![Laslo Hunhold](/assets/img/avatar_default.png)
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.
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "../util.h"
|
|
|
|
#if defined(__linux__)
|
|
const char *
|
|
cpu_freq(void)
|
|
{
|
|
int freq;
|
|
|
|
return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
|
|
"%i", &freq) == 1) ?
|
|
bprintf("%d", (freq + 500) / 1000) : NULL;
|
|
}
|
|
|
|
const char *
|
|
cpu_perc(void)
|
|
{
|
|
int perc;
|
|
static long double a[7];
|
|
static int valid;
|
|
long double b[7];
|
|
|
|
memcpy(b, a, sizeof(b));
|
|
if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf",
|
|
&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6]) != 7) {
|
|
return NULL;
|
|
}
|
|
if (!valid) {
|
|
valid = 1;
|
|
return NULL;
|
|
}
|
|
|
|
perc = 100 *
|
|
((b[0]+b[1]+b[2]+b[5]+b[6]) -
|
|
(a[0]+a[1]+a[2]+a[5]+a[6])) /
|
|
((b[0]+b[1]+b[2]+b[3]+b[4]+b[5]+b[6]) -
|
|
(a[0]+a[1]+a[2]+a[3]+a[4]+a[5]+a[6]));
|
|
|
|
return bprintf("%d", perc);
|
|
}
|
|
|
|
const char *
|
|
cpu_iowait(void)
|
|
{
|
|
int perc;
|
|
static int valid;
|
|
static long double a[7];
|
|
long double b[7];
|
|
|
|
memcpy(b, a, sizeof(b));
|
|
if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf",
|
|
&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6]) != 7) {
|
|
return NULL;
|
|
}
|
|
if (!valid) {
|
|
valid = 1;
|
|
return NULL;
|
|
}
|
|
|
|
perc = 100 * ((b[4]) - (a[4])) /
|
|
((b[0]+b[1]+b[2]+b[3]+b[4]+b[5]+b[6]) -
|
|
(a[0]+a[1]+a[2]+a[3]+a[4]+a[5]+a[6]));
|
|
|
|
return bprintf("%d", perc);
|
|
}
|
|
#elif defined(__OpenBSD__)
|
|
#include <sys/sysctl.h>
|
|
|
|
const char *
|
|
cpu_freq(void)
|
|
{
|
|
int freq, mib[2];
|
|
size_t size;
|
|
|
|
mib[0] = CTL_HW;
|
|
mib[1] = HW_CPUSPEED;
|
|
|
|
size = sizeof(freq);
|
|
|
|
if (sysctl(mib, 2, &freq, &size, NULL, 0) == -1) {
|
|
fprintf(stderr, "sysctl 'HW_CPUSPEED': %s\n",
|
|
strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
return bprintf("%d", freq);
|
|
}
|
|
#endif
|