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Add code to parse the utrace(2) entries generated by malloc(3) in a more

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human-readable format.  Note that we report 'realloc(p, 0)' as 'free(p)'
since both cases are encoded the same way and 'free()' is more common
than a realloc() to 0.

MFC after:	1 week
This commit is contained in:
John Baldwin 2007-01-05 21:04:37 +00:00
parent ea9b97d2bd
commit 670b9e9fda
1 changed files with 30 additions and 1 deletions
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31
usr.bin/kdump/kdump.c
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@ -975,9 +975,39 @@ ktrcsw(struct ktr_csw *cs)
cs->user ? "user" : "kernel");
}
struct utrace_malloc {
void *p;
size_t s;
void *r;
};
void
ktruser_malloc(int len, unsigned char *p)
{
struct utrace_malloc *ut = (struct utrace_malloc *)p;
if (ut->p == NULL) {
if (ut->s == 0 && ut->r == NULL)
printf("malloc_init()\n");
else
printf("%p = malloc(%zu)\n", ut->r, ut->s);
} else {
if (ut->s == 0)
printf("free(%p)\n", ut->p);
else
printf("%p = realloc(%p, %zu)\n", ut->r, ut->p, ut->s);
}
}
void
ktruser(int len, unsigned char *p)
{
if (len == sizeof(struct utrace_malloc)) {
ktruser_malloc(len, p);
return;
}
(void)printf("%d ", len);
while (len--)
if (decimal)
@ -985,7 +1015,6 @@ ktruser(int len, unsigned char *p)
else
(void)printf(" %02x", *p++);
(void)printf("\n");
}
void