mirror of
https://github.com/fastfetch-cli/fastfetch.git
synced 2026-09-13 02:42:09 +02:00
Linus Dierheimer
50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
#include "fastfetch.h"
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#include <stdio.h>
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#include <unistd.h>
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#define FF_CPU_USAGE_MODULE_NAME "CPU Usage"
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#define FF_CPU_USAGE_NUM_FORMAT_ARGS 1
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void ffPrintCPUUsage(FFinstance* instance)
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{
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long user, nice, system, idle, iowait, irq, softirq;
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FILE* procStat = fopen(FASTFETCH_TARGET_DIR_ROOT"/proc/stat", "r");
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if(procStat == NULL)
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{
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ffPrintError(instance, FF_CPU_USAGE_MODULE_NAME, 0, &instance->config.cpuUsageKey, &instance->config.cpuUsageFormat, FF_CPU_USAGE_NUM_FORMAT_ARGS, "fopen(\""FASTFETCH_TARGET_DIR_ROOT"/proc/stat\", \"r\") == NULL");
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return;
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}
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if (fscanf(procStat, "cpu%ld%ld%ld%ld%ld%ld%ld", &user, &nice, &system, &idle, &iowait, &irq, &softirq) < 0) goto exit;
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long workJiffies1 = user + nice + system;
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long totalJiffies1 = workJiffies1 + idle + iowait + irq + softirq;
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sleep(1);
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rewind(procStat);
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if (fscanf(procStat, "cpu%ld%ld%ld%ld%ld%ld%ld", &user, &nice, &system, &idle, &iowait, &irq, &softirq) < 0) goto exit;
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long workJiffies2 = user + nice + system;
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long totalJiffies2 = workJiffies2 + idle + iowait + irq + softirq;
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// https://stackoverflow.com/questions/3017162/how-to-get-total-cpu-usage-in-linux-using-c#answer-3017438
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long workOverPeriod = workJiffies2 - workJiffies1;
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long totalOverPeriod = totalJiffies2 - totalJiffies1;
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double cpuPercent = (double)workOverPeriod / (double)totalOverPeriod * 100;
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if(instance->config.cpuUsageFormat.length == 0)
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{
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ffPrintLogoAndKey(instance, FF_CPU_USAGE_MODULE_NAME, 0, &instance->config.cpuUsageKey);
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printf("%.2lf%%\n", cpuPercent);
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}
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else
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{
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ffPrintFormatString(instance, FF_CPU_USAGE_MODULE_NAME, 0, &instance->config.cpuUsageKey, &instance->config.cpuUsageFormat, NULL, FF_CPU_USAGE_NUM_FORMAT_ARGS, (FFformatarg[]){
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{FF_FORMAT_ARG_TYPE_DOUBLE, &cpuPercent}
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});
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}
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exit:
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fclose(procStat);
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}
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