C++ (Cpp) vm_info_region Examples

Example #1

File: coredump.c Project: Hooman3/minix

/*===========================================================================*
 *				get_memory_regions			     *
 *===========================================================================*/
static int get_memory_regions(Elf_Phdr phdrs[])
{
  /* Print the virtual memory regions of a process. */

  /* The same as dump_regions from procfs/pid.c */
  struct vm_region_info vri[MAX_VRI_COUNT];
  vir_bytes next;
  int i, r, count;
  Elf_Word pflags;

  count = 0;
  next = 0;

  do {
	r = vm_info_region(fp->fp_endpoint, vri, MAX_VRI_COUNT, &next);
	if (r < 0) return r;
	if (r == 0) break;

	for (i = 0; i < r; i++) {
		pflags =  (vri[i].vri_prot & PROT_READ ? PF_R : 0)
			| (vri[i].vri_prot & PROT_WRITE ? PF_W : 0)
			| (vri[i].vri_prot & PROT_EXEC ? PF_X : 0);

		fill_prog_header (&phdrs[count + 1], PT_LOAD,
				0, vri[i].vri_addr, pflags,
				vri[i].vri_length, vri[i].vri_length);
		count++;

		if (count >= MAX_REGIONS) {
			printf("VFS: get_memory_regions Warning: "
				"Program has too many regions\n");
			return(count);
		}
	}
  } while (r == MAX_VRI_COUNT);

  return(count);
}

Example #2

File: dmp_vm.c Project: AgamAgarwal/minix

void vm_dmp()
{
  static struct proc proc[NR_TASKS + NR_PROCS];
  static struct vm_region_info vri[LINES];
  struct vm_stats_info vsi;
  struct vm_usage_info vui;
  static int prev_i = -1;
  static vir_bytes prev_base = 0;
  int r, r2, i, j, first, n = 0;

  if (prev_i == -1) {
	if ((r = vm_info_stats(&vsi)) != OK) {
		printf("IS: warning: couldn't talk to VM: %d\n", r);
		return;
	}

	printf("Total %lu kB, free %lu kB, largest free %lu kB, cached %lu kB\n",
		vsi.vsi_total * (vsi.vsi_pagesize / 1024),
		vsi.vsi_free * (vsi.vsi_pagesize / 1024),
		vsi.vsi_largest * (vsi.vsi_pagesize / 1024),
		vsi.vsi_cached * (vsi.vsi_pagesize / 1024));
	n++;
	printf("\n");
	n++;

  	prev_i++;
  }

  if ((r = sys_getproctab(proc)) != OK) {
	printf("IS: warning: couldn't get copy of process table: %d\n", r);
	return;
  }

  for (i = prev_i; i < NR_TASKS + NR_PROCS && n < LINES; i++, prev_base = 0) {
	if (i < NR_TASKS || isemptyp(&proc[i])) continue;

	/* The first batch dump for each process contains a header line. */
	first = prev_base == 0;

	r = vm_info_region(proc[i].p_endpoint, vri, LINES - first, &prev_base);

	if (r < 0) {
		printf("Process %d (%s): error %d\n",
			proc[i].p_endpoint, proc[i].p_name, r);
		n++;
		continue;
	}

	if (first) {
		/* The entire batch should fit on the screen. */
		if (n + 1 + r > LINES) {
			prev_base = 0;	/* restart on next page */
			break;
		}

		if ((r2 = vm_info_usage(proc[i].p_endpoint, &vui)) != OK) {
			printf("Process %d (%s): error %d\n",
				proc[i].p_endpoint, proc[i].p_name, r2);
			n++;
			continue;
		}

		printf("Process %d (%s): total %lu kB, common %lu kB, "
			"shared %lu kB\n",
			proc[i].p_endpoint, proc[i].p_name,
			vui.vui_total / 1024L, vui.vui_common / 1024L,
			vui.vui_shared / 1024L);
		n++;
	}

	while (r > 0) {
		for (j = 0; j < r; j++) {
			print_region(&vri[j], &n);
		}

		if (LINES - n - 1 <= 0) break;
		r = vm_info_region(proc[i].p_endpoint, vri, LINES - n - 1,
			&prev_base);

		if (r < 0) {
			printf("Process %d (%s): error %d\n",
				proc[i].p_endpoint, proc[i].p_name, r);
			n++;
		}
	}
	print_region(NULL, &n);

	if (n > LINES) printf("IS: internal error\n");
	if (n == LINES) break;

	/* This may have to wipe out the "--more--" from below. */
	printf("        \n");
	n++;
  }

  if (i >= NR_TASKS + NR_PROCS) {
	i = -1;
	prev_base = 0;
  }
  else printf("--more--\r");
  prev_i = i;
}