23 */ |
23 */ |
24 |
24 |
25 #ifndef SHARE_VM_GC_G1_G1PARSCANTHREADSTATE_INLINE_HPP |
25 #ifndef SHARE_VM_GC_G1_G1PARSCANTHREADSTATE_INLINE_HPP |
26 #define SHARE_VM_GC_G1_G1PARSCANTHREADSTATE_INLINE_HPP |
26 #define SHARE_VM_GC_G1_G1PARSCANTHREADSTATE_INLINE_HPP |
27 |
27 |
|
28 #include "gc/g1/g1CollectedHeap.inline.hpp" |
28 #include "gc/g1/g1ParScanThreadState.hpp" |
29 #include "gc/g1/g1ParScanThreadState.hpp" |
29 #include "gc/g1/g1RemSet.hpp" |
30 #include "gc/g1/g1RemSet.hpp" |
30 #include "oops/access.inline.hpp" |
31 #include "oops/access.inline.hpp" |
31 #include "oops/oop.inline.hpp" |
32 #include "oops/oop.inline.hpp" |
32 |
33 |
38 // set, due to (benign) races in the claim mechanism during RSet scanning more |
39 // set, due to (benign) races in the claim mechanism during RSet scanning more |
39 // than one thread might claim the same card. So the same card may be |
40 // than one thread might claim the same card. So the same card may be |
40 // processed multiple times, and so we might get references into old gen here. |
41 // processed multiple times, and so we might get references into old gen here. |
41 // So we need to redo this check. |
42 // So we need to redo this check. |
42 const InCSetState in_cset_state = _g1h->in_cset_state(obj); |
43 const InCSetState in_cset_state = _g1h->in_cset_state(obj); |
43 if (in_cset_state.is_in_cset()) { |
44 // References pushed onto the work stack should never point to a humongous region |
44 markOop m = obj->mark_raw(); |
45 // as they are not added to the collection set due to above precondition. |
45 if (m->is_marked()) { |
46 assert(!in_cset_state.is_humongous(), |
46 obj = (oop) m->decode_pointer(); |
47 "Obj " PTR_FORMAT " should not refer to humongous region %u from " PTR_FORMAT, |
47 } else { |
48 p2i(obj), _g1h->addr_to_region((HeapWord*)obj), p2i(p)); |
48 obj = copy_to_survivor_space(in_cset_state, obj, m); |
49 |
49 } |
50 if (!in_cset_state.is_in_cset()) { |
50 RawAccess<IS_NOT_NULL>::oop_store(p, obj); |
51 // In this case somebody else already did all the work. |
51 } else if (in_cset_state.is_humongous()) { |
52 return; |
52 _g1h->set_humongous_is_live(obj); |
53 } |
53 } else { |
54 |
54 assert(in_cset_state.is_default(), |
55 markOop m = obj->mark_raw(); |
55 "In_cset_state must be NotInCSet here, but is " CSETSTATE_FORMAT, in_cset_state.value()); |
56 if (m->is_marked()) { |
56 } |
57 obj = (oop) m->decode_pointer(); |
|
58 } else { |
|
59 obj = copy_to_survivor_space(in_cset_state, obj, m); |
|
60 } |
|
61 RawAccess<IS_NOT_NULL>::oop_store(p, obj); |
57 |
62 |
58 assert(obj != NULL, "Must be"); |
63 assert(obj != NULL, "Must be"); |
59 if (!HeapRegion::is_in_same_region(p, obj)) { |
64 if (!HeapRegion::is_in_same_region(p, obj)) { |
60 HeapRegion* from = _g1h->heap_region_containing(p); |
65 HeapRegion* from = _g1h->heap_region_containing(p); |
61 update_rs(from, p, obj); |
66 update_rs(from, p, obj); |