rev 4210 : 8000754: NPG: Implement a MemoryPool MXBean for Metaspace

   1 /*
   2  * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
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  23  */
  24 
  25 #ifndef SHARE_VM_SERVICES_MEMORYSERVICE_HPP
  26 #define SHARE_VM_SERVICES_MEMORYSERVICE_HPP
  27 
  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"
  33 
  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;
  49 
  50 // VM Monitoring and Management Support
  51 
  52 class MemoryService : public AllStatic {
  53 private:
  54   enum {
  55     init_pools_list_size = 10,
  56     init_managers_list_size = 5
  57   };
  58 
  59   // index for minor and major generations
  60   enum {
  61     minor = 0,
  62     major = 1,
  63     n_gens = 2
  64   };
  65 
  66   static GrowableArray<MemoryPool*>*    _pools_list;
  67   static GrowableArray<MemoryManager*>* _managers_list;
  68 
  69   // memory managers for minor and major GC statistics
  70   static GCMemoryManager*               _major_gc_manager;
  71   static GCMemoryManager*               _minor_gc_manager;
  72 
  73   // Code heap memory pool
  74   static MemoryPool*                    _code_heap_pool;
  75 




  76   static void add_generation_memory_pool(Generation* gen,
  77                                          MemoryManager* major_mgr,
  78                                          MemoryManager* minor_mgr);
  79   static void add_generation_memory_pool(Generation* gen,
  80                                          MemoryManager* major_mgr) {
  81     add_generation_memory_pool(gen, major_mgr, NULL);
  82   }
  83 
  84 
  85   static void add_psYoung_memory_pool(PSYoungGen* gen,
  86                                       MemoryManager* major_mgr,
  87                                       MemoryManager* minor_mgr);
  88   static void add_psOld_memory_pool(PSOldGen* gen,
  89                                     MemoryManager* mgr);
  90 
  91   static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
  92                                          MemoryManager* major_mgr,
  93                                          MemoryManager* minor_mgr);
  94   static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
  95                                        MemoryManager* mgr);
  96 
  97   static MemoryPool* add_space(ContiguousSpace* space,
  98                                const char* name,
  99                                bool is_heap,
 100                                size_t max_size,
 101                                bool support_usage_threshold);
 102   static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
 103                                          const char* name,
 104                                          bool is_heap,
 105                                          size_t max_size,
 106                                          bool support_usage_threshold);
 107   static MemoryPool* add_gen(Generation* gen,
 108                              const char* name,
 109                              bool is_heap,
 110                              bool support_usage_threshold);
 111   static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
 112                                    const char* name,
 113                                    bool is_heap,
 114                                    size_t max_size,
 115                                    bool support_usage_threshold);
 116 
 117   static void add_gen_collected_heap_info(GenCollectedHeap* heap);
 118   static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
 119   static void add_g1_heap_info(G1CollectedHeap* g1h);
 120 
 121 public:
 122   static void set_universe_heap(CollectedHeap* heap);
 123   static void add_code_heap_memory_pool(CodeHeap* heap);

 124 
 125   static MemoryPool*    get_memory_pool(instanceHandle pool);
 126   static MemoryManager* get_memory_manager(instanceHandle mgr);
 127 
 128   static const int num_memory_pools() {
 129     return _pools_list->length();
 130   }
 131   static const int num_memory_managers() {
 132     return _managers_list->length();
 133   }
 134 
 135   static MemoryPool* get_memory_pool(int index) {
 136     return _pools_list->at(index);
 137   }
 138 
 139   static MemoryManager* get_memory_manager(int index) {
 140     return _managers_list->at(index);
 141   }
 142 
 143   static void track_memory_usage();
 144   static void track_code_cache_memory_usage() {
 145     track_memory_pool_usage(_code_heap_pool);
 146   }
 147   static void track_memory_pool_usage(MemoryPool* pool);
 148 
 149   static void gc_begin(bool fullGC, bool recordGCBeginTime,
 150                        bool recordAccumulatedGCTime,
 151                        bool recordPreGCUsage, bool recordPeakUsage);
 152   static void gc_end(bool fullGC, bool recordPostGCUsage,
 153                      bool recordAccumulatedGCTime,
 154                      bool recordGCEndTime, bool countCollection,
 155                      GCCause::Cause cause);
 156 
 157 
 158   static void oops_do(OopClosure* f);
 159 
 160   static bool get_verbose() { return PrintGC; }
 161   static bool set_verbose(bool verbose);
 162 
 163   // Create an instance of java/lang/management/MemoryUsage
 164   static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
 165 
 166   static const GCMemoryManager* get_minor_gc_manager() {
 167       return _minor_gc_manager;
 168   }
 169 
 170   static const GCMemoryManager* get_major_gc_manager() {
 171       return _major_gc_manager;
 172   }
 173 };
 174 
 175 class TraceMemoryManagerStats : public StackObj {
 176 private:
 177   bool         _fullGC;
 178   bool         _recordGCBeginTime;
 179   bool         _recordPreGCUsage;
 180   bool         _recordPeakUsage;
 181   bool         _recordPostGCUsage;
 182   bool         _recordAccumulatedGCTime;
 183   bool         _recordGCEndTime;
 184   bool         _countCollection;
 185   GCCause::Cause _cause;
 186 public:
 187   TraceMemoryManagerStats() {}
 188   TraceMemoryManagerStats(bool fullGC,
 189                           GCCause::Cause cause,
 190                           bool recordGCBeginTime = true,
 191                           bool recordPreGCUsage = true,
 192                           bool recordPeakUsage = true,
 193                           bool recordPostGCUsage = true,
 194                           bool recordAccumulatedGCTime = true,
 195                           bool recordGCEndTime = true,
 196                           bool countCollection = true);
 197 
 198   void initialize(bool fullGC,
 199                   GCCause::Cause cause,
 200                   bool recordGCBeginTime,
 201                   bool recordPreGCUsage,
 202                   bool recordPeakUsage,
 203                   bool recordPostGCUsage,
 204                   bool recordAccumulatedGCTime,
 205                   bool recordGCEndTime,
 206                   bool countCollection);
 207 
 208   TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
 209   ~TraceMemoryManagerStats();
 210 };
 211 
 212 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP
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