Mercurial > hg > graal-compiler
annotate src/share/vm/services/memoryManager.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | db0d5eba9d20 |
| children | f6f3eef8a521 |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 2005, 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 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_memoryManager.cpp.incl" | |
| 27 | |
| 28 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char*, int, char*, int, | |
| 29 size_t, size_t, size_t, size_t); | |
| 30 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, char*, int, char*, int, | |
| 31 size_t, size_t, size_t, size_t); | |
| 32 | |
| 33 MemoryManager::MemoryManager() { | |
| 34 _num_pools = 0; | |
| 35 _memory_mgr_obj = NULL; | |
| 36 } | |
| 37 | |
| 38 void MemoryManager::add_pool(MemoryPool* pool) { | |
| 39 assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max"); | |
| 40 if (_num_pools < MemoryManager::max_num_pools) { | |
| 41 _pools[_num_pools] = pool; | |
| 42 _num_pools++; | |
| 43 } | |
| 44 pool->add_manager(this); | |
| 45 } | |
| 46 | |
| 47 MemoryManager* MemoryManager::get_code_cache_memory_manager() { | |
| 48 return (MemoryManager*) new CodeCacheMemoryManager(); | |
| 49 } | |
| 50 | |
| 51 GCMemoryManager* MemoryManager::get_copy_memory_manager() { | |
| 52 return (GCMemoryManager*) new CopyMemoryManager(); | |
| 53 } | |
| 54 | |
| 55 GCMemoryManager* MemoryManager::get_msc_memory_manager() { | |
| 56 return (GCMemoryManager*) new MSCMemoryManager(); | |
| 57 } | |
| 58 | |
| 59 GCMemoryManager* MemoryManager::get_parnew_memory_manager() { | |
| 60 return (GCMemoryManager*) new ParNewMemoryManager(); | |
| 61 } | |
| 62 | |
| 63 GCMemoryManager* MemoryManager::get_cms_memory_manager() { | |
| 64 return (GCMemoryManager*) new CMSMemoryManager(); | |
| 65 } | |
| 66 | |
| 67 GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() { | |
| 68 return (GCMemoryManager*) new PSScavengeMemoryManager(); | |
| 69 } | |
| 70 | |
| 71 GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() { | |
| 72 return (GCMemoryManager*) new PSMarkSweepMemoryManager(); | |
| 73 } | |
| 74 | |
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75 GCMemoryManager* MemoryManager::get_g1YoungGen_memory_manager() { |
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76 return (GCMemoryManager*) new G1YoungGenMemoryManager(); |
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77 } |
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78 |
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79 GCMemoryManager* MemoryManager::get_g1OldGen_memory_manager() { |
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80 return (GCMemoryManager*) new G1OldGenMemoryManager(); |
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81 } |
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82 |
| 0 | 83 instanceOop MemoryManager::get_memory_manager_instance(TRAPS) { |
| 84 // Must do an acquire so as to force ordering of subsequent | |
| 85 // loads from anything _memory_mgr_obj points to or implies. | |
| 86 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); | |
| 87 if (mgr_obj == NULL) { | |
| 88 // It's ok for more than one thread to execute the code up to the locked region. | |
| 89 // Extra manager instances will just be gc'ed. | |
| 90 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0); | |
| 91 instanceKlassHandle ik(THREAD, k); | |
| 92 | |
| 93 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0); | |
| 94 | |
| 95 JavaValue result(T_OBJECT); | |
| 96 JavaCallArguments args; | |
| 97 args.push_oop(mgr_name); // Argument 1 | |
| 98 | |
| 99 symbolHandle method_name; | |
| 100 symbolHandle signature; | |
| 101 if (is_gc_memory_manager()) { | |
| 102 method_name = vmSymbolHandles::createGarbageCollector_name(); | |
| 103 signature = vmSymbolHandles::createGarbageCollector_signature(); | |
| 104 args.push_oop(Handle()); // Argument 2 (for future extension) | |
| 105 } else { | |
| 106 method_name = vmSymbolHandles::createMemoryManager_name(); | |
| 107 signature = vmSymbolHandles::createMemoryManager_signature(); | |
| 108 } | |
| 109 | |
| 110 JavaCalls::call_static(&result, | |
| 111 ik, | |
| 112 method_name, | |
| 113 signature, | |
| 114 &args, | |
| 115 CHECK_0); | |
| 116 | |
| 117 instanceOop m = (instanceOop) result.get_jobject(); | |
| 118 instanceHandle mgr(THREAD, m); | |
| 119 | |
| 120 { | |
| 121 // Get lock before setting _memory_mgr_obj | |
| 122 // since another thread may have created the instance | |
| 123 MutexLocker ml(Management_lock); | |
| 124 | |
| 125 // Check if another thread has created the management object. We reload | |
| 126 // _memory_mgr_obj here because some other thread may have initialized | |
| 127 // it while we were executing the code before the lock. | |
| 128 // | |
| 129 // The lock has done an acquire, so the load can't float above it, but | |
| 130 // we need to do a load_acquire as above. | |
| 131 mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj); | |
| 132 if (mgr_obj != NULL) { | |
| 133 return mgr_obj; | |
| 134 } | |
| 135 | |
| 136 // Get the address of the object we created via call_special. | |
| 137 mgr_obj = mgr(); | |
| 138 | |
| 139 // Use store barrier to make sure the memory accesses associated | |
| 140 // with creating the management object are visible before publishing | |
| 141 // its address. The unlock will publish the store to _memory_mgr_obj | |
| 142 // because it does a release first. | |
| 143 OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj); | |
| 144 } | |
| 145 } | |
| 146 | |
| 147 return mgr_obj; | |
| 148 } | |
| 149 | |
| 150 void MemoryManager::oops_do(OopClosure* f) { | |
| 151 f->do_oop((oop*) &_memory_mgr_obj); | |
| 152 } | |
| 153 | |
| 154 GCStatInfo::GCStatInfo(int num_pools) { | |
| 155 // initialize the arrays for memory usage | |
| 156 _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); | |
| 157 _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools); | |
| 158 size_t len = num_pools * sizeof(MemoryUsage); | |
| 159 memset(_before_gc_usage_array, 0, len); | |
| 160 memset(_after_gc_usage_array, 0, len); | |
| 161 _usage_array_size = num_pools; | |
| 162 } | |
| 163 | |
| 164 GCStatInfo::~GCStatInfo() { | |
| 165 FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array); | |
| 166 FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array); | |
| 167 } | |
| 168 | |
| 169 void GCStatInfo::copy_stat(GCStatInfo* stat) { | |
| 170 set_index(stat->gc_index()); | |
| 171 set_start_time(stat->start_time()); | |
| 172 set_end_time(stat->end_time()); | |
| 173 assert(_usage_array_size == stat->usage_array_size(), "Must have same array size"); | |
| 174 for (int i = 0; i < _usage_array_size; i++) { | |
| 175 set_before_gc_usage(i, stat->before_gc_usage_for_pool(i)); | |
| 176 set_after_gc_usage(i, stat->after_gc_usage_for_pool(i)); | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 void GCStatInfo::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) { | |
| 181 MemoryUsage* gc_usage_array; | |
| 182 if (before_gc) { | |
| 183 gc_usage_array = _before_gc_usage_array; | |
| 184 } else { | |
| 185 gc_usage_array = _after_gc_usage_array; | |
| 186 } | |
| 187 gc_usage_array[pool_index] = usage; | |
| 188 } | |
| 189 | |
| 190 GCMemoryManager::GCMemoryManager() : MemoryManager() { | |
| 191 _num_collections = 0; | |
| 192 _last_gc_stat = NULL; | |
| 193 _num_gc_threads = 1; | |
| 194 } | |
| 195 | |
| 196 GCMemoryManager::~GCMemoryManager() { | |
| 197 delete _last_gc_stat; | |
| 198 } | |
| 199 | |
| 200 void GCMemoryManager::initialize_gc_stat_info() { | |
| 201 assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools"); | |
| 202 _last_gc_stat = new GCStatInfo(MemoryService::num_memory_pools()); | |
| 203 } | |
| 204 | |
| 205 void GCMemoryManager::gc_begin() { | |
| 206 assert(_last_gc_stat != NULL, "Just checking"); | |
| 207 _accumulated_timer.start(); | |
| 208 _num_collections++; | |
| 209 _last_gc_stat->set_index(_num_collections); | |
| 210 _last_gc_stat->set_start_time(Management::timestamp()); | |
| 211 | |
| 212 // Keep memory usage of all memory pools | |
| 213 for (int i = 0; i < MemoryService::num_memory_pools(); i++) { | |
| 214 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 215 MemoryUsage usage = pool->get_memory_usage(); | |
| 216 _last_gc_stat->set_before_gc_usage(i, usage); | |
| 217 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin, | |
| 218 name(), strlen(name()), | |
| 219 pool->name(), strlen(pool->name()), | |
| 220 usage.init_size(), usage.used(), | |
| 221 usage.committed(), usage.max_size()); | |
| 222 } | |
| 223 } | |
| 224 | |
| 225 void GCMemoryManager::gc_end() { | |
| 226 _accumulated_timer.stop(); | |
| 227 _last_gc_stat->set_end_time(Management::timestamp()); | |
| 228 | |
| 229 int i; | |
| 230 // keep the last gc statistics for all memory pools | |
| 231 for (i = 0; i < MemoryService::num_memory_pools(); i++) { | |
| 232 MemoryPool* pool = MemoryService::get_memory_pool(i); | |
| 233 MemoryUsage usage = pool->get_memory_usage(); | |
| 234 | |
| 235 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end, | |
| 236 name(), strlen(name()), | |
| 237 pool->name(), strlen(pool->name()), | |
| 238 usage.init_size(), usage.used(), | |
| 239 usage.committed(), usage.max_size()); | |
| 240 | |
| 241 _last_gc_stat->set_after_gc_usage(i, usage); | |
| 242 } | |
| 243 | |
| 244 // Set last collection usage of the memory pools managed by this collector | |
| 245 for (i = 0; i < num_memory_pools(); i++) { | |
| 246 MemoryPool* pool = get_memory_pool(i); | |
| 247 MemoryUsage usage = pool->get_memory_usage(); | |
| 248 | |
| 249 // Compare with GC usage threshold | |
| 250 pool->set_last_collection_usage(usage); | |
| 251 LowMemoryDetector::detect_after_gc_memory(pool); | |
| 252 } | |
| 253 } |