1 /*
2 * Copyright (c) 2003, 2010, 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 #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
33 // Forward declaration
34 class MemoryPool;
35 class MemoryManager;
36 class GCMemoryManager;
37 class CollectedHeap;
38 class Generation;
39 class DefNewGeneration;
40 class PSYoungGen;
41 class PSOldGen;
42 class PSPermGen;
43 class CodeHeap;
44 class ContiguousSpace;
45 class CompactibleFreeListSpace;
46 class PermanentGenerationSpec;
47 class GenCollectedHeap;
48 class ParallelScavengeHeap;
49 class CompactingPermGenGen;
50 class CMSPermGenGen;
51 class G1CollectedHeap;
52
53 // VM Monitoring and Management Support
54
55 class MemoryService : public AllStatic {
56 private:
57 enum {
58 init_pools_list_size = 10,
59 init_managers_list_size = 5
60 };
61
62 // index for minor and major generations
63 enum {
64 minor = 0,
65 major = 1,
66 n_gens = 2
67 };
68
69 static GrowableArray<MemoryPool*>* _pools_list;
70 static GrowableArray<MemoryManager*>* _managers_list;
71
72 // memory managers for minor and major GC statistics
73 static GCMemoryManager* _major_gc_manager;
74 static GCMemoryManager* _minor_gc_manager;
75
76 // Code heap memory pool
77 static MemoryPool* _code_heap_pool;
78
79 static void add_generation_memory_pool(Generation* gen,
80 MemoryManager* major_mgr,
81 MemoryManager* minor_mgr);
82 static void add_generation_memory_pool(Generation* gen,
83 MemoryManager* major_mgr) {
84 add_generation_memory_pool(gen, major_mgr, NULL);
85 }
86
87 static void add_compact_perm_gen_memory_pool(CompactingPermGenGen* perm_gen,
88 MemoryManager* mgr);
89 static void add_cms_perm_gen_memory_pool(CMSPermGenGen* perm_gen,
90 MemoryManager* mgr);
91
92 static void add_psYoung_memory_pool(PSYoungGen* gen,
93 MemoryManager* major_mgr,
94 MemoryManager* minor_mgr);
95 static void add_psOld_memory_pool(PSOldGen* gen,
96 MemoryManager* mgr);
97 static void add_psPerm_memory_pool(PSPermGen* perm,
98 MemoryManager* mgr);
99
100 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
101 MemoryManager* major_mgr,
102 MemoryManager* minor_mgr);
103 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
104 MemoryManager* mgr);
105 static void add_g1PermGen_memory_pool(G1CollectedHeap* g1h,
106 MemoryManager* mgr);
107
108 static MemoryPool* add_space(ContiguousSpace* space,
109 const char* name,
110 bool is_heap,
111 size_t max_size,
112 bool support_usage_threshold);
113 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
114 const char* name,
115 bool is_heap,
116 size_t max_size,
117 bool support_usage_threshold);
118 static MemoryPool* add_gen(Generation* gen,
119 const char* name,
120 bool is_heap,
121 bool support_usage_threshold);
122 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
123 const char* name,
124 bool is_heap,
125 size_t max_size,
126 bool support_usage_threshold);
127
128 static void add_gen_collected_heap_info(GenCollectedHeap* heap);
129 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
130 static void add_g1_heap_info(G1CollectedHeap* g1h);
131
132 public:
133 static void set_universe_heap(CollectedHeap* heap);
134 static void add_code_heap_memory_pool(CodeHeap* heap);
135
136 static MemoryPool* get_memory_pool(instanceHandle pool);
137 static MemoryManager* get_memory_manager(instanceHandle mgr);
138
139 static const int num_memory_pools() {
140 return _pools_list->length();
141 }
142 static const int num_memory_managers() {
143 return _managers_list->length();
144 }
145
146 static MemoryPool* get_memory_pool(int index) {
147 return _pools_list->at(index);
148 }
149
150 static MemoryManager* get_memory_manager(int index) {
151 return _managers_list->at(index);
152 }
153
154 static void track_memory_usage();
155 static void track_code_cache_memory_usage() {
156 track_memory_pool_usage(_code_heap_pool);
157 }
158 static void track_memory_pool_usage(MemoryPool* pool);
159
160 static void gc_begin(bool fullGC, bool recordGCBeginTime,
161 bool recordAccumulatedGCTime,
162 bool recordPreGCUsage, bool recordPeakUsage);
163 static void gc_end(bool fullGC, bool recordPostGCUsage,
164 bool recordAccumulatedGCTime,
165 bool recordGCEndTime, bool countCollection);
166
167
168 static void oops_do(OopClosure* f);
169
170 static bool get_verbose() { return PrintGC; }
171 static bool set_verbose(bool verbose);
172
173 // Create an instance of java/lang/management/MemoryUsage
174 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
175 };
176
177 class TraceMemoryManagerStats : public StackObj {
178 private:
179 bool _fullGC;
180 bool _recordGCBeginTime;
181 bool _recordPreGCUsage;
182 bool _recordPeakUsage;
183 bool _recordPostGCUsage;
184 bool _recordAccumulatedGCTime;
185 bool _recordGCEndTime;
186 bool _countCollection;
187
188 public:
189 TraceMemoryManagerStats() {}
190 TraceMemoryManagerStats(bool fullGC,
191 bool recordGCBeginTime = true,
192 bool recordPreGCUsage = true,
193 bool recordPeakUsage = true,
194 bool recordPostGCUsage = true,
195 bool recordAccumulatedGCTime = true,
196 bool recordGCEndTime = true,
197 bool countCollection = true);
198
199 void initialize(bool fullGC,
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);
209 ~TraceMemoryManagerStats();
210 };
211
212 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP