J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 1 | /* |
Lois Foltan | 7bf953d | 2013-09-26 10:25:02 -0400 | [diff] [blame] | 2 | * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 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 | * |
Erik Trimble | ba7c173 | 2010-05-27 19:08:38 -0700 | [diff] [blame] | 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. |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 22 | * |
| 23 | */ |
| 24 | |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 25 | #include "precompiled.hpp" |
| 26 | #include "classfile/systemDictionary.hpp" |
| 27 | #include "classfile/vmSymbols.hpp" |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 28 | #include "memory/metaspace.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 29 | #include "oops/oop.inline.hpp" |
| 30 | #include "runtime/handles.inline.hpp" |
| 31 | #include "runtime/javaCalls.hpp" |
Goetz Lindenmaier | 6e6f072 | 2014-04-29 15:17:27 +0200 | [diff] [blame^] | 32 | #include "runtime/orderAccess.inline.hpp" |
Stefan Karlsson | 8006fe8 | 2010-11-23 13:22:55 -0800 | [diff] [blame] | 33 | #include "services/lowMemoryDetector.hpp" |
| 34 | #include "services/management.hpp" |
| 35 | #include "services/memoryManager.hpp" |
| 36 | #include "services/memoryPool.hpp" |
Joseph Provino | 698fba9 | 2013-01-23 13:02:39 -0500 | [diff] [blame] | 37 | #include "utilities/macros.hpp" |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 38 | #include "utilities/globalDefinitions.hpp" |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 39 | |
| 40 | MemoryPool::MemoryPool(const char* name, |
| 41 | PoolType type, |
| 42 | size_t init_size, |
| 43 | size_t max_size, |
| 44 | bool support_usage_threshold, |
| 45 | bool support_gc_threshold) { |
| 46 | _name = name; |
| 47 | _initial_size = init_size; |
| 48 | _max_size = max_size; |
Lois Foltan | 7bf953d | 2013-09-26 10:25:02 -0400 | [diff] [blame] | 49 | (void)const_cast<instanceOop&>(_memory_pool_obj = NULL); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 50 | _available_for_allocation = true; |
| 51 | _num_managers = 0; |
| 52 | _type = type; |
| 53 | |
| 54 | // initialize the max and init size of collection usage |
| 55 | _after_gc_usage = MemoryUsage(_initial_size, 0, 0, _max_size); |
| 56 | |
| 57 | _usage_sensor = NULL; |
| 58 | _gc_usage_sensor = NULL; |
| 59 | // usage threshold supports both high and low threshold |
| 60 | _usage_threshold = new ThresholdSupport(support_usage_threshold, support_usage_threshold); |
| 61 | // gc usage threshold supports only high threshold |
| 62 | _gc_usage_threshold = new ThresholdSupport(support_gc_threshold, support_gc_threshold); |
| 63 | } |
| 64 | |
| 65 | void MemoryPool::add_manager(MemoryManager* mgr) { |
| 66 | assert(_num_managers < MemoryPool::max_num_managers, "_num_managers exceeds the max"); |
| 67 | if (_num_managers < MemoryPool::max_num_managers) { |
| 68 | _managers[_num_managers] = mgr; |
| 69 | _num_managers++; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | |
| 74 | // Returns an instanceHandle of a MemoryPool object. |
| 75 | // It creates a MemoryPool instance when the first time |
| 76 | // this function is called. |
| 77 | instanceOop MemoryPool::get_memory_pool_instance(TRAPS) { |
| 78 | // Must do an acquire so as to force ordering of subsequent |
| 79 | // loads from anything _memory_pool_obj points to or implies. |
| 80 | instanceOop pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); |
| 81 | if (pool_obj == NULL) { |
| 82 | // It's ok for more than one thread to execute the code up to the locked region. |
| 83 | // Extra pool instances will just be gc'ed. |
Jon Masamitsu | 5c58d27 | 2012-09-01 13:25:18 -0400 | [diff] [blame] | 84 | Klass* k = Management::sun_management_ManagementFactory_klass(CHECK_NULL); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 85 | instanceKlassHandle ik(THREAD, k); |
| 86 | |
| 87 | Handle pool_name = java_lang_String::create_from_str(_name, CHECK_NULL); |
| 88 | jlong usage_threshold_value = (_usage_threshold->is_high_threshold_supported() ? 0 : -1L); |
| 89 | jlong gc_usage_threshold_value = (_gc_usage_threshold->is_high_threshold_supported() ? 0 : -1L); |
| 90 | |
| 91 | JavaValue result(T_OBJECT); |
| 92 | JavaCallArguments args; |
| 93 | args.push_oop(pool_name); // Argument 1 |
| 94 | args.push_int((int) is_heap()); // Argument 2 |
| 95 | |
Coleen Phillimore | 7b4f807 | 2011-01-27 16:11:27 -0800 | [diff] [blame] | 96 | Symbol* method_name = vmSymbols::createMemoryPool_name(); |
| 97 | Symbol* signature = vmSymbols::createMemoryPool_signature(); |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 98 | |
| 99 | args.push_long(usage_threshold_value); // Argument 3 |
| 100 | args.push_long(gc_usage_threshold_value); // Argument 4 |
| 101 | |
| 102 | JavaCalls::call_static(&result, |
| 103 | ik, |
| 104 | method_name, |
| 105 | signature, |
| 106 | &args, |
| 107 | CHECK_NULL); |
| 108 | |
| 109 | instanceOop p = (instanceOop) result.get_jobject(); |
| 110 | instanceHandle pool(THREAD, p); |
| 111 | |
| 112 | { |
| 113 | // Get lock since another thread may have create the instance |
| 114 | MutexLocker ml(Management_lock); |
| 115 | |
| 116 | // Check if another thread has created the pool. We reload |
| 117 | // _memory_pool_obj here because some other thread may have |
| 118 | // initialized it while we were executing the code before the lock. |
| 119 | // |
| 120 | // The lock has done an acquire, so the load can't float above it, |
| 121 | // but we need to do a load_acquire as above. |
| 122 | pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); |
| 123 | if (pool_obj != NULL) { |
| 124 | return pool_obj; |
| 125 | } |
| 126 | |
| 127 | // Get the address of the object we created via call_special. |
| 128 | pool_obj = pool(); |
| 129 | |
| 130 | // Use store barrier to make sure the memory accesses associated |
| 131 | // with creating the pool are visible before publishing its address. |
| 132 | // The unlock will publish the store to _memory_pool_obj because |
| 133 | // it does a release first. |
| 134 | OrderAccess::release_store_ptr(&_memory_pool_obj, pool_obj); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | return pool_obj; |
| 139 | } |
| 140 | |
| 141 | inline static size_t get_max_value(size_t val1, size_t val2) { |
| 142 | return (val1 > val2 ? val1 : val2); |
| 143 | } |
| 144 | |
| 145 | void MemoryPool::record_peak_memory_usage() { |
| 146 | // Caller in JDK is responsible for synchronization - |
| 147 | // acquire the lock for this memory pool before calling VM |
| 148 | MemoryUsage usage = get_memory_usage(); |
| 149 | size_t peak_used = get_max_value(usage.used(), _peak_usage.used()); |
| 150 | size_t peak_committed = get_max_value(usage.committed(), _peak_usage.committed()); |
| 151 | size_t peak_max_size = get_max_value(usage.max_size(), _peak_usage.max_size()); |
| 152 | |
| 153 | _peak_usage = MemoryUsage(initial_size(), peak_used, peak_committed, peak_max_size); |
| 154 | } |
| 155 | |
| 156 | static void set_sensor_obj_at(SensorInfo** sensor_ptr, instanceHandle sh) { |
| 157 | assert(*sensor_ptr == NULL, "Should be called only once"); |
| 158 | SensorInfo* sensor = new SensorInfo(); |
| 159 | sensor->set_sensor(sh()); |
| 160 | *sensor_ptr = sensor; |
| 161 | } |
| 162 | |
| 163 | void MemoryPool::set_usage_sensor_obj(instanceHandle sh) { |
| 164 | set_sensor_obj_at(&_usage_sensor, sh); |
| 165 | } |
| 166 | |
| 167 | void MemoryPool::set_gc_usage_sensor_obj(instanceHandle sh) { |
| 168 | set_sensor_obj_at(&_gc_usage_sensor, sh); |
| 169 | } |
| 170 | |
| 171 | void MemoryPool::oops_do(OopClosure* f) { |
| 172 | f->do_oop((oop*) &_memory_pool_obj); |
| 173 | if (_usage_sensor != NULL) { |
| 174 | _usage_sensor->oops_do(f); |
| 175 | } |
| 176 | if (_gc_usage_sensor != NULL) { |
| 177 | _gc_usage_sensor->oops_do(f); |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | ContiguousSpacePool::ContiguousSpacePool(ContiguousSpace* space, |
| 182 | const char* name, |
| 183 | PoolType type, |
| 184 | size_t max_size, |
| 185 | bool support_usage_threshold) : |
| 186 | CollectedMemoryPool(name, type, space->capacity(), max_size, |
| 187 | support_usage_threshold), _space(space) { |
| 188 | } |
| 189 | |
| 190 | MemoryUsage ContiguousSpacePool::get_memory_usage() { |
| 191 | size_t maxSize = (available_for_allocation() ? max_size() : 0); |
| 192 | size_t used = used_in_bytes(); |
| 193 | size_t committed = _space->capacity(); |
| 194 | |
| 195 | return MemoryUsage(initial_size(), used, committed, maxSize); |
| 196 | } |
| 197 | |
| 198 | SurvivorContiguousSpacePool::SurvivorContiguousSpacePool(DefNewGeneration* gen, |
| 199 | const char* name, |
| 200 | PoolType type, |
| 201 | size_t max_size, |
| 202 | bool support_usage_threshold) : |
| 203 | CollectedMemoryPool(name, type, gen->from()->capacity(), max_size, |
| 204 | support_usage_threshold), _gen(gen) { |
| 205 | } |
| 206 | |
| 207 | MemoryUsage SurvivorContiguousSpacePool::get_memory_usage() { |
| 208 | size_t maxSize = (available_for_allocation() ? max_size() : 0); |
| 209 | size_t used = used_in_bytes(); |
| 210 | size_t committed = committed_in_bytes(); |
| 211 | |
| 212 | return MemoryUsage(initial_size(), used, committed, maxSize); |
| 213 | } |
| 214 | |
Joseph Provino | 698fba9 | 2013-01-23 13:02:39 -0500 | [diff] [blame] | 215 | #if INCLUDE_ALL_GCS |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 216 | CompactibleFreeListSpacePool::CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, |
| 217 | const char* name, |
| 218 | PoolType type, |
| 219 | size_t max_size, |
| 220 | bool support_usage_threshold) : |
| 221 | CollectedMemoryPool(name, type, space->capacity(), max_size, |
| 222 | support_usage_threshold), _space(space) { |
| 223 | } |
| 224 | |
| 225 | MemoryUsage CompactibleFreeListSpacePool::get_memory_usage() { |
| 226 | size_t maxSize = (available_for_allocation() ? max_size() : 0); |
| 227 | size_t used = used_in_bytes(); |
| 228 | size_t committed = _space->capacity(); |
| 229 | |
| 230 | return MemoryUsage(initial_size(), used, committed, maxSize); |
| 231 | } |
Joseph Provino | 698fba9 | 2013-01-23 13:02:39 -0500 | [diff] [blame] | 232 | #endif // INCLUDE_ALL_GCS |
J. Duke | 8153779 | 2007-12-01 00:00:00 +0000 | [diff] [blame] | 233 | |
| 234 | GenerationPool::GenerationPool(Generation* gen, |
| 235 | const char* name, |
| 236 | PoolType type, |
| 237 | bool support_usage_threshold) : |
| 238 | CollectedMemoryPool(name, type, gen->capacity(), gen->max_capacity(), |
| 239 | support_usage_threshold), _gen(gen) { |
| 240 | } |
| 241 | |
| 242 | MemoryUsage GenerationPool::get_memory_usage() { |
| 243 | size_t used = used_in_bytes(); |
| 244 | size_t committed = _gen->capacity(); |
| 245 | size_t maxSize = (available_for_allocation() ? max_size() : 0); |
| 246 | |
| 247 | return MemoryUsage(initial_size(), used, committed, maxSize); |
| 248 | } |
| 249 | |
| 250 | CodeHeapPool::CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold) : |
| 251 | MemoryPool(name, NonHeap, codeHeap->capacity(), codeHeap->max_capacity(), |
| 252 | support_usage_threshold, false), _codeHeap(codeHeap) { |
| 253 | } |
| 254 | |
| 255 | MemoryUsage CodeHeapPool::get_memory_usage() { |
| 256 | size_t used = used_in_bytes(); |
| 257 | size_t committed = _codeHeap->capacity(); |
| 258 | size_t maxSize = (available_for_allocation() ? max_size() : 0); |
| 259 | |
| 260 | return MemoryUsage(initial_size(), used, committed, maxSize); |
| 261 | } |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 262 | |
| 263 | MetaspacePool::MetaspacePool() : |
Erik Helin | 2cab7ea | 2013-09-17 20:59:07 +0200 | [diff] [blame] | 264 | MemoryPool("Metaspace", NonHeap, 0, calculate_max_size(), true, false) { } |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 265 | |
| 266 | MemoryUsage MetaspacePool::get_memory_usage() { |
Erik Helin | 2cab7ea | 2013-09-17 20:59:07 +0200 | [diff] [blame] | 267 | size_t committed = MetaspaceAux::committed_bytes(); |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 268 | return MemoryUsage(initial_size(), used_in_bytes(), committed, max_size()); |
| 269 | } |
| 270 | |
| 271 | size_t MetaspacePool::used_in_bytes() { |
Erik Helin | 977d1f7 | 2014-03-31 17:09:38 +0200 | [diff] [blame] | 272 | return MetaspaceAux::used_bytes(); |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 273 | } |
| 274 | |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 275 | size_t MetaspacePool::calculate_max_size() const { |
Erik Helin | 2cab7ea | 2013-09-17 20:59:07 +0200 | [diff] [blame] | 276 | return FLAG_IS_CMDLINE(MaxMetaspaceSize) ? MaxMetaspaceSize : |
| 277 | MemoryUsage::undefined_size(); |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | CompressedKlassSpacePool::CompressedKlassSpacePool() : |
Erik Helin | 2cab7ea | 2013-09-17 20:59:07 +0200 | [diff] [blame] | 281 | MemoryPool("Compressed Class Space", NonHeap, 0, CompressedClassSpaceSize, true, false) { } |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 282 | |
| 283 | size_t CompressedKlassSpacePool::used_in_bytes() { |
Erik Helin | 977d1f7 | 2014-03-31 17:09:38 +0200 | [diff] [blame] | 284 | return MetaspaceAux::used_bytes(Metaspace::ClassType); |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 285 | } |
| 286 | |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 287 | MemoryUsage CompressedKlassSpacePool::get_memory_usage() { |
Erik Helin | 2cab7ea | 2013-09-17 20:59:07 +0200 | [diff] [blame] | 288 | size_t committed = MetaspaceAux::committed_bytes(Metaspace::ClassType); |
Erik Helin | 604a75f | 2013-06-26 16:58:37 +0200 | [diff] [blame] | 289 | return MemoryUsage(initial_size(), used_in_bytes(), committed, max_size()); |
| 290 | } |