1/*
2 * Copyright (c) 2003, 2015, 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 "gc/shared/gcCause.hpp"
29#include "gc/shared/generation.hpp"
30#include "logging/log.hpp"
31#include "memory/allocation.hpp"
32#include "runtime/handles.hpp"
33#include "services/memoryUsage.hpp"
34
35// Forward declaration
36class MemoryPool;
37class MemoryManager;
38class GCMemoryManager;
39class CollectedHeap;
40class Generation;
41class DefNewGeneration;
42class PSYoungGen;
43class PSOldGen;
44class CodeHeap;
45class ContiguousSpace;
46class CompactibleFreeListSpace;
47class GenCollectedHeap;
48class ParallelScavengeHeap;
49class G1CollectedHeap;
50
51// VM Monitoring and Management Support
52
53class MemoryService : public AllStatic {
54private:
55  enum {
56    init_pools_list_size = 10,
57    init_managers_list_size = 5,
58    init_code_heap_pools_size = 9
59  };
60
61  static GrowableArray<MemoryPool*>*    _pools_list;
62  static GrowableArray<MemoryManager*>* _managers_list;
63
64  // memory managers for minor and major GC statistics
65  static GCMemoryManager*               _major_gc_manager;
66  static GCMemoryManager*               _minor_gc_manager;
67
68  // memory manager and code heap pools for the CodeCache
69  static MemoryManager*                 _code_cache_manager;
70  static GrowableArray<MemoryPool*>*    _code_heap_pools;
71
72  static MemoryPool*                    _metaspace_pool;
73  static MemoryPool*                    _compressed_class_pool;
74
75  static void add_generation_memory_pool(Generation* gen,
76                                         MemoryManager* major_mgr,
77                                         MemoryManager* minor_mgr);
78  static void add_generation_memory_pool(Generation* gen,
79                                         MemoryManager* major_mgr) {
80    add_generation_memory_pool(gen, major_mgr, NULL);
81  }
82
83
84  static void add_psYoung_memory_pool(PSYoungGen* young_gen,
85                                      MemoryManager* major_mgr,
86                                      MemoryManager* minor_mgr);
87  static void add_psOld_memory_pool(PSOldGen* old_gen,
88                                    MemoryManager* mgr);
89
90  static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
91                                         MemoryManager* major_mgr,
92                                         MemoryManager* minor_mgr);
93  static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
94                                       MemoryManager* mgr);
95
96  static MemoryPool* add_space(ContiguousSpace* space,
97                               const char* name,
98                               bool is_heap,
99                               size_t max_size,
100                               bool support_usage_threshold);
101  static MemoryPool* add_survivor_spaces(DefNewGeneration* young_gen,
102                                         const char* name,
103                                         bool is_heap,
104                                         size_t max_size,
105                                         bool support_usage_threshold);
106  static MemoryPool* add_gen(Generation* gen,
107                             const char* name,
108                             bool is_heap,
109                             bool support_usage_threshold);
110  static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
111                                   const char* name,
112                                   bool is_heap,
113                                   size_t max_size,
114                                   bool support_usage_threshold);
115
116  static void add_gen_collected_heap_info(GenCollectedHeap* heap);
117  static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
118  static void add_g1_heap_info(G1CollectedHeap* g1h);
119
120public:
121  static void set_universe_heap(CollectedHeap* heap);
122  static void add_code_heap_memory_pool(CodeHeap* heap, const char* name);
123  static void add_metaspace_memory_pools();
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 of all CodeCache memory pools
146    for (int i = 0; i < _code_heap_pools->length(); ++i) {
147      track_memory_pool_usage(_code_heap_pools->at(i));
148    }
149  }
150  static void track_metaspace_memory_usage() {
151    track_memory_pool_usage(_metaspace_pool);
152  }
153  static void track_compressed_class_memory_usage() {
154    track_memory_pool_usage(_compressed_class_pool);
155  }
156  static void track_memory_pool_usage(MemoryPool* pool);
157
158  static void gc_begin(bool fullGC, bool recordGCBeginTime,
159                       bool recordAccumulatedGCTime,
160                       bool recordPreGCUsage, bool recordPeakUsage);
161  static void gc_end(bool fullGC, bool recordPostGCUsage,
162                     bool recordAccumulatedGCTime,
163                     bool recordGCEndTime, bool countCollection,
164                     GCCause::Cause cause);
165
166  static void oops_do(OopClosure* f);
167
168  static bool get_verbose() { return log_is_enabled(Info, gc); }
169  static bool set_verbose(bool verbose);
170
171  // Create an instance of java/lang/management/MemoryUsage
172  static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
173
174  static const GCMemoryManager* get_minor_gc_manager() {
175      return _minor_gc_manager;
176  }
177
178  static const GCMemoryManager* get_major_gc_manager() {
179      return _major_gc_manager;
180  }
181};
182
183class TraceMemoryManagerStats : public StackObj {
184private:
185  bool         _fullGC;
186  bool         _recordGCBeginTime;
187  bool         _recordPreGCUsage;
188  bool         _recordPeakUsage;
189  bool         _recordPostGCUsage;
190  bool         _recordAccumulatedGCTime;
191  bool         _recordGCEndTime;
192  bool         _countCollection;
193  GCCause::Cause _cause;
194public:
195  TraceMemoryManagerStats() {}
196  TraceMemoryManagerStats(bool fullGC,
197                          GCCause::Cause cause,
198                          bool recordGCBeginTime = true,
199                          bool recordPreGCUsage = true,
200                          bool recordPeakUsage = true,
201                          bool recordPostGCUsage = true,
202                          bool recordAccumulatedGCTime = true,
203                          bool recordGCEndTime = true,
204                          bool countCollection = true);
205
206  void initialize(bool fullGC,
207                  GCCause::Cause cause,
208                  bool recordGCBeginTime,
209                  bool recordPreGCUsage,
210                  bool recordPeakUsage,
211                  bool recordPostGCUsage,
212                  bool recordAccumulatedGCTime,
213                  bool recordGCEndTime,
214                  bool countCollection);
215
216  TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
217  ~TraceMemoryManagerStats();
218};
219
220#endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP
221