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comparison src/share/vm/gc_implementation/g1/g1RemSet.hpp @ 10372:e72f7eecc96d

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8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen Summary: Fixed the output of G1SummarizeRSetStats: too small datatype for the number of concurrently processed cards, added concurrent remembered set thread time retrieval for Linux and Windows (BSD uses os::elapsedTime() now), and other cleanup. The information presented during VM operation is now relative to the previous output, not always cumulative if G1SummarizeRSetStatsPeriod > 0. At VM exit, the code prints a cumulative summary. Reviewed-by: johnc, jwilhelm
author tschatzl
date Tue, 28 May 2013 09:32:06 +0200
parents 194f52aa2f23
children 5888334c9c24
comparison
equal deleted inserted replaced
10371:c20186fa611b 10372:e72f7eecc96d
23 */ 23 */
24 24
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1REMSET_HPP
27 27
28 #include "gc_implementation/g1/g1RemSetSummary.hpp"
29
28 // A G1RemSet provides ways of iterating over pointers into a selected 30 // A G1RemSet provides ways of iterating over pointers into a selected
29 // collection set. 31 // collection set.
30 32
31 class G1CollectedHeap; 33 class G1CollectedHeap;
32 class CardTableModRefBarrierSet; 34 class CardTableModRefBarrierSet;
35 // A G1RemSet in which each heap region has a rem set that records the 37 // A G1RemSet in which each heap region has a rem set that records the
36 // external heap references into it. Uses a mod ref bs to track updates, 38 // external heap references into it. Uses a mod ref bs to track updates,
37 // so that they can be used to update the individual region remsets. 39 // so that they can be used to update the individual region remsets.
38 40
39 class G1RemSet: public CHeapObj<mtGC> { 41 class G1RemSet: public CHeapObj<mtGC> {
42 private:
43 G1RemSetSummary _prev_period_summary;
40 protected: 44 protected:
41 G1CollectedHeap* _g1; 45 G1CollectedHeap* _g1;
42 unsigned _conc_refine_cards; 46 size_t _conc_refine_cards;
43 uint n_workers(); 47 uint n_workers();
44 48
45 protected: 49 protected:
46 enum SomePrivateConstants { 50 enum SomePrivateConstants {
47 UpdateRStoMergeSync = 0, 51 UpdateRStoMergeSync = 0,
64 68
65 // Used for caching the closure that is responsible for scanning 69 // Used for caching the closure that is responsible for scanning
66 // references into the collection set. 70 // references into the collection set.
67 OopsInHeapRegionClosure** _cset_rs_update_cl; 71 OopsInHeapRegionClosure** _cset_rs_update_cl;
68 72
73 // Print the given summary info
74 virtual void print_summary_info(G1RemSetSummary * summary, const char * header = NULL);
69 public: 75 public:
70 // This is called to reset dual hash tables after the gc pause 76 // This is called to reset dual hash tables after the gc pause
71 // is finished and the initial hash table is no longer being 77 // is finished and the initial hash table is no longer being
72 // scanned. 78 // scanned.
73 void cleanupHRRS(); 79 void cleanupHRRS();
121 // current collection set. 127 // current collection set.
122 virtual bool refine_card(jbyte* card_ptr, 128 virtual bool refine_card(jbyte* card_ptr,
123 int worker_i, 129 int worker_i,
124 bool check_for_refs_into_cset); 130 bool check_for_refs_into_cset);
125 131
126 // Print any relevant summary info. 132 // Print accumulated summary info from the start of the VM.
127 virtual void print_summary_info(); 133 virtual void print_summary_info();
134
135 // Print accumulated summary info from the last time called.
136 virtual void print_periodic_summary_info();
128 137
129 // Prepare remembered set for verification. 138 // Prepare remembered set for verification.
130 virtual void prepare_for_verify(); 139 virtual void prepare_for_verify();
140
141 size_t conc_refine_cards() const {
142 return _conc_refine_cards;
143 }
131 }; 144 };
132 145
133 class CountNonCleanMemRegionClosure: public MemRegionClosure { 146 class CountNonCleanMemRegionClosure: public MemRegionClosure {
134 G1CollectedHeap* _g1; 147 G1CollectedHeap* _g1;
135 int _n; 148 int _n;