Mercurial > hg > graal-jvmci-8
comparison src/share/vm/gc_implementation/g1/g1OopClosures.hpp @ 526:818efdefcc99
6484956: G1: improve evacuation pause efficiency
Summary: A bunch of performance optimizations to decrease GC pause times in G1.
Reviewed-by: apetrusenko, jmasa, iveresov
author | tonyp |
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date | Fri, 16 Jan 2009 13:02:20 -0500 |
parents | 37f87013dfd8 |
children | 0fbdb4381b99 |
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519:65de26b5ea82 | 526:818efdefcc99 |
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75 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | 75 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
76 }; | 76 }; |
77 | 77 |
78 #define G1_PARTIAL_ARRAY_MASK 1 | 78 #define G1_PARTIAL_ARRAY_MASK 1 |
79 | 79 |
80 inline bool has_partial_array_mask(oop* ref) { | |
81 return (intptr_t) ref & G1_PARTIAL_ARRAY_MASK; | |
82 } | |
83 | |
84 inline oop* set_partial_array_mask(oop obj) { | |
85 return (oop*) ((intptr_t) obj | G1_PARTIAL_ARRAY_MASK); | |
86 } | |
87 | |
88 inline oop clear_partial_array_mask(oop* ref) { | |
89 return oop((intptr_t) ref & ~G1_PARTIAL_ARRAY_MASK); | |
90 } | |
91 | |
80 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { | 92 class G1ParScanPartialArrayClosure : public G1ParClosureSuper { |
81 G1ParScanClosure _scanner; | 93 G1ParScanClosure _scanner; |
82 template <class T> void process_array_chunk(oop obj, int start, int end); | 94 template <class T> void process_array_chunk(oop obj, int start, int end); |
83 public: | 95 public: |
84 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : | 96 G1ParScanPartialArrayClosure(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state) : |
99 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, | 111 G1ParCopyHelper(G1CollectedHeap* g1, G1ParScanThreadState* par_scan_state, |
100 G1ParScanClosure *scanner) : | 112 G1ParScanClosure *scanner) : |
101 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } | 113 G1ParClosureSuper(g1, par_scan_state), _scanner(scanner) { } |
102 }; | 114 }; |
103 | 115 |
104 template<bool do_gen_barrier, G1Barrier barrier, bool do_mark_forwardee> | 116 template<bool do_gen_barrier, G1Barrier barrier, |
117 bool do_mark_forwardee, bool skip_cset_test> | |
105 class G1ParCopyClosure : public G1ParCopyHelper { | 118 class G1ParCopyClosure : public G1ParCopyHelper { |
106 G1ParScanClosure _scanner; | 119 G1ParScanClosure _scanner; |
107 void do_oop_work(oop* p); | 120 void do_oop_work(oop* p); |
108 void do_oop_work(narrowOop* p) { guarantee(false, "NYI"); } | 121 void do_oop_work(narrowOop* p) { guarantee(false, "NYI"); } |
109 public: | 122 public: |
117 inline void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); } | 130 inline void do_oop_nv(narrowOop* p) { guarantee(false, "NYI"); } |
118 virtual void do_oop(oop* p) { do_oop_nv(p); } | 131 virtual void do_oop(oop* p) { do_oop_nv(p); } |
119 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } | 132 virtual void do_oop(narrowOop* p) { do_oop_nv(p); } |
120 }; | 133 }; |
121 | 134 |
122 typedef G1ParCopyClosure<false, G1BarrierNone, false> G1ParScanExtRootClosure; | 135 typedef G1ParCopyClosure<false, G1BarrierNone, false, false> G1ParScanExtRootClosure; |
123 typedef G1ParCopyClosure<true, G1BarrierNone, false> G1ParScanPermClosure; | 136 typedef G1ParCopyClosure<true, G1BarrierNone, false, false> G1ParScanPermClosure; |
124 typedef G1ParCopyClosure<false, G1BarrierNone, true> G1ParScanAndMarkExtRootClosure; | 137 typedef G1ParCopyClosure<false, G1BarrierNone, true, false> G1ParScanAndMarkExtRootClosure; |
125 typedef G1ParCopyClosure<true, G1BarrierNone, true> G1ParScanAndMarkPermClosure; | 138 typedef G1ParCopyClosure<true, G1BarrierNone, true, false> G1ParScanAndMarkPermClosure; |
126 typedef G1ParCopyClosure<false, G1BarrierRS, false> G1ParScanHeapRSClosure; | 139 typedef G1ParCopyClosure<false, G1BarrierRS, false, false> G1ParScanHeapRSClosure; |
127 typedef G1ParCopyClosure<false, G1BarrierRS, true> G1ParScanAndMarkHeapRSClosure; | 140 typedef G1ParCopyClosure<false, G1BarrierRS, true, false> G1ParScanAndMarkHeapRSClosure; |
128 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure; | 141 // This is the only case when we set skip_cset_test. Basically, this |
129 | 142 // closure is (should?) only be called directly while we're draining |
143 // the overflow and task queues. In that case we know that the | |
144 // reference in question points into the collection set, otherwise we | |
145 // would not have pushed it on the queue. | |
146 typedef G1ParCopyClosure<false, G1BarrierEvac, false, true> G1ParScanHeapEvacClosure; | |
147 // We need a separate closure to handle references during evacuation | |
148 // failure processing, as it cannot asume that the reference already | |
149 // points to the collection set (like G1ParScanHeapEvacClosure does). | |
150 typedef G1ParCopyClosure<false, G1BarrierEvac, false, false> G1ParScanHeapEvacFailureClosure; | |
130 | 151 |
131 class FilterIntoCSClosure: public OopClosure { | 152 class FilterIntoCSClosure: public OopClosure { |
132 G1CollectedHeap* _g1; | 153 G1CollectedHeap* _g1; |
133 OopClosure* _oc; | 154 OopClosure* _oc; |
134 DirtyCardToOopClosure* _dcto_cl; | 155 DirtyCardToOopClosure* _dcto_cl; |