procps/top/top.h

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2011-03-31 16:45:12 +05:30
/* top.h - Header file: show Linux processes */
/*
* Copyright (c) 2002-2022, by: Jim Warner <james.warner@comcast.net
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*
* This file may be used subject to the terms and conditions of the
* GNU Library General Public License Version 2, or any later version
* at your option, as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*/
/* For contributions to this program, the author wishes to thank:
* Craig Small, <csmall@dropbear.xyz>
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* Albert D. Cahalan, <albert@users.sf.net>
* Sami Kerola, <kerolasa@iki.fi>
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*/
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#ifndef _Itop
#define _Itop
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/* Defines represented in configure.ac ----------------------------- */
//#define BOOST_MEMORY /* enable extra precision in memory fields */
//#define BOOST_PERCNT /* enable extra precision for two % fields */
//#define ORIG_TOPDEFS /* with no rcfile retain original defaults */
//#define SIGNALS_LESS /* favor reduced signal load over response */
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/* Development/Debugging defines ----------------------------------- */
//#define ATEOJ_RPTSTD /* report on some miscellany at end-of-job */
//#define CASEUP_HEXES /* show all those hex values in upper case */
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//#define CASEUP_SUFIX /* show time/mem/cnts suffix in upper case */
//#define EQUCOLHDRYES /* yes, equalize the column header lengths */
//#define FOCUS_HARD_Y /* 'F' will avoid topmost task distortions */
//#define FOCUS_TREE_X /* 'F' resets forest view indentation to 0 */
//#define FOCUS_VIZOFF /* 'F' doesn't provide the visual clue '|' */
//#define GETOPTFIX_NO /* do not address getopt_long deficiencies */
//#define INSP_JUSTNOT /* do not smooth unprintable right margins */
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>
2012-11-25 10:30:05 +05:30
//#define INSP_OFFDEMO /* disable demo screens, issue msg instead */
//#define INSP_SAVEBUF /* preserve 'Insp_buf' contents via a file */
//#define INSP_SLIDE_1 /* when scrolling left/right, don't move 8 */
//#define MEMGRAPH_OLD /* don't use 'available' when graphing Mem */
top: enable screen contents preservation at end-of-job The title of this commit is actually quite misleading. Were it more accurate, it would at least mention a tty emulator's scrollback buffer, which was the cumulation of a long pursuit to reduce the SIGWINCH overhead when a window manager carelessly floods an application with that signal *while* a user is still resizing a window! Disabling and enabling that scrollback buffer resulted in the final top display replaced with original screen contents, a phenomenon acknowledged at the time but it also represented a user interface change which has now produced the first request for return to old behavior. After the SIGWINCH dust settled, another problem arose regarding behaviors under the 'screen' window manager. In response, top was refactored a bit to avoid display corruption. That was before discovering 'screen' could duplicate the scrollback buffer behavior top expected. As it turns out, the 'screen' refactoring had probably made scrollback buffer manipulation unnecessary. Still one could argue that a window should not be allowed to scroll while a constantly updating program was active. The solution represented in this commit returns former behavior at program end (retaining top's last screen). And if we ever wish to disable scrollback buffers, the associated logic was retained but made conditional. It is not reflected in configure.ac but might be someday. Lastly, this commit corrects cursor positioning when a ^C is issued under 'Fields Management' at any terminal that didn't have a scrollback buffer (i.e. a console). Reference(s): https://bugzilla.redhat.com/show_bug.cgi?id=977561 http://www.freelists.org/post/procps/top-library-miscellaneous-tweaks,1 . screen program refactor commit 0fe393ff270922cd4f6edbcaabba006314e73a37 . scrollback buffer disabled commit dedaf6e1a81738ff08ee8e8523871e12f555ad6d . sigwinch management defines commit adca737758e5afc7be344a736953931894cbc19f commit 4f33b6b8c56464b4044deb29a3bb0e32622e108f Signed-off-by: Jim Warner <james.warner@comcast.net>
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//#define OFF_SCROLLBK /* disable tty emulators scrollback buffer */
top: restore the former behavior after stderr redirect When top originally responded to the potential libnuma stderr write, the library was consistently called with each refresh cycle. That, in turn, guaranteed that any warning message would be seen at program end by virtue of: 1) having been issued before the 2nd refresh cycle and; 2) benefiting from inherited /dev/null buffering. A later efficiency refactor meant the numa library may not always be called with every refresh cycle. Rather, it was only called if top was in one of two numa views (the '2' or '3' toggles). That, in turn, resulted in a loss of any warning message at program end unless numa mode had been preserved in the rcfile. In other words, if top was started normally then a single cycle stderr redirect would have long passed by the time the '2' or '3' toggle was activated. The warning message actually was spewed but quickly lost to the full screen refresh which follows all keyboard interactions with the user. This commit simply moves the restoration of our stderr redirect to program end (instead of that first display refresh). Now, any libnuma stderr warning message will appear as the concluding output line upon quitting top without regard to when any numa mode view was invoked. And since this technique might be useful in some other context (as an example of how to 'buffer' stderr) it's been generalized with its own #define. But to maximize its usefulness, the original redirect should be issued much earlier in pgm startup than top has chosen to do. Reference(s): . original libnuma stderr response (msg seen) commit 35dc6dcc49cc9cf8cff4300cb03a38dbe44c05db . numa refractoring for efficiency (msg lost) commit f12c0d5c6e84f9409ac3a73c066841a8ff5aab0b Signed-off-by: Jim Warner <james.warner@comcast.net>
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//#define OFF_STDERROR /* disable our stderr buffering (redirect) */
//#define OFF_STDIOLBF /* disable our own stdout 'IOFBF' override */
//#define OFF_XTRAWIDE /* disable our extra wide multi-byte logic */
//#define PRETEND0NUMA /* pretend that there ain't any numa nodes */
//#define PRETEND48CPU /* pretend we're smp with 48 ticsers (sic) */
//#define PRETENDNOCAP /* pretend terminal missing essential caps */
//#define QUICK_GRAPHS /* use fast algorithm & accept +2% distort */
//#define RCFILE_NOERR /* rcfile errs silently default, vs. fatal */
//#define RECALL_FIXED /* don't reorder saved strings if recalled */
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//#define RMAN_IGNORED /* don't consider auto right margin glitch */
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. Reference(s): . Feb, 2022 - added 'ELAPSED' commit 9348d3b0085bd389749cc5619fdde4ec3fae5f11 . Feb, 2022 - added 'STARTED' commit 7647e96b0a35d473fa9bc644ea6107487b3b0527 Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-03-03 11:30:00 +05:30
//#define SCALE_FORMER /* scale_tics() guy shouldn't mimic uptime */
//#define SCALE_POSTFX /* scale_tics() try without a 'h,d' suffix */
//#define SCROLLVAR_NO /* disable intra-column horizontal scrolls */
//#define SCROLLV_BY_1 /* when scrolling left/right do not move 8 */
//#define STRINGCASENO /* case insenstive compare/locate versions */
//#define TERMIOS_ONLY /* use native input only (just limp along) */
//#define THREADED_CPU /* separate background thread for cpu updt */
//#define THREADED_MEM /* separate background thread for mem updt */
//#define THREADED_TSK /* separate background thread for tsk updt */
//#define TOG4_NOFORCE /* no force 2 abreast mode with '4' toggle */
//#define TOG4_NOTRUNC /* ensure no truncation for 2 abreast mode */
//#define TOG4_OFF_MEM /* don't show two abreast memory statistic */
//#define TOG4_OFF_SEP /* don't show two abreast visual separator */
//#define TREE_NORESET /* sort keys should not force 'V' view off */
top: tweak forest view protections for forking anomaly A recent commit eliminated the potential for a storage violation with forest view mode. It occurred when some program (erroneously?) created a lengthy forking loop. However, the associated commit message was misleading. The message implied that an unexpected order following a sort on start_time was the cause of storage overruns and a 'char' used to track nesting level only distorts the display when it goes negative. Actually, the truth is really just the opposite. Any start_time sort quirk causes no harm while that 'char' can yield corruption. Should some child end up sorted ahead of its parent by way of an extremely unlikely shared start_time the end result is such a child will be displayed unnested just like init or kthreadd along with all its own children. However, if nesting levels exceeded 255 (and became 0) a massive array overrun could be triggered when such a task and *all* its children were added to an array for the second time. Exactly how much storage was violated depended on the number of children that zeroed process had spawned (hinted at via either SIGSEGV or SIGABRT). The earlier commit limited nested levels to 100 so the root cause of the storage violation was already fixed. The potential for distorted nesting levels due to sort on start_time would seem to remain. But it's extremely unlikely that 2 tasks would share the same start_time. Even so, a new #define has been introduced which makes top impervious to the order of tasks such that a qsort is no longer necessary (providing an init/systemd task exists & was harvested as the first task by readproc). It can be utilized if distorted nesting ever becomes a real issue. But since there is a 5-10% performance hit with that, we'll continue using start_time as default. References(s): commit ce70017eb1927be51f73cbe0a0b4babcc502607e Signed-off-by: Jim Warner <james.warner@comcast.net>
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//#define TREE_SCANALL /* rescan array w/ forest view, avoid sort */
//#define TREE_VALTMRK /* use an indented '+' with collapsed pids */
top: parent total cpu includes collapsed children, pgm Now, when a parent's children have been collapsed, the cpu used by those unseen tasks will disappear no more. Instead such tics will be added to the parent's total. [ if one wished a return to the 'land of lost tics', ] [ the '#define TREE_VCPUOFF' directive is available. ] ------------------------------------------------------ Note: With collapsible parents now displaying children cpu usage, it will eventually be noticed the cpu stats for the summary area and task areas often vary widely. It's worth a reminder that for top's summary area each individual cpu and the cpu summary is limited to 100%, regardless of how many tics a linux kernel may export. An individual task is limited to 100% times the number of threads. But, in no case will cpu usage ever exceed 100% times total number of processors. Such limits are further reduced under 'Solaris' mode ('I' toggle off). In this mode, a task cpu usage will never exceed 100%. These limits will now also apply to collapsed parents. In addition to those influences, results are subjected to kernel timer sampling anomalies and the distortions inherent in a small sample size, made worse by smaller delay intervals. Often there is just 1 or 2 tics for a few tasks at smaller intervals such as: 1/10th second. Anyway, should questions on this subject arise, a good starting point, beyond the reminders above, is the 1st link listed below. Those other links were derivatives. Reference(s): . from the kernel documentation https://www.kernel.org/doc/Documentation/cpu-load.txt . as mentioned in the above kernel documentation https://lkml.org/lkml/2007/2/12/6 . from above, with many more links on the subject https://www.boblycat.org/~malc/apc/ Signed-off-by: Jim Warner <james.warner@comcast.net>
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//#define TREE_VCPUOFF /* a collapsed parent excludes child's cpu */
//#define TREE_VPROMPT /* pid collapse/expand prompt, vs. top row */
//#define TREE_VWINALL /* pid collapse/expand impacts all windows */
//#define USE_X_COLHDR /* emphasize header vs. whole col, for 'x' */
//#define VALIDATE_NLS /* ensure the integrity of four nls tables */
//#define WIDEN_COLUMN /* base column widths on translated header */
/*###### Notes, etc. ###################################################*/
/* For introducing inaugural cgroup support, thanks to:
Jan Gorig <jgorig@redhat.com> - April, 2011 */
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/* For the motivation and path to nls support, thanks to:
Sami Kerola, <kerolasa@iki.fi> - December, 2011 */
/* There are still some short strings that may yet be candidates
for nls support inclusion. They're identified with:
// nls_maybe */
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/* For the impetus and NUMA/Node prototype design, thanks to:
Lance Shelton <LShelton@fusionio.com> - April, 2013 */
/* For prompting & helping with top's utf-8 support, thanks to:
Göran Uddeborg <goeran@uddeborg.se> - September, 2017 */
// pretend as if #define _GNU_SOURCE
char *strcasestr(const char *haystack, const char *needle);
#ifdef STRINGCASENO
#define STRSTR strcasestr
#define STRCMP strcasecmp
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#else
#define STRSTR strstr
#define STRCMP strcmp
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#endif
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/*###### Some Miscellaneous constants ##################################*/
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/* The default delay twix updates */
#ifdef ORIG_TOPDEFS
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#define DEF_DELAY 3.0
#else
#define DEF_DELAY 1.5
#endif
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/* Length of time a message is displayed and the duration
of a 'priming' wait during library startup (in microseconds) */
#define MSG_USLEEP 1250000
#define LIB_USLEEP 150000
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/* Specific process id monitoring support (command line only) */
#define MONPIDMAX 20
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/* Output override minimums (the -w switch and/or env vars) */
#define W_MIN_COL 3
#define W_MIN_ROW 3
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/* Miscellaneous buffers with liberal values and some other defines
-- mostly just to pinpoint source code usage/dependancies */
#define SCREENMAX 512
/* the above might seem pretty stingy, until you consider that with every
field displayed the column header would be approximately 250 bytes
-- so SCREENMAX provides for all fields plus a 250+ byte command line */
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#define CAPBUFSIZ 32
#define CLRBUFSIZ 64
#define PFLAGSSIZ 100
#define SMLBUFSIZ 128
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#define MEDBUFSIZ 256
#define LRGBUFSIZ 512
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#define OURPATHSZ 1024
#define BIGBUFSIZ 2048
/* in addition to the actual display data, our row might have to accommodate
many termcap/color transitions - these definitions ensure we have room */
#define ROWMINSIZ ( SCREENMAX + 8 * (CAPBUFSIZ + CLRBUFSIZ) )
#define ROWMAXSIZ ( SCREENMAX + 16 * (CAPBUFSIZ + CLRBUFSIZ) )
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>
2012-11-25 10:30:05 +05:30
// minimum size guarantee for dynamically acquired 'readfile' buffer
#define READMINSZ 2048
// size of preallocated search string buffers, same as ioline()
#define FNDBUFSIZ MEDBUFSIZ
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// space between task fields/columns
#define COLPADSTR " "
#define COLPADSIZ ( sizeof(COLPADSTR) - 1 )
// continuation ch when field/column truncated
#define COLPLUSCH '+'
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// support for keyboard stuff (cursor motion keystrokes, mostly)
#define kbd_ESC '\033'
#define kbd_SPACE ' '
#define kbd_ENTER '\n'
#define kbd_UP 129
#define kbd_DOWN 130
#define kbd_LEFT 131
#define kbd_RIGHT 132
#define kbd_PGUP 133
#define kbd_PGDN 134
#define kbd_HOME 135
#define kbd_END 136
#define kbd_BKSP 137
#define kbd_INS 138
#define kbd_DEL 139
#define kbd_CtrlO '\017'
#define kbd_CtrlE '\005'
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/* Special value in Pseudo_row to force an additional procs refresh
-- used at startup and for task/thread mode transitions */
#define PROC_XTRA -1
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/* ##### Enum's and Typedef's ############################################ */
/* Flags for each possible field (and then some) --
these MUST be kept in sync with the Fieldstab[] array !! */
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enum pflag {
EU_PID = 0, EU_PPD,
EU_UED, EU_UEN, EU_URD, EU_URN, EU_USD, EU_USN,
EU_GID, EU_GRP, EU_PGD, EU_TTY, EU_TPG, EU_SID,
EU_PRI, EU_NCE, EU_THD,
EU_CPN, EU_CPU, EU_TME, EU_TM2,
EU_MEM, EU_VRT, EU_SWP, EU_RES, EU_COD, EU_DAT, EU_SHR,
EU_FL1, EU_FL2, EU_DRT,
EU_STA, EU_CMD, EU_WCH, EU_FLG, EU_CGR,
EU_SGD, EU_SGN, EU_TGD,
EU_OOA, EU_OOM,
EU_ENV,
EU_FV1, EU_FV2,
EU_USE,
EU_NS1, EU_NS2, EU_NS3, EU_NS4, EU_NS5, EU_NS6,
EU_LXC,
EU_RZA, EU_RZF, EU_RZL, EU_RZS,
EU_CGN,
EU_NMA,
EU_LID,
EU_EXE,
EU_RSS, EU_PSS, EU_PZA, EU_PZF, EU_PZS, EU_USS,
EU_IRB, EU_IRO, EU_IWB, EU_IWO,
EU_AGI, EU_AGN,
EU_TM3, EU_TM4, EU_CUU, EU_CUC,
#ifdef USE_X_COLHDR
// not really pflags, used with tbl indexing
EU_MAXPFLGS
#else
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// not really pflags, used with tbl indexing & col highlighting
EU_MAXPFLGS, EU_XON, EU_XOF
#endif
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};
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top: provide the means to adjust scaled process memory This commit is an unrequested outgrowth of the earlier change dealing with summary area memory field scaling. That user selectable scaling provision is now extended to include 6 (at present) task oriented memory fields. The new companion 'e' (lower case) interactive command has been added and, like the 'E' command, it can cycle each of the currently displayed memory columns between KiB through TiB. There are, however, some differences. Where '+' indicates summary area truncation at a given radix, task memory fields are automatically scaled for their column. Thus, not all rows use the same scaling. And, while summary area field widths were not changed, the task memory columns were widened in order to offer more meaningful data when the radix was increased. The precision is automatically increased in step with each radix: MiB displays 2 decimal places, GiB 3 and TiB 4. To compliment that additional precision, both the %CPU and %MEM fields were widened by 1 column and now offer precision up to 3 decimal places. But, unique to %CPU, widening could already have occurred due to the number of processors in some massively parallel boxes. At any rate, total extra width for both memory and percentage fields could amount to twenty (precious) columns more. So for both the memory and % fields the original width (along with loss of precision) can be restored via new compiler conditionals which this commit also provides. 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 Signed-off-by: Jim Warner <james.warner@comcast.net>
2012-12-14 11:30:00 +05:30
/* The scaling 'target' used with memory fields */
enum scale_enum {
top: add graphs modes for cpu and memory, program code This patch makes 't' (View_STATES) & 'm' (View_MEMORY) commands into 4-way toggles. The two new modes provide for two different graphs of the cpu and/or memory use. These new capabilities are similar to those offered by the 'htop' program. However they're aesthetically more pleasing (to me) plus the scalings are more authentic. Poor ol' top has long been troubled by the comparisons offered up by the 'htop' program. Many of those things were only true of the original redhat top while others are no longer true of this current top program. So let me use this commit msg to begin to correct the record. Corrected comparisons between 'htop' & 'top' programs: ------------------------------------------------------ + htop does not start faster, actually reverse is true + top offers scrolling vertically and horizontally too . (and top offers better <Home> and <End> key support) + unassigned keystrokes don't subject top to any delay . (but htop suffers that annoying ncurses <Esc> delay) + in top one need not type the PID to kill the process + in top one need not type the PID to renice a process Some things the 'htop' program was not bragging about: ------------------------------------------------------ + top can outperform the htop program by a wide margin + htop + SIGWINCH = corrupted display + restart likely + htop cannot preserve its screen data at suspend/exit + the htop column management scheme is very cumbersome + htop allows columns to be duplicated again and again + htop displays only full command lines, not pgm names . (and that 'Command' column must always be displayed) . (and it must always remain as the last column shown) + htop does not provide for any sort of command recall + htop's search feature does not highlight any matches + there is no 'find next' outside of htop search modes + htop does not allow Header or Process memory scaling + htop provides no flexibility on column justification + htop does not provide the means to change col widths + htop provides less control over colors configuration + htop always overwrites the rcfile with any UI change Someday, maybe we'll provide a better comparison as an addendum for (or replacement of) that README.top file. Signed-off-by: Jim Warner <james.warner@comcast.net>
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SK_Kb, SK_Mb, SK_Gb, SK_Tb, SK_Pb, SK_Eb
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};
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/* Used to manipulate (and document) the Frames_signal states */
enum resize_states {
BREAK_off = 0, BREAK_kbd, BREAK_sig, BREAK_autox
};
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/* This typedef just ensures consistent 'process flags' handling */
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typedef unsigned char FLG_t;
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/* These typedefs attempt to ensure consistent 'ticks' handling */
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typedef unsigned long long TIC_t;
typedef long long SIC_t;
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/* /////////////////////////////////////////////////////////////// */
/* Special Section: multiple windows/field groups --------------- */
/* ( kind of a header within a header: constants, types & macros ) */
#define CAPTABMAX 9 /* max entries in each win's caps table */
#define GROUPSMAX 4 /* the max number of simultaneous windows */
#define WINNAMSIZ 4 /* size of RCW_t winname buf (incl '\0') */
#define GRPNAMSIZ WINNAMSIZ+2 /* window's name + number as in: '#:...' */
/* The Persistent 'Mode' flags!
These are preserved in the rc file, as a single integer and the
letter shown is the corresponding 'command' toggle */
// 'View_' flags affect the summary (minimum), taken from 'Curwin'
#define View_CPUSUM 0x008000 // '1' - show combined cpu stats (vs. each)
#define View_CPUNOD 0x400000 // '2' - show numa node cpu stats ('3' also)
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#define View_LOADAV 0x004000 // 'l' - display load avg and uptime summary
#define View_STATES 0x002000 // 't' - display task/cpu(s) states summary
#define View_MEMORY 0x001000 // 'm' - display memory summary
#define View_NOBOLD 0x000008 // 'B' - disable 'bold' attribute globally
#define View_SCROLL 0x080000 // 'C' - enable coordinates msg w/ scrolling
// 'Show_' & 'Qsrt_' flags are for task display in a visible window
#define Show_COLORS 0x000800 // 'z' - show in color (vs. mono)
#define Show_HIBOLD 0x000400 // 'b' - rows and/or cols bold (vs. reverse)
#define Show_HICOLS 0x000200 // 'x' - show sort column emphasized
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#define Show_HIROWS 0x000100 // 'y' - show running tasks highlighted
#define Show_CMDLIN 0x000080 // 'c' - show cmdline vs. name
#define Show_CTIMES 0x000040 // 'S' - show times as cumulative
#define Show_IDLEPS 0x000020 // 'i' - show idle processes (all tasks)
#define Show_TASKON 0x000010 // '-' - tasks showable when Mode_altscr
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#define Show_FOREST 0x000002 // 'V' - show cmd/cmdlines with ascii art
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#define Qsrt_NORMAL 0x000004 // 'R' - reversed column sort (high to low)
#define Show_JRSTRS 0x040000 // 'j' - right justify "string" data cols
#define Show_JRNUMS 0x020000 // 'J' - right justify "numeric" data cols
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// these flag(s) have no command as such - they're for internal use
#define NOPRINT_xxx 0x010000 // build task rows only (not for display)
#define EQUWINS_xxx 0x000001 // rebalance all wins & tasks (off i,n,u/U)
#ifndef USE_X_COLHDR
#define NOHISEL_xxx 0x200000 // restrict Show_HICOLS for osel temporarily
#define NOHIFND_xxx 0x100000 // restrict Show_HICOLS for find temporarily
#endif
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// Default flags if there's no rcfile to provide user customizations
#ifdef ORIG_TOPDEFS
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#define DEF_WINFLGS ( View_LOADAV | View_STATES | View_CPUSUM | View_MEMORY \
| Show_HIBOLD | Show_HIROWS | Show_IDLEPS | Show_TASKON | Show_JRNUMS \
| Qsrt_NORMAL )
#define DEF_GRAPHS2 0, 0
top: provide -E command line switch for memory scaling In their 3.2.7 version of top, Redhat introduced an -M switch to automatically scale Summary Area memory data to avoid truncation (and the resulting '+' indicator). The procps-ng top does not employ suffixes with memory data nor does it allow for different scaling with each separate value. Rather, scaling appears at line start. If built without ./configure --disable-modern-top, the Summary Area memory will be scaled at GiB which should lessen chance of truncation. Otherwise KiB was used to reflect such memory, increasing the truncation chance. And while 'W' can be used to preserve some appropriate scaling value, there are arguments against such rcfile approaches as cited in the issue and bug report below. So this commit will bump the Summary Area memory scale factor from KiB to MiB when using --disable-modern-top as a concession to that Redhat bug report noted below. And it also introduces a new command line switch which can force any desired scaling regardless of the rcfile or which ./configure option might have been specified. [ for top's help text we'll show 'E' as if it were a ] [ switch without arguments in order to keep the help ] [ text displayable without wrap in an 80x24 terminal ] [ the man page, however, will show all k-e arguments ] Reference(s): https://gitlab.com/procps-ng/procps/issues/53 https://bugzilla.redhat.com/show_bug.cgi?id=1034466 [ this patch has been adapted from the master branch ] Signed-off-by: Jim Warner <james.warner@comcast.net>
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#define DEF_SCALES2 SK_Mb, SK_Kb
#define ALT_WINFLGS DEF_WINFLGS
#define ALT_GRAPHS2 0, 0
#else
#define DEF_WINFLGS ( View_LOADAV | View_STATES | View_MEMORY | Show_CMDLIN \
| Show_COLORS | Show_FOREST | Show_HIROWS | Show_IDLEPS | Show_JRNUMS | Show_TASKON \
| Qsrt_NORMAL )
#define DEF_GRAPHS2 1, 2
#define DEF_SCALES2 SK_Gb, SK_Mb
#define ALT_WINFLGS (DEF_WINFLGS | Show_HIBOLD) & ~Show_FOREST
#define ALT_GRAPHS2 2, 0
#endif
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/* These are used to direct wins_reflag */
enum reflag_enum {
Flags_TOG, Flags_SET, Flags_OFF
};
/* These are used to direct win_warn */
enum warn_enum {
Warn_ALT, Warn_VIZ
};
/* This type helps support both a window AND the rcfile */
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typedef struct RCW_t { // the 'window' portion of an rcfile
int sortindx, // sort field (represented as procflag)
winflags, // 'view', 'show' and 'sort' mode flags
maxtasks, // user requested maximum, 0 equals all
graph_cpus, // 't' - View_STATES supplementary vals
graph_mems, // 'm' - View_MEMORY supplememtary vals
double_up, // '4' - show individual cpus 2 abreast
combine_cpus, // '!' - keep combining additional cpus
summclr, // a colors 'number' used for summ info
msgsclr, // " in msgs/pmts
headclr, // " in cols head
taskclr; // " in task rows
char winname [WINNAMSIZ], // name for the window, user changeable
fieldscur [PFLAGSSIZ]; // the fields for display & their order
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} RCW_t;
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/* This represents the complete rcfile */
typedef struct RCF_t {
char id; // rcfile version id
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int mode_altscr; // 'A' - Alt display mode (multi task windows)
int mode_irixps; // 'I' - Irix vs. Solaris mode (SMP-only)
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float delay_time; // 'd'/'s' - How long to sleep twixt updates
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int win_index; // Curwin, as index
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RCW_t win [GROUPSMAX]; // a 'WIN_t.rc' for each window
int fixed_widest; // 'X' - wider non-scalable col addition
int summ_mscale; // 'E' - scaling of summary memory values
top: provide the means to adjust scaled process memory This commit is an unrequested outgrowth of the earlier change dealing with summary area memory field scaling. That user selectable scaling provision is now extended to include 6 (at present) task oriented memory fields. The new companion 'e' (lower case) interactive command has been added and, like the 'E' command, it can cycle each of the currently displayed memory columns between KiB through TiB. There are, however, some differences. Where '+' indicates summary area truncation at a given radix, task memory fields are automatically scaled for their column. Thus, not all rows use the same scaling. And, while summary area field widths were not changed, the task memory columns were widened in order to offer more meaningful data when the radix was increased. The precision is automatically increased in step with each radix: MiB displays 2 decimal places, GiB 3 and TiB 4. To compliment that additional precision, both the %CPU and %MEM fields were widened by 1 column and now offer precision up to 3 decimal places. But, unique to %CPU, widening could already have occurred due to the number of processors in some massively parallel boxes. At any rate, total extra width for both memory and percentage fields could amount to twenty (precious) columns more. So for both the memory and % fields the original width (along with loss of precision) can be restored via new compiler conditionals which this commit also provides. 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 Signed-off-by: Jim Warner <james.warner@comcast.net>
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int task_mscale; // 'e' - scaling of process memory values
int zero_suppress; // '0' - suppress scaled zeros toggle
int tics_scaled; // ^E - scale TIME and/or TIME+ columns
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} RCF_t;
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/* This structure stores configurable information for each window.
By expending a little effort in its creation and user requested
maintenance, the only real additional per frame cost of having
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windows is an extra sort -- but that's just on pointers! */
typedef struct WIN_t {
FLG_t pflgsall [PFLAGSSIZ], // all 'active/on' fieldscur, as enum
procflgs [PFLAGSSIZ]; // fieldscur subset, as enum
RCW_t rc; // stuff that gets saved in the rcfile
int winnum, // a window's number (array pos + 1)
winlines, // current task window's rows (volatile)
maxpflgs, // number of displayed procflgs ("on" in fieldscur)
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totpflgs, // total of displayable procflgs in pflgsall array
begpflg, // scrolled beginning pos into pflgsall array
endpflg, // scrolled ending pos into pflgsall array
begtask, // scrolled beginning pos into total tasks
begnext, // new scrolled delta for next frame's begtask
#ifndef SCROLLVAR_NO
varcolbeg, // scrolled position within variable width col
#endif
varcolsz, // max length of variable width column(s)
usrseluid, // validated uid for 'u/U' user selection
usrseltyp, // the basis for matching above uid
usrselflg, // flag denoting include/exclude matches
hdrcaplen; // column header xtra caps len, if any
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char capclr_sum [CLRBUFSIZ], // terminfo strings built from
capclr_msg [CLRBUFSIZ], // RCW_t colors (& rebuilt too),
capclr_pmt [CLRBUFSIZ], // but NO recurring costs !
capclr_hdr [CLRBUFSIZ], // note: sum, msg and pmt strs
capclr_rowhigh [SMLBUFSIZ], // are only used when this
capclr_rownorm [CLRBUFSIZ], // window is the 'Curwin'!
cap_bold [CAPBUFSIZ], // support for View_NOBOLD toggle
grpname [GRPNAMSIZ], // window number:name, printable
#ifdef USE_X_COLHDR
columnhdr [ROWMINSIZ], // column headings for procflgs
#else
columnhdr [SCREENMAX], // column headings for procflgs
#endif
*captab [CAPTABMAX]; // captab needed by show_special()
struct osel_s *osel_1st; // other selection criteria anchor
int osel_tot; // total of other selection criteria
char *findstr; // window's current/active search string
int findlen; // above's strlen, without call overhead
int focus_pid; // target pid when 'F' toggle is active
int focus_beg; // ppt index where 'F' toggle has begun
int focus_end; // ppt index where 'F' toggle has ended
#ifdef FOCUS_TREE_X
int focus_lvl; // the indentation level of parent task
#endif
struct pids_stack **ppt; // this window's stacks ptr array
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struct WIN_t *next, // next window in window stack
*prev; // prior window in window stack
} WIN_t;
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// Used to test/manipulate the window flags
#define CHKw(q,f) (int)((q)->rc.winflags & (f))
#define TOGw(q,f) (q)->rc.winflags ^= (f)
#define SETw(q,f) (q)->rc.winflags |= (f)
#define OFFw(q,f) (q)->rc.winflags &= ~(f)
#define ALTCHKw (Rc.mode_altscr ? 1 : win_warn(Warn_ALT))
#define VIZISw(q) (!Rc.mode_altscr || CHKw(q,Show_TASKON))
#define VIZCHKw(q) (VIZISw(q)) ? 1 : win_warn(Warn_VIZ)
#define VIZTOGw(q,f) (VIZISw(q)) ? TOGw(q,(f)) : win_warn(Warn_VIZ)
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// Used to test/manipulte fieldscur values
#define FLDon(c) ((c) |= 0x80)
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#define FLDget(q,i) ((FLG_t)((q)->rc.fieldscur[i] & 0x7f) - FLD_OFFSET)
#define FLDtog(q,i) ((q)->rc.fieldscur[i] ^= 0x80)
#define FLDviz(q,i) ((q)->rc.fieldscur[i] & 0x80)
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#define ENUviz(w,E) (NULL != memchr((w)->procflgs, E, (w)->maxpflgs))
#define ENUpos(w,E) ((int)((FLG_t*)memchr((w)->pflgsall, E, (w)->totpflgs) - (w)->pflgsall))
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// Support for variable width columns (and potentially scrolling too)
#define VARcol(E) (-1 == Fieldstab[E].width)
#ifndef SCROLLVAR_NO
#ifdef USE_X_COLHDR
#define VARright(w) (1 == w->maxpflgs && VARcol(w->procflgs[0]))
#else
#define VARright(w) ((1 == w->maxpflgs && VARcol(w->procflgs[0])) || \
(3 == w->maxpflgs && EU_XON == w->procflgs[0] && VARcol(w->procflgs[1])))
#endif
#define VARleft(w) (w->varcolbeg && VARright(w))
#ifdef SCROLLV_BY_1
#define SCROLLAMT 1
#else
#define SCROLLAMT 8
#endif
#endif
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// Support for a proper (visible) row #1 whenever Curwin changes
// ( or a key which might affect vertical scrolling was struck )
#define mkVIZyes Curwin->begnext != 0
#define mkVIZrow1 { Curwin->begnext = +1; Curwin->begtask -= 1; }
#define mkVIZrowX(n) { Curwin->begnext = (n); }
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/* Special Section: end ------------------------------------------ */
/* /////////////////////////////////////////////////////////////// */
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/*###### Some Miscellaneous Macro definitions ##########################*/
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/* Yield table size as 'int' */
#define MAXTBL(t) (int)(sizeof(t) / sizeof(t[0]))
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/* A null-terminating strncpy, assuming strlcpy is not available.
( and assuming callers don't need the string length returned ) */
#define STRLCPY(dst,src) { memccpy(dst, src, '\0', sizeof(dst)); dst[sizeof(dst) - 1] = '\0'; }
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/* Used to clear all or part of our Pseudo_screen */
#define PSU_CLREOS(y) memset(&Pseudo_screen[ROWMAXSIZ*y], '\0', Pseudo_size-(ROWMAXSIZ*y))
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/*
* The following three macros are used to 'inline' those portions of the
* display process involved in formatting, while protecting against any
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* potential embedded 'millesecond delay' escape sequences.
*/
/** PUTT - Put to Tty (used in many places)
. for temporary, possibly interactive, 'replacement' output
. may contain ANY valid terminfo escape sequences
. need NOT represent an entire screen row */
#define PUTT(fmt,arg...) do { \
char _str[ROWMAXSIZ]; \
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snprintf(_str, sizeof(_str), fmt, ## arg); \
putp(_str); \
} while (0)
/** PUFF - Put for Frame (used in only 3 places)
. for more permanent frame-oriented 'update' output
. may NOT contain cursor motion terminfo escapes
. assumed to represent a complete screen ROW
. subject to optimization, thus MAY be discarded */
#define PUFF(fmt,arg...) do { \
char _str[ROWMAXSIZ]; \
const int _len = snprintf(_str, sizeof(_str), fmt, ## arg); \
if (Batch) { \
char *_eol = _str + (_len < 0 ? 0 : (size_t)_len >= sizeof(_str) ? sizeof(_str)-1 : (size_t)_len); \
while (_eol > _str && _eol[-1] == ' ') _eol--; \
*_eol = '\0'; putp(_str); } \
else if (Pseudo_row >= 0 && Pseudo_row < Screen_rows) { \
char *_ptr = &Pseudo_screen[Pseudo_row++ * ROWMAXSIZ]; \
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if (!strcmp(_ptr, _str)) putp("\n"); \
else { \
strcpy(_ptr, _str); \
putp(_ptr); } } \
} while (0)
/** POOF - Pulled Out of Frame (used in only 1 place)
. for output that is/was sent directly to the terminal
but would otherwise have been counted as a Pseudo_row */
#define POOF(str,cap) do { \
putp(str); putp(cap); \
Pseudo_screen[Pseudo_row * ROWMAXSIZ] = '\0'; \
if (Pseudo_row + 1 < Screen_rows) ++Pseudo_row; \
} while (0)
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/* Orderly end, with any sort of message - see fmtmk */
#define debug_END(s) { \
void error_exit (const char *); \
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fputs(Cap_clr_scr, stdout); \
error_exit(s); \
}
/* A poor man's breakpoint, if he's too lazy to learn gdb */
#define its_YOUR_fault { *((char *)0) = '!'; }
/*###### Some Display Support *Data* ###################################*/
/* ( see module top_nls.c for the nls translatable data ) */
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/* Configuration files support */
top: allow more flexible approach for startup defaults Those references below offer more detail regarding the default startup changes beginning with version 3.3.10. It is important to remember that all such changes were supposed to impact only new users or users who had not saved the personal config file (via that 'W' command). However, I introduced a bug wherein the rcfile was not fully honored. This gave the changes a bad reputation. That bug was corrected in release 3.3.11 but the issue of default startup options keeps resurfacing. And it's clear there's no consensus on what should be included. Our --disable-modern-top configure option is of little help since it remains an all-or-nothing approach. What we need is an answer offering unlimited customization. So, this commit will provide distribution packagers or system administrators with a much more flexible way to set their own preferred startup default configuration. A new rcfile is being introduced: '/etc/topdefaultrc', whose format/content is the same as a personal rcfile. Thus once a 'proper' enterprise configuration has been established and saved via 'W', it can be copied to the /etc/ directory. Thereafter, startup in the absence of a saved rcfile will use that configuration as default. Now if a distribution packager or system administrator wishes to expose their users to some of top's advanced capabilities they can do so gradually. Perhaps setting up graph mode for summary area task and memory display while retaining the %CPU sort could be tried. Or maybe showing colors, but better customized for a particular terminal emulator. Such possibilities are now endless. [ in exploiting this new capability, i hope that the ] [ other windows (alt display mode) aren't overlooked ] Reference(s): . Sep, 2014 - Not fully honoring rcfile bug discussed https://www.freelists.org/post/procps/top-saved-rcfile-bug . Oct, 2014 - Attempt to defend new startup defaults https://bugzilla.redhat.com/show_bug.cgi?id=1153049 . Jul, 2015 - Forest vs. %CPU views discussion https://gitlab.com/procps-ng/procps/issues/6 . Oct, 2017 - Question the use of --disable-modern-top https://bugzilla.redhat.com/show_bug.cgi?id=1499410 . Oct, 2017 - Forest vs. %CPU views discussion again https://www.freelists.org/post/procps/Forest-mode-by-default-in-top-seems-a-bit-strange . Dec, 2017 - Rehash of 3.3.10 startup defaults change https://gitlab.com/procps-ng/procps/issues/78 Signed-off-by: Jim Warner <james.warner@comcast.net>
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#define SYS_RCRESTRICT "/etc/toprc"
#define SYS_RCDEFAULTS "/etc/topdefaultrc"
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#define RCF_EYECATCHER "Config File (Linux processes with windows)\n"
#define RCF_PLUS_H "\\]^_`abcdefghij"
#define RCF_PLUS_J "klmnopqrstuvwxyz"
#define RCF_VERSION_ID 'k'
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/* The default fields displayed and their order, if nothing is
specified by the loser, oops user.
note: any *contiguous* ascii sequence can serve as fieldscur
characters as long as the initial value is coordinated
with that specified for FLD_OFFSET
( we're providing for up to 86 fields currently, )
( with just one escaped value, the '\' character ) */
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#define FLD_OFFSET '%'
// seq_fields "%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz"
#ifdef ORIG_TOPDEFS
#define DEF_FIELDS "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><C4B7><EFBFBD>&')*+,-./012568<>?ABCFGHIJKLMNOPQRSTUVWXYZ[" RCF_PLUS_H RCF_PLUS_J
#else
#define DEF_FIELDS "<22>&K<><4B><EFBFBD><EFBFBD><EFBFBD>@<40><><EFBFBD>56<35>F<EFBFBD>')*+,-./0128<>?ABCGHIJLMNOPQRSTUVWXYZ[" RCF_PLUS_H RCF_PLUS_J
#endif
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/* Pre-configured windows/field groups */
#define JOB_FIELDS "<22><><EFBFBD><EFBFBD><EFBFBD>(<28><>Ļ<EFBFBD>@<<3C><>)*+,-./012568>?ABCFGHIJKLMNOPQRSTUVWXYZ[" RCF_PLUS_H RCF_PLUS_J
#define MEM_FIELDS "<22><><EFBFBD><<3C><><EFBFBD><EFBFBD><EFBFBD>MBN<42>D34<33><34>&'()*+,-./0125689FGHIJKLOPQRSTUVWXYZ[" RCF_PLUS_H RCF_PLUS_J
#define USR_FIELDS "<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)+,-./1234568;<=>?@ABCFGHIJKLMNOPQRSTUVWXYZ[" RCF_PLUS_H RCF_PLUS_J
// old top fields ( 'a'-'z' ) in positions 0-25
// other suse old top fields ( '{|' ) in positions 26-27
#define CVT_FIELDS "%&*'(-0346789:;<=>?@ACDEFGML)+,./125BHIJKNOPQRSTUVWXYZ["
#define CVT_FLDMAX 28
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/* The default values for the local config file */
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#define DEF_RCFILE { \
RCF_VERSION_ID, 0, 1, DEF_DELAY, 0, { \
{ EU_CPU, DEF_WINFLGS, 0, DEF_GRAPHS2, 1, 0, \
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COLOR_RED, COLOR_RED, COLOR_YELLOW, COLOR_RED, \
"Def", DEF_FIELDS }, \
{ EU_PID, ALT_WINFLGS, 0, ALT_GRAPHS2, 0, 0, \
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COLOR_CYAN, COLOR_CYAN, COLOR_WHITE, COLOR_CYAN, \
"Job", JOB_FIELDS }, \
{ EU_MEM, ALT_WINFLGS, 0, ALT_GRAPHS2, 0, 0, \
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COLOR_MAGENTA, COLOR_MAGENTA, COLOR_BLUE, COLOR_MAGENTA, \
"Mem", MEM_FIELDS }, \
{ EU_UEN, ALT_WINFLGS, 0, ALT_GRAPHS2, 0, 0, \
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COLOR_YELLOW, COLOR_YELLOW, COLOR_GREEN, COLOR_YELLOW, \
"Usr", USR_FIELDS } \
}, 0, DEF_SCALES2, 0, 0 }
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/* Summary Lines specially formatted string(s) --
see 'show_special' for syntax details + other cautions. */
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#define LOADAV_line "%s -%s\n"
#define LOADAV_line_alt "%s~6 -%s\n"
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/*###### For Piece of mind #############################################*/
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/* just sanity check(s)... */
#if defined(RECALL_FIXED) && defined(TERMIOS_ONLY)
# error 'RECALL_FIXED' conflicts with 'TERMIOS_ONLY'
#endif
#if (LRGBUFSIZ < SCREENMAX)
# error 'LRGBUFSIZ' must NOT be less than 'SCREENMAX'
#endif
#if defined(TERMIOS_ONLY)
# warning 'TERMIOS_ONLY' disables input recall and makes man doc incorrect
#endif
#if defined(MEMGRAPH_OLD)
# warning 'MEMGRAPH_OLD' will make the man document Section 2c. misleading
#endif
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. Reference(s): . Feb, 2022 - added 'ELAPSED' commit 9348d3b0085bd389749cc5619fdde4ec3fae5f11 . Feb, 2022 - added 'STARTED' commit 7647e96b0a35d473fa9bc644ea6107487b3b0527 Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-03-03 11:30:00 +05:30
#if defined(SCALE_FORMER) && defined(SCALE_POSTFX)
# warning 'SCALE_POSTFX' is ignored when 'SCALE_FORMER' is active
#endif
2002-11-29 04:39:48 +05:30
2011-03-31 16:45:12 +05:30
/*###### Some Prototypes (ha!) #########################################*/
/* These 'prototypes' are here exclusively for documentation purposes. */
/* ( see the find_string function for the one true required protoype ) */
2011-03-31 16:45:12 +05:30
/*------ Tiny useful routine(s) ----------------------------------------*/
//atic const char *fmtmk (const char *fmts, ...);
//atic inline char *scat (char *dst, const char *src);
//atic const char *tg2 (int x, int y);
/*------ Exit/Interrput routines ---------------------------------------*/
//atic void at_eoj (void);
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//atic void bye_bye (const char *str);
//atic void error_exit (const char *str);
//atic void sig_abexit (int sig);
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//atic void sig_endpgm (int dont_care_sig);
//atic void sig_paused (int dont_care_sig);
//atic void sig_resize (int dont_care_sig);
top: refactored for correct multi-byte string handling When this project first began implementing translation support nearly 6 years ago, we overcame many 'gettext' obstacles and limitations. And, of course, there were not any actual translations at the time so our testing was quite limited plus, in many cases, only simulated. None of that, however, can justify or excuse the total lack of attention to top's approach to NLS, especially since some actual translations have existed for years. When the issue referenced below was raised, I suffered immediate feelings of anxiety, doubt and pending doom. This was mostly because top strives to avoid line wrap at all costs and that did not bode well for multi-byte translated strings, using several bytes per character. I was also concerned over possible performance impact, assuming it was even possible to properly handle utf8. But, after wrestling with the problem for several days those initial feelings have now been replaced by guilt over any trouble I initially caused those translators. One can only imagine how frustrating it must have been after the translation effort to then see top display a misaligned column header and fields management page or truncated screens like those of help or color mapping. ------------------------------------------------------ Ok, with that off my chest let's review these changes, now that top properly handles UTF8 multi-byte strings. . Performance - virtually all of this newly added cost for multi-byte support is incurred during interactions with the user. So, performance is not really an issue. The one occasion when performance is impacted is found during 'summary_show()' processing, due to an addition of one new call to 'utf8_delta()' in 'show_special()'. . Extra Wide Characters - I have not yet and may never figure out a way to support languages like zh_CN where the characters can be wider than most other languages. . Translated User Name - at some future point we could implement translation of user names. But as the author of the issue acknowledged such names are non-standard. Thus task display still incurs no new multi-byte costs beyond those already incurred in that escape.c module. For raising the issue I extend my sincerest thanks to: Göran Uddeborg Reference(s): https://gitlab.com/procps-ng/procps/issues/68 Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-09-28 10:52:22 +05:30
/*------ Special UTF-8 Multi-Byte support ------------------------------*/
/*atic char UTF8_tab[] = { ... } */
//atic inline int utf8_cols (const unsigned char *p, int n);
top: refactored for correct multi-byte string handling When this project first began implementing translation support nearly 6 years ago, we overcame many 'gettext' obstacles and limitations. And, of course, there were not any actual translations at the time so our testing was quite limited plus, in many cases, only simulated. None of that, however, can justify or excuse the total lack of attention to top's approach to NLS, especially since some actual translations have existed for years. When the issue referenced below was raised, I suffered immediate feelings of anxiety, doubt and pending doom. This was mostly because top strives to avoid line wrap at all costs and that did not bode well for multi-byte translated strings, using several bytes per character. I was also concerned over possible performance impact, assuming it was even possible to properly handle utf8. But, after wrestling with the problem for several days those initial feelings have now been replaced by guilt over any trouble I initially caused those translators. One can only imagine how frustrating it must have been after the translation effort to then see top display a misaligned column header and fields management page or truncated screens like those of help or color mapping. ------------------------------------------------------ Ok, with that off my chest let's review these changes, now that top properly handles UTF8 multi-byte strings. . Performance - virtually all of this newly added cost for multi-byte support is incurred during interactions with the user. So, performance is not really an issue. The one occasion when performance is impacted is found during 'summary_show()' processing, due to an addition of one new call to 'utf8_delta()' in 'show_special()'. . Extra Wide Characters - I have not yet and may never figure out a way to support languages like zh_CN where the characters can be wider than most other languages. . Translated User Name - at some future point we could implement translation of user names. But as the author of the issue acknowledged such names are non-standard. Thus task display still incurs no new multi-byte costs beyond those already incurred in that escape.c module. For raising the issue I extend my sincerest thanks to: Göran Uddeborg Reference(s): https://gitlab.com/procps-ng/procps/issues/68 Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-09-28 10:52:22 +05:30
//atic int utf8_delta (const char *str);
//atic int utf8_embody (const char *str, int width);
//atic const char *utf8_justify (const char *str, int width, int justr);
top: extend multi-byte support to 'Inspection' feature The previous commit implemented multi-byte support for the basic top user interaction and display provisions. This commit completes multi-byte support by addressing that 'Inspect Other Output' feature (the 'Y' command). Few people probably exploit this very powerful feature which allows the perusing of any file or piped output. And even if nobody uses 'Y', someone will stumble over it on the help screen and try it out. Assuming top was not built with INSP_OFFDEMO defined, they'll end up on the screen our translators have faithfully translated. Without this patch, such a screen would display with a bunch of 'unprintable' characters which will then show in the standard (less-like) way as: '^A', '<C3>', etc. In other words, those poor screens will be a big mess! [ this program can even display an executable binary ] [ while at that same time supporting Find/Find Next. ] [ imagine, a file with no guarantee of real strings! ] [ just try a Find using less with such binary files. ] With this commit, the translated 'Y' demo screens will now be properly shown, providing no invalid multi-byte characters have been detected. Should that be the case then they'll be displayed in that less-like way above. And, if users go on to fully exploit this 'Y' command, there is a good chance that a file or pipe might yield output in a utf-8 multi-byte form. Should that be true such output will thus be handled appropriately by top. [ in many respects, this change was more challenging ] [ than the basic support within the previous commit. ] [ story of my life: least used = most effort needed. ] Many thanks to our procps-ng translators which enabled a proper test of these changed 'Y' command provisions: . Vietnamese: Trần Ngọc Quân . Polish: Jakub Bogusz . German: Mario Blättermann . French: Frédéric Marchal, Stéphane Aulery [ and my sincerest apologies too, for my negligence! ] Reference(s): https://gitlab.com/procps-ng/procps/issues/68 Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-09-28 11:03:33 +05:30
//atic int utf8_proper_col (const char *str, int col, int tophysical);
2011-03-31 16:45:12 +05:30
/*------ Misc Color/Display support ------------------------------------*/
//atic void capsmk (WIN_t *q);
//atic void show_msg (const char *str);
//atic int show_pmt (const char *str);
//atic void show_scroll (void);
2011-03-31 16:45:12 +05:30
//atic void show_special (int interact, const char *glob);
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>
2012-11-25 10:30:05 +05:30
/*------ Low Level Memory/Keyboard/File I/O support --------------------*/
//atic void *alloc_c (size_t num);
//atic void *alloc_r (void *ptr, size_t num);
//atic char *alloc_s (const char *str);
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//atic inline int ioa (struct timespec *ts);
//atic int ioch (int ech, char *buf, unsigned cnt);
//atic int iokey (int action);
//atic char *ioline (const char *prompt);
//atic int mkfloat (const char *str, float *num, int whole);
//atic int readfile (FILE *fp, char **baddr, size_t *bsize, size_t *bread);
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/*------ Small Utility routines ----------------------------------------*/
//atic float get_float (const char *prompt);
//atic int get_int (const char *prompt);
//atic inline const char *hex_make (long num, int noz);
2011-03-31 16:45:12 +05:30
//atic const char *user_certify (WIN_t *q, const char *str, char typ);
/*------ Basic Formatting support --------------------------------------*/
//atic inline const char *justify_pad (const char *str, int width, int justr);
//atic inline const char *make_chr (const char ch, int width, int justr);
//atic inline const char *make_num (long num, int width, int justr, int col, int noz);
//atic inline const char *make_str (const char *str, int width, int justr, int col);
//atic inline const char *make_str_utf8 (const char *str, int width, int justr, int col);
//atic const char *scale_mem (int target, float num, int width, int justr);
//atic const char *scale_num (float num, int width, int justr);
//atic const char *scale_pcnt (float num, int width, int justr, int xtra);
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. Reference(s): . Feb, 2022 - added 'ELAPSED' commit 9348d3b0085bd389749cc5619fdde4ec3fae5f11 . Feb, 2022 - added 'STARTED' commit 7647e96b0a35d473fa9bc644ea6107487b3b0527 Signed-off-by: Jim Warner <james.warner@comcast.net>
2022-03-03 11:30:00 +05:30
//atic const char *scale_tics (TIC_t tics, int width, int justr, int target);
2011-03-31 16:45:12 +05:30
/*------ Fields Management support -------------------------------------*/
/*atic struct Fieldstab[] = { ... } */
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//atic void adj_geometry (void);
//atic void build_headers (void);
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//atic void calibrate_fields (void);
//atic void display_fields (int focus, int extend);
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//atic void fields_utility (void);
//atic inline void widths_resize (void);
2011-03-31 16:45:12 +05:30
//atic void zap_fieldstab (void);
top: introduce background updates via separate threads After the stage had been set in the previous patch, in this patch we will actually implement those background updates via 3 separate threads. The design was simple: . the do-while loops have now been made truly infinite . 2 semaphores per thread allow needed synchronization . 1 semaphore will provide for each thread to sem_wait . 1 semaphore will provide for display o/p to sem_wait . and all 3 thread's program name was made descriptive A complication was the potential for a signal directed to one of our new threads. Rather than having a thread try to deal with such signals, we pass a mask with all signals blocked at pthread_create time. Thereafter any subsequent signals are forwarded to the parent thread. [ also sigprocmask was exchanged for pthread_sigmask ] [ since warned about use "in multithreaded process". ] [ plus we also modified each of those POSIX comments ] [ about 2004 to agree with current signal-safety(7). ] Sadly, after all this effort there were no performance benefits to having separate threads. In fact there was a measurable performance degradation when running with ever smaller delay intervals. But even with a delay of 1/10 second the 'real' cost increase is only about 1%. There is one way whereby any additional costs might be eliminated (at least seemingly). One could introduce 2 separate sets of contexts for each of those 3 threads. Then retrieval & display could be overlapped. However, the resulting display wouldn't represent the real-time results. Rather it would be stale by 1 delay interval. Signed-off-by: Jim Warner <james.warner@comcast.net>
2021-09-18 10:30:00 +05:30
/*------ Library Interface (as separate threads) -----------------------*/
//atic void *cpus_refresh (void *unused);
//atic void *memory_refresh (void *unused);
//atic void *tasks_refresh (void *unused);
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>
2012-11-25 10:30:05 +05:30
/*------ Inspect Other Output ------------------------------------------*/
//atic void insp_cnt_nl (void);
#ifndef INSP_OFFDEMO
//atic void insp_do_demo (char *fmts, int pid);
#endif
//atic void insp_do_file (char *fmts, int pid);
//atic void insp_do_pipe (char *fmts, int pid);
//atic inline int insp_find_ofs (int col, int row);
//atic void insp_find_str (int ch, int *col, int *row);
top: extend multi-byte support to 'Inspection' feature The previous commit implemented multi-byte support for the basic top user interaction and display provisions. This commit completes multi-byte support by addressing that 'Inspect Other Output' feature (the 'Y' command). Few people probably exploit this very powerful feature which allows the perusing of any file or piped output. And even if nobody uses 'Y', someone will stumble over it on the help screen and try it out. Assuming top was not built with INSP_OFFDEMO defined, they'll end up on the screen our translators have faithfully translated. Without this patch, such a screen would display with a bunch of 'unprintable' characters which will then show in the standard (less-like) way as: '^A', '<C3>', etc. In other words, those poor screens will be a big mess! [ this program can even display an executable binary ] [ while at that same time supporting Find/Find Next. ] [ imagine, a file with no guarantee of real strings! ] [ just try a Find using less with such binary files. ] With this commit, the translated 'Y' demo screens will now be properly shown, providing no invalid multi-byte characters have been detected. Should that be the case then they'll be displayed in that less-like way above. And, if users go on to fully exploit this 'Y' command, there is a good chance that a file or pipe might yield output in a utf-8 multi-byte form. Should that be true such output will thus be handled appropriately by top. [ in many respects, this change was more challenging ] [ than the basic support within the previous commit. ] [ story of my life: least used = most effort needed. ] Many thanks to our procps-ng translators which enabled a proper test of these changed 'Y' command provisions: . Vietnamese: Trần Ngọc Quân . Polish: Jakub Bogusz . German: Mario Blättermann . French: Frédéric Marchal, Stéphane Aulery [ and my sincerest apologies too, for my negligence! ] Reference(s): https://gitlab.com/procps-ng/procps/issues/68 Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-09-28 11:03:33 +05:30
//atic void insp_mkrow_raw (int col, int row);
//atic void insp_mkrow_utf8 (int col, int row);
//atic void insp_show_pgs (int col, int row, int max);
//atic int insp_view_choice (struct pids_stack *p);
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>
2012-11-25 10:30:05 +05:30
//atic void inspection_utility (int pid);
/*------ Other Filtering ------------------------------------------------*/
//atic const char *osel_add (WIN_t *q, int ch, char *glob, int push);
//atic void osel_clear (WIN_t *q);
//atic inline int osel_matched (const WIN_t *q, FLG_t enu, const char *str);
2011-03-31 16:45:12 +05:30
/*------ Startup routines ----------------------------------------------*/
//atic void before (char *me);
//atic int config_cvt (WIN_t *q);
//atic int config_insp (FILE *fp, char *buf, size_t size);
//atic int config_osel (FILE *fp, char *buf, size_t size);
//atic const char *configs_file (FILE *fp, const char *name, float *delay);
//atic int configs_path (const char *const fmts, ...);
//atic void configs_reads (void);
//atic void parse_args (int argc, char **argv);
2011-03-31 16:45:12 +05:30
//atic void whack_terminal (void);
/*------ Windows/Field Groups support ----------------------------------*/
//atic void win_names (WIN_t *q, const char *name);
//atic void win_reset (WIN_t *q);
//atic WIN_t *win_select (int ch);
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//atic int win_warn (int what);
//atic void wins_clrhlp (WIN_t *q, int save);
2011-03-31 16:45:12 +05:30
//atic void wins_colors (void);
//atic void wins_reflag (int what, int flg);
//atic void wins_stage_1 (void);
//atic void wins_stage_2 (void);
//atic inline int wins_usrselect (const WIN_t *q, int idx);
/*------ Forest View support -------------------------------------------*/
//atic void forest_adds (const int self, int level);
//atic void forest_begin (WIN_t *q);
//atic void forest_config (WIN_t *q);
//atic inline const char *forest_display (const WIN_t *q, int idx);
/*------ Interactive Input Tertiary support ----------------------------*/
//atic inline int find_ofs (const WIN_t *q, const char *buf);
2011-12-17 01:34:38 +05:30
//atic void find_string (int ch);
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//atic void help_view (void);
//atic void other_filters (int ch);
//atic void write_rcfile (void);
/*------ Interactive Input Secondary support (do_key helpers) ----------*/
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//atic void keys_global (int ch);
//atic void keys_summary (int ch);
//atic void keys_task (int ch);
//atic void keys_window (int ch);
//atic void keys_xtra (int ch);
/*------ Tertiary summary display support (summary_show helpers) -------*/
//atic inline int sum_see (const char *str, int nobuf);
//atic int sum_tics (struct stat_stack *this, const char *pfx, int nobuf);
//atic int sum_unify (struct stat_stack *this, int nobuf);
/*------ Secondary summary display support (summary_show helpers) ------*/
//atic void do_cpus (void);
//atic void do_memory (void);
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/*------ Main Screen routines ------------------------------------------*/
//atic void do_key (int ch);
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//atic void summary_show (void);
//atic const char *task_show (const WIN_t *q, int idx);
//atic void window_hlp (void);
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//atic int window_show (WIN_t *q, int wmax);
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/*------ Entry point plus two ------------------------------------------*/
//atic void frame_hlp (int wix, int max);
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//atic void frame_make (void);
// int main (int argc, char *argv[]);
2002-05-30 09:14:46 +05:30
#endif /* _Itop */
2011-03-31 16:45:12 +05:30