#include "memUtil.h"

void get_mem_usage(int mem_total, char buf[PANE_BUF], int *mem_usages, int i) {
  ///_|> descry: return total mem usage
  ///_|> mem_total: total memory for use in calculations
  ///_|> buf: buffer to write pane to
  ///_|> mem_usages: data array
  ///_|> i: current datapoint in data array
  ///_|> returning: void

  // Usage = total - unused
  int mem_usage =
      (int)min(mem_total, mem_total - get_file_line_value("/proc/meminfo", 2));
  mem_usages[i] = (int)min((int)ceil(10.0 * mem_usage / mem_total), 10);

  draw_mem_title(buf, (float)mem_usage / 1e6, (float)mem_total / 1e6);
  draw_graph(buf, mem_usages, i);
}