Commit graph

12 commits

Author SHA1 Message Date
Aaron Marcher
b3330d849d cpu: Simplify functions 2018-05-07 11:39:59 +02:00
Aaron Marcher
ee5ec75621 Fix coding style
- Use block for single statement ifs
- Keep lines to reasonable length (current debate as to reasonable)
- When functions return -1 for error test against 0 not -1
- Do not indent cases another level
- Do not test against NULL and 0 explicitly
- Use tabs for indentation, use spaces for alignment
2018-05-06 22:28:56 +02:00
Aaron Marcher
66a7fb16fc Remove cpu_iowait
The third value from load_avg (idle) gives us almost the same
information as cpu_iowait. Plus OpenBSD does not offer an iowait value
as Linux and thus the corresponding function would not be portable.
2018-05-06 21:11:50 +02:00
Aaron Marcher
235fa3c306 cpu_perc: Documentation and readbility improvements 2018-05-06 21:10:02 +02:00
Aaron Marcher
2b82bf0248 cpu_perc: Port to OpenBSD
In OpenBSD the CPU usage in percent is now computed using KERN_CPTIME
sysctl.
2018-05-06 17:48:37 +02:00
Laslo Hunhold
9750a3d731 Use indentation to increase readability
Granted, this style is definitely not common, but for the short
utility-functions of this program it's just the right choice. This
provides great flexibility, such that in the long run, it will be
possible to also share code between the OS-implementations.

This also keeps the state-keeping at a minimum and makes it clearer
which functions are implemented on which OS without having to jiggle
around with too many files in the process.
2018-05-01 19:43:49 +02:00
Laslo Hunhold
42edfea89a Revert component-split
this reverts the commits from 92ab9ef52e up to
d42870d6ca.

After heavy consideration, the component split has more disadvantages
than advantages, especially given there will be utility-functions
sharing quite a lot of code that would then need to be duplicated, as it
does not fit into the util.c due to its speciality.

One big advantage of the component-wise build is readability, and
without doubt, this was achieved here. This point will be addressed
with a different approach that will be visible in the upcoming commits.

One big disadvantage of the component build is the fact that it
introduces state to the build process which is not necessary. Before its
introduction, the only influencing factors where the system-defines
__linux__ and __OpenBSD__. With the components, we are also relying on
the output of uname(1).
Additionally, if the os.mk is not present, make gives the output

     $ make
     Makefile:5: os.mk: No such file or directory
     make: *** No rule to make target 'os.mk'.  Stop.

This could easily be fixed by providing some sort of meta-rule for this
file, however, it indicates the problem we have here, and this entire
statefulness will heavily complicate packaging of this tool and makes
the build process much more complex than it actually has to be.
2018-05-01 19:43:34 +02:00
Quentin Rameau
f088dbfea0 cpu: OS split 2018-04-30 15:41:09 +02:00
Aaron Marcher
3fe1db8892 cpu_freq: Port to OpenBSD
In OpenBSD CPU frequency gets fetched using sysctl now.
2018-04-30 13:20:24 +02:00
Aaron Marcher
e79d4932ea More robust preprocessor switches
Replace #ifdef with #if defined() and #elif with #elif defined() as it
should only test if it is defined or not.
2018-03-21 12:21:37 +01:00
Aaron Marcher
ebf5a35052 Build Linux-only functions only on Linux 2018-03-18 23:26:13 +01:00
Laslo Hunhold
7246dc4381
Move components into dedicated subdirectory
This brings us a lot more tidiness.
2017-09-24 17:20:27 +02:00
Renamed from cpu.c (Browse further)