1 /*
2 * Copyright (c) 2003, 2019, 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 class ShenandoahHeap;
50
51 // VM Monitoring and Management Support
52
53 class MemoryService : public AllStatic {
54 private:
55 enum {
56 init_pools_list_size = 10,
57 init_managers_list_size = 5
58 };
59
60 // index for minor and major generations
61 enum {
62 minor = 0,
63 major = 1,
64 n_gens = 2
65 };
66
67 static GrowableArray<MemoryPool*>* _pools_list;
68 static GrowableArray<MemoryManager*>* _managers_list;
69
70 // memory managers for minor and major GC statistics
71 static GCMemoryManager* _major_gc_manager;
72 static GCMemoryManager* _minor_gc_manager;
73
74 // Code heap memory pool
75 static MemoryPool* _code_heap_pool;
76
77 static MemoryPool* _metaspace_pool;
78 static MemoryPool* _compressed_class_pool;
79
80 static void add_generation_memory_pool(Generation* gen,
81 GCMemoryManager* major_mgr,
82 GCMemoryManager* minor_mgr);
83 static void add_generation_memory_pool(Generation* gen,
84 GCMemoryManager* major_mgr) {
85 add_generation_memory_pool(gen, major_mgr, NULL);
86 }
87
88
89 static void add_psYoung_memory_pool(PSYoungGen* gen,
90 GCMemoryManager* major_mgr,
91 GCMemoryManager* minor_mgr);
92 static void add_psOld_memory_pool(PSOldGen* gen,
93 GCMemoryManager* mgr);
94
95 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
96 GCMemoryManager* major_mgr,
97 GCMemoryManager* minor_mgr);
98 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
99 GCMemoryManager* major_mgr,
100 GCMemoryManager* minor_mgr);
101
102 static MemoryPool* add_space(ContiguousSpace* space,
103 const char* name,
104 bool is_heap,
105 size_t max_size,
106 bool support_usage_threshold);
107 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
108 const char* name,
109 bool is_heap,
110 size_t max_size,
111 bool support_usage_threshold);
112 static MemoryPool* add_gen(Generation* gen,
113 const char* name,
114 bool is_heap,
115 bool support_usage_threshold);
116 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
117 const char* name,
118 bool is_heap,
119 size_t max_size,
120 bool support_usage_threshold);
121
122 static void add_gen_collected_heap_info(GenCollectedHeap* heap);
123 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
124 static void add_g1_heap_info(G1CollectedHeap* g1h);
125 static void add_shenandoah_heap_info(ShenandoahHeap* heap);
126
127 public:
128 static void set_universe_heap(CollectedHeap* heap);
129 static void add_code_heap_memory_pool(CodeHeap* heap);
130 static void add_metaspace_memory_pools();
131
132 static MemoryPool* get_memory_pool(instanceHandle pool);
133 static MemoryManager* get_memory_manager(instanceHandle mgr);
134
135 static const int num_memory_pools() {
136 return _pools_list->length();
137 }
138 static const int num_memory_managers() {
139 return _managers_list->length();
140 }
141
142 static MemoryPool* get_memory_pool(int index) {
143 return _pools_list->at(index);
144 }
145
146 static MemoryManager* get_memory_manager(int index) {
147 return _managers_list->at(index);
148 }
149
150 static void track_memory_usage();
151 static void track_code_cache_memory_usage() {
152 track_memory_pool_usage(_code_heap_pool);
153 }
154 static void track_metaspace_memory_usage() {
155 track_memory_pool_usage(_metaspace_pool);
156 }
157 static void track_compressed_class_memory_usage() {
158 track_memory_pool_usage(_compressed_class_pool);
159 }
160 static void track_memory_pool_usage(MemoryPool* pool);
161
162 static void gc_begin(bool fullGC, bool recordGCBeginTime,
163 bool recordAccumulatedGCTime,
164 bool recordPreGCUsage, bool recordPeakUsage);
165 static void gc_end(bool fullGC, bool recordPostGCUsage,
166 bool recordAccumulatedGCTime,
167 bool recordGCEndTime, bool countCollection,
168 GCCause::Cause cause,
169 bool allMemoryPoolsAffected);
170
171
172 static void oops_do(OopClosure* f);
173
174 static bool get_verbose() { return PrintGC; }
175 static bool set_verbose(bool verbose);
176
177 // Create an instance of java/lang/management/MemoryUsage
178 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
179
180 static const GCMemoryManager* get_minor_gc_manager() {
181 return _minor_gc_manager;
182 }
183
184 static const GCMemoryManager* get_major_gc_manager() {
185 return _major_gc_manager;
186 }
187 };
188
189 class TraceMemoryManagerStats : public StackObj {
190 private:
191 bool _fullGC;
192 bool _allMemoryPoolsAffected;
193 bool _recordGCBeginTime;
194 bool _recordPreGCUsage;
195 bool _recordPeakUsage;
196 bool _recordPostGCUsage;
197 bool _recordAccumulatedGCTime;
198 bool _recordGCEndTime;
199 bool _countCollection;
200 GCCause::Cause _cause;
201 public:
202 TraceMemoryManagerStats() {}
203 TraceMemoryManagerStats(bool fullGC,
204 GCCause::Cause cause,
205 bool allMemoryPoolsAffected = true,
206 bool recordGCBeginTime = true,
207 bool recordPreGCUsage = true,
208 bool recordPeakUsage = true,
209 bool recordPostGCUsage = true,
210 bool recordAccumulatedGCTime = true,
211 bool recordGCEndTime = true,
212 bool countCollection = true);
213
214 void initialize(bool fullGC,
215 GCCause::Cause cause,
216 bool allMemoryPoolsAffected,
217 bool recordGCBeginTime,
218 bool recordPreGCUsage,
219 bool recordPeakUsage,
220 bool recordPostGCUsage,
221 bool recordAccumulatedGCTime,
222 bool recordGCEndTime,
223 bool countCollection);
224
225 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
226 ~TraceMemoryManagerStats();
227 };
228
229 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP