components/cpu.c
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/* See LICENSE file for copyright and license details. */ #if defined(__linux__) #include <stdio.h> #include <string.h> #include "../util.h" 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); } #endif