components/ram.c

   1 /* See LICENSE file for copyright and license details. */
   2 #if defined(__linux__)
   3 #include <stdio.h>
   4
   5 #include "../util.h"
   6
   7 const char *
   8 ram_free(void)
   9 {
  10         long free;
  11
  12         return (pscanf("/proc/meminfo", "MemFree: %ld kB\n", &free) == 1) ?
  13                bprintf("%f", (float)free / 1024 / 1024) : NULL;
  14 }
  15
  16 const char *
  17 ram_perc(void)
  18 {
  19         long total, free, buffers, cached;
  20
  21         return (pscanf("/proc/meminfo",
  22                        "MemTotal: %ld kB\n"
  23                        "MemFree: %ld kB\n"
  24                        "MemAvailable: %ld kB\nBuffers: %ld kB\n"
  25                        "Cached: %ld kB\n",
  26                        &total, &free, &buffers, &buffers, &cached) == 5) ?
  27                bprintf("%d", 100 * ((total - free) - (buffers + cached)) / total) :
  28                NULL;
  29 }
  30
  31 const char *
  32 ram_total(void)
  33 {
  34         long total;
  35
  36         return (pscanf("/proc/meminfo", "MemTotal: %ld kB\n", &total) == 1) ?
  37                bprintf("%f", (float)total / 1024 / 1024) : NULL;
  38 }
  39
  40 const char *
  41 ram_used(void)
  42 {
  43         long total, free, buffers, cached;
  44
  45         return (pscanf("/proc/meminfo",
  46                        "MemTotal: %ld kB\n"
  47                        "MemFree: %ld kB\n"
  48                        "MemAvailable: %ld kB\nBuffers: %ld kB\n"
  49                        "Cached: %ld kB\n",
  50                        &total, &free, &buffers, &buffers, &cached) == 5) ?
  51                bprintf("%f", (float)(total - free - buffers - cached) / 1024 / 1024) :
  52                NULL;
  53 }
  54 #endif