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comparison src/share/vm/gc_implementation/g1/g1RemSet.inline.hpp @ 845:df6caf649ff7

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6700789: G1: Enable use of compressed oops with G1 heaps Summary: Modifications to G1 so as to allow the use of compressed oops. Reviewed-by: apetrusenko, coleenp, jmasa, kvn, never, phh, tonyp
author ysr
date Tue, 14 Jul 2009 15:40:39 -0700
parents 96b229c54d1e
children 18f526145aea
comparison
equal deleted inserted replaced
839:bb18957ad21e 845:df6caf649ff7
28 } else { 28 } else {
29 return 1; 29 return 1;
30 } 30 }
31 } 31 }
32 32
33 inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, oop* p) { 33 template <class T> inline void HRInto_G1RemSet::write_ref_nv(HeapRegion* from, T* p) {
34 par_write_ref(from, p, 0); 34 par_write_ref_nv(from, p, 0);
35 }
36
37 inline void HRInto_G1RemSet::write_ref(HeapRegion* from, oop* p) {
38 write_ref_nv(from, p);
39 } 35 }
40 36
41 inline bool HRInto_G1RemSet::self_forwarded(oop obj) { 37 inline bool HRInto_G1RemSet::self_forwarded(oop obj) {
42 bool result = (obj->is_forwarded() && (obj->forwardee()== obj)); 38 bool result = (obj->is_forwarded() && (obj->forwardee()== obj));
43 return result; 39 return result;
44 } 40 }
45 41
46 inline void HRInto_G1RemSet::par_write_ref(HeapRegion* from, oop* p, int tid) { 42 template <class T> inline void HRInto_G1RemSet::par_write_ref_nv(HeapRegion* from, T* p, int tid) {
47 oop obj = *p; 43 oop obj = oopDesc::load_decode_heap_oop(p);
48 #ifdef ASSERT 44 #ifdef ASSERT
49 // can't do because of races 45 // can't do because of races
50 // assert(obj == NULL || obj->is_oop(), "expected an oop"); 46 // assert(obj == NULL || obj->is_oop(), "expected an oop");
51 47
52 // Do the safe subset of is_oop 48 // Do the safe subset of is_oop
69 // self forwarding pointers onto our _new_refs list. 65 // self forwarding pointers onto our _new_refs list.
70 // The _par_traversal_in_progress flag is true during the collection pause, 66 // The _par_traversal_in_progress flag is true during the collection pause,
71 // false during the evacuation failure handing. 67 // false during the evacuation failure handing.
72 if (_par_traversal_in_progress && 68 if (_par_traversal_in_progress &&
73 to->in_collection_set() && !self_forwarded(obj)) { 69 to->in_collection_set() && !self_forwarded(obj)) {
74 _new_refs[tid]->push(p); 70 _new_refs[tid]->push((void*)p);
75 // Deferred updates to the Cset are either discarded (in the normal case), 71 // Deferred updates to the Cset are either discarded (in the normal case),
76 // or processed (if an evacuation failure occurs) at the end 72 // or processed (if an evacuation failure occurs) at the end
77 // of the collection. 73 // of the collection.
78 // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do(). 74 // See HRInto_G1RemSet::cleanup_after_oops_into_collection_set_do().
79 } else { 75 } else {
87 to->rem_set()->add_reference(p, tid); 83 to->rem_set()->add_reference(p, tid);
88 } 84 }
89 } 85 }
90 } 86 }
91 87
92 inline void UpdateRSOopClosure::do_oop(narrowOop* p) { 88 template <class T> inline void UpdateRSOopClosure::do_oop_work(T* p) {
93 guarantee(false, "NYI");
94 }
95
96 inline void UpdateRSOopClosure::do_oop(oop* p) {
97 assert(_from != NULL, "from region must be non-NULL"); 89 assert(_from != NULL, "from region must be non-NULL");
98 _rs->par_write_ref(_from, p, _worker_i); 90 _rs->par_write_ref(_from, p, _worker_i);
99 } 91 }