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comparison src/share/vm/services/memTrackWorker.hpp @ 7464:ecd24264898b

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8005048: NMT: #loaded classes needs to just show the # defined classes Summary: Count number of instance classes so that it matches class metadata size Reviewed-by: coleenp, acorn
author zgu
date Tue, 08 Jan 2013 14:04:25 -0500
parents 7e5976e66c62
children 4102b59539ce
comparison
equal deleted inserted replaced
7396:4a2ed49abd51 7464:ecd24264898b
30 #include "services/memRecorder.hpp" 30 #include "services/memRecorder.hpp"
31 31
32 // Maximum MAX_GENERATIONS generation data can be tracked. 32 // Maximum MAX_GENERATIONS generation data can be tracked.
33 #define MAX_GENERATIONS 512 33 #define MAX_GENERATIONS 512
34 34
35 class GenerationData : public _ValueObj {
36 private:
37 int _number_of_classes;
38 MemRecorder* _recorder_list;
39
40 public:
41 GenerationData(): _number_of_classes(0), _recorder_list(NULL) { }
42
43 inline int number_of_classes() const { return _number_of_classes; }
44 inline void set_number_of_classes(long num) { _number_of_classes = num; }
45
46 inline MemRecorder* next_recorder() {
47 if (_recorder_list == NULL) {
48 return NULL;
49 } else {
50 MemRecorder* tmp = _recorder_list;
51 _recorder_list = _recorder_list->next();
52 return tmp;
53 }
54 }
55
56 inline bool has_more_recorder() const {
57 return (_recorder_list != NULL);
58 }
59
60 // add recorders to this generation
61 void add_recorders(MemRecorder* head) {
62 if (head != NULL) {
63 if (_recorder_list == NULL) {
64 _recorder_list = head;
65 } else {
66 MemRecorder* tmp = _recorder_list;
67 for (; tmp->next() != NULL; tmp = tmp->next());
68 tmp->set_next(head);
69 }
70 }
71 }
72
73 void reset();
74
75 NOT_PRODUCT(MemRecorder* peek() const { return _recorder_list; })
76 };
35 77
36 class MemTrackWorker : public NamedThread { 78 class MemTrackWorker : public NamedThread {
37 private: 79 private:
38 // circular buffer. This buffer contains recorders to be merged into global 80 // circular buffer. This buffer contains generation data to be merged into global
39 // snaphsot. 81 // snaphsot.
40 // Each slot holds a linked list of memory recorders, that contains one 82 // Each slot holds a generation
41 // generation of memory data. 83 GenerationData _gen[MAX_GENERATIONS];
42 MemRecorder* _gen[MAX_GENERATIONS]; 84 int _head, _tail; // head and tail pointers to above circular buffer
43 int _head, _tail; // head and tail pointers to above circular buffer
44 85
45 bool _has_error; 86 bool _has_error;
46 87
47 public: 88 public:
48 MemTrackWorker(); 89 MemTrackWorker();
49 ~MemTrackWorker(); 90 ~MemTrackWorker();
50 _NOINLINE_ void* operator new(size_t size); 91 _NOINLINE_ void* operator new(size_t size);
54 void run(); 95 void run();
55 96
56 inline bool has_error() const { return _has_error; } 97 inline bool has_error() const { return _has_error; }
57 98
58 // task at synchronization point 99 // task at synchronization point
59 void at_sync_point(MemRecorder* pending_recorders); 100 void at_sync_point(MemRecorder* pending_recorders, int number_of_classes);
60 101
61 // for debugging purpose, they are not thread safe. 102 // for debugging purpose, they are not thread safe.
62 NOT_PRODUCT(static int count_recorder(const MemRecorder* head);) 103 NOT_PRODUCT(static int count_recorder(const MemRecorder* head);)
63 NOT_PRODUCT(int count_pending_recorders() const;) 104 NOT_PRODUCT(int count_pending_recorders() const;)
64 105