fwp/mngr/gui.c

   1 #include "gui.h"
   2 #include "fwp_foreach.h"
   3 #include <ncurses.h>
   4 #include <fwp_contract.h>
   5 #include "fwp_admctrl.h"
   6
   7 void gui_init(void)
   8 {
   9         initscr();
  10         cbreak();
  11         noecho();
  12 }
  13
  14 static char *num_with_unit(char *buf, unsigned num, const char *units[])
  15 {
  16         const int div[] = {100,10,1};
  17         unsigned order = 0;
  18         int d;
  19
  20         while (num > 999 && units[(order+3)/3] != NULL) {
  21                 num /= 10;
  22                 order++;
  23         }
  24
  25         d = div[(order+2)%3];
  26         if (d == 1)
  27                 sprintf(buf, "%4d %s", num, units[(order+2)/3]);
  28         else
  29                 sprintf(buf, "%d.%.*d %s", num/d, (d==10) ? 1 : 2, num%d, units[(order+2)/3]);
  30         return buf;
  31 }
  32
  33 char *bandwidth_to_text(char *buf, unsigned bandwidth_bps)
  34 {
  35         const char *unit[] = {"bps", "kbps", "Mbps", NULL};
  36         return num_with_unit(buf, bandwidth_bps, unit);
  37 }
  38
  39 char *usec_to_text(char *buf, unsigned usec)
  40 {
  41         const char *unit[] = {"us", "ms", "s", NULL};
  42         return num_with_unit(buf, usec, unit);
  43 }
  44
  45 #define addfield(width, title, format, ...)                             \
  46         move(y, x);                                                     \
  47         x+=width;                                                       \
  48         if (cd == NULL) addstr(title);                                  \
  49         else {                                                          \
  50                 snprintf(str, sizeof(str), format, __VA_ARGS__);        \
  51                 addstr(str);                                            \
  52         }
  53
  54 static void print_contract(int y, fwp_contract_data_t *cd)
  55 {
  56         const char *ac_ids[] = { [FWP_AC_VO]="VO", [FWP_AC_VI]="VI", [FWP_AC_BE]="BE", [FWP_AC_BK]="BK" };
  57         struct fwp_contract *c = &cd->contract;
  58         char str[200], s1[20];
  59         int x = 0;
  60
  61         addfield(4,  "ID", "%d", cd->id);
  62         addfield(11, "BW", "%s", bandwidth_to_text(s1, (long long)1000*1000*8*c->budget/c->period_usec));
  63         addfield(11, "Budget", "%d bytes", c->budget);
  64         addfield(11, "Period", "%s", usec_to_text(s1, c->period_usec));
  65         addfield(11, "Deadline", "%s", usec_to_text(s1, c->deadline_usec));
  66         addfield(3,  "AC", "%s", ac_ids[cd->vres_params.ac_id]);
  67 }
  68
  69 void gui_print_status()
  70 {
  71         fwp_contract_data_t *cd;
  72         struct foreach_contract fec;
  73         int y;
  74         char str[200];
  75
  76         clear();                /* Repaint the screen completely to
  77                                  * delete error messages */
  78         mvaddstr(0, 0, "FWP Manager");
  79         sprintf(str, "Reserved utilization: %d%%", fwp_reserved_utilization/100);
  80         mvaddstr(2, 0, str);
  81
  82         /* Print header */
  83         y=4;
  84         print_contract(y, NULL);
  85         y++;
  86
  87         /* Print contracts */
  88         fec.contdata_new = NULL;
  89         for (cd=foreach_contract_begin(&fec);
  90              cd;
  91              cd=foreach_contract_next(&fec)) {
  92                 print_contract(y, cd);
  93                 y++;
  94         }
  95         refresh();
  96 }
  97
  98 void gui_end(void)
  99 {
 100         endwin();
 101 }