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Shorter reporting of contiguous identical blocks for the IS VM dump (F8) to avoid MFS frrom filling many screens

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This commit is contained in:
Erik van der Kouwe 2010-07-27 18:46:08 +00:00
parent dafc8f1062
commit 6dec907191
1 changed files with 50 additions and 4 deletions
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54
servers/is/dmp_vm.c
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@ -8,10 +8,43 @@
#define LINES 24
PRIVATE void print_region(struct vm_region_info *vri)
PRIVATE void print_region(struct vm_region_info *vri, int *n)
{
static int vri_count, vri_prev_set;
static struct vm_region_info vri_prev;
char c;
int is_repeat;
/* part of a contiguous identical run? */
is_repeat =
vri &&
vri_prev_set &&
vri->vri_seg == vri_prev.vri_seg &&
vri->vri_prot == vri_prev.vri_prot &&
vri->vri_flags == vri_prev.vri_flags &&
vri->vri_length == vri_prev.vri_length &&
vri->vri_addr == vri_prev.vri_addr + vri_prev.vri_length;
if (vri) {
vri_prev_set = 1;
vri_prev = *vri;
} else {
vri_prev_set = 0;
}
if (is_repeat) {
vri_count++;
return;
}
if (vri_count > 0) {
printf(" (contiguously repeated %d more times)\n", vri_count);
(*n)++;
vri_count = 0;
}
/* NULL indicates the end of a list of mappings, nothing else to do */
if (!vri) return;
/* first in a run, print all info */
switch (vri->vri_seg) {
case T: c = 'T'; break;
case D: c = 'D'; break;
@ -25,6 +58,7 @@ PRIVATE void print_region(struct vm_region_info *vri)
(vri->vri_prot & PROT_EXEC) ? 'x' : '-',
(vri->vri_flags & MAP_SHARED) ? 's' : 'p',
vri->vri_length / 1024L);
(*n)++;
}
PUBLIC void vm_dmp()
@ -96,10 +130,22 @@ PUBLIC void vm_dmp()
n++;
}
for (j = 0; j < r; j++) {
print_region(&vri[j]);
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;