git.sur5r.net Git - i3/i3status/blob - src/print_load.c

   1 // vim:ts=8:expandtab
   2 #include "i3status.h"
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <yajl/yajl_gen.h>
   7 #include <yajl/yajl_version.h>
   8
   9 void print_load(yajl_gen json_gen, char *buffer, const char *format) {
  10         char *outwalk = buffer;
  11         /* Get load */
  12
  13 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(linux) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined(sun)
  14         double loadavg[3];
  15         const char *walk;
  16
  17         if (getloadavg(loadavg, 3) == -1)
  18                 goto error;
  19
  20         for (walk = format; *walk != '\0'; walk++) {
  21                 if (*walk != '%') {
  22                         *(outwalk++) = *walk;
  23                         continue;
  24                 }
  25
  26                 if (BEGINS_WITH(walk+1, "1min")) {
  27                         outwalk += sprintf(outwalk, "%1.2f", loadavg[0]);
  28                         walk += strlen("1min");
  29                 }
  30
  31                 if (BEGINS_WITH(walk+1, "5min")) {
  32                         outwalk += sprintf(outwalk, "%1.2f", loadavg[1]);
  33                         walk += strlen("5min");
  34                 }
  35
  36                 if (BEGINS_WITH(walk+1, "15min")) {
  37                         outwalk += sprintf(outwalk, "%1.2f", loadavg[2]);
  38                         walk += strlen("15min");
  39                 }
  40         }
  41
  42         *outwalk = '\0';
  43         OUTPUT_FULL_TEXT(buffer);
  44
  45         return;
  46 error:
  47 #endif
  48         OUTPUT_FULL_TEXT("cant read load");
  49         (void)fputs("i3status: Cannot read system load using getloadavg()\n", stderr);
  50 }