1 /*
2 * Copyright (c) 2003, 2018, 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 #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 MemoryPool* _metaspace_pool;
77 static MemoryPool* _compressed_class_pool;
78
79 static void add_generation_memory_pool(Generation* gen,
80 GCMemoryManager* major_mgr,
81 GCMemoryManager* minor_mgr);
82 static void add_generation_memory_pool(Generation* gen,
83 GCMemoryManager* major_mgr) {
84 add_generation_memory_pool(gen, major_mgr, NULL);
85 }
86
87
88 static void add_psYoung_memory_pool(PSYoungGen* gen,
89 GCMemoryManager* major_mgr,
90 GCMemoryManager* minor_mgr);
91 static void add_psOld_memory_pool(PSOldGen* gen,
92 GCMemoryManager* mgr);
93
94 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
95 GCMemoryManager* major_mgr,
96 GCMemoryManager* minor_mgr);
97 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
98 GCMemoryManager* major_mgr,
99 GCMemoryManager* minor_mgr);
100
101 static MemoryPool* add_space(ContiguousSpace* space,
102 const char* name,
103 bool is_heap,
104 size_t max_size,
105 bool support_usage_threshold);
106 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
107 const char* name,
108 bool is_heap,
109 size_t max_size,
110 bool support_usage_threshold);
111 static MemoryPool* add_gen(Generation* gen,
112 const char* name,
113 bool is_heap,
114 bool support_usage_threshold);
115 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
116 const char* name,
117 bool is_heap,
118 size_t max_size,
119 bool support_usage_threshold);
120
121 static void add_gen_collected_heap_info(GenCollectedHeap* heap);
122 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
123 static void add_g1_heap_info(G1CollectedHeap* g1h);
124
125 public:
126 static void set_universe_heap(CollectedHeap* heap);
127 static void add_code_heap_memory_pool(CodeHeap* heap);
128 static void add_metaspace_memory_pools();
129
130 static MemoryPool* get_memory_pool(instanceHandle pool);
131 static MemoryManager* get_memory_manager(instanceHandle mgr);
132
133 static const int num_memory_pools() {
134 return _pools_list->length();
135 }
136 static const int num_memory_managers() {
137 return _managers_list->length();
138 }
139
140 static MemoryPool* get_memory_pool(int index) {
141 return _pools_list->at(index);
142 }
143
144 static MemoryManager* get_memory_manager(int index) {
145 return _managers_list->at(index);
146 }
147
148 static void track_memory_usage();
149 static void track_code_cache_memory_usage() {
150 track_memory_pool_usage(_code_heap_pool);
151 }
152 static void track_metaspace_memory_usage() {
153 track_memory_pool_usage(_metaspace_pool);
154 }
155 static void track_compressed_class_memory_usage() {
156 track_memory_pool_usage(_compressed_class_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 GCCause::Cause cause,
167 bool allMemoryPoolsAffected);
168
169
170 static void oops_do(OopClosure* f);
171
172 static bool get_verbose() { return PrintGC; }
173 static bool set_verbose(bool verbose);
174
175 // Create an instance of java/lang/management/MemoryUsage
176 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
177
178 static const GCMemoryManager* get_minor_gc_manager() {
179 return _minor_gc_manager;
180 }
181
182 static const GCMemoryManager* get_major_gc_manager() {
183 return _major_gc_manager;
184 }
185 };
186
187 class TraceMemoryManagerStats : public StackObj {
188 private:
189 bool _fullGC;
190 bool _allMemoryPoolsAffected;
191 bool _recordGCBeginTime;
192 bool _recordPreGCUsage;
193 bool _recordPeakUsage;
194 bool _recordPostGCUsage;
195 bool _recordAccumulatedGCTime;
196 bool _recordGCEndTime;
197 bool _countCollection;
198 GCCause::Cause _cause;
199 public:
200 TraceMemoryManagerStats() {}
201 TraceMemoryManagerStats(bool fullGC,
202 GCCause::Cause cause,
203 bool allMemoryPoolsAffected = true,
204 bool recordGCBeginTime = true,
205 bool recordPreGCUsage = true,
206 bool recordPeakUsage = true,
207 bool recordPostGCUsage = true,
208 bool recordAccumulatedGCTime = true,
209 bool recordGCEndTime = true,
210 bool countCollection = true);
211
212 void initialize(bool fullGC,
213 GCCause::Cause cause,
214 bool allMemoryPoolsAffected,
215 bool recordGCBeginTime,
216 bool recordPreGCUsage,
217 bool recordPeakUsage,
218 bool recordPostGCUsage,
219 bool recordAccumulatedGCTime,
220 bool recordGCEndTime,
221 bool countCollection);
222
223 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
224 ~TraceMemoryManagerStats();
225 };
226
227 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP