Commit Graph

41 Commits

Author SHA1 Message Date
Christian Göttsche 41af31be7f Rework CPU counting
Currently htop does not support offline CPUs and hot-swapping, e.g. via
    echo 0 > /sys/devices/system/cpu/cpu2/online

Split the current single cpuCount variable into activeCPUs and
existingCPUs.

Supersedes: #650
Related: #580
2021-07-18 07:44:02 +02:00
Benny Baumann 976c6123f4 Pointer indication aligned to typename 2021-07-15 06:57:24 +02:00
Benny Baumann e7f8d7bcc9 Split statements that should go onto multiple lines 2021-07-15 06:57:24 +02:00
Nathan Scott f0ed0fdafb Add a new DynamicMeter class for runtime Meter extension
This commit is based on exploratory work by Sohaib Mohamed.
The end goal is two-fold - to support addition of Meters we
build via configuration files for both the PCP platform and
for scripts ( https://github.com/htop-dev/htop/issues/526 )

Here, we focus on generic code and the PCP support.  A new
class DynamicMeter is introduced - it uses the special case
'param' field handling that previously was used only by the
CPUMeter, such that every runtime-configured Meter is given
a unique identifier.  Unlike with the CPUMeter this is used
internally only.  When reading/writing to htoprc instead of
CPU(N) - where N is an integer param (CPU number) - we use
the string name for each meter.  For example, if we have a
configuration for a DynamicMeter for some Redis metrics, we
might read and write "Dynamic(redis)".  This identifier is
subsequently matched (back) up to the configuration file so
we're able to re-create arbitrary user configurations.

The PCP platform configuration file format is fairly simple.
We expand configs from several directories, including the
users homedir alongside htoprc (below htop/meters/) and also
/etc/pcp/htop/meters.  The format will be described via a
new pcp-htop(5) man page, but its basically ini-style and
each Meter has one or more metric expressions associated, as
well as specifications for labels, color and so on via a dot
separated notation for individual metrics within the Meter.

A few initial sample configuration files are provided below
./pcp/meters that give the general idea.  The PCP "derived"
metric specification - see pmRegisterDerived(3) - is used
as the syntax for specifying metrics in PCP DynamicMeters.
2021-07-07 10:59:36 +10:00
Nathan Scott a0f758009b Fix bitmask used to extract CPU identifier for CPUMeter
When manipulating CPUMeters in the AvailableMeterPanel we
use the bottom 16 bits to hold the CPU number.  However,
the bitmask used to extract the CPU number only masks the
lower 8 bits (0xff).
2021-07-07 10:59:36 +10:00
Christian Göttsche a11d01568c Use unsigned types for CPU counts and associated variables 2021-03-19 23:30:54 +01:00
Christian Göttsche b862e36ee7 Separate data-update and drawing of header 2021-03-04 23:57:45 +01:00
Christian Göttsche 2b62126aea Mark several non-modified pointer variables const 2021-01-11 23:47:00 +01:00
Christian Göttsche d72b0a682e Mark several non-modified pointer variables const 2021-01-11 20:12:34 +01:00
Christian Göttsche e3862aa67e Rework drawing of FunctionBar
Draw the FunctionBar within Panel_draw instead of manually throughout
the code.
Add an optional PanelClass function drawFunctionBar, to allow specific
panels to override the default FunctionBar_draw call.
Rework the code on color change, to really change all colors (selection
markers and panel headers).

Closes: #402
2020-12-20 17:01:50 +01:00
Christian Göttsche ea4f33409a Update even more snprintfs
Use size of actual buffers instead of magic numbers
2020-11-28 19:33:07 +01:00
Benny Baumann 0f5262917f Make all required includes explicit
Information as seen by IWYU 0.12 + clang 9 on Linux
2020-10-18 20:09:05 +02:00
Benny Baumann 872e542f4e Rename StringUtils.[ch] to XUtils.[ch] 2020-10-16 20:30:21 +02:00
Benny Baumann c6f04a9c5d Move xAsprintf, xSnprintf and xStrdup to StringUtils.h 2020-10-16 20:29:45 +02:00
Christian Göttsche b47bc667a2 Add key to pause process list updates 2020-10-12 13:04:00 +02:00
Christian Göttsche ba282cfe19 Mark Object instances const 2020-10-07 13:01:53 +02:00
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
Daniel Lange 079c2abf8e Update License consistently to GPLv2 as per COPYING file 2020-10-05 10:13:12 +02:00
Christian Göttsche 843949131a Drop redundant casts to the same type 2020-09-29 10:44:42 +02:00
Zev Weiss a1a027b9bd Axe automated header generation.
Reasoning:
 - implementation was unsound -- broke down when I added a fairly
   basic macro definition expanding to a struct initializer in a *.c
   file.

 - made it way too easy (e.g. via otherwise totally innocuous git
   commands) to end up with timestamps such that it always ran
   MakeHeader.py but never used its output, leading to overbuild noise
   when running what should be a null 'make'.

 - but mostly: it's just an awkward way of dealing with C code.
2020-09-03 11:58:58 -05:00
Nathan Scott a82fd262d7 Merge branch 'hishamhm-pull-960' 2020-08-20 14:19:53 +10:00
Daniel Flanagan dd33444f7e Clean up existing whitespace 2019-10-31 11:39:12 -05:00
Ricardo Nabinger Sanchez 6194c8dcc6 Honour setting of counting CPUs from 0/1 when presenting meters
In the listing of Available Meters for CPUs, the list of CPUs is always
presented by counting them from one.  However, if the user prefers to
count CPUs from zero, this is sometimes confusing when fine-tuning the
meters.
2019-02-07 10:39:08 -02:00
Hisham Muhammad 09e241fb12 Security review: check results of snprintf.
Calls marked with xSnprintf shouldn't fail.
Abort program cleanly if any of them does.
2017-07-27 16:07:50 -03:00
Explorer09 328de35623 Assert (Platform_meterTypes[0]==&CPUMeter_class)
Just assume Platform_meterTypes[0] is always &CPUMeter_class for every
platform. This removes a conditional in AvailableMetersPanel_new().

Also adds some comments about the logic here. Without assuming
Platform_meterTypes[0], the (int i=1) clause in this for loop will not
make sense. (I.e. Why not (int i=0)? )

Also replaced a sprintf() call with safer snprintf() in code further
below.
2016-03-19 15:01:13 +08:00
Hisham Muhammad 6082db2121 Improve feedback when moving meters. 2015-08-27 19:14:13 -03:00
Hisham Muhammad 7cb8cb05fb Simplify constructors. 2015-03-23 19:24:34 -03:00
Hisham Muhammad d0c72c3fb2 Move FunctionBar inside Panel 2015-03-23 15:26:56 -03:00
Hisham Muhammad 9ff5d2b243 Fix saving of header states, motion in Setup screen. 2015-03-16 23:01:21 -03:00
Hisham Muhammad d7c843c23b Complete cursor-based movement of headers. 2015-02-03 22:32:07 +01:00
Hisham Muhammad 14bd77c5f4 Add longer descriptions to available meters. 2015-02-03 22:31:44 +01:00
Hisham Muhammad 3383d8e556 Sorry about the mega-patch.
This is a work-in-progress, code is currently broken.
(Some actions, and notably, the header, are missing.)
2015-01-21 23:27:31 -02:00
Hisham Muhammad 357e7a3243 Move UptimeMeter into platform-dependent area.
Set up environment to move other meters.
2014-11-27 19:18:14 -02:00
Hisham Muhammad 00b324bfc1 Changes in object model: separate class objects to store vtable. Also, nicer UTF-8 display of big numbers. 2012-12-05 15:12:20 +00:00
Hisham Muhammad 45f7a4fc8d Remove old memory debugging routines. We have Valgrind nowadays. 2011-12-26 22:04:29 +00:00
Hisham Muhammad 84281bdc44 major header cleanup 2011-12-26 21:35:57 +00:00
Hisham Muhammad 6486229308 add support for steal/guest CPU time measurement
simplify processor data accounting (add CPUData structure)
remove Process_clone trick
2010-08-24 23:20:38 +00:00
Hisham Muhammad da23c8c5a1 Clean up headers by using 'static' whenever possible.
Reduces resulting code size.
2008-03-09 08:58:38 +00:00
Hisham Muhammad 2f1f82ee87 Updates for new version of the MakeHeader.py script. 2006-06-06 20:41:01 +00:00
Hisham Muhammad ea855aef73 Remove references to ListBox 2006-05-30 14:00:18 +00:00
Hisham Muhammad 73de9f1ed4 Rename ListBox'es to Panel's, matching dit. 2006-05-30 13:52:12 +00:00