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annotate src/share/vm/services/memoryPool.cpp @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Tue, 05 Apr 2011 14:12:31 -0700 |
| parents | 3582bf76420e |
| children | da91efe96a93 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "classfile/vmSymbols.hpp" | |
| 28 #include "oops/oop.inline.hpp" | |
| 29 #include "runtime/handles.inline.hpp" | |
| 30 #include "runtime/javaCalls.hpp" | |
| 31 #include "services/lowMemoryDetector.hpp" | |
| 32 #include "services/management.hpp" | |
| 33 #include "services/memoryManager.hpp" | |
| 34 #include "services/memoryPool.hpp" | |
| 0 | 35 |
| 36 MemoryPool::MemoryPool(const char* name, | |
| 37 PoolType type, | |
| 38 size_t init_size, | |
| 39 size_t max_size, | |
| 40 bool support_usage_threshold, | |
| 41 bool support_gc_threshold) { | |
| 42 _name = name; | |
| 43 _initial_size = init_size; | |
| 44 _max_size = max_size; | |
| 45 _memory_pool_obj = NULL; | |
| 46 _available_for_allocation = true; | |
| 47 _num_managers = 0; | |
| 48 _type = type; | |
| 49 | |
| 50 // initialize the max and init size of collection usage | |
| 51 _after_gc_usage = MemoryUsage(_initial_size, 0, 0, _max_size); | |
| 52 | |
| 53 _usage_sensor = NULL; | |
| 54 _gc_usage_sensor = NULL; | |
| 55 // usage threshold supports both high and low threshold | |
| 56 _usage_threshold = new ThresholdSupport(support_usage_threshold, support_usage_threshold); | |
| 57 // gc usage threshold supports only high threshold | |
| 58 _gc_usage_threshold = new ThresholdSupport(support_gc_threshold, support_gc_threshold); | |
| 59 } | |
| 60 | |
| 61 void MemoryPool::add_manager(MemoryManager* mgr) { | |
| 62 assert(_num_managers < MemoryPool::max_num_managers, "_num_managers exceeds the max"); | |
| 63 if (_num_managers < MemoryPool::max_num_managers) { | |
| 64 _managers[_num_managers] = mgr; | |
| 65 _num_managers++; | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 | |
| 70 // Returns an instanceHandle of a MemoryPool object. | |
| 71 // It creates a MemoryPool instance when the first time | |
| 72 // this function is called. | |
| 73 instanceOop MemoryPool::get_memory_pool_instance(TRAPS) { | |
| 74 // Must do an acquire so as to force ordering of subsequent | |
| 75 // loads from anything _memory_pool_obj points to or implies. | |
| 76 instanceOop pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); | |
| 77 if (pool_obj == NULL) { | |
| 78 // It's ok for more than one thread to execute the code up to the locked region. | |
| 79 // Extra pool instances will just be gc'ed. | |
| 80 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_NULL); | |
| 81 instanceKlassHandle ik(THREAD, k); | |
| 82 | |
| 83 Handle pool_name = java_lang_String::create_from_str(_name, CHECK_NULL); | |
| 84 jlong usage_threshold_value = (_usage_threshold->is_high_threshold_supported() ? 0 : -1L); | |
| 85 jlong gc_usage_threshold_value = (_gc_usage_threshold->is_high_threshold_supported() ? 0 : -1L); | |
| 86 | |
| 87 JavaValue result(T_OBJECT); | |
| 88 JavaCallArguments args; | |
| 89 args.push_oop(pool_name); // Argument 1 | |
| 90 args.push_int((int) is_heap()); // Argument 2 | |
| 91 | |
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92 Symbol* method_name = vmSymbols::createMemoryPool_name(); |
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93 Symbol* signature = vmSymbols::createMemoryPool_signature(); |
| 0 | 94 |
| 95 args.push_long(usage_threshold_value); // Argument 3 | |
| 96 args.push_long(gc_usage_threshold_value); // Argument 4 | |
| 97 | |
| 98 JavaCalls::call_static(&result, | |
| 99 ik, | |
| 100 method_name, | |
| 101 signature, | |
| 102 &args, | |
| 103 CHECK_NULL); | |
| 104 | |
| 105 instanceOop p = (instanceOop) result.get_jobject(); | |
| 106 instanceHandle pool(THREAD, p); | |
| 107 | |
| 108 { | |
| 109 // Get lock since another thread may have create the instance | |
| 110 MutexLocker ml(Management_lock); | |
| 111 | |
| 112 // Check if another thread has created the pool. We reload | |
| 113 // _memory_pool_obj here because some other thread may have | |
| 114 // initialized it while we were executing the code before the lock. | |
| 115 // | |
| 116 // The lock has done an acquire, so the load can't float above it, | |
| 117 // but we need to do a load_acquire as above. | |
| 118 pool_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_pool_obj); | |
| 119 if (pool_obj != NULL) { | |
| 120 return pool_obj; | |
| 121 } | |
| 122 | |
| 123 // Get the address of the object we created via call_special. | |
| 124 pool_obj = pool(); | |
| 125 | |
| 126 // Use store barrier to make sure the memory accesses associated | |
| 127 // with creating the pool are visible before publishing its address. | |
| 128 // The unlock will publish the store to _memory_pool_obj because | |
| 129 // it does a release first. | |
| 130 OrderAccess::release_store_ptr(&_memory_pool_obj, pool_obj); | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 return pool_obj; | |
| 135 } | |
| 136 | |
| 137 inline static size_t get_max_value(size_t val1, size_t val2) { | |
| 138 return (val1 > val2 ? val1 : val2); | |
| 139 } | |
| 140 | |
| 141 void MemoryPool::record_peak_memory_usage() { | |
| 142 // Caller in JDK is responsible for synchronization - | |
| 143 // acquire the lock for this memory pool before calling VM | |
| 144 MemoryUsage usage = get_memory_usage(); | |
| 145 size_t peak_used = get_max_value(usage.used(), _peak_usage.used()); | |
| 146 size_t peak_committed = get_max_value(usage.committed(), _peak_usage.committed()); | |
| 147 size_t peak_max_size = get_max_value(usage.max_size(), _peak_usage.max_size()); | |
| 148 | |
| 149 _peak_usage = MemoryUsage(initial_size(), peak_used, peak_committed, peak_max_size); | |
| 150 } | |
| 151 | |
| 152 static void set_sensor_obj_at(SensorInfo** sensor_ptr, instanceHandle sh) { | |
| 153 assert(*sensor_ptr == NULL, "Should be called only once"); | |
| 154 SensorInfo* sensor = new SensorInfo(); | |
| 155 sensor->set_sensor(sh()); | |
| 156 *sensor_ptr = sensor; | |
| 157 } | |
| 158 | |
| 159 void MemoryPool::set_usage_sensor_obj(instanceHandle sh) { | |
| 160 set_sensor_obj_at(&_usage_sensor, sh); | |
| 161 } | |
| 162 | |
| 163 void MemoryPool::set_gc_usage_sensor_obj(instanceHandle sh) { | |
| 164 set_sensor_obj_at(&_gc_usage_sensor, sh); | |
| 165 } | |
| 166 | |
| 167 void MemoryPool::oops_do(OopClosure* f) { | |
| 168 f->do_oop((oop*) &_memory_pool_obj); | |
| 169 if (_usage_sensor != NULL) { | |
| 170 _usage_sensor->oops_do(f); | |
| 171 } | |
| 172 if (_gc_usage_sensor != NULL) { | |
| 173 _gc_usage_sensor->oops_do(f); | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 ContiguousSpacePool::ContiguousSpacePool(ContiguousSpace* space, | |
| 178 const char* name, | |
| 179 PoolType type, | |
| 180 size_t max_size, | |
| 181 bool support_usage_threshold) : | |
| 182 CollectedMemoryPool(name, type, space->capacity(), max_size, | |
| 183 support_usage_threshold), _space(space) { | |
| 184 } | |
| 185 | |
| 186 MemoryUsage ContiguousSpacePool::get_memory_usage() { | |
| 187 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
| 188 size_t used = used_in_bytes(); | |
| 189 size_t committed = _space->capacity(); | |
| 190 | |
| 191 return MemoryUsage(initial_size(), used, committed, maxSize); | |
| 192 } | |
| 193 | |
| 194 SurvivorContiguousSpacePool::SurvivorContiguousSpacePool(DefNewGeneration* gen, | |
| 195 const char* name, | |
| 196 PoolType type, | |
| 197 size_t max_size, | |
| 198 bool support_usage_threshold) : | |
| 199 CollectedMemoryPool(name, type, gen->from()->capacity(), max_size, | |
| 200 support_usage_threshold), _gen(gen) { | |
| 201 } | |
| 202 | |
| 203 MemoryUsage SurvivorContiguousSpacePool::get_memory_usage() { | |
| 204 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
| 205 size_t used = used_in_bytes(); | |
| 206 size_t committed = committed_in_bytes(); | |
| 207 | |
| 208 return MemoryUsage(initial_size(), used, committed, maxSize); | |
| 209 } | |
| 210 | |
| 211 #ifndef SERIALGC | |
| 212 CompactibleFreeListSpacePool::CompactibleFreeListSpacePool(CompactibleFreeListSpace* space, | |
| 213 const char* name, | |
| 214 PoolType type, | |
| 215 size_t max_size, | |
| 216 bool support_usage_threshold) : | |
| 217 CollectedMemoryPool(name, type, space->capacity(), max_size, | |
| 218 support_usage_threshold), _space(space) { | |
| 219 } | |
| 220 | |
| 221 MemoryUsage CompactibleFreeListSpacePool::get_memory_usage() { | |
| 222 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
| 223 size_t used = used_in_bytes(); | |
| 224 size_t committed = _space->capacity(); | |
| 225 | |
| 226 return MemoryUsage(initial_size(), used, committed, maxSize); | |
| 227 } | |
| 228 #endif // SERIALGC | |
| 229 | |
| 230 GenerationPool::GenerationPool(Generation* gen, | |
| 231 const char* name, | |
| 232 PoolType type, | |
| 233 bool support_usage_threshold) : | |
| 234 CollectedMemoryPool(name, type, gen->capacity(), gen->max_capacity(), | |
| 235 support_usage_threshold), _gen(gen) { | |
| 236 } | |
| 237 | |
| 238 MemoryUsage GenerationPool::get_memory_usage() { | |
| 239 size_t used = used_in_bytes(); | |
| 240 size_t committed = _gen->capacity(); | |
| 241 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
| 242 | |
| 243 return MemoryUsage(initial_size(), used, committed, maxSize); | |
| 244 } | |
| 245 | |
| 246 CodeHeapPool::CodeHeapPool(CodeHeap* codeHeap, const char* name, bool support_usage_threshold) : | |
| 247 MemoryPool(name, NonHeap, codeHeap->capacity(), codeHeap->max_capacity(), | |
| 248 support_usage_threshold, false), _codeHeap(codeHeap) { | |
| 249 } | |
| 250 | |
| 251 MemoryUsage CodeHeapPool::get_memory_usage() { | |
| 252 size_t used = used_in_bytes(); | |
| 253 size_t committed = _codeHeap->capacity(); | |
| 254 size_t maxSize = (available_for_allocation() ? max_size() : 0); | |
| 255 | |
| 256 return MemoryUsage(initial_size(), used, committed, maxSize); | |
| 257 } |