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comparison src/share/vm/gc_implementation/g1/g1ParScanThreadState.inline.hpp @ 20296:a3953c777565

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8027959: Early reclamation of large objects in G1 Summary: Try to reclaim humongous objects at every young collection after doing a conservative estimate of its liveness. Reviewed-by: brutisso, mgerdin
author tschatzl
date Wed, 23 Jul 2014 09:03:32 +0200
parents a2328cbebb23
children 6948da6d7c13
comparison
equal deleted inserted replaced
20295:3f2894c5052e 20296:a3953c777565
50 50
51 // Although we never intentionally push references outside of the collection 51 // Although we never intentionally push references outside of the collection
52 // set, due to (benign) races in the claim mechanism during RSet scanning more 52 // set, due to (benign) races in the claim mechanism during RSet scanning more
53 // than one thread might claim the same card. So the same card may be 53 // than one thread might claim the same card. So the same card may be
54 // processed multiple times. So redo this check. 54 // processed multiple times. So redo this check.
55 if (_g1h->in_cset_fast_test(obj)) { 55 G1CollectedHeap::in_cset_state_t in_cset_state = _g1h->in_cset_state(obj);
56 if (in_cset_state == G1CollectedHeap::InCSet) {
56 oop forwardee; 57 oop forwardee;
57 if (obj->is_forwarded()) { 58 if (obj->is_forwarded()) {
58 forwardee = obj->forwardee(); 59 forwardee = obj->forwardee();
59 } else { 60 } else {
60 forwardee = copy_to_survivor_space(obj); 61 forwardee = copy_to_survivor_space(obj);
61 } 62 }
62 assert(forwardee != NULL, "forwardee should not be NULL");
63 oopDesc::encode_store_heap_oop(p, forwardee); 63 oopDesc::encode_store_heap_oop(p, forwardee);
64 } else if (in_cset_state == G1CollectedHeap::IsHumongous) {
65 _g1h->set_humongous_is_live(obj);
66 } else {
67 assert(in_cset_state == G1CollectedHeap::InNeither,
68 err_msg("In_cset_state must be InNeither here, but is %d", in_cset_state));
64 } 69 }
65 70
66 assert(obj != NULL, "Must be"); 71 assert(obj != NULL, "Must be");
67 update_rs(from, p, queue_num()); 72 update_rs(from, p, queue_num());
68 } 73 }