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Add new display option to also show CPU frequency in CPU meters.

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The option is only implemented on Linux. On other platforms, and on Linuxes
that do not expose the relevant sysfs file, the frequency will be 0.

The "CPU average" meter does not show a frequency, only
the individual per-CPU meters.
This commit is contained in:
Arnavion
2019-08-09 21:34:48 -07:00
parent 402e46bb82
commit 4b0600d8f8
6 changed files with 43 additions and 3 deletions
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16
linux/Platform.c
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@ -192,6 +192,22 @@ double Platform_setCPUValues(Meter* this, int cpu) {
}
percent = CLAMP(percent, 0.0, 100.0);
if (isnan(percent)) percent = 0.0;
v[CPU_METER_FREQUENCY] = 0;
if (this->pl->settings->showCPUFrequency) {
char filename[63+1];
xSnprintf(filename, 63, "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", cpu - 1);
FILE* fd = fopen(filename, "r");
if (fd) {
unsigned int cpuFrequency;
int n = fscanf(fd, "%u", &cpuFrequency);
fclose(fd);
if (n > 0) {
v[CPU_METER_FREQUENCY] = cpuFrequency;
}
}
}
return percent;
}