static PN_SIZE pngc_mark_array(Potion *P, register _PN *x, register long n, int forward) {
_PN v;
PN_SIZE i = 0;
struct PNMemory *M = P->mem;
while (n--) {
v = *x;
if (IS_GC_PROTECTED(v) || IN_BIRTH_REGION(v) || IN_OLDER_REGION(v)) {
v = potion_fwd(v);
switch (forward) {
case 0: // count only
if (!IS_GC_PROTECTED(v) && IN_BIRTH_REGION(v) && HAS_REAL_TYPE(v))
i++;
break;
case 1: // minor
if (!IS_GC_PROTECTED(v) && IN_BIRTH_REGION(v) && HAS_REAL_TYPE(v)) {
GC_FORWARD(x, v);
i++;
}
break;
case 2: // major
if (!IS_GC_PROTECTED(v) && (IN_BIRTH_REGION(v) || IN_OLDER_REGION(v)) && HAS_REAL_TYPE(v)) {
GC_FORWARD(x, v);
i++;
}
break;
}
}
x++;
}
return i;
}
void potion_test_allocated(CuTest *T) {
struct PNMemory *M = P->mem;
void *prev = NULL;
void *scanptr = (void *)((char *)M->birth_lo + PN_ALIGN(sizeof(struct PNMemory), 8));
while ((PN)scanptr < (PN)M->birth_cur) {
if (((struct PNFwd *)scanptr)->fwd != POTION_FWD && ((struct PNFwd *)scanptr)->fwd != POTION_COPIED) {
if (((struct PNObject *)scanptr)->vt > PN_TUSER) {
vPN(Object) o = (struct PNObject *)scanptr;
fprintf(stderr, "error: scanning heap from %p to %p\n",
M->birth_lo, M->birth_cur);
fprintf(stderr, "%p in %s region\n", scanptr,
IS_GC_PROTECTED(scanptr) ? "protected"
: IN_BIRTH_REGION(scanptr) ? "birth"
: IN_OLDER_REGION(scanptr) ? "older"
: "gc");
fprintf(stderr, "%p { uniq:0x%08x vt:0x%08x ivars[0]:0x%08lx type:0x%x}\n",
scanptr, o->uniq, o->vt, o->ivars[0],
potion_type((PN)scanptr));
fprintf(stderr, "prev %p: size=%d, type:0x%x (%s)\n",
prev, potion_type_size(P, prev),
potion_type((PN)prev), AS_STR(PN_VTABLE(PN_TYPE((PN)prev))));
#ifdef DEBUG
//potion_dump_stack(P);
#endif
}
CuAssert(T, "wrong type for allocated object", ((struct PNObject *)scanptr)->vt <= PN_TUSER);
}
prev = scanptr;
scanptr = (void *)((char *)scanptr + potion_type_size(P, scanptr));
CuAssert(T, "allocated object goes beyond GC pointer", (PN)scanptr <= (PN)M->birth_cur);
}
}
ATTRIBUTE_NO_ADDRESS_SAFETY_ANALYSIS
static PN_SIZE pngc_mark_array(Potion *P, register _PN *x, register long n, int type) {
_PN v;
PN_SIZE i = 0;
struct PNMemory *M = P->mem;
while (n--) {
v = *x;
if (IS_GC_PROTECTED(v) || IN_BIRTH_REGION(v) || IN_OLDER_REGION(v)) {
v = potion_fwd(v);
switch (type) {
case 0: // count only
if (!IS_GC_PROTECTED(v) && IN_BIRTH_REGION(v) && HAS_REAL_TYPE(v)) {
i++;
DBG_Gv(P,"GC mark count only %p %6x\n", x, PN_TYPE(*x));
}
break;
case 1: // minor
if (!IS_GC_PROTECTED(v) && IN_BIRTH_REGION(v) && HAS_REAL_TYPE(v)) {
GC_FORWARD(x, v);
i++;
DBG_Gv(P,"GC mark minor %p -> 0x%lx %6x\n", x, v, PN_TYPE(*x));
}
break;
case 2: // major
if (!IS_GC_PROTECTED(v) && (IN_BIRTH_REGION(v) || IN_OLDER_REGION(v)) && HAS_REAL_TYPE(v)) {
GC_FORWARD(x, v);
i++;
DBG_Gv(P,"GC mark major %p -> 0x%lx %6x\n", x, v, PN_TYPE(*x));
}
break;
}
}
x++;
}
return i;
}
void potion_dump_stack(Potion *P) {
long n;
PN *end, *ebp, *start = P->mem->cstack;
struct PNMemory *M = P->mem;
POTION_ESP(&end);
POTION_EBP(&ebp);
#if POTION_STACK_DIR > 0
n = end - start;
#else
n = start - end + 1;
start = end;
end = M->cstack;
#endif
printf("-- dumping %ld stack from %p to %p --\n", n, start, end);
printf(" ebp = %p, *ebp = %lx\n", ebp, *ebp);
while (n--) {
vPN(Object) o = (struct PNObject*)*start;
printf(" stack(%ld) = %p: %lx", n, start, *start);
if (IS_GC_PROTECTED(*start))
printf(" vt=%x gc", PN_TYPE(o));
else if (IN_BIRTH_REGION(*start))
printf(" vt=%x gc(0)", PN_TYPE(o));
else if (IN_OLDER_REGION(*start))
printf(" vt=%x gc(1)", PN_TYPE(o));
if (*start == 0)
printf(" nil\n");
else if (*start & 1)
printf(" %ld INT\n", PN_INT(*start));
else if (*start & 2)
printf(" %s BOOL\n", *start == 2 ? "false" : "true");
else
printf(" \n");
start++;
}
}