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cosmetic changes

This commit is contained in:
Yuichi Nishiwaki 2015-07-16 15:45:01 +09:00
parent 6d43b31a68
commit a58ebe91a8
1 changed files with 19 additions and 21 deletions
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40
extlib/benz/gc.c
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@ -202,15 +202,13 @@ heap_free(pic_state *pic, void *ap)
if (bp + bp->s.size == p->s.ptr) {
bp->s.size += p->s.ptr->s.size;
bp->s.ptr = p->s.ptr->s.ptr;
}
else {
} else {
bp->s.ptr = p->s.ptr;
}
if (p + p->s.size == bp && p->s.size > 1) {
p->s.size += bp->s.size;
p->s.ptr = bp->s.ptr;
}
else {
} else {
p->s.ptr = bp;
}
pic->heap->freep = p;
@ -715,34 +713,34 @@ gc_sweep_symbols(pic_state *pic)
static void
gc_sweep_page(pic_state *pic, struct heap_page *page)
{
union header *bp, *p, *s = NULL, *t = NULL;
union header *bp, *p, *head = NULL, *tail = NULL;
for (bp = page->basep; ; bp = bp->s.ptr) {
for (p = bp + bp->s.size; p != bp->s.ptr; p += p->s.size) {
if (p == page->endp) {
goto escape;
goto escape;
}
if (! gc_is_marked(p)) {
if (s == NULL) {
s = p;
}
else {
t->s.ptr = p;
}
t = p;
t->s.ptr = NULL; /* For dead objects we can safely reuse ptr field */
if (gc_is_marked(p)) {
gc_unmark(p);
} else {
if (head == NULL) {
head = p;
} else {
tail->s.ptr = p;
}
tail = p;
tail->s.ptr = NULL; /* We can safely reuse ptr field of dead object */
}
gc_unmark(p);
}
}
escape:
/* free! */
while (s != NULL) {
t = s->s.ptr;
gc_finalize_object(pic, (struct pic_object *)(s + 1));
heap_free(pic, s + 1);
s = t;
while (head != NULL) {
p = head;
head = head->s.ptr;
gc_finalize_object(pic, (struct pic_object *)(p + 1));
heap_free(pic, p + 1);
}
}