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
26 class MemoryPool;
27 class MemoryManager;
28 class GCMemoryManager;
29 class CollectedHeap;
30 class Generation;
31 class DefNewGeneration;
32 class PSYoungGen;
33 class PSOldGen;
34 class PSPermGen;
35 class CodeHeap;
36 class ContiguousSpace;
37 class CompactibleFreeListSpace;
38 class PermanentGenerationSpec;
39 class GenCollectedHeap;
40 class ParallelScavengeHeap;
41 class CompactingPermGenGen;
42 class CMSPermGenGen;
43 class G1CollectedHeap;
44
45 // VM Monitoring and Management Support
46
47 class MemoryService : public AllStatic {
48 private:
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
124 public:
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, bool recordGCBeginTime,
153 bool recordAccumulatedGCTime,
154 bool recordPreGCUsage, bool recordPeakUsage);
155 static void gc_end(bool fullGC, bool recordPostGCUsage,
156 bool recordAccumulatedGCTime,
157 bool recordGCEndTime, bool countCollection);
158
159
160 static void oops_do(OopClosure* f);
161
162 static bool get_verbose() { return PrintGC; }
163 static bool set_verbose(bool verbose);
164
165 // Create an instance of java/lang/management/MemoryUsage
166 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
167 };
168
169 class TraceMemoryManagerStats : public StackObj {
170 private:
171 bool _fullGC;
172 bool _recordGCBeginTime;
173 bool _recordPreGCUsage;
174 bool _recordPeakUsage;
175 bool _recordPostGCUsage;
176 bool _recordAccumulatedGCTime;
177 bool _recordGCEndTime;
178 bool _countCollection;
179
180 public:
181 TraceMemoryManagerStats() {}
182 TraceMemoryManagerStats(bool fullGC,
183 bool recordGCBeginTime = true,
184 bool recordPreGCUsage = true,
185 bool recordPeakUsage = true,
186 bool recordPostGCUsage = true,
187 bool recordAccumulatedGCTime = true,
188 bool recordGCEndTime = true,
189 bool countCollection = true);
190
191 void initialize(bool fullGC,
192 bool recordGCBeginTime,
193 bool recordPreGCUsage,
194 bool recordPeakUsage,
195 bool recordPostGCUsage,
196 bool recordAccumulatedGCTime,
197 bool recordGCEndTime,
198 bool countCollection);
199
200 TraceMemoryManagerStats(Generation::Name kind);
201 ~TraceMemoryManagerStats();
202 };