Querying kernel threads with `ps -o pid,lid,flags,state,lname -sp 0`
gives that kernel threads have state `K` and flags have mask `0x20000` set.
This corresponds to `LW_SYSTEM` in kernel which is mapped as `L_SYSTEM`/`P_SYSTEM` for userspace.
Update merged command-line when started with "Show custom thread names"
disabled and enabling at runtime.
Also only consider showThreadNames when working on userland threads.
Implements support for arbitrary Performance Co-Pilot
metrics with per-process instance domains to form new
htop columns. The column-to-metric mappings are setup
using configuration files which will be documented via
man pages as part of a follow-up commit.
We provide an initial set of column configurations so
as to provide new capabilities to pcp-htop: including
configs for containers, open fd counts, scheduler run
queue time, tcp/udp bytes/calls sent/recv, delay acct,
virtual machine guests, detailed virtual memory, swap.
Note there is a change to the configuration file path
resolution algorithm introduced for 'dynamic meters'.
First, look in any custom PCP_HTOP_DIR location. Then
iterate, in priority order, users home directory, then
local sysadmins files in /etc/pcp/htop, then readonly
configuration files below /usr/share/pcp/htop. This
final location becomes the preferred place for our own
shipped meter and column files.
The Settings file (htoprc) writing code is updated to
not using the numeric identifier for dynamic columns.
The same strategy used for dynamic meters is used here
where we write Dynamic(name) so the name can be setup
once more at start. Regular (static) columns writing
to htoprc - i.e. numerically indexed - is unchanged.
Adds AGRP (autogroup) and ANI (autogroup nice) columns that
report the information from /proc/PID/autogroup, as well as
handlers for '{' and '}' to change the autogroup nice value.
This is guarded by /proc/sys/kernel/sched_autogroup_enabled
such that sampling and/or changing values wont be attempted
unless the kernel feature is enabled.
Fixes: #720
Compilers might due to optimizations, like -ffast-math (included in
-Ofast) expect floating point variables to be never NaN and replace each
call to isnan() with false. Htop uses the value NaN for signaling no
data available for various information.
Warn at configure time if the compiler will ignore NaN values.
Note: this can not be implemented as a compile time static assert, as
some compilers handle compile NaNs differently than runtime NaNs.
This uses proplib and sysmon_envsys to determine the total charge
percentage of any number of connected batteries as well as the
AC adapter state. Should work with ACPI and non-ACPI systems.
Add some words about pcp-htop to the main man page, and add a
new man page describing the pcp-htop configuration files that
allow new meters and columns to be defined at runtime.
Default settings are used as a base and only settings specified in `htoprc` are
applied on top of it. This patch removes the special case for applying some
defaults when the config does not contain a `meters` key. All defauls are set
before any attempt to read settings, so only keys actually present in the config
file are overridden.
This makes the behaviour consistent with other platforms where AC is
marked as present if at least one power source is marked as AC_PRESENT.
Fixes: #711
Benny Baumann