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129 lines
3.1 KiB
C
129 lines
3.1 KiB
C
#include <dirent.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/vfs.h>
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#include <time.h>
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#include <unistd.h>
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#define MAX_MESSAGE_SIZE 1024
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#define INTERVAL 10
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char *string_insert(char *str1, const char *str2, int pos);
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int get_cpu_usage_percentage(void);
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int get_ram_usage_percentage(void);
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void get_formatted_date_time(char *format, char *formattedDateTime);
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double get_available_space_from_mountpoint_gb(const char *mountpoint);
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double get_total_space_from_mountpoint_gb(const char *mountpoint);
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double get_used_space_from_mountpoint_gb(const char *mountpoint);
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int get_number_of_processes(void);
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#ifdef SYSINFO_IMPLEMENTATION
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char *string_insert(char *str1, const char *str2, int pos)
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{
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size_t l1 = strlen(str1);
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size_t l2 = strlen(str2);
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if (pos < 0) pos = 0;
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if (pos > l1) pos = l1;
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char *p = str1 + pos;
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memmove(p + l2, p, l1 - pos);
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memcpy (p, str2, l2);
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return str1;
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}
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int get_cpu_usage_percentage(void)
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{
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int perc;
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long double a[4], b[4];
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FILE *fp;
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fp = fopen("/proc/stat", "r");
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if (fp == NULL) {
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fprintf(stderr, "ERROR: failed to open file /proc/stat");
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return 1;
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}
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fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &a[0], &a[1], &a[2], &a[3]);
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fclose(fp);
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sleep(delay);
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fp = fopen("/proc/stat", "r");
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if (fp == NULL) {
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fprintf(stderr, "ERROR: failed to open file /proc/stat");
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return 1;
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}
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fscanf(fp, "%*s %Lf %Lf %Lf %Lf", &b[0], &b[1], &b[2], &b[3]);
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fclose(fp);
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perc = 100 * ((b[0]+b[1]+b[2]) - (a[0]+a[1]+a[2])) / ((b[0]+b[1]+b[2]+b[3]) - (a[0]+a[1]+a[2]+a[3]));
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return (perc);
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}
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int get_ram_usage_percentage(void)
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{
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long total, free, buffers, cached;
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FILE *fp;
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fp = fopen("/proc/meminfo", "r");
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if (fp == NULL) {
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fprintf(stderr, "ERROR: failed to open file /proc/meminfo");
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return 1;
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}
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fscanf(fp, "MemTotal: %ld kB\n", &total);
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fscanf(fp, "MemFree: %ld kB\n", &free);
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fscanf(fp, "MemAvailable: %ld kB\nBuffers: %ld kB\n", &buffers, &buffers);
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fscanf(fp, "Cached: %ld kB\n", &cached);
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fclose(fp);
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return (100 * ((total - free) - (buffers + cached)) / total);
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}
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void get_formatted_date_time(char *format, char *formattedDateTime)
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{
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time_t rawtime;
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struct tm *timeptr;
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time(&rawtime);
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timeptr = localtime(&rawtime);
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strftime(formattedDateTime, 80, format, timeptr);
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}
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double get_available_space_from_mountpoint_gb(const char *mountpoint)
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{
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struct statfs mountpointStatfs;
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statfs(mountpoint, &mountpointStatfs);
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return ((long double)mountpointStatfs.f_bfree * mountpointStatfs.f_bsize)/1073741824;
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}
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double get_total_space_from_mountpoint_gb(const char *mountpoint)
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{
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struct statfs mountpointStatfs;
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statfs(mountpoint, &mountpointStatfs);
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return ((long double)mountpointStatfs.f_blocks * mountpointStatfs.f_bsize)/1073741824;
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}
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double get_used_space_from_mountpoint_gb(const char *mountpoint)
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{
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struct statfs mountpointStatfs;
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statfs(mountpoint, &mountpointStatfs);
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return (((long double)mountpointStatfs.f_blocks * mountpointStatfs.f_bsize) - ((long double)mountpointStatfs.f_bfree * mountpointStatfs.f_bsize))/1073741824;
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}
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double get_used_space_from_mountpoint_gb(const char *mountpoint)
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{
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return (mountpointUsedGB(mountpoint)/mountpointTotalGB(mountpoint)) * 100;
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}
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#endif
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