1 /*
2 * Copyright (c) 2003, 2017, 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
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 init_code_heap_pools_size = 9
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 // memory manager and code heap pools for the CodeCache
69 static MemoryManager* _code_cache_manager;
70 static GrowableArray<MemoryPool*>* _code_heap_pools;
71
72 static MemoryPool* _metaspace_pool;
73 static MemoryPool* _compressed_class_pool;
74
75 public:
76 static void set_universe_heap(CollectedHeap* heap);
77 static void add_code_heap_memory_pool(CodeHeap* heap, const char* name);
78 static void add_metaspace_memory_pools();
79
80 static MemoryPool* get_memory_pool(instanceHandle pool);
81 static MemoryManager* get_memory_manager(instanceHandle mgr);
82
83 static const int num_memory_pools() {
84 return _pools_list->length();
85 }
86 static const int num_memory_managers() {
87 return _managers_list->length();
88 }
89
90 static MemoryPool* get_memory_pool(int index) {
91 return _pools_list->at(index);
92 }
93
94 static MemoryManager* get_memory_manager(int index) {
95 return _managers_list->at(index);
96 }
97
98 static void track_memory_usage();
99 static void track_code_cache_memory_usage() {
100 // Track memory pool usage of all CodeCache memory pools
101 for (int i = 0; i < _code_heap_pools->length(); ++i) {
102 track_memory_pool_usage(_code_heap_pools->at(i));
103 }
104 }
105 static void track_metaspace_memory_usage() {
106 track_memory_pool_usage(_metaspace_pool);
107 }
108 static void track_compressed_class_memory_usage() {
109 track_memory_pool_usage(_compressed_class_pool);
110 }
111 static void track_memory_pool_usage(MemoryPool* pool);
112
113 static void gc_begin(bool fullGC, bool recordGCBeginTime,
114 bool recordAccumulatedGCTime,
115 bool recordPreGCUsage, bool recordPeakUsage);
116 static void gc_end(bool fullGC, bool recordPostGCUsage,
117 bool recordAccumulatedGCTime,
118 bool recordGCEndTime, bool countCollection,
119 GCCause::Cause cause);
120
121 static void oops_do(OopClosure* f);
122
123 static bool get_verbose() { return log_is_enabled(Info, gc); }
124 static bool set_verbose(bool verbose);
125
126 // Create an instance of java/lang/management/MemoryUsage
127 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
128
129 static const GCMemoryManager* get_minor_gc_manager() {
130 return _minor_gc_manager;
131 }
132
133 static const GCMemoryManager* get_major_gc_manager() {
134 return _major_gc_manager;
135 }
136 };
137
138 class TraceMemoryManagerStats : public StackObj {
139 private:
140 bool _fullGC;
141 bool _recordGCBeginTime;
142 bool _recordPreGCUsage;
143 bool _recordPeakUsage;
144 bool _recordPostGCUsage;
145 bool _recordAccumulatedGCTime;
146 bool _recordGCEndTime;
147 bool _countCollection;
148 GCCause::Cause _cause;
149 public:
150 TraceMemoryManagerStats() {}
151 TraceMemoryManagerStats(bool fullGC,
152 GCCause::Cause cause,
153 bool recordGCBeginTime = true,
154 bool recordPreGCUsage = true,
155 bool recordPeakUsage = true,
156 bool recordPostGCUsage = true,
157 bool recordAccumulatedGCTime = true,
158 bool recordGCEndTime = true,
159 bool countCollection = true);
160
161 void initialize(bool fullGC,
162 GCCause::Cause cause,
163 bool recordGCBeginTime,
164 bool recordPreGCUsage,
165 bool recordPeakUsage,
166 bool recordPostGCUsage,
167 bool recordAccumulatedGCTime,
168 bool recordGCEndTime,
169 bool countCollection);
170
171 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
172 ~TraceMemoryManagerStats();
173 };
174
175 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP