Fri, 11 Feb 2011 14:15:16 +0100
7018257: jmm_DumpThreads allocates into permgen
Summary: Don't allocate in permgen
Reviewed-by: ysr, sla
duke@435 | 1 | /* |
stefank@2314 | 2 | * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_SERVICES_MEMORYMANAGER_HPP |
stefank@2314 | 26 | #define SHARE_VM_SERVICES_MEMORYMANAGER_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "memory/allocation.hpp" |
stefank@2314 | 29 | #include "runtime/timer.hpp" |
stefank@2314 | 30 | #include "services/memoryUsage.hpp" |
stefank@2314 | 31 | |
duke@435 | 32 | // A memory manager is responsible for managing one or more memory pools. |
duke@435 | 33 | // The garbage collector is one type of memory managers responsible |
duke@435 | 34 | // for reclaiming memory occupied by unreachable objects. A Java virtual |
duke@435 | 35 | // machine may have one or more memory managers. It may |
duke@435 | 36 | // add or remove memory managers during execution. |
duke@435 | 37 | // A memory pool can be managed by more than one memory managers. |
duke@435 | 38 | |
duke@435 | 39 | class MemoryPool; |
duke@435 | 40 | class GCMemoryManager; |
duke@435 | 41 | class OopClosure; |
duke@435 | 42 | |
duke@435 | 43 | class MemoryManager : public CHeapObj { |
duke@435 | 44 | private: |
duke@435 | 45 | enum { |
duke@435 | 46 | max_num_pools = 10 |
duke@435 | 47 | }; |
duke@435 | 48 | |
duke@435 | 49 | MemoryPool* _pools[max_num_pools]; |
duke@435 | 50 | int _num_pools; |
duke@435 | 51 | |
duke@435 | 52 | protected: |
duke@435 | 53 | volatile instanceOop _memory_mgr_obj; |
duke@435 | 54 | |
duke@435 | 55 | public: |
duke@435 | 56 | enum Name { |
duke@435 | 57 | Abstract, |
duke@435 | 58 | CodeCache, |
duke@435 | 59 | Copy, |
duke@435 | 60 | MarkSweepCompact, |
duke@435 | 61 | ParNew, |
duke@435 | 62 | ConcurrentMarkSweep, |
duke@435 | 63 | PSScavenge, |
tonyp@1524 | 64 | PSMarkSweep, |
tonyp@1524 | 65 | G1YoungGen, |
tonyp@1524 | 66 | G1OldGen |
duke@435 | 67 | }; |
duke@435 | 68 | |
duke@435 | 69 | MemoryManager(); |
duke@435 | 70 | |
duke@435 | 71 | int num_memory_pools() const { return _num_pools; } |
duke@435 | 72 | MemoryPool* get_memory_pool(int index) { |
duke@435 | 73 | assert(index >= 0 && index < _num_pools, "Invalid index"); |
duke@435 | 74 | return _pools[index]; |
duke@435 | 75 | } |
duke@435 | 76 | |
duke@435 | 77 | void add_pool(MemoryPool* pool); |
duke@435 | 78 | |
duke@435 | 79 | bool is_manager(instanceHandle mh) { return mh() == _memory_mgr_obj; } |
duke@435 | 80 | |
duke@435 | 81 | virtual instanceOop get_memory_manager_instance(TRAPS); |
duke@435 | 82 | virtual MemoryManager::Name kind() { return MemoryManager::Abstract; } |
duke@435 | 83 | virtual bool is_gc_memory_manager() { return false; } |
duke@435 | 84 | virtual const char* name() = 0; |
duke@435 | 85 | |
duke@435 | 86 | // GC support |
duke@435 | 87 | void oops_do(OopClosure* f); |
duke@435 | 88 | |
duke@435 | 89 | // Static factory methods to get a memory manager of a specific type |
duke@435 | 90 | static MemoryManager* get_code_cache_memory_manager(); |
duke@435 | 91 | static GCMemoryManager* get_copy_memory_manager(); |
duke@435 | 92 | static GCMemoryManager* get_msc_memory_manager(); |
duke@435 | 93 | static GCMemoryManager* get_parnew_memory_manager(); |
duke@435 | 94 | static GCMemoryManager* get_cms_memory_manager(); |
duke@435 | 95 | static GCMemoryManager* get_psScavenge_memory_manager(); |
duke@435 | 96 | static GCMemoryManager* get_psMarkSweep_memory_manager(); |
tonyp@1524 | 97 | static GCMemoryManager* get_g1YoungGen_memory_manager(); |
tonyp@1524 | 98 | static GCMemoryManager* get_g1OldGen_memory_manager(); |
duke@435 | 99 | |
duke@435 | 100 | }; |
duke@435 | 101 | |
duke@435 | 102 | class CodeCacheMemoryManager : public MemoryManager { |
duke@435 | 103 | private: |
duke@435 | 104 | public: |
duke@435 | 105 | CodeCacheMemoryManager() : MemoryManager() {} |
duke@435 | 106 | |
duke@435 | 107 | MemoryManager::Name kind() { return MemoryManager::CodeCache; } |
duke@435 | 108 | const char* name() { return "CodeCacheManager"; } |
duke@435 | 109 | }; |
duke@435 | 110 | |
duke@435 | 111 | class GCStatInfo : public CHeapObj { |
duke@435 | 112 | private: |
duke@435 | 113 | size_t _index; |
duke@435 | 114 | jlong _start_time; |
duke@435 | 115 | jlong _end_time; |
duke@435 | 116 | |
duke@435 | 117 | // We keep memory usage of all memory pools |
duke@435 | 118 | MemoryUsage* _before_gc_usage_array; |
duke@435 | 119 | MemoryUsage* _after_gc_usage_array; |
duke@435 | 120 | int _usage_array_size; |
duke@435 | 121 | |
duke@435 | 122 | void set_gc_usage(int pool_index, MemoryUsage, bool before_gc); |
duke@435 | 123 | |
duke@435 | 124 | public: |
duke@435 | 125 | GCStatInfo(int num_pools); |
duke@435 | 126 | ~GCStatInfo(); |
duke@435 | 127 | |
duke@435 | 128 | size_t gc_index() { return _index; } |
duke@435 | 129 | jlong start_time() { return _start_time; } |
duke@435 | 130 | jlong end_time() { return _end_time; } |
duke@435 | 131 | int usage_array_size() { return _usage_array_size; } |
duke@435 | 132 | MemoryUsage before_gc_usage_for_pool(int pool_index) { |
duke@435 | 133 | assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); |
duke@435 | 134 | return _before_gc_usage_array[pool_index]; |
duke@435 | 135 | } |
duke@435 | 136 | MemoryUsage after_gc_usage_for_pool(int pool_index) { |
duke@435 | 137 | assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); |
duke@435 | 138 | return _after_gc_usage_array[pool_index]; |
duke@435 | 139 | } |
duke@435 | 140 | |
kevinw@2058 | 141 | MemoryUsage* before_gc_usage_array() { return _before_gc_usage_array; } |
kevinw@2058 | 142 | MemoryUsage* after_gc_usage_array() { return _after_gc_usage_array; } |
kevinw@2058 | 143 | |
duke@435 | 144 | void set_index(size_t index) { _index = index; } |
duke@435 | 145 | void set_start_time(jlong time) { _start_time = time; } |
duke@435 | 146 | void set_end_time(jlong time) { _end_time = time; } |
duke@435 | 147 | void set_before_gc_usage(int pool_index, MemoryUsage usage) { |
duke@435 | 148 | assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); |
duke@435 | 149 | set_gc_usage(pool_index, usage, true /* before gc */); |
duke@435 | 150 | } |
duke@435 | 151 | void set_after_gc_usage(int pool_index, MemoryUsage usage) { |
duke@435 | 152 | assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); |
duke@435 | 153 | set_gc_usage(pool_index, usage, false /* after gc */); |
duke@435 | 154 | } |
duke@435 | 155 | |
kevinw@2058 | 156 | void clear(); |
duke@435 | 157 | }; |
duke@435 | 158 | |
duke@435 | 159 | class GCMemoryManager : public MemoryManager { |
duke@435 | 160 | private: |
duke@435 | 161 | // TODO: We should unify the GCCounter and GCMemoryManager statistic |
duke@435 | 162 | size_t _num_collections; |
duke@435 | 163 | elapsedTimer _accumulated_timer; |
duke@435 | 164 | elapsedTimer _gc_timer; // for measuring every GC duration |
duke@435 | 165 | GCStatInfo* _last_gc_stat; |
kevinw@2058 | 166 | Mutex* _last_gc_lock; |
kevinw@2058 | 167 | GCStatInfo* _current_gc_stat; |
duke@435 | 168 | int _num_gc_threads; |
duke@435 | 169 | public: |
duke@435 | 170 | GCMemoryManager(); |
duke@435 | 171 | ~GCMemoryManager(); |
duke@435 | 172 | |
duke@435 | 173 | void initialize_gc_stat_info(); |
duke@435 | 174 | |
duke@435 | 175 | bool is_gc_memory_manager() { return true; } |
duke@435 | 176 | jlong gc_time_ms() { return _accumulated_timer.milliseconds(); } |
duke@435 | 177 | size_t gc_count() { return _num_collections; } |
duke@435 | 178 | int num_gc_threads() { return _num_gc_threads; } |
duke@435 | 179 | void set_num_gc_threads(int count) { _num_gc_threads = count; } |
duke@435 | 180 | |
kevinw@2058 | 181 | void gc_begin(bool recordGCBeginTime, bool recordPreGCUsage, |
kevinw@2058 | 182 | bool recordAccumulatedGCTime); |
kevinw@2058 | 183 | void gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime, |
kevinw@2058 | 184 | bool recordGCEndTime, bool countCollection); |
duke@435 | 185 | |
duke@435 | 186 | void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); } |
kevinw@2058 | 187 | |
kevinw@2058 | 188 | // Copy out _last_gc_stat to the given destination, returning |
kevinw@2058 | 189 | // the collection count. Zero signifies no gc has taken place. |
kevinw@2058 | 190 | size_t get_last_gc_stat(GCStatInfo* dest); |
duke@435 | 191 | |
duke@435 | 192 | virtual MemoryManager::Name kind() = 0; |
duke@435 | 193 | }; |
duke@435 | 194 | |
duke@435 | 195 | // These subclasses of GCMemoryManager are defined to include |
duke@435 | 196 | // GC-specific information. |
duke@435 | 197 | // TODO: Add GC-specific information |
duke@435 | 198 | class CopyMemoryManager : public GCMemoryManager { |
duke@435 | 199 | private: |
duke@435 | 200 | public: |
duke@435 | 201 | CopyMemoryManager() : GCMemoryManager() {} |
duke@435 | 202 | |
duke@435 | 203 | MemoryManager::Name kind() { return MemoryManager::Copy; } |
duke@435 | 204 | const char* name() { return "Copy"; } |
duke@435 | 205 | }; |
duke@435 | 206 | |
duke@435 | 207 | class MSCMemoryManager : public GCMemoryManager { |
duke@435 | 208 | private: |
duke@435 | 209 | public: |
duke@435 | 210 | MSCMemoryManager() : GCMemoryManager() {} |
duke@435 | 211 | |
duke@435 | 212 | MemoryManager::Name kind() { return MemoryManager::MarkSweepCompact; } |
duke@435 | 213 | const char* name() { return "MarkSweepCompact"; } |
duke@435 | 214 | |
duke@435 | 215 | }; |
duke@435 | 216 | |
duke@435 | 217 | class ParNewMemoryManager : public GCMemoryManager { |
duke@435 | 218 | private: |
duke@435 | 219 | public: |
duke@435 | 220 | ParNewMemoryManager() : GCMemoryManager() {} |
duke@435 | 221 | |
duke@435 | 222 | MemoryManager::Name kind() { return MemoryManager::ParNew; } |
duke@435 | 223 | const char* name() { return "ParNew"; } |
duke@435 | 224 | |
duke@435 | 225 | }; |
duke@435 | 226 | |
duke@435 | 227 | class CMSMemoryManager : public GCMemoryManager { |
duke@435 | 228 | private: |
duke@435 | 229 | public: |
duke@435 | 230 | CMSMemoryManager() : GCMemoryManager() {} |
duke@435 | 231 | |
duke@435 | 232 | MemoryManager::Name kind() { return MemoryManager::ConcurrentMarkSweep; } |
duke@435 | 233 | const char* name() { return "ConcurrentMarkSweep";} |
duke@435 | 234 | |
duke@435 | 235 | }; |
duke@435 | 236 | |
duke@435 | 237 | class PSScavengeMemoryManager : public GCMemoryManager { |
duke@435 | 238 | private: |
duke@435 | 239 | public: |
duke@435 | 240 | PSScavengeMemoryManager() : GCMemoryManager() {} |
duke@435 | 241 | |
duke@435 | 242 | MemoryManager::Name kind() { return MemoryManager::PSScavenge; } |
duke@435 | 243 | const char* name() { return "PS Scavenge"; } |
duke@435 | 244 | |
duke@435 | 245 | }; |
duke@435 | 246 | |
duke@435 | 247 | class PSMarkSweepMemoryManager : public GCMemoryManager { |
duke@435 | 248 | private: |
duke@435 | 249 | public: |
duke@435 | 250 | PSMarkSweepMemoryManager() : GCMemoryManager() {} |
duke@435 | 251 | |
duke@435 | 252 | MemoryManager::Name kind() { return MemoryManager::PSMarkSweep; } |
duke@435 | 253 | const char* name() { return "PS MarkSweep"; } |
duke@435 | 254 | }; |
tonyp@1524 | 255 | |
tonyp@1524 | 256 | class G1YoungGenMemoryManager : public GCMemoryManager { |
tonyp@1524 | 257 | private: |
tonyp@1524 | 258 | public: |
tonyp@1524 | 259 | G1YoungGenMemoryManager() : GCMemoryManager() {} |
tonyp@1524 | 260 | |
tonyp@1524 | 261 | MemoryManager::Name kind() { return MemoryManager::G1YoungGen; } |
tonyp@1524 | 262 | const char* name() { return "G1 Young Generation"; } |
tonyp@1524 | 263 | }; |
tonyp@1524 | 264 | |
tonyp@1524 | 265 | class G1OldGenMemoryManager : public GCMemoryManager { |
tonyp@1524 | 266 | private: |
tonyp@1524 | 267 | public: |
tonyp@1524 | 268 | G1OldGenMemoryManager() : GCMemoryManager() {} |
tonyp@1524 | 269 | |
tonyp@1524 | 270 | MemoryManager::Name kind() { return MemoryManager::G1OldGen; } |
tonyp@1524 | 271 | const char* name() { return "G1 Old Generation"; } |
tonyp@1524 | 272 | }; |
stefank@2314 | 273 | |
stefank@2314 | 274 | #endif // SHARE_VM_SERVICES_MEMORYMANAGER_HPP |