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htop - an interactive process viewer
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Christian Göttsche ad3acfc847 Handle Panel_getSelected() returning NULL 
Found by compiling with LTO:

    ColumnsPanel.c: In function ‘ColumnsPanel_eventHandler’:
    ColumnsPanel.c:46:59: error: potential null pointer dereference [-Werror=null-dereference]
       46 |             ((ListItem*)Panel_getSelected(super))->moving = this->moving;
          |                                                           ^
    AvailableColumnsPanel.c: In function ‘AvailableColumnsPanel_eventHandler’:
    AvailableColumnsPanel.c:31:8: error: potential null pointer dereference [-Werror=null-dereference]
       31 |    int key = ((ListItem*) Panel_getSelected(super))->key;
          |        ^
    AvailableMetersPanel.c: In function ‘AvailableMetersPanel_eventHandler’:
    AvailableMetersPanel.c:40:24: error: potential null pointer dereference [-Werror=null-dereference]
       40 |    int param = selected->key & 0xff;
          |                        ^
    linux/IOPriorityPanel.c: In function ‘IOPriorityPanel_getIOPriority’:
    linux/IOPriorityPanel.c:37:11: error: potential null pointer dereference [-Werror=null-dereference]
       37 |    return (IOPriority) ( ((ListItem*) Panel_getSelected(this))->key );
          |           ^
2020-10-06 11:17:23 +02:00
.github/workflows Add clang analyzer CI job 2020-10-03 19:04:27 +02:00
darwin Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
dragonflybsd Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
freebsd Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
linux Handle Panel_getSelected() returning NULL 2020-10-06 11:17:23 +02:00
openbsd Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
scripts Add script to run htop under valgrind 2020-09-17 22:06:36 +02:00
solaris Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
unsupported Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
zfs Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
.editorconfig Add trim_trailing_whitespace to editorconfig 2019-10-31 11:39:57 -05:00
.gitignore Axe automated header generation. 2020-09-03 11:58:58 -05:00
.travis.yml Fail travis CI on compiler warnings 2020-09-18 12:28:40 +02:00
Action.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Action.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Affinity.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Affinity.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
AffinityPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
AffinityPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
AUTHORS Initial import. 2006-03-04 18:16:49 +00:00
autogen.sh autotools: enable warnings and cleanup 2020-09-17 21:45:11 +02:00
AvailableColumnsPanel.c Handle Panel_getSelected() returning NULL 2020-10-06 11:17:23 +02:00
AvailableColumnsPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
AvailableMetersPanel.c Handle Panel_getSelected() returning NULL 2020-10-06 11:17:23 +02:00
AvailableMetersPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
BatteryMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
BatteryMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CategoriesPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CategoriesPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ChangeLog Bump version, changelog for minor htop-3.0.2 release 2020-09-15 09:43:36 +10:00
CheckItem.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CheckItem.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ClockMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ClockMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ColorsPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ColorsPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ColumnsPanel.c Handle Panel_getSelected() returning NULL 2020-10-06 11:17:23 +02:00
ColumnsPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CommandScreen.c limit max screen title length to window width 2020-10-05 12:18:05 +02:00
CommandScreen.h show selected command wrapped in a separate window 2020-09-24 19:22:25 +02:00
configure.ac Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
CONTRIBUTING.md Updates to project URLs in docs and embedded in source code 2020-08-22 15:47:11 +10:00
COPYING Remove trailing whitespaces 2020-08-21 10:37:33 +02:00
CPUMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CPUMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
CRT.c Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
CRT.h Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
DateMeter.c DateMeter followup 2020-10-05 13:59:05 +02:00
DateMeter.h DateMeter followup 2020-10-05 13:59:05 +02:00
DateTimeMeter.c DateMeter followup 2020-10-05 13:59:05 +02:00
DateTimeMeter.h DateMeter followup 2020-10-05 13:59:05 +02:00
DiskIOMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
DiskIOMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
DisplayOptionsPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
DisplayOptionsPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
EnvScreen.c Consolidate repeated macro definitions into one header 2020-09-09 16:56:04 +10:00
EnvScreen.h Remove superfluous 'extern's from function declarations. 2020-09-03 11:59:26 -05:00
FunctionBar.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
FunctionBar.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Hashtable.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Hashtable.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Header.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Header.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
HostnameMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
HostnameMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
htop.1.in show selected command wrapped in a separate window 2020-09-24 19:22:25 +02:00
htop.c Add Copyright statement to --help (needed as it has the license info) 2020-10-05 12:31:24 +02:00
htop.desktop Add danish translation to htop.desktop 2019-02-19 01:25:52 +01:00
htop.png Updated icon! 2014-04-09 14:47:58 -03:00
IncSet.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
IncSet.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
InfoScreen.c limit max screen title length to window width 2020-10-05 12:18:05 +02:00
InfoScreen.h Sort headers/includes 2020-09-29 17:41:49 +02:00
ListItem.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ListItem.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
LoadAverageMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
LoadAverageMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Macros.h Assert that low value is lower than the high value in CLAMP 2020-10-05 12:47:56 +02:00
MainPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
MainPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Makefile.am Add a date and datetime meter (#159) 2020-10-05 13:52:58 +02:00
MemoryMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
MemoryMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Meter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Meter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
MetersPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
MetersPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
NEWS Remove trailing whitespaces 2020-08-21 10:37:33 +02:00
Object.c Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
Object.h Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
OpenFilesScreen.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
OpenFilesScreen.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Panel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Panel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Process.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Process.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ProcessList.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ProcessList.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
README Update creation date to 2004 (thanks rubyFeedback) 2020-09-17 09:47:28 +02:00
README.md Add README.md for Github 2014-02-03 09:11:39 -02:00
RichString.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
RichString.h Merge branch 'update-license-and-copyright-info' 2020-10-06 10:27:38 +11:00
ScreenManager.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
ScreenManager.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Settings.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Settings.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
SignalsPanel.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
SignalsPanel.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
StringUtils.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
StringUtils.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
SwapMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
SwapMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
TasksMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
TasksMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
test_spec.lua Remove trailing whitespaces 2020-08-21 10:37:33 +02:00
TESTPLAN Remove trailing whitespaces 2020-08-21 10:37:33 +02:00
TraceScreen.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
TraceScreen.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
UptimeMeter.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
UptimeMeter.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
UsersTable.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
UsersTable.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Vector.c Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Vector.h Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
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XAlloc.h Sort headers/includes 2020-09-29 17:41:49 +02:00

README.md

htop

CI Coverity Scan Build Status Mailing List IRC #htop Github Release Download

Introduction

htop is a cross-platform interactive process viewer.

htop allows scrolling the list of processes vertically and horizontally to see their full command lines and related information like memory and CPU consumption.

The information displayed is configurable through a graphical setup and can be sorted and filtered interactively.

Tasks related to processes (e.g. killing and renicing) can be done without entering their PIDs.

Running htop requires ncurses libraries (typically named libncursesw*).

For more information and details on how to contribute to htop visit htop.dev.

Build instructions

This program is distributed as a standard GNU autotools-based package.

Compiling htop requires the header files for ncurses (libncursesw*-dev). Install these and other required packages for C development from your package manager.

Then, when compiling from a release tarball, run:

./configure && make

Alternatively, for compiling sources downloaded from the Git repository (git clone or downloads from Github releases), install the header files for ncurses (libncursesw*-dev) and other required development packages from your distribution's package manager. Then run:

./autogen.sh && ./configure && make

By default make install will install into /usr/local, for changing the path use ./configure --prefix=/some/path.

See the manual page (man htop) or the on-line help ('F1' or 'h' inside htop) for a list of supported key commands.

Support

If you have trouble running htop please consult your Operating System / Linux distribution documentation for getting support and filing bugs.

Bugs, development feedback

We have a development mailing list. Feel free to subscribe for release announcements or asking questions on the development of htop.

You can also join our IRC channel #htop on freenode and talk to the developers there.

If you have found an issue with the source of htop, please check whether this has already been reported in our Github issue tracker. If not, please file a new issue describing the problem you have found, the location in the source code you are referring to and a possible fix.

History

htop was invented, developed and maintained by Hisham Muhammad from 2004 to 2019. His legacy repository has been archived to preserve the history.

In 2020 a team took over the development amicably and continues to maintain htop collaboratively.

License

GNU General Public License, version 2 (GPL-2.0)