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Commit Graph

178 Commits

Author SHA1 Message Date
Denys Vlasenko
28f4126093 top: improve large PID display in memory ('s') mode 
Display VSZ[RW] fields in more compact form if PID is wider.

function                                             old     new   delta
display_topmem_process_list                          564     614     +50
ulltoa5_and_space                                      -      14     +14
ulltoa6_and_space                                     14       -     -14
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 1/0 up/down: 64/-14)             Total: 50 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2023-11-23 01:18:02 +01:00
Denys Vlasenko
669c40ed8e top: stop using div() from libc, compilers now do it better 
function                                             old     new   delta
div                                                   23       -     -23
display_process_list                                1237    1178     -59
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 0/1 up/down: 0/-82)             Total: -82 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2023-02-13 15:05:19 +01:00
Denys Vlasenko
8d67007a4d top: improve large PID display in memory ('s') mode 
function                                             old     new   delta
display_topmem_process_list                          530     564     +34

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-05-12 11:44:47 +02:00
Denys Vlasenko
1099a27696 top: code shrink 
function                                             old     new   delta
display_process_list                                1186    1168     -18

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-05-10 14:04:34 +02:00
Denys Vlasenko
69f82e305b top: code shrink 
function                                             old     new   delta
display_process_list                                1191    1186      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-05-10 13:51:09 +02:00
Denys Vlasenko
294881d2e9 top: fix display of large PID/PPID 
function                                             old     new   delta
display_process_list                                1077    1191    +114
.rodata                                           104803  104807      +4
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 118/0)             Total: 118 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-05-10 12:56:28 +02:00
Denys Vlasenko
12566e7f9b ash,hush: fix handling of SIGINT while waiting for interactive input 
function                                             old     new   delta
lineedit_read_key                                    160     237     +77
__pgetc                                              522     589     +67
fgetc_interactive                                    244     309     +65
safe_read_key                                          -      39     +39
read_key                                             588     607     +19
record_pending_signo                                  23      32      +9
signal_handler                                        75      81      +6
.rodata                                           104312  104309      -3
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 6/1 up/down: 282/-3)            Total: 279 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2022-01-17 11:46:23 +01:00
Denys Vlasenko
1849285a20 *: more --help tweaks, mostly expanding ts --help 
function                                             old     new   delta
packed_usage                                       33554   33596     +42

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-06-13 03:12:09 +02:00
Ron Yorston
cad3fc743a libbb: introduce and use fputs_stdout 
function                                             old     new   delta
fputs_stdout                                           -      12     +12
zxc_vm_process                                      7237    7230      -7
yes_main                                              85      78      -7
write_block                                          380     373      -7
wrapf                                                305     298      -7
strings_main                                         437     430      -7
show_bridge                                          353     346      -7
rev_main                                             384     377      -7
put_prompt_custom                                     58      51      -7
put_cur_glyph_and_inc_cursor                         168     161      -7
print_numbered_lines                                 152     145      -7
print_named_ascii                                    130     123      -7
print_name                                           135     128      -7
print_login_issue                                    386     379      -7
print_ascii                                          208     201      -7
powertop_main                                       1249    1242      -7
od_main                                             1789    1782      -7
logread_main                                         518     511      -7
head_main                                            804     797      -7
display_process_list                                1319    1312      -7
cut_main                                            1002     995      -7
bb_dump_dump                                        1550    1543      -7
bb_ask_noecho                                        393     386      -7
baseNUM_main                                         702     695      -7
expand_main                                          755     745     -10
dumpleases_main                                      497     487     -10
write1                                                12       -     -12
putcsi                                                37      23     -14
print_login_prompt                                    55      41     -14
paste_main                                           525     511     -14
cat_main                                             440     426     -14
print_it                                             245     230     -15
print_addrinfo                                      1188    1171     -17
print_rule                                           770     750     -20
print_linkinfo                                       842     822     -20
httpd_main                                           791     771     -20
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 0/34 up/down: 12/-341)         Total: -329 bytes

Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2021-02-03 20:52:40 +01:00
Denys Vlasenko
df1f479fc5 randomconfig fixes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2020-06-23 03:13:55 +02:00
Denys Vlasenko
ac78f2ac96 top: do not use previous colleced data wheh "h" toggles threads display 
This prevents first update from showing incorrect CPU usage data

function                                             old     new   delta
handle_input                                         620     643     +23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-08-11 16:17:11 +02:00
James Byrne
6937487be7 libbb: reduce the overhead of single parameter bb_error_msg() calls 
Back in 2007, commit 0c97c9d437 ("'simple' error message functions by
Loic Grenie") introduced bb_simple_perror_msg() to allow for a lower
overhead call to bb_perror_msg() when only a string was being printed
with no parameters. This saves space for some CPU architectures because
it avoids the overhead of a call to a variadic function. However there
has never been a simple version of bb_error_msg(), and since 2007 many
new calls to bb_perror_msg() have been added that only take a single
parameter and so could have been using bb_simple_perror_message().

This changeset introduces 'simple' versions of bb_info_msg(),
bb_error_msg(), bb_error_msg_and_die(), bb_herror_msg() and
bb_herror_msg_and_die(), and replaces all calls that only take a
single parameter, or use something like ("%s", arg), with calls to the
corresponding 'simple' version.

Since it is likely that single parameter calls to the variadic functions
may be accidentally reintroduced in the future a new debugging config
option WARN_SIMPLE_MSG has been introduced. This uses some macro magic
which will cause any such calls to generate a warning, but this is
turned off by default to avoid use of the unpleasant macros in normal
circumstances.

This is a large changeset due to the number of calls that have been
replaced. The only files that contain changes other than simple
substitution of function calls are libbb.h, libbb/herror_msg.c,
libbb/verror_msg.c and libbb/xfuncs_printf.c. In miscutils/devfsd.c,
networking/udhcp/common.h and util-linux/mdev.c additonal macros have
been added for logging so that single parameter and multiple parameter
logging variants exist.

The amount of space saved varies considerably by architecture, and was
found to be as follows (for 'defconfig' using GCC 7.4):

Arm:     -92 bytes
MIPS:    -52 bytes
PPC:   -1836 bytes
x86_64: -938 bytes

Note that for the MIPS architecture only an exception had to be made
disabling the 'simple' calls for 'udhcp' (in networking/udhcp/common.h)
because it made these files larger on MIPS.

Signed-off-by: James Byrne <james.byrne@origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-07-02 11:35:03 +02:00
Thomas De Schampheleire
2b6282117f top: provide cmdline argument '-H' to enable thread scanning by default 
In particular useful when you want to evaluate the threads in batch mode:
    top -Hbn1

function                                             old     new   delta
top_main                                             928     941     +13
packed_usage                                       33317   33319      +2
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 15/0)               Total: 15 bytes

Signed-off-by: Philippe Belet <philippe.belet@nokia.com>
Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-04-04 14:14:24 +02:00
Denys Vlasenko
4a6748662a top: tweak --help 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2019-02-27 16:45:39 +01:00
Denys Vlasenko
b097a84d62 config: update size information 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-12-28 03:20:17 +01:00
Denys Vlasenko
4c20d9f2b0 extend fractional duration support to "top -d N.N" and "timeout" 
function                                             old     new   delta
parse_duration_str                                     -     168    +168
sleep_for_duration                                     -     157    +157
top_main                                             885     928     +43
timeout_main                                         269     312     +43
handle_input                                         571     614     +43
duration_suffixes                                      -      40     +40
sfx                                                   40       -     -40
sleep_main                                           364      79    -285
------------------------------------------------------------------------------
(add/remove: 4/1 grow/shrink: 3/1 up/down: 494/-325)          Total: 169 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-08-03 18:17:12 +02:00
Denys Vlasenko
b3e98b1ccc top: fix "warning: unused variable new_mask" 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-03-19 20:00:10 +01:00
Denys Vlasenko
a2cae937d0 top: much faster cursor key navigation by avoiding process rescan 
function                                             old     new   delta
handle_input                                         549     560     +11
top_main                                             889     891      +2

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-03-07 04:47:52 +01:00
Denys Vlasenko
75e56a3db9 top: do unsigned rather than signed division in do_stats() 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-03-07 04:20:22 +01:00
Denys Vlasenko
86107d6dc7 top: handle much larger VSZ values 
function                                             old     new   delta
display_process_list                                1018     999     -19

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2018-03-07 03:59:52 +01:00
Denys Vlasenko
8187e01438 *: use ESC define instead of "\033"; use ESC[m instead of ESC[0m 
text	   data	    bss	    dec	    hex	filename
 922535	    481	   6832	 929848	  e3038	busybox_old
 922534	    481	   6832	 929847	  e3037	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-09-13 22:48:30 +02:00
Denys Vlasenko
e440b39416 *: stop using atexit in non-debug build: saves ~260 in bss with musl 
"builtin" below is atexit's 32-element global array of functions to call.

function                                             old     new   delta
top_main                                             879     889     +10
launch_helper                                        185     193      +8
powertop_main                                       1555    1559      +4
sed_main                                             651     650      -1
slot                                                   4       -      -4
call                                                   4       -      -4
atexit                                                23       -     -23
kill_helper                                           31       -     -31
__funcs_on_exit                                      120       -    -120
__cxa_atexit                                         168       -    -168
builtin                                              260       -    -260
------------------------------------------------------------------------------
(add/remove: 0/8 grow/shrink: 3/1 up/down: 22/-611)          Total: -589 bytes
   text	   data	    bss	    dec	    hex	filename
 912364	    563	   6132	 919059	  e0613	busybox_old
 912035	    563	   5844	 918442	  e03aa	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-16 17:45:32 +02:00
Denys Vlasenko
d80302db99 top: switch to malloced "globals". 
This seems to be more efficient:

function                                             old     new   delta
clearmems                                              -      28     +28
display_process_list                                1001    1018     +17
read_cpu_jiffy                                       171     177      +6
do_stats                                             194     198      +4
reset_term                                            20      23      +3
topmem_sort                                           63      65      +2
mult_lvl_cmp                                          44      45      +1
get_jiffy_counts                                     247     248      +1
display_topmem_process_list                          549     546      -3
top_main                                             912     879     -33
handle_input                                         630     549     -81
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 7/3 up/down: 62/-117)           Total: -55 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-16 11:40:10 +02:00
Denys Vlasenko
727948e585 getopt32: factor out code to treat all args as options 
Working towards making getopt32() xmalloc-free

function                                             old     new   delta
make_all_argv_opts                                     -      58     +58
top_main                                             914     912      -2
getopt32                                            1517    1458     -59
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 0/2 up/down: 58/-61)             Total: -3 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-08-04 16:33:23 +02:00
Denys Vlasenko
72089cf6b4 config: deindent all help texts 
Those two spaces after tab have no effect, and always a nuisance when editing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-21 09:50:55 +02:00
Denys Vlasenko
4eed2c6c50 Update menuconfig items with approximate applet sizes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-07-18 22:01:24 +02:00
Denys Vlasenko
6c1f348fa7 Move FEATURE_USE_TERMIOS config option to two applets which use it 
No code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-11 16:27:12 +01:00
Denys Vlasenko
01ccdd1d3c libbb: consolidate the code to set termios unbuffered mode 
function                                             old     new   delta
set_termios_to_raw                                     -     116    +116
count_lines                                           72      74      +2
powertop_main                                       1458    1430     -28
top_main                                             943     914     -29
more_main                                            759     714     -45
fsck_minix_main                                     2969    2921     -48
conspy_main                                         1197    1135     -62
rawmode                                               99      36     -63
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/6 up/down: 118/-275)         Total: -157 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-11 16:17:59 +01:00
Denys Vlasenko
0fd9fb4244 top: FEATURE_USE_TERMIOS shouldn't control reading of screen size 
It controls whether we take input.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2017-01-11 10:50:08 +01:00
Denys Vlasenko
718e4fd564 top: fix help text: with !TERMIOS, no keys are affected top output 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-12-03 12:09:50 +01:00
Denys Vlasenko
f8f81ed7aa Convert all procps/* applets to "new style" applet definitions 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-11-23 06:23:44 +01:00
Denys Vlasenko
aedc3fe19f top: move free(prev_hist) out of signal path 
It was seen being called recursively on repeated signals,
leading to double free

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-08-19 11:07:31 +02:00
Denys Vlasenko
3e134ebf6a *: slap on a few ALIGN1/2s where appropriate 
The result of looking at "grep -F -B2 '*fill*' busybox_unstripped.map"

   text	   data	    bss	    dec	    hex	filename
 829901	   4086	   1904	 835891	  cc133	busybox_before
 829665	   4086	   1904	 835655	  cc047	busybox

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-22 18:09:21 +02:00
Denys Vlasenko
47cfbf32fd *: add most of the required setup_common_bufsiz() calls 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 18:18:48 +02:00
Denys Vlasenko
e6a2f4cc5a libbb: make bb_common_bufsiz1 1 kbyte, add capability to use bss tail for it 
The config item is FEATURE_USE_BSS_TAIL. When it is off (default):

function                                             old     new   delta
read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
push                                                  46      44      -2
inetd_main                                          2136    2134      -2
uevent_main                                          421     418      -3
addLines                                              97      92      -5
bb_common_bufsiz1                                   8193    1024   -7169
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 8/5 up/down: 62/-7181)        Total: -7119 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829901	   4086	   1904	 835891	  cc133	busybox_unstripped

FEATURE_USE_BSS_TAIL=y:

read_config                                          210     228     +18
doCommands                                          2279    2294     +15
ipneigh_list_or_flush                                763     772      +9
ipaddr_list_or_flush                                1256    1261      +5
display_process_list                                1301    1306      +5
conspy_main                                         1378    1383      +5
do_lzo_compress                                      352     355      +3
do_lzo_decompress                                    565     567      +2
inetd_main                                          2136    2134      -2
bb_common_bufsiz1                                   8193       -   -8193
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 8/1 up/down: 62/-8195)        Total: -8133 bytes
   text	   data	    bss	    dec	    hex	filename
 829850	   4086	   9080	 843016	  cdd08	busybox_old
 829911	   4086	    880	 834877	  cbd3d	busybox_unstripped

FIXME: setup_common_bufsiz() calls are missing.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2016-04-21 17:39:11 +02:00
Denys Vlasenko
4ad702c0a7 top: make sort field for 's' mode less confusing 
function                                             old     new   delta
display_topmem_process_list                          542     565     +23

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-14 22:30:47 +02:00
Denys Vlasenko
7b85ec30b5 *: more BUILD_BUG_ON conversions 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2015-10-13 17:17:34 +02:00
Denys Vlasenko
6c6d37ee45 top: fix memset length (sizeof(ptr) vs sizeof(array) problem) 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-07-29 17:00:30 +02:00
Timo Teräs
7df1f1dda1 top: fix and merge code to parse /proc/meminfo 
display_header() code to parse meminfo as is was buggy:
- uninitialized variables were used if meminfo was not as expected
- meminfo parsing failed on new kernels (3.14+) as new field 'MemAvailable'
  was introduced between MemFree and Buffers
- shared memory was handled only for ancient kernels (2.4.x and earlier)

as result Buffers and shared memory fields were shown with bogus values
on current kernels.

The new code does not try to parse the old style summary header, as the
separated fields are always present (it saves code size). Additionally,
both Shmem (2.6+) and MemShared (2.4 and earlier) fields are now parsed
and summed for shared memory usage; as only one of them exists depending
on kernel version.

display_topmem_header() parses also meminfo so this makes it use the
same code for code shrink.

function                                             old     new   delta
display_header                                         -     681    +681
display_topmem_process_list                          465     684    +219
parse_meminfo                                          -     189    +189
static.fields                                          -     106    +106
static.match                                         132       -    -132
.rodata                                           120254  120117    -137
display_topmem_header                                513       -    -513
display_process_list                                1705     667   -1038
------------------------------------------------------------------------------
(add/remove: 3/2 grow/shrink: 1/2 up/down: 1195/-1820)       Total: -625 bytes

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-07-27 21:49:27 +02:00
Bartosz Golaszewski
2de232da53 top.c: fix compilation warnings 
pfd[1] is unused

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2014-01-20 03:26:34 +01:00
Denys Vlasenko
327f550669 Use unsigned printf/scanf conversion where more appropriate 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-11-29 16:45:45 +01:00
Denys Vlasenko
dc57294485 top: fix breakage introduced by previous commit 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-09-06 12:59:48 +02:00
Denys Vlasenko
a407cf74cc Make smart_ulltoa return pointer to end (allows for code shink in callers) 
function                                             old     new   delta
smart_ulltoa5                                        405     408      +3
smart_ulltoa4                                        273     276      +3
list_table                                          1113    1114      +1
scale                                                 36      34      -2
put_lu                                                55      53      -2
ulltoa6_and_space                                     19      14      -5
powertop_main                                       1470    1461      -9

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-09-06 12:53:14 +02:00
Denys Vlasenko
778794d1dd *: reuse more strings 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-22 10:13:52 +01:00
Denys Vlasenko
60cb48ca50 whitespace cleanup. no code changes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2013-01-14 15:57:44 +01:00
Denys Vlasenko
c4f2d997a4 libbb: correctness/size tweaks in signal-related helpers 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-27 13:20:34 +02:00
Denys Vlasenko
73a1990897 top: do not touch stdin if -b 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-26 16:58:25 +02:00
Denys Vlasenko
ffe03f04cb top: fix build failure in !USE_TERMIOS case 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-25 12:48:46 +02:00
Denys Vlasenko
2fb8d0dee9 top: implement scrolling up/down (_very_ useful) 
function                                             old     new   delta
handle_input                                         494     564     +70
top_main                                             928     947     +19
display_topmem_process_list                          363     381     +18
display_process_list                                1442    1453     +11
clearmems                                             38      28     -10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 4/1 up/down: 118/-10)           Total: 108 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2012-09-21 13:04:37 +02:00
Denys Vlasenko
16714245f9 add INIT_G()'s. No code changes. 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
 2011-09-21 01:59:15 +02:00