servers/is/dmp_vm.c

   1 /* Debugging dump procedures for the VM server. */
   2
   3 #include "inc.h"
   4 #include <sys/mman.h>
   5 #include <minix/vm.h>
   6 #include <timers.h>
   7 #include "kernel/proc.h"
   8
   9 #define LINES 24
  10
  11 PRIVATE void print_region(struct vm_region_info *vri)
  12 {
  13   char c;
  14
  15   switch (vri->vri_seg) {
  16   case T: c = 'T'; break;
  17   case D: c = 'D'; break;
  18   default: c = '?';
  19   }
  20
  21   printf("  %c %08lx-%08lx %c%c%c %c (%lu kB)\n", c, vri->vri_addr,
  22         vri->vri_addr + vri->vri_length,
  23         (vri->vri_prot & PROT_READ) ? 'r' : '-',
  24         (vri->vri_prot & PROT_WRITE) ? 'w' : '-',
  25         (vri->vri_prot & PROT_EXEC) ? 'x' : '-',
  26         (vri->vri_flags & MAP_SHARED) ? 's' : 'p',
  27         vri->vri_length / 1024L);
  28 }
  29
  30 PUBLIC void vm_dmp()
  31 {
  32   static struct proc proc[NR_TASKS + NR_PROCS];
  33   static struct vm_region_info vri[LINES];
  34   struct vm_stats_info vsi;
  35   struct vm_usage_info vui;
  36   static int prev_i = -1;
  37   static vir_bytes prev_base = 0;
  38   int r, r2, i, j, first, n = 0;
  39
  40   if (prev_i == -1) {
  41         if ((r = vm_info_stats(&vsi)) != OK) {
  42                 printf("IS: warning: couldn't talk to VM: %d\n", r);
  43                 return;
  44         }
  45
  46         printf("Total %u kB, free %u kB, largest free area %u kB\n",
  47                 vsi.vsi_total * (vsi.vsi_pagesize / 1024),
  48                 vsi.vsi_free * (vsi.vsi_pagesize / 1024),
  49                 vsi.vsi_largest * (vsi.vsi_pagesize / 1024));
  50         n++;
  51         printf("\n");
  52         n++;
  53
  54         prev_i++;
  55   }
  56
  57   if ((r = sys_getproctab(proc)) != OK) {
  58         printf("IS: warning: couldn't get copy of process table: %d\n", r);
  59         return;
  60   }
  61
  62   for (i = prev_i; i < NR_TASKS + NR_PROCS && n < LINES; i++, prev_base = 0) {
  63         if (i < NR_TASKS || isemptyp(&proc[i])) continue;
  64
  65         /* The first batch dump for each process contains a header line. */
  66         first = prev_base == 0;
  67
  68         r = vm_info_region(proc[i].p_endpoint, vri, LINES - first, &prev_base);
  69
  70         if (r < 0) {
  71                 printf("Process %d (%s): error %d\n",
  72                         proc[i].p_endpoint, proc[i].p_name, r);
  73                 n++;
  74                 continue;
  75         }
  76
  77         if (first) {
  78                 /* The entire batch should fit on the screen. */
  79                 if (n + 1 + r > LINES) {
  80                         prev_base = 0;  /* restart on next page */
  81                         break;
  82                 }
  83
  84                 if ((r2 = vm_info_usage(proc[i].p_endpoint, &vui)) != OK) {
  85                         printf("Process %d (%s): error %d\n",
  86                                 proc[i].p_endpoint, proc[i].p_name, r2);
  87                         n++;
  88                         continue;
  89                 }
  90
  91                 printf("Process %d (%s): total %lu kB, common %lu kB, "
  92                         "shared %lu kB\n",
  93                         proc[i].p_endpoint, proc[i].p_name,
  94                         vui.vui_total / 1024L, vui.vui_common / 1024L,
  95                         vui.vui_shared / 1024L);
  96                 n++;
  97         }
  98
  99         for (j = 0; j < r; j++) {
 100                 print_region(&vri[j]);
 101                 n++;
 102         }
 103
 104         if (n > LINES) printf("IS: internal error\n");
 105         if (n == LINES) break;
 106
 107         /* This may have to wipe out the "--more--" from below. */
 108         printf("        \n");
 109         n++;
 110   }
 111
 112   if (i >= NR_TASKS + NR_PROCS) {
 113         i = -1;
 114         prev_base = 0;
 115   }
 116   else printf("--more--\r");
 117   prev_i = i;
 118 }
 119