Commit Graph

2639 Commits

Author SHA1 Message Date
Denis Lisov e07fce7014 LinuxProcessList_recurseProcTree: open dirfd first
A process can die between reading the directory listing and opening the
directory FD (if HAVE_OPENAT) or /proc files (otherwise) for reading the
process data. This race would cause LinuxProcessList_recurseProcTree to
remove it from the list immediately, which is unexpected in the
"highlight dying processes" mode and can break the tree structure.
This patch closes this race in the HAVE_OPENAT case by only accessing
the process entry after the directory FD has been opened.
2022-05-05 10:00:34 +02:00
Daniel Lange e08eec813c Remove redundant sscanf calls (in (s)scanf a blank validates _zero_ or more whitespace)
man sscanf(3):
A sequence of white-space characters (space, tab, newline, etc.; see isspace(3)).
This directive matches any amount of white space, including none, in the input.
2022-05-05 09:34:25 +02:00
Christian Göttsche 549fcb6bb8 Always abort on overflow in String_cat
Not only in debug mode.
2022-05-05 09:19:14 +02:00
Charlie Vieth 08166b27b1 ProcessList: fix quadratic process removal when scanning
This commit changes ProcessList_scan to lazily remove Processes by
index, which is known, instead of performing a brute-force search by
pid and immediately reclaiming the lost vector space via compaction.

Searching by pid is potentially quadratic in ProcessList_scan because
the process we are searching for is always at the back of the vector
(the scan starts from the back of the vector). Additionally, removal
via Vector_remove immediately reclaims space (by sliding elements
down).

With these changes process removal in ProcessList_scan is now linear.

Changes:
  * ProcessList: add new ProcessList_removeIndex function to remove
    by index
  * Vector: add Vector_softRemove and Vector_compact functions to
    support lazy removal/deletion of entries Vector_softRemove
    Vector_compact
  * Vector: replace Vector_count with Vector_countEquals since it only
    used for consistency assertions.
2022-05-05 09:17:51 +02:00
Nathan Scott c7413fd677 Merge branch 'natoscott-changelog-3.2.0' 2022-05-01 16:31:20 +10:00
Nathan Scott 8f0475cd73 Merge branch 'changelog-3.2.0' of https://github.com/natoscott/htop into natoscott-changelog-3.2.0 2022-05-01 16:31:11 +10:00
Nathan Scott a155fd0f8b Merge branch 'natoscott-coverity-scan' 2022-05-01 16:30:51 +10:00
Nathan Scott 549543f8e4 Merge branch 'coverity-scan' of https://github.com/natoscott/htop into natoscott-coverity-scan 2022-05-01 16:29:55 +10:00
Nathan Scott 10b541b5e4
Update Settings_newScreen with single-line sortKey checking.
Co-authored-by: BenBE <BenBE@geshi.org>
2022-05-01 16:21:13 +10:00
Daniel Lange 73f08debe0 Add note that the Tree view setting is per Screen tab now 2022-04-30 19:45:00 +02:00
Daniel Lange 8b98d3effb Document screen tab switching (TAB, Shift-TAB keys) 2022-04-30 17:06:59 +02:00
Christian Göttsche 7e66ee1d28 FreeBSD: free emulation string 2022-04-30 17:05:59 +02:00
Christian Göttsche a7a6571d14 Fix typo 2022-04-30 17:03:29 +02:00
Nathan Scott cde72dd0b0 Remove redundant null checks on Settings_write (covscan)
Coverity scan reports that there is dead code in Settings_write
checking for nulls that have already been dereferenced on every
code path leading to the check.  This is likely a hangover from
times when the screens pointer was only conditionally allocated
- they're not needed anymore.
2022-04-30 13:55:56 +10:00
Nathan Scott cb61865bb9 Add array bounds checking for the Process_fields array (covscan)
Coverity scan reports there may be a code path that would cause
an overrun in the (relatively new) ScreenSettings code where it
evaluates default sort direction.  Add bounds check and default
to descending instead of a potentially invalid array access.
2022-04-30 13:50:25 +10:00
Nathan Scott c144bf9ae5 Add changelog entries for pending htop-3.2.0 release, update version 2022-04-29 18:03:53 +10:00
Daniel Lange ae518e20b7 Merge branch 'main' of thesamesam/htop 2022-04-26 13:56:40 +02:00
Daniel Lange cdf3f3c50b Remove stray fprintf left from testing (introduced in 7039abe) 2022-04-26 13:35:35 +02:00
Benny Baumann 1f2f4fe891 Assume process just started when kproc->ki_start returns garbage 2022-04-21 08:56:56 +02:00
Benny Baumann ec809b7f71 Avoid extremely large year values when printing time 2022-04-21 08:56:56 +02:00
Benny Baumann b83ce85d89 Force elapsed time display to zero if process seems started in the future 2022-04-21 08:56:56 +02:00
Explorer09 ee1bf2f917 Process: Fix PID & UID column widths off-by-one error
If the max PID or UID value for a platform is exactly a power of ten
(10000, 100000, etc.) the column widths of PID and UID would be 1 char
less than the correct number of digits. This is caused by the wrong
rounding function (ceil(x)); change to the correct one (trunc(x) + 1).

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
2022-04-18 12:30:40 +02:00
ahsmha afc4a9d657 README: Add macOS build dependency install command 2022-04-14 20:28:11 +02:00
Daniel Lange 3f3691886a Merge branch 'allow-multiple-filters-and-search-strings' into main
Closes #961
2022-04-14 16:45:29 +02:00
Daniel Lange 99aa906bc5 Merge branch 'improve-filter-label' into main 2022-04-14 16:44:51 +02:00
Daniel Lange df955c8991 Make CLANG happy (-Wembedded-directive) 2022-04-07 12:33:22 +02:00
Daniel Lange 6a7b3fdc7d Do not show help for -M / --no-mouse if HAVE_GETMOUSE is undefined 2022-04-07 11:52:22 +02:00
hwangcc23 72c56691ec Fix a compile warning: comparison of unsigned enum expression < 0 is always false
Get this warning when compiling Settings.c on the Mac OS X with clang-800.0.42.1.
Settings.c:447:28: warning: comparison of unsigned enum expression < 0 is always false [-Wtautological-compare]
         if (this->hLayout < 0 || this->hLayout >= LAST_HEADER_LAYOUT)
             ~~~~~~~~~~~~~ ^ ~

This patch fixes the problem.
2022-04-05 09:23:03 +02:00
Fabrice Fontaine 4ccad46045 configure.ac: fix static build with hwloc
Retrieve hwloc dependencies through pkg-config to avoid the following
static build failure:

checking for hwloc_get_proc_cpubind in -lhwloc... no
configure: error: can not find required library libhwloc

This build failure is raised because without pkg-config, hwloc
dependencies such as libxml2 are not retrieved:

configure:8999: checking for hwloc_get_proc_cpubind in -lhwloc
configure:9022: /home/autobuild/autobuild/instance-0/output-1/host/bin/powerpc-buildroot-linux-uclibc-gcc -o conftest -D_GNU_SOURCE -I/home/autobuild/autobuild/instance-0/output-1/host/powerpc-buildroot-linux-uclibc/sysroot/usr/bin/../../usr/include -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -Og -g0  -static -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -static conftest.c -lhwloc  -llzma -L/home/autobuild/autobuild/instance-0/output-1/host/powerpc-buildroot-linux-uclibc/sysroot/usr/bin/../../usr/lib -lncurses -lm   >&5
/home/autobuild/autobuild/instance-0/output-1/host/lib/gcc/powerpc-buildroot-linux-uclibc/10.3.0/../../../../powerpc-buildroot-linux-uclibc/bin/ld: /home/autobuild/autobuild/instance-0/output-1/host/powerpc-buildroot-linux-uclibc/sysroot/usr/bin/../../usr/lib/libhwloc.a(topology-xml-libxml.o): in function `hwloc_libxml_free_buffer':
topology-xml-libxml.c:(.text+0x6a): undefined reference to `xmlFree'

Fixes:
 - http://autobuild.buildroot.org/results/5d815ec08c580005a863df6ac9ac29deff7d4128

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
2022-04-03 12:59:30 +02:00
Daniel Lange 7039abe109 Guess lxc or docker from /proc/1/mounts
At the moment this is used to make the memory meter report sane values even
if the host has ZFS and that leaks through into a containerized environment

Fixes #863

Includes a clever check for magic PROC_PID_INIT_INO in /proc/self/ns/pid thanks to Pavel Snajdr (snajpa)
2022-04-02 14:02:06 +02:00
Daniel Lange 2b7504b522 Merge branch 'full_meter' of cgzones/htop into main
Closes #786
2022-04-02 12:45:07 +02:00
Daniel Lange 8b927ba596 Merge branch 'main' (Linux: fix crash in LXD, fixes #965) of er-azh/htop into main 2022-04-02 12:38:00 +02:00
Daniel Lange 0ffd772d28 Fix header layout and meters reset if a header column is empty
Closes #880
Patch from BenBE and cgzones
2022-04-02 12:30:30 +02:00
er-azh 64fb7181ee
use xCalloc for allocating cpuData 2022-03-27 12:23:56 +04:30
er-azh ba4c67942c
Linux: allocate cpuData before reading cpu count. 2022-03-26 17:27:36 +04:30
er-azh 3f0c172a60
Linux: fix crash in LXD 2022-03-26 15:48:12 +04:30
Daniel Lange 7c43e02591 Improve String_contains_i to allow for multiple terms
This enables:
* Multiple filters in the main panel and strace etc. views
* Multiple search terms

The search terms are separated by "|" and are still fixed strings
matched case-insensitive.

Added a multi flag at request of BenBE.
2022-03-25 17:19:59 +01:00
Daniel Lange c6f946edd2 Improve MainPanel Label on active inc filter (Filter <-> FILTER) 2022-03-25 14:51:14 +01:00
HeshamTB a2ca7583a9 README: Add Archlinux build dependency install command
Signed-off-by: HeshamTB <hishaminv@gmail.com>
2022-03-24 15:49:13 +01:00
Daniel Lange 469ae7a0bd Make sure License is correctly specified as GNU GPLv2+ in some more file headers 2022-03-14 07:33:40 +01:00
Benny Baumann c4239335b9 Skip system slice name
This shortens paths like /system.slice/system-postgres.slice/postgres@12-main.service to /[S]/postgres@12-main.
Without this some cgroup names for getty processes explode in length.
2022-03-06 19:56:25 +01:00
Benny Baumann 23b56193d7 Reduce column width spam by snapd 2022-03-06 19:56:25 +01:00
Benny Baumann edf319e53d Auto-size (normalized) CPU usage columns 2022-03-06 19:56:25 +01:00
Christian Göttsche b6c0667eae Linux: dynamically adjust column width of CGROUP C(ompressed)CGROUP 2022-03-06 19:56:25 +01:00
Christian Göttsche 3ba695293c Linux: dynamically adjust the SECATTR column width
SELinux contexts can be quite long; adjust the column width dynamically
at each cycle to the longest value.

Also with the recent addition of multiple screens, over-long columns can
be moved into their own screen.
2022-03-06 19:56:25 +01:00
Kumar 6133cac721 Process: Handle rounding ambiguity between 99.9 and 100.0
Depending upon default behavior of the compiler and floating-point
environment, compiler could round down the value between "99.9" and
"100.0" to "99.0", instead of rounding it to the nearest value, "100.0".

Note: The floating-point environment access and modification is only
meaningful when "#pragma STD FENV_ACCESS" is set to "ON"[1]. Otherwise
implementation is free to assume that floating-point control modes are
always the default. So it would be a good idea to address the rounding
ambiguity between "99.9" and "100.0" to become compiler agnostic.

[1]: https://en.cppreference.com/w/c/numeric/fenv

Credits: @Explorer09, thanks for the suggestion.
2022-02-19 12:21:26 +01:00
Kumar da653f8148 Process: Show only integer value when CPU% more than 99.9%
When we run a process which utilizes CPU between 100.0% and 999.9%, htop
shows an unnecessary decimal character at the end of the value. For
example, '100.x' and '247.x' become '100.' and '247.' respectively.

When CPU utilization is less than and equal to '99.9%', show the result
with single digit precision and if result is less than four characters,
pad it with the blank space. When CPU utilization is greater than
'99.9%', show only integral part of the result and if it's less than
four characters, pad it with the blank space.

Closes: #946
2022-02-19 12:21:26 +01:00
Charlie Vieth d35db47c9a darwin: lazily set process TTY name
Fetching the TTY name of a process is extremely expensive on darwin and
the call to devname accounts for 95% of htop's CPU usage when there is
high process turnover (this is mostly due to devname calling lstat,
which is incredibly slow). This can make htop unresponsive.

To mitigate this only set the process TTY name if the it is being
actively displayed (PROCESS_FLAG_TTY), which by default it is not
on darwin.
2022-02-18 09:07:41 +01:00
Denis Lisov 978a7c894f ProcessList_buildTreeBranch: drop extra assert
It essentially only checks Vector_add, and there's already an assert for
that in the vector code.
2022-02-13 19:50:16 +01:00
Denis Lisov 79a6f6cb5b ProcessList_buildTree: skip hashtable if known root
Don't waste time looking up the parent if the current process is already
known to be a root process.
2022-02-13 19:50:16 +01:00