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Thanks to the FRIGN
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Remove unnecessary cast to size_t
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- Remove <errno.h> because related functions are in util.c now
- Remove corresponding <string.h> if not used otherwise
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Now only one function, fmt_human, takes an additional argument "base".
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This is a first step to decouple formatting from information because of
two reasons:
1. The components should only gather and return the values by design
2. Fine grained user control should be a focus
Scaling will be implemented in a different way in a later commit.
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Units should be added to the corresponding numbers
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Given slstatus is a tool that runs in the background, most likely run
from .xinitrc, it's important to prepend the name of the tool to error
messages so it becomes clear where the error is coming from.
To make this much more consistent, this commit adds warn() and die()
utility functions consistent with other suckless projects and adapts all
calls to fprintf(stderr, *) to the warn() and die() functions, greatly
increasing the readability of the code.
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- 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
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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.
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In OpenBSD the CPU usage in percent is now computed using KERN_CPTIME
sysctl.
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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.
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this reverts the commits from 92ab9ef52ebcb097add97d9f78e67ad1c1d6a6ec up to
d42870d6ca7fb587b38f8cf6d6821ae33a53a696.
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.
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In OpenBSD CPU frequency gets fetched using sysctl now.
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Replace #ifdef with #if defined() and #elif with #elif defined() as it
should only test if it is defined or not.
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This brings us a lot more tidiness.
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