Fri, 22 Mar 2013 16:10:01 +0100
8000754: NPG: Implement a MemoryPool MXBean for Metaspace
Reviewed-by: jmasa, stefank
1 /*
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25 #ifndef SHARE_VM_SERVICES_MEMORYSERVICE_HPP
26 #define SHARE_VM_SERVICES_MEMORYSERVICE_HPP
28 #include "memory/allocation.hpp"
29 #include "memory/generation.hpp"
30 #include "runtime/handles.hpp"
31 #include "services/memoryUsage.hpp"
32 #include "gc_interface/gcCause.hpp"
34 // Forward declaration
35 class MemoryPool;
36 class MemoryManager;
37 class GCMemoryManager;
38 class CollectedHeap;
39 class Generation;
40 class DefNewGeneration;
41 class PSYoungGen;
42 class PSOldGen;
43 class CodeHeap;
44 class ContiguousSpace;
45 class CompactibleFreeListSpace;
46 class GenCollectedHeap;
47 class ParallelScavengeHeap;
48 class G1CollectedHeap;
50 // VM Monitoring and Management Support
52 class MemoryService : public AllStatic {
53 private:
54 enum {
55 init_pools_list_size = 10,
56 init_managers_list_size = 5
57 };
59 // index for minor and major generations
60 enum {
61 minor = 0,
62 major = 1,
63 n_gens = 2
64 };
66 static GrowableArray<MemoryPool*>* _pools_list;
67 static GrowableArray<MemoryManager*>* _managers_list;
69 // memory managers for minor and major GC statistics
70 static GCMemoryManager* _major_gc_manager;
71 static GCMemoryManager* _minor_gc_manager;
73 // Code heap memory pool
74 static MemoryPool* _code_heap_pool;
76 // Metaspace pools
77 static MemoryPool* _metaspace_pool;
78 static MemoryPool* _class_metaspace_pool;
80 static void add_generation_memory_pool(Generation* gen,
81 MemoryManager* major_mgr,
82 MemoryManager* minor_mgr);
83 static void add_generation_memory_pool(Generation* gen,
84 MemoryManager* major_mgr) {
85 add_generation_memory_pool(gen, major_mgr, NULL);
86 }
89 static void add_psYoung_memory_pool(PSYoungGen* gen,
90 MemoryManager* major_mgr,
91 MemoryManager* minor_mgr);
92 static void add_psOld_memory_pool(PSOldGen* gen,
93 MemoryManager* mgr);
95 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
96 MemoryManager* major_mgr,
97 MemoryManager* minor_mgr);
98 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
99 MemoryManager* mgr);
101 static MemoryPool* add_space(ContiguousSpace* space,
102 const char* name,
103 bool is_heap,
104 size_t max_size,
105 bool support_usage_threshold);
106 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
107 const char* name,
108 bool is_heap,
109 size_t max_size,
110 bool support_usage_threshold);
111 static MemoryPool* add_gen(Generation* gen,
112 const char* name,
113 bool is_heap,
114 bool support_usage_threshold);
115 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
116 const char* name,
117 bool is_heap,
118 size_t max_size,
119 bool support_usage_threshold);
121 static void add_gen_collected_heap_info(GenCollectedHeap* heap);
122 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
123 static void add_g1_heap_info(G1CollectedHeap* g1h);
125 public:
126 static void set_universe_heap(CollectedHeap* heap);
127 static void add_code_heap_memory_pool(CodeHeap* heap);
128 static void add_metaspace_memory_pools();
130 static MemoryPool* get_memory_pool(instanceHandle pool);
131 static MemoryManager* get_memory_manager(instanceHandle mgr);
133 static const int num_memory_pools() {
134 return _pools_list->length();
135 }
136 static const int num_memory_managers() {
137 return _managers_list->length();
138 }
140 static MemoryPool* get_memory_pool(int index) {
141 return _pools_list->at(index);
142 }
144 static MemoryManager* get_memory_manager(int index) {
145 return _managers_list->at(index);
146 }
148 static void track_memory_usage();
149 static void track_code_cache_memory_usage() {
150 track_memory_pool_usage(_code_heap_pool);
151 }
152 static void track_memory_pool_usage(MemoryPool* pool);
154 static void gc_begin(bool fullGC, bool recordGCBeginTime,
155 bool recordAccumulatedGCTime,
156 bool recordPreGCUsage, bool recordPeakUsage);
157 static void gc_end(bool fullGC, bool recordPostGCUsage,
158 bool recordAccumulatedGCTime,
159 bool recordGCEndTime, bool countCollection,
160 GCCause::Cause cause);
163 static void oops_do(OopClosure* f);
165 static bool get_verbose() { return PrintGC; }
166 static bool set_verbose(bool verbose);
168 // Create an instance of java/lang/management/MemoryUsage
169 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
171 static const GCMemoryManager* get_minor_gc_manager() {
172 return _minor_gc_manager;
173 }
175 static const GCMemoryManager* get_major_gc_manager() {
176 return _major_gc_manager;
177 }
178 };
180 class TraceMemoryManagerStats : public StackObj {
181 private:
182 bool _fullGC;
183 bool _recordGCBeginTime;
184 bool _recordPreGCUsage;
185 bool _recordPeakUsage;
186 bool _recordPostGCUsage;
187 bool _recordAccumulatedGCTime;
188 bool _recordGCEndTime;
189 bool _countCollection;
190 GCCause::Cause _cause;
191 public:
192 TraceMemoryManagerStats() {}
193 TraceMemoryManagerStats(bool fullGC,
194 GCCause::Cause cause,
195 bool recordGCBeginTime = true,
196 bool recordPreGCUsage = true,
197 bool recordPeakUsage = true,
198 bool recordPostGCUsage = true,
199 bool recordAccumulatedGCTime = true,
200 bool recordGCEndTime = true,
201 bool countCollection = true);
203 void initialize(bool fullGC,
204 GCCause::Cause cause,
205 bool recordGCBeginTime,
206 bool recordPreGCUsage,
207 bool recordPeakUsage,
208 bool recordPostGCUsage,
209 bool recordAccumulatedGCTime,
210 bool recordGCEndTime,
211 bool countCollection);
213 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
214 ~TraceMemoryManagerStats();
215 };
217 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP