Sun, 03 Feb 2013 22:28:08 +0400
8002048: Protocol to discovery of manageable Java processes on a network
Summary: Introduce a protocol to discover manageble Java instances across a network subnet, JDP
Reviewed-by: sla, dfuchs
1 /*
2 * Copyright (c) 2003, 2012, 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.
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23 */
25 #ifndef SHARE_VM_SERVICES_MEMORYSERVICE_HPP
26 #define SHARE_VM_SERVICES_MEMORYSERVICE_HPP
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"
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;
50 // VM Monitoring and Management Support
52 class MemoryService : public AllStatic {
53 private:
54 enum {
55 init_pools_list_size = 10,
56 init_managers_list_size = 5
57 };
59 // index for minor and major generations
60 enum {
61 minor = 0,
62 major = 1,
63 n_gens = 2
64 };
66 static GrowableArray<MemoryPool*>* _pools_list;
67 static GrowableArray<MemoryManager*>* _managers_list;
69 // memory managers for minor and major GC statistics
70 static GCMemoryManager* _major_gc_manager;
71 static GCMemoryManager* _minor_gc_manager;
73 // Code heap memory pool
74 static MemoryPool* _code_heap_pool;
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 }
85 static void add_psYoung_memory_pool(PSYoungGen* gen,
86 MemoryManager* major_mgr,
87 MemoryManager* minor_mgr);
88 static void add_psOld_memory_pool(PSOldGen* gen,
89 MemoryManager* mgr);
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);
97 static MemoryPool* add_space(ContiguousSpace* space,
98 const char* name,
99 bool is_heap,
100 size_t max_size,
101 bool support_usage_threshold);
102 static MemoryPool* add_survivor_spaces(DefNewGeneration* gen,
103 const char* name,
104 bool is_heap,
105 size_t max_size,
106 bool support_usage_threshold);
107 static MemoryPool* add_gen(Generation* gen,
108 const char* name,
109 bool is_heap,
110 bool support_usage_threshold);
111 static MemoryPool* add_cms_space(CompactibleFreeListSpace* space,
112 const char* name,
113 bool is_heap,
114 size_t max_size,
115 bool support_usage_threshold);
117 static void add_gen_collected_heap_info(GenCollectedHeap* heap);
118 static void add_parallel_scavenge_heap_info(ParallelScavengeHeap* heap);
119 static void add_g1_heap_info(G1CollectedHeap* g1h);
121 public:
122 static void set_universe_heap(CollectedHeap* heap);
123 static void add_code_heap_memory_pool(CodeHeap* heap);
125 static MemoryPool* get_memory_pool(instanceHandle pool);
126 static MemoryManager* get_memory_manager(instanceHandle mgr);
128 static const int num_memory_pools() {
129 return _pools_list->length();
130 }
131 static const int num_memory_managers() {
132 return _managers_list->length();
133 }
135 static MemoryPool* get_memory_pool(int index) {
136 return _pools_list->at(index);
137 }
139 static MemoryManager* get_memory_manager(int index) {
140 return _managers_list->at(index);
141 }
143 static void track_memory_usage();
144 static void track_code_cache_memory_usage() {
145 track_memory_pool_usage(_code_heap_pool);
146 }
147 static void track_memory_pool_usage(MemoryPool* pool);
149 static void gc_begin(bool fullGC, bool recordGCBeginTime,
150 bool recordAccumulatedGCTime,
151 bool recordPreGCUsage, bool recordPeakUsage);
152 static void gc_end(bool fullGC, bool recordPostGCUsage,
153 bool recordAccumulatedGCTime,
154 bool recordGCEndTime, bool countCollection,
155 GCCause::Cause cause);
158 static void oops_do(OopClosure* f);
160 static bool get_verbose() { return PrintGC; }
161 static bool set_verbose(bool verbose);
163 // Create an instance of java/lang/management/MemoryUsage
164 static Handle create_MemoryUsage_obj(MemoryUsage usage, TRAPS);
166 static const GCMemoryManager* get_minor_gc_manager() {
167 return _minor_gc_manager;
168 }
170 static const GCMemoryManager* get_major_gc_manager() {
171 return _major_gc_manager;
172 }
173 };
175 class TraceMemoryManagerStats : public StackObj {
176 private:
177 bool _fullGC;
178 bool _recordGCBeginTime;
179 bool _recordPreGCUsage;
180 bool _recordPeakUsage;
181 bool _recordPostGCUsage;
182 bool _recordAccumulatedGCTime;
183 bool _recordGCEndTime;
184 bool _countCollection;
185 GCCause::Cause _cause;
186 public:
187 TraceMemoryManagerStats() {}
188 TraceMemoryManagerStats(bool fullGC,
189 GCCause::Cause cause,
190 bool recordGCBeginTime = true,
191 bool recordPreGCUsage = true,
192 bool recordPeakUsage = true,
193 bool recordPostGCUsage = true,
194 bool recordAccumulatedGCTime = true,
195 bool recordGCEndTime = true,
196 bool countCollection = true);
198 void initialize(bool fullGC,
199 GCCause::Cause cause,
200 bool recordGCBeginTime,
201 bool recordPreGCUsage,
202 bool recordPeakUsage,
203 bool recordPostGCUsage,
204 bool recordAccumulatedGCTime,
205 bool recordGCEndTime,
206 bool countCollection);
208 TraceMemoryManagerStats(Generation::Name kind, GCCause::Cause cause);
209 ~TraceMemoryManagerStats();
210 };
212 #endif // SHARE_VM_SERVICES_MEMORYSERVICE_HPP