80fc20d1d6
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.
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "../util.h"
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#if defined(__linux__)
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const char *
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cpu_freq(void)
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{
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int freq;
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return (pscanf("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq",
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"%i", &freq) == 1) ?
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bprintf("%d", (freq + 500) / 1000) : NULL;
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}
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const char *
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cpu_perc(void)
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{
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static int valid;
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static long double a[7];
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long double b[7];
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memcpy(b, a, sizeof(b));
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/* cpu user nice system idle iowait irq softirq */
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if (pscanf("/proc/stat", "%*s %Lf %Lf %Lf %Lf %Lf %Lf %Lf",
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&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6]) != 7) {
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return NULL;
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}
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if (!valid) {
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valid = 1;
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return NULL;
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}
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return bprintf("%d", (int)(100 *
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((b[0] + b[1] + b[2] + b[5] + b[6]) -
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(a[0] + a[1] + a[2] + a[5] + a[6])) /
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((b[0] + b[1] + b[2] + b[3] + b[4] + b[5] + b[6]) -
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(a[0] + a[1] + a[2] + a[3] + a[4] + a[5] + a[6]))));
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}
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#elif defined(__OpenBSD__)
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#include <sys/param.h>
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#include <sys/sched.h>
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#include <sys/sysctl.h>
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const char *
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cpu_freq(void)
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{
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int freq, mib[2];
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size_t size;
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mib[0] = CTL_HW;
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mib[1] = HW_CPUSPEED;
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size = sizeof(freq);
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if (sysctl(mib, 2, &freq, &size, NULL, 0) < 0) {
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warn("sysctl 'HW_CPUSPEED':");
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return NULL;
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}
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return bprintf("%d", freq);
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}
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const char *
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cpu_perc(void)
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{
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int mib[2];
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static int valid;
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static long int a[CPUSTATES];
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long int b[CPUSTATES];
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size_t size;
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mib[0] = CTL_KERN;
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mib[1] = KERN_CPTIME;
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size = sizeof(a);
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memcpy(b, a, sizeof(b));
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if (sysctl(mib, 2, &a, &size, NULL, 0) < 0) {
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warn("sysctl 'KERN_CPTIME':");
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return NULL;
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}
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if (!valid) {
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valid = 1;
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return NULL;
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}
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return bprintf("%d", 100 *
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((a[CP_USER] + a[CP_NICE] + a[CP_SYS] + a[CP_INTR]) -
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(b[CP_USER] + b[CP_NICE] + b[CP_SYS] + b[CP_INTR])) /
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((a[CP_USER] + a[CP_NICE] + a[CP_SYS] + a[CP_INTR] +
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a[CP_IDLE]) -
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(b[CP_USER] + b[CP_NICE] + b[CP_SYS] + b[CP_INTR] +
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b[CP_IDLE])));
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}
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#endif
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