: Jim Warner <james.warner@comcast.net>
2014-04-28 13:46:06 +02:00
Lance Shelton
8d989c68c0 top: program code changes, enable NUMA/Node extensions
This commit extends the top Summary Area cpu states to
include information on Non-Uniform Memory Architecture
nodes. It is based upon changes originally proposed by
Lance Shelton who was instrumental in the final patch.

With this change, the user will have new commands that
will provide alternatives to the individual cpu stats:

. '2' toggles between cpu & numa node summary displays
. '3' provides node summary and related cpu statistics

These extensions required some minimal system support.
Typically, the numactl package (and maybe libnuma-dev)
are all that's needed to show a single node which owns
all the processors. Failing that, or for slightly more
variety, top also offers a #define named PRETEND_NUMA.

(everything is perfectly justified plus right margins)
(are completely filled, but of course it must be luck)

Signed-off-by: Jim Warner <james.warner@comcast.net>
Signed-off-by: Lance Shelton <LShelton@fusionio.com>
2013-04-14 22:21:42 +10:00
Jim Warner
5edc6fb317 top: enable other filtering via inclusion or exclusion
This change represents the extension of user filtering
based on inclusion or exclusion. However where 'U'/'u'
filtering provides an either/or choice, this extension
offers multiple choices applicable to multiple fields.

The 'inclusion' and 'exclusion' criteria can be freely
combined making a powerful tool to fine tune a display
and avoid clutter associated with uninteresting tasks.

I'm convinced it offers unimagined future flexibility!

(everything is perfectly justified plus right margins)
(are completely filled, but of course it must be luck)

Reference(s):
http://www.freelists.org/post/procps/top-over-the-top,22
http://www.freelists.org/post/procps/top-over-the-top,8

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-03-04 18:46:34 +01:00
Jim Warner
5a27c8095e top: make field management window size error non-fatal
Reference(s):
http://www.freelists.org/post/procps/top-won-the-sigwinch-war,3

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-01-30 10:53:49 +11:00
Jim Warner
ba9092ad83 top: preserve current screen when receiving a SIGWINCH
Prior to this commit, top has always taken the easiest
(safest?) approach when dealing with those troublesome
SIGWINCH interrupts. Whenever the user was on a screen
other than the main display, any signal received would
force an immediate exit, returning to the main screen.

With these changes, top will retain the user's current
position regardless of what screen he/she was viewing.

In support the following additional changes were made:
* the initial help screen requires an explicit end key
` not 'any other key' formerly used to request an exit
* the colors mapping screen instructions were improved
* ^Z response was made immediate, eliminating the flag
* the sigaction's SA_RESTART flag had to be eliminated
* sigprocmask logic was normailize to the bare minimum
* the POSIX.1-2004 async-signal safe functions used in
` the signal handlers were acknowledged and documented

(everything is perfectly justified plus right margins)
(are completely filled, but of course it must be luck)

Reference(s):
http://www.freelists.org/post/procps/unwanted-topinspect-window-enclosure-with-the-terminal-size-change

Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-01-24 21:29:23 +11:00
Jim Warner
dec6b8ffe7 top: happy new year while incrementing copyright dates
Signed-off-by: Jim Warner <james.warner@comcast.net>
2013-01-23 21:23:35 +11:00
Jim Warner
e6cb40235e top: extend scaled summary memory range to include EiB
This commit increases the upper limit for summary area
memory scaling to 9999.999 Exbibytes. It also enhances
the man page through a helpful table for equivalences.

(now that we know a '.' + 2 spaces is squeezed to one)
(everything's perfectly justified, but it's just luck)

Reference(s):
http://www.freelists.org/post/procps/top-regression-reports
http://www.freelists.org/post/procps/top-enhancements-i-hope,1

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-22 17:10:12 +11:00
Jim Warner
bc46f67f9a top: provide the means to adjust scaled summary memory
Earlier this year, the switch from KiB to Mib as shown
in top's summary area was postponed to those occasions
when KiB exceeded 8 digits. In hindsight that may have
moved top in the wrong direction, given the difficulty
of digesting such large numbers of digits at a glance.

This commit adds a new 'E' interactive command used to
cycle the displayed memory amounts ranging from KiB to
TiB. Thus, users can choose the radix they wish shown.

p.s. and it will be rcfile preserved for any restarts!

(now that we know a '.' + 2 spaces is squeezed to one)
(everything's perfectly justified, but it's just luck)

Reference(s):
http://www.freelists.org/post/procps/top-regression-reports

commit 95f2201730
Author: James Cloos <cloos@jhcloos.com>
Date:   Mon Feb 6 00:00:00 2012 -0500

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-22 17:07:40 +11:00
Jim Warner
407d1fc8f2 top: provide command line sort field override switches
This commit adds two new command line switches dealing
with the potential need to automate/script the setting
of top's current sort field independent of the rcfile.

The -o (lower case) switch requires a lone valid field
name as an argument, from among the 42 currently used.
Then, it overrides the config file's Curwin->sortindx.

And since field names are now translatable, they could
diverge from those reflected in the documentation. So,
a 2nd switch of -O (upper case) is also provided which
outputs all names as translated and understood by top.

(now that we know a '.' + 2 spaces is squeezed to one)
(everything's perfectly justified, but it's just luck)

Reference(s):
Bug-Redhat: https://bugzilla.redhat.com/871844
http://www.freelists.org/post/procps/PATCH-Allow-core-file-generation-by-ps-command-rhbz871825-rhbz512857,9
http://www.freelists.org/post/procps/PATCH-Allow-core-file-generation-by-ps-command-rhbz871825-rhbz512857,15
http://www.freelists.org/post/procps/PATCH-Allow-core-file-generation-by-ps-command-rhbz871825-rhbz512857,16

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-22 17:07:40 +11:00
Jim Warner
73d83ec1c2 top: add pseudo type to the inspect demo '=' provision
When 'type' was added to the alternate status line for
the '=' key, the need for the demonstration 'type' was
overlooked. This commit avoids the '(null)' potential.

(now that we know a '.' + 2 spaces is squeezed to one)
(everything's perfectly justified, but it's just luck)

Reference(s);
commit 3b2b9a95e6

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-22 17:07:38 +11:00
Jim Warner
5a0614e452 top: provide inspect selections with separate searches
This commit extends Inspect provisions for 'find/next'
to each individual selection. Thus a user can maintain
multiple active searches without having to reissue the
locate command whenever the current selection changes.

To emphasize this feature the View screen now displays
the current active locate string or 'N/A' if inactive.
Such a reminder is important when no found matches are
present on the 1st display page, given that they would
otherwise be apparent via the additional highlighting.

(now that we know a '.' + 2 spaces is squeezed to one)
(everything's perfectly justified, but it's just luck)

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-10 09:29:28 +11:00
Jim Warner
081fe506f3 top: add a flexible 'Inspect' capability
This commit introduces an extremely powerful, flexible
brand new capability.  Now, users can pause the normal
iterative display and inspect the contents of any file
or output from any script, command, or even pipelines.

It's invoked via the 'Y' interactive command which, in
turn, is supported with simple user supplied additions
as new entries in the top personal configuration file.

A separate new 'Inspect' window supports scrolling and
searching, similar to the main top display.  Except it
extends existing 'L'/'&' (locate/locate-next) commands
so that an out-of-view match automatically adjusts the
horizontal position bringing such data into view.  And
it provides for multiple successive same line matches.

Also, the basic 'more/less' navigation keys are active
in this new 'Inspect' window, to ease user transition.

There are no program changes required when entries are
added to or deleted from the rcfile.  And there are no
known limits to the complexity of a script, command or
pipeline, other than the unidirectional nature imposed
by the 'popen' function call which top cannot violate.

Since it's impossible to predict exactly what contents
will be generated, top treats all output as raw binary
data.  Any control characters display in '^C' notation
while all other unprintable characters show as '<AB>'.

The biggest problem encountered was with the find/next
capability since that strstr guy was really diminished
given the possibility that numerous 'strings' could be
encountered *within* many of top's raw, binary 'rows'.

Oh, and another problem was in maintaining the perfect
left & right text justification of this commit message
along with all of the commit summaries.  Some of those
summaries (like this very one) are of course, slightly
shorter, to make room for the 'man document' addition.

Enjoy!

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-11-27 22:08:02 +11:00
Jim Warner
39f4067c66 top: kill/nice provide for a default pid
As an aid to the above 2 commands, and as a prelude to
an upcoming 'inspect other output' capability, the act
of selecting a process for either has been simplified.

Positioning a task as the first one displayed, via the
up/down arrow keys, will now establish it as a default
selection for the appropriate command.  Thus, that pid
will then be incorporated in a subsequent input prompt.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-11-27 22:08:01 +11:00
Jim Warner
384afa494a top: optional wider non-scalable cols
This commit accommodates those fields which may have
suffered truncation due to these default limits:
  . 5 digits for uid/gid type fields
  . 8 characters for user/group type fields

With a new interactive command, users can increase the
width of all such fields, or return to the defaults.

Note:
   There are no restrictions on the amount added to
   the defaults.  The user is free to vastly exceed
   screen limits which simply means such fields can
   never be displayed.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-10-02 20:56:40 +10:00
Jim Warner
0f61354bf7 top: refactoring now allows column header nls support
Now that column headings are independent of column
data format and require no carefully managed padding
bytes they are candidates for nls translation.

This commit migrates all column headings to the .pot
file with additional translator guidance in the form
of maximum sizes to avoid truncation.

It also places these new additions adjacent to their
associated descriptions, which were already present.

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-10-02 20:56:40 +10:00
Jim Warner
4b98733132 top: honor the restrictive, crufty old top rcfile
At one time, new top silently defaulted when an rcfile
was found to be incompatible.  This is exactly what
the old top did.  However, after some discussion it
was decided top should alert the user and thereby
save the system administrator some headaches.

Now, some are upset over the fatal error, proving you
can't please everybody.  But in all fairness, given
the difficulty of customizing old top, any reluctance
to delete an old saved rcfile is understandable.

To ease transition to this new top, old style rcfiles
will now be honored and converted to the new format.
And if not disabled at ./configure time via CFLAGS,
a user will be warned when an old style rcfile is
about to be overwritten using the 'W' command.

Lastly, the config validation logic was enhanced to
help ensure both types of rcfile haven't been edited
manually and possibly made unuseable.

Reported-By: sergio <mailbox@sergio.spb.ru>
Bug-Debian:  http://bugs.debian.org/651213

Reported-By: martin f krafft <madduck@debian.org>
Bug-Debian:  http://bugs.debian.org/651863

Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-03-02 21:29:43 +11:00
Jim Warner
a096fec8c0 top: extend the Copyright (c) dates to include 2012
Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-02-12 21:52:23 +11:00
Jim Warner
e64b6f70d7 top: update some programmer documentation (no logic, just comments)
This commit corrects some outdated programmer comments.

Additionally, certain nls justifications might become
increasingly obscure with the passage of time so some
previous nls commit text has been added as comments.
2012-01-04 08:58:54 +11:00
Jim Warner
c465dca573 top: adapt 'locate/find next' search capability for nls 2011-12-22 23:48:06 +11:00
Jim Warner
04e3ec75dd top: idiot! sometimes nls was misspelled nsl (but not anymore) 2011-12-22 23:48:05 +11:00
Jim Warner
bc441a67ea top: added additional xgettext strings plus translator hints 2011-12-22 23:48:05 +11:00
Jim Warner
5826ce4c6e top: relocated nls.h from top_nls.h to top_nls.c 2011-12-22 23:48:04 +11:00
Jim Warner
eac96c37b5 top: corrected several programmer comments 2011-12-22 23:48:04 +11:00
Jim Warner
3f7468082a top: finalized top nls support (or so he thought)
summary of changes:
. adopted relative paths to 'include' and 'proc'
  dirs so that stand alone compiles are made
  easier and no one need guess their locations

. corrected several names for enums and macro
  usage reflecting fmt vs. txt

. expanded all octal escape sequences to a full
  3 digits since one already required 3 digits

. finalized translator hints (for now)

programming note:
  as an aside, by not including an argument for
  the gettext --add-comments, any preceeding c
  style comment will be propagated to the .pot
  file, if the gettext macro isn't empty.

  /* Need Not Say 'TRANSLATORS' ...
  snprintf(buf, sizeof(buf), "%s", _(   // unseen
  /* Translator Hint: ...
  snprintf(buf, sizeof(buf), "%s", _("" // seen
2011-12-22 23:48:04 +11:00
Jim Warner
32a9adbc13 top: provide extensive, generalized nls support
Reviewed-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Jim Warner <james.warner@comcast.net>
2011-12-22 23:48:04 +11:00