memoryService.hpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 2003, 2006, 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.
22 *
23 */
24
25// Forward declaration
26class MemoryPool;
27class MemoryManager;
28class GCMemoryManager;
29class CollectedHeap;
30class Generation;
31class DefNewGeneration;
32class PSYoungGen;
33class PSOldGen;
34class PSPermGen;
35class CodeHeap;
36class ContiguousSpace;
37class CompactibleFreeListSpace;
38class PermanentGenerationSpec;
39class GenCollectedHeap;
40class ParallelScavengeHeap;
41class CompactingPermGenGen;
42class CMSPermGenGen;
43class G1CollectedHeap;
44
45// VM Monitoring and Management Support
46
47class MemoryService : public AllStatic {
48private:
49  enum {
50    init_pools_list_size = 10,
51    init_managers_list_size = 5
52  };
53
54  // index for minor and major generations
55  enum {
56    minor = 0,
57    major = 1,
58    n_gens = 2
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  // Code heap memory pool
69  static MemoryPool*                    _code_heap_pool;
70
71  static void add_generation_memory_pool(Generation* gen,
72                                         MemoryManager* major_mgr,
73                                         MemoryManager* minor_mgr);
74  static void add_generation_memory_pool(Generation* gen,
75                                         MemoryManager* major_mgr) {
76    add_generation_memory_pool(gen, major_mgr, NULL);
77  }
78
79  static void add_compact_perm_gen_memory_pool(CompactingPermGenGen* perm_gen,
80                                               MemoryManager* mgr);
81  static void add_cms_perm_gen_memory_pool(CMSPermGenGen* perm_gen,
82                                           MemoryManager* mgr);
83
84  static void add_psYoung_memory_pool(PSYoungGen* gen,
85                                      MemoryManager* major_mgr,
86                                      MemoryManager* minor_mgr);
87  static void add_psOld_memory_pool(PSOldGen* gen,
88                                    MemoryManager* mgr);
89  static void add_psPerm_memory_pool(PSPermGen* perm,
90                                     MemoryManager* mgr);
91
92  static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
93                                         MemoryManager* major_mgr,
94                                         MemoryManager* minor_mgr);
95  static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
96                                       MemoryManager* mgr);
97  static void add_g1PermGen_memory_pool(G1CollectedHeap* g1h,
98                                        MemoryManager* mgr);
99
100  static MemoryPool* add_space(ContiguousSpace* space,
101                               const char* name,
102                               bool is_heap,
103                               size_t max_size,
104                               bool support_usage_threshold);
105  static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
106                                         const char* name,
107                                         bool is_heap,
108                                         size_t max_size,
109                                         bool support_usage_threshold);
110  static MemoryPool* add_gen(Generation* gen,
111                             const char* name,
112                             bool is_heap,
113                             bool support_usage_threshold);
114  static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
115                                   const char* name,
116                                   bool is_heap,
117                                   size_t max_size,
118                                   bool support_usage_threshold);
119
120  static void add_gen_collected_heap_info(GenCollectedHeap* heap);
121  static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
122  static void add_g1_heap_info(G1CollectedHeap* g1h);
123
124public:
125  static void set_universe_heap(CollectedHeap* heap);
126  static void add_code_heap_memory_pool(CodeHeap* heap);
127
128  static MemoryPool*    get_memory_pool(instanceHandle pool);
129  static MemoryManager* get_memory_manager(instanceHandle mgr);
130
131  static const int num_memory_pools() {
132    return _pools_list->length();
133  }
134  static const int num_memory_managers() {
135    return _managers_list->length();
136  }
137
138  static MemoryPool* get_memory_pool(int index) {
139    return _pools_list->at(index);
140  }
141
142  static MemoryManager* get_memory_manager(int index) {
143    return _managers_list->at(index);
144  }
145
146  static void track_memory_usage();
147  static void track_code_cache_memory_usage() {
148    track_memory_pool_usage(_code_heap_pool);
149  }
150  static void track_memory_pool_usage(MemoryPool* pool);
151
152  static void gc_begin(bool fullGC);
153  static void gc_end(bool fullGC);
154
155  static void oops_do(OopClosure* f);
156
157  static bool get_verbose() { return PrintGC; }
158  static bool set_verbose(bool verbose);
159
160  // Create an instance of java/lang/management/MemoryUsage
161  static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
162};
163
164class TraceMemoryManagerStats : public StackObj {
165private:
166  bool         _fullGC;
167public:
168  TraceMemoryManagerStats(bool fullGC);
169  TraceMemoryManagerStats(Generation::Name kind);
170  ~TraceMemoryManagerStats();
171};
172