1 /*
2 * Copyright (c) 2003, 2015, 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 "gc/shared/gcCause.hpp"
29 #include "gc/shared/generation.hpp"
30 #include "logging/log.hpp"
31 #include "memory/allocation.hpp"
32 #include "runtime/handles.hpp"
33 #include "services/memoryUsage.hpp"
34
35 // Forward declaration
36 class MemoryPool;
37 class MemoryManager;
38 class GCMemoryManager;
39 class CollectedHeap;
40 class Generation;
41 class DefNewGeneration;
42 class PSYoungGen;
43 class PSOldGen;
44 class CodeHeap;
45 class ContiguousSpace;
46 class CompactibleFreeListSpace;
47 class GenCollectedHeap;
48 class ParallelScavengeHeap;
49 class G1CollectedHeap;
50 class ShenandoahHeap;
51
52 // VM Monitoring and Management Support
53
54 class MemoryService : public AllStatic {
55 private:
56 enum {
57 init_pools_list_size = 10,
58 init_managers_list_size = 5,
59 init_code_heap_pools_size = 9
60 };
61
62 static GrowableArray<MemoryPool*>* _pools_list;
63 static GrowableArray<MemoryManager*>* _managers_list;
64
65 // memory managers for minor and major GC statistics
66 static GCMemoryManager* _major_gc_manager;
67 static GCMemoryManager* _minor_gc_manager;
68
69 // memory manager and code heap pools for the CodeCache
70 static MemoryManager* _code_cache_manager;
71 static GrowableArray<MemoryPool*>* _code_heap_pools;
72
73 static MemoryPool* _metaspace_pool;
74 static MemoryPool* _compressed_class_pool;
75
76 static void add_generation_memory_pool(Generation* gen,
77 MemoryManager* major_mgr,
78 MemoryManager* minor_mgr);
79 static void add_generation_memory_pool(Generation* gen,
80 MemoryManager* major_mgr) {
81 add_generation_memory_pool(gen, major_mgr, NULL);
82 }
83
84
85 static void add_psYoung_memory_pool(PSYoungGen* young_gen,
86 MemoryManager* major_mgr,
87 MemoryManager* minor_mgr);
88 static void add_psOld_memory_pool(PSOldGen* old_gen,
89 MemoryManager* mgr);
90
91 static void add_g1YoungGen_memory_pool(G1CollectedHeap* g1h,
92 MemoryManager* major_mgr,
93 MemoryManager* minor_mgr);
94 static void add_g1OldGen_memory_pool(G1CollectedHeap* g1h,
95 MemoryManager* mgr);
96
97 static void add_shenandoah_memory_pool(ShenandoahHeap* pgc,
98 MemoryManager* mgr,
99 bool global);
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* young_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 static void add_shenandoah_heap_info(ShenandoahHeap* heap);
125
126 public:
127 static void set_universe_heap(CollectedHeap* heap);
128 static void add_code_heap_memory_pool(CodeHeap* heap, const char* name);
129 static void add_metaspace_memory_pools();
130
131 static MemoryPool* get_memory_pool(instanceHandle pool);
132 static MemoryManager* get_memory_manager(instanceHandle mgr);
133
134 static const int num_memory_pools() {
135 return _pools_list->length();
136 }
137 static const int num_memory_managers() {
138 return _managers_list->length();
139 }
140
141 static MemoryPool* get_memory_pool(int index) {
142 return _pools_list->at(index);
143 }
144
145 static MemoryManager* get_memory_manager(int index) {
146 return _managers_list->at(index);
147 }
148
149 static void track_memory_usage();
150 static void track_code_cache_memory_usage() {
151 // Track memory pool usage of all CodeCache memory pools
152 for (int i = 0; i < _code_heap_pools->length(); ++i) {
153 track_memory_pool_usage(_code_heap_pools->at(i));
154 }
155 }
156 static void track_metaspace_memory_usage() {
157 track_memory_pool_usage(_metaspace_pool);
158 }
159 static void track_compressed_class_memory_usage() {
160 track_memory_pool_usage(_compressed_class_pool);
161 }
162 static void track_memory_pool_usage(MemoryPool* pool);
163
164 static void gc_begin(bool fullGC, bool recordGCBeginTime,
165 bool recordAccumulatedGCTime,
166 bool recordPreGCUsage, bool recordPeakUsage);
167 static void gc_end(bool fullGC, bool recordPostGCUsage,
168 bool recordAccumulatedGCTime,
169 bool recordGCEndTime, bool countCollection,
170 GCCause::Cause cause);
171
172 static void oops_do(OopClosure* f);
173
174 static bool get_verbose() { return log_is_enabled(Info, gc); }
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 _recordGCBeginTime;
193 bool _recordPreGCUsage;
194 bool _recordPeakUsage;
195 bool _recordPostGCUsage;
196 bool _recordAccumulatedGCTime;
197 bool _recordGCEndTime;
198 bool _countCollection;
199 GCCause::Cause _cause;
200 public:
201 TraceMemoryManagerStats() {}
202 TraceMemoryManagerStats(bool fullGC,
203 GCCause::Cause cause,
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 recordGCBeginTime,
215 bool recordPreGCUsage,
216 bool recordPeakUsage,
217 bool recordPostGCUsage,
218 bool recordAccumulatedGCTime,
219 bool recordGCEndTime,
220 bool countCollection);
221
222 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
223 ~TraceMemoryManagerStats();
224 };
225
226 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP