ilo-pona/xv6-65oo2
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Activity

kill user process when it generates an unhandled trap (e.g., 13)

Browse source 
fix bug in test code of malloc
This commit is contained in:
kaashoek 2006-08-25 00:43:17 +00:00
parent 81d5219998
commit 74493bf446
3 changed files with 3 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
trap.c
View file

@ -126,8 +126,10 @@ trap(struct trapframe *tf)
}
cprintf("trap %d from cpu %d eip %x\n", v, cpu(), tf->eip);
if(curproc[cpu()])
if(curproc[cpu()]) {
cprintf("pid %d\n", curproc[cpu()]->pid);
proc_exit();
}
// panic("trap");
return;

6
umalloc.c
View file

@ -26,8 +26,6 @@ free(void *ap)
{
Header *bp, *p;
printf(1, "free\n");
bp = (Header *) ap - 1;
for (p = freep; !(bp > p && bp < p->s.ptr); p = p->s.ptr)
if (p >= p->s.ptr && (bp > p || bp < p->s.ptr))
@ -53,7 +51,6 @@ morecore(uint nu)
if (nu < PAGE)
nu = PAGE;
printf(1, "call sbrk\n");
cp = sbrk(nu * sizeof(Header));
if (cp == (char *) -1)
return 0;
@ -69,8 +66,6 @@ malloc(uint nbytes)
Header *p, *prevp;
uint nunits;
printf(1, "malloc %d\n", nbytes);
nunits = (nbytes + sizeof(Header) - 1)/sizeof(Header) + 1;
if ((prevp = freep) == 0) {
base.s.ptr = freep = prevp = &base;
@ -86,7 +81,6 @@ malloc(uint nbytes)
p->s.size = nunits;
}
freep = prevp;
printf(1, "malloc returns: %d\n", (int) (p+1));
return (void *) (p + 1);
}
if (p == freep)

12
usertests.c
View file

@ -120,20 +120,8 @@ exitwait(void)
void
mem(void)
{
void *m = malloc(4096);
void *m1, *m2;
free(m + 3*1024);
free(m + 2*1024);
free(m + 1024);
free(m);
m1 = malloc(4096);
if (m1 != m) {
puts("didn't coalesce\n");
exit();
}
free(m1);
m1 = 0;
while ((m2 = malloc(1024)) != 0) {
*(char **) m2 = m1;