truffle: src/share/vm/services/memoryManager.cpp annotate

annotate src/share/vm/services/memoryManager.cpp @ 6725:da91efe96a93

6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

author	coleenp
date	Sat, 01 Sep 2012 13:25:18 -0400
parents	d2a62e0f25eb
children	dbd5837b342f

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6197 diff changeset	2 * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1089 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1089 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1089 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	26 #include "classfile/systemDictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	27 #include "classfile/vmSymbols.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	28 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	29 #include "runtime/handles.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	30 #include "runtime/javaCalls.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	31 #include "services/lowMemoryDetector.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	32 #include "services/management.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	33 #include "services/memoryManager.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	34 #include "services/memoryPool.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	35 #include "services/memoryService.hpp"
3356 78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	36 #include "services/gcNotifier.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	37 #include "utilities/dtrace.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	38
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	39 #ifndef USDT2
0 a61af66fc99e Initial load duke parents: diff changeset	40 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char, int, char, int,
a61af66fc99e Initial load duke parents: diff changeset	41 size_t, size_t, size_t, size_t);
a61af66fc99e Initial load duke parents: diff changeset	42 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, char, int, char, int,
a61af66fc99e Initial load duke parents: diff changeset	43 size_t, size_t, size_t, size_t);
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	44 #endif /* !USDT2 */
0 a61af66fc99e Initial load duke parents: diff changeset	45
a61af66fc99e Initial load duke parents: diff changeset	46 MemoryManager::MemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	47 _num_pools = 0;
a61af66fc99e Initial load duke parents: diff changeset	48 _memory_mgr_obj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	49 }
a61af66fc99e Initial load duke parents: diff changeset	50
a61af66fc99e Initial load duke parents: diff changeset	51 void MemoryManager::add_pool(MemoryPool* pool) {
a61af66fc99e Initial load duke parents: diff changeset	52 assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max");
a61af66fc99e Initial load duke parents: diff changeset	53 if (_num_pools < MemoryManager::max_num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	54 _pools[_num_pools] = pool;
a61af66fc99e Initial load duke parents: diff changeset	55 _num_pools++;
a61af66fc99e Initial load duke parents: diff changeset	56 }
a61af66fc99e Initial load duke parents: diff changeset	57 pool->add_manager(this);
a61af66fc99e Initial load duke parents: diff changeset	58 }
a61af66fc99e Initial load duke parents: diff changeset	59
a61af66fc99e Initial load duke parents: diff changeset	60 MemoryManager* MemoryManager::get_code_cache_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	61 return (MemoryManager*) new CodeCacheMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	62 }
a61af66fc99e Initial load duke parents: diff changeset	63
a61af66fc99e Initial load duke parents: diff changeset	64 GCMemoryManager* MemoryManager::get_copy_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	65 return (GCMemoryManager*) new CopyMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	66 }
a61af66fc99e Initial load duke parents: diff changeset	67
a61af66fc99e Initial load duke parents: diff changeset	68 GCMemoryManager* MemoryManager::get_msc_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	69 return (GCMemoryManager*) new MSCMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	70 }
a61af66fc99e Initial load duke parents: diff changeset	71
a61af66fc99e Initial load duke parents: diff changeset	72 GCMemoryManager* MemoryManager::get_parnew_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	73 return (GCMemoryManager*) new ParNewMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	74 }
a61af66fc99e Initial load duke parents: diff changeset	75
a61af66fc99e Initial load duke parents: diff changeset	76 GCMemoryManager* MemoryManager::get_cms_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	77 return (GCMemoryManager*) new CMSMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	78 }
a61af66fc99e Initial load duke parents: diff changeset	79
a61af66fc99e Initial load duke parents: diff changeset	80 GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	81 return (GCMemoryManager*) new PSScavengeMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	82 }
a61af66fc99e Initial load duke parents: diff changeset	83
a61af66fc99e Initial load duke parents: diff changeset	84 GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	85 return (GCMemoryManager*) new PSMarkSweepMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	86 }
a61af66fc99e Initial load duke parents: diff changeset	87
1089 db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	88 GCMemoryManager* MemoryManager::get_g1YoungGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	89 return (GCMemoryManager*) new G1YoungGenMemoryManager();
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	90 }
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	91
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	92 GCMemoryManager* MemoryManager::get_g1OldGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	93 return (GCMemoryManager*) new G1OldGenMemoryManager();
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	94 }
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	95
0 a61af66fc99e Initial load duke parents: diff changeset	96 instanceOop MemoryManager::get_memory_manager_instance(TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	97 // Must do an acquire so as to force ordering of subsequent
a61af66fc99e Initial load duke parents: diff changeset	98 // loads from anything _memory_mgr_obj points to or implies.
a61af66fc99e Initial load duke parents: diff changeset	99 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	100 if (mgr_obj == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	101 // It's ok for more than one thread to execute the code up to the locked region.
a61af66fc99e Initial load duke parents: diff changeset	102 // Extra manager instances will just be gc'ed.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6197 diff changeset	103 Klass* k = Management::sun_management_ManagementFactory_klass(CHECK_0);
0 a61af66fc99e Initial load duke parents: diff changeset	104 instanceKlassHandle ik(THREAD, k);
a61af66fc99e Initial load duke parents: diff changeset	105
a61af66fc99e Initial load duke parents: diff changeset	106 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	107
a61af66fc99e Initial load duke parents: diff changeset	108 JavaValue result(T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	109 JavaCallArguments args;
a61af66fc99e Initial load duke parents: diff changeset	110 args.push_oop(mgr_name); // Argument 1
a61af66fc99e Initial load duke parents: diff changeset	111
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	112 Symbol* method_name = NULL;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	113 Symbol* signature = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	114 if (is_gc_memory_manager()) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	115 method_name = vmSymbols::createGarbageCollector_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	116 signature = vmSymbols::createGarbageCollector_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	117 args.push_oop(Handle()); // Argument 2 (for future extension)
a61af66fc99e Initial load duke parents: diff changeset	118 } else {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	119 method_name = vmSymbols::createMemoryManager_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	120 signature = vmSymbols::createMemoryManager_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	121 }
a61af66fc99e Initial load duke parents: diff changeset	122
a61af66fc99e Initial load duke parents: diff changeset	123 JavaCalls::call_static(&result,
a61af66fc99e Initial load duke parents: diff changeset	124 ik,
a61af66fc99e Initial load duke parents: diff changeset	125 method_name,
a61af66fc99e Initial load duke parents: diff changeset	126 signature,
a61af66fc99e Initial load duke parents: diff changeset	127 &args,
a61af66fc99e Initial load duke parents: diff changeset	128 CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	129
a61af66fc99e Initial load duke parents: diff changeset	130 instanceOop m = (instanceOop) result.get_jobject();
a61af66fc99e Initial load duke parents: diff changeset	131 instanceHandle mgr(THREAD, m);
a61af66fc99e Initial load duke parents: diff changeset	132
a61af66fc99e Initial load duke parents: diff changeset	133 {
a61af66fc99e Initial load duke parents: diff changeset	134 // Get lock before setting _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	135 // since another thread may have created the instance
a61af66fc99e Initial load duke parents: diff changeset	136 MutexLocker ml(Management_lock);
a61af66fc99e Initial load duke parents: diff changeset	137
a61af66fc99e Initial load duke parents: diff changeset	138 // Check if another thread has created the management object. We reload
a61af66fc99e Initial load duke parents: diff changeset	139 // _memory_mgr_obj here because some other thread may have initialized
a61af66fc99e Initial load duke parents: diff changeset	140 // it while we were executing the code before the lock.
a61af66fc99e Initial load duke parents: diff changeset	141 //
a61af66fc99e Initial load duke parents: diff changeset	142 // The lock has done an acquire, so the load can't float above it, but
a61af66fc99e Initial load duke parents: diff changeset	143 // we need to do a load_acquire as above.
a61af66fc99e Initial load duke parents: diff changeset	144 mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	145 if (mgr_obj != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	146 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	147 }
a61af66fc99e Initial load duke parents: diff changeset	148
a61af66fc99e Initial load duke parents: diff changeset	149 // Get the address of the object we created via call_special.
a61af66fc99e Initial load duke parents: diff changeset	150 mgr_obj = mgr();
a61af66fc99e Initial load duke parents: diff changeset	151
a61af66fc99e Initial load duke parents: diff changeset	152 // Use store barrier to make sure the memory accesses associated
a61af66fc99e Initial load duke parents: diff changeset	153 // with creating the management object are visible before publishing
a61af66fc99e Initial load duke parents: diff changeset	154 // its address. The unlock will publish the store to _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	155 // because it does a release first.
a61af66fc99e Initial load duke parents: diff changeset	156 OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	157 }
a61af66fc99e Initial load duke parents: diff changeset	158 }
a61af66fc99e Initial load duke parents: diff changeset	159
a61af66fc99e Initial load duke parents: diff changeset	160 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	161 }
a61af66fc99e Initial load duke parents: diff changeset	162
a61af66fc99e Initial load duke parents: diff changeset	163 void MemoryManager::oops_do(OopClosure* f) {
a61af66fc99e Initial load duke parents: diff changeset	164 f->do_oop((oop*) &_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	165 }
a61af66fc99e Initial load duke parents: diff changeset	166
a61af66fc99e Initial load duke parents: diff changeset	167 GCStatInfo::GCStatInfo(int num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	168 // initialize the arrays for memory usage
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	169 _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools, mtInternal);
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	170 _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools, mtInternal);
0 a61af66fc99e Initial load duke parents: diff changeset	171 _usage_array_size = num_pools;
4092 b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	172 clear();
0 a61af66fc99e Initial load duke parents: diff changeset	173 }
a61af66fc99e Initial load duke parents: diff changeset	174
a61af66fc99e Initial load duke parents: diff changeset	175 GCStatInfo::~GCStatInfo() {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	176 FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array, mtInternal);
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	177 FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array, mtInternal);
0 a61af66fc99e Initial load duke parents: diff changeset	178 }
a61af66fc99e Initial load duke parents: diff changeset	179
a61af66fc99e Initial load duke parents: diff changeset	180 void GCStatInfo::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) {
a61af66fc99e Initial load duke parents: diff changeset	181 MemoryUsage* gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	182 if (before_gc) {
a61af66fc99e Initial load duke parents: diff changeset	183 gc_usage_array = _before_gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	184 } else {
a61af66fc99e Initial load duke parents: diff changeset	185 gc_usage_array = _after_gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	186 }
a61af66fc99e Initial load duke parents: diff changeset	187 gc_usage_array[pool_index] = usage;
a61af66fc99e Initial load duke parents: diff changeset	188 }
a61af66fc99e Initial load duke parents: diff changeset	189
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	190 void GCStatInfo::clear() {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	191 _index = 0;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	192 _start_time = 0L;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	193 _end_time = 0L;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	194 size_t len = _usage_array_size * sizeof(MemoryUsage);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	195 memset(_before_gc_usage_array, 0, len);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	196 memset(_after_gc_usage_array, 0, len);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	197 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	198
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	199
0 a61af66fc99e Initial load duke parents: diff changeset	200 GCMemoryManager::GCMemoryManager() : MemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	201 _num_collections = 0;
a61af66fc99e Initial load duke parents: diff changeset	202 _last_gc_stat = NULL;
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	203 _last_gc_lock = new Mutex(Mutex::leaf, "_last_gc_lock", true);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	204 _current_gc_stat = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	205 _num_gc_threads = 1;
3356 78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	206 _notification_enabled = false;
0 a61af66fc99e Initial load duke parents: diff changeset	207 }
a61af66fc99e Initial load duke parents: diff changeset	208
a61af66fc99e Initial load duke parents: diff changeset	209 GCMemoryManager::~GCMemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	210 delete _last_gc_stat;
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	211 delete _last_gc_lock;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	212 delete _current_gc_stat;
0 a61af66fc99e Initial load duke parents: diff changeset	213 }
a61af66fc99e Initial load duke parents: diff changeset	214
a61af66fc99e Initial load duke parents: diff changeset	215 void GCMemoryManager::initialize_gc_stat_info() {
a61af66fc99e Initial load duke parents: diff changeset	216 assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools");
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	217 _last_gc_stat = new(ResourceObj::C_HEAP, mtGC) GCStatInfo(MemoryService::num_memory_pools());
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4844 diff changeset	218 _current_gc_stat = new(ResourceObj::C_HEAP, mtGC) GCStatInfo(MemoryService::num_memory_pools());
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	219 // tracking concurrent collections we need two objects: one to update, and one to
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	220 // hold the publicly available "last (completed) gc" information.
0 a61af66fc99e Initial load duke parents: diff changeset	221 }
a61af66fc99e Initial load duke parents: diff changeset	222
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	223 void GCMemoryManager::gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	224 bool recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	225 assert(_last_gc_stat != NULL && _current_gc_stat != NULL, "Just checking");
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	226 if (recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	227 _accumulated_timer.start();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	228 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	229 // _num_collections now increases in gc_end, to count completed collections
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	230 if (recordGCBeginTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	231 _current_gc_stat->set_index(_num_collections+1);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	232 _current_gc_stat->set_start_time(Management::timestamp());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	233 }
0 a61af66fc99e Initial load duke parents: diff changeset	234
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	235 if (recordPreGCUsage) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	236 // Keep memory usage of all memory pools
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	237 for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	238 MemoryPool* pool = MemoryService::get_memory_pool(i);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	239 MemoryUsage usage = pool->get_memory_usage();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	240 _current_gc_stat->set_before_gc_usage(i, usage);
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	241 #ifndef USDT2
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	242 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	243 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	244 pool->name(), strlen(pool->name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	245 usage.init_size(), usage.used(),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	246 usage.committed(), usage.max_size());
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	247 #else /* USDT2 */
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	248 HOTSPOT_MEM_POOL_GC_BEGIN(
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	249 (char *) name(), strlen(name()),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	250 (char *) pool->name(), strlen(pool->name()),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	251 usage.init_size(), usage.used(),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	252 usage.committed(), usage.max_size());
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	253 #endif /* USDT2 */
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	254 }
0 a61af66fc99e Initial load duke parents: diff changeset	255 }
a61af66fc99e Initial load duke parents: diff changeset	256 }
a61af66fc99e Initial load duke parents: diff changeset	257
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	258 // A collector MUST, even if it does not complete for some reason,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	259 // make a TraceMemoryManagerStats object where countCollection is true,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	260 // to ensure the current gc stat is placed in _last_gc_stat.
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	261 void GCMemoryManager::gc_end(bool recordPostGCUsage,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	262 bool recordAccumulatedGCTime,
3356 78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	263 bool recordGCEndTime, bool countCollection,
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	264 GCCause::Cause cause) {
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	265 if (recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	266 _accumulated_timer.stop();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	267 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	268 if (recordGCEndTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	269 _current_gc_stat->set_end_time(Management::timestamp());
0 a61af66fc99e Initial load duke parents: diff changeset	270 }
a61af66fc99e Initial load duke parents: diff changeset	271
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	272 if (recordPostGCUsage) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	273 int i;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	274 // keep the last gc statistics for all memory pools
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	275 for (i = 0; i < MemoryService::num_memory_pools(); i++) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	276 MemoryPool* pool = MemoryService::get_memory_pool(i);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	277 MemoryUsage usage = pool->get_memory_usage();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	278
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	279 #ifndef USDT2
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	280 HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	281 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	282 pool->name(), strlen(pool->name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	283 usage.init_size(), usage.used(),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	284 usage.committed(), usage.max_size());
4006 436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	285 #else /* USDT2 */
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	286 HOTSPOT_MEM_POOL_GC_END(
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	287 (char *) name(), strlen(name()),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	288 (char *) pool->name(), strlen(pool->name()),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	289 usage.init_size(), usage.used(),
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	290 usage.committed(), usage.max_size());
436b4a3231bf 7098194: integrate macosx-port changes dcubed parents: 3356 diff changeset	291 #endif /* USDT2 */
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	292
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	293 _current_gc_stat->set_after_gc_usage(i, usage);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	294 }
0 a61af66fc99e Initial load duke parents: diff changeset	295
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	296 // Set last collection usage of the memory pools managed by this collector
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	297 for (i = 0; i < num_memory_pools(); i++) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	298 MemoryPool* pool = get_memory_pool(i);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	299 MemoryUsage usage = pool->get_memory_usage();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	300
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	301 // Compare with GC usage threshold
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	302 pool->set_last_collection_usage(usage);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	303 LowMemoryDetector::detect_after_gc_memory(pool);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	304 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	305 }
4092 b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	306
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	307 if (countCollection) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	308 _num_collections++;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	309 // alternately update two objects making one public when complete
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	310 {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	311 MutexLockerEx ml(_last_gc_lock, Mutex::_no_safepoint_check_flag);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	312 GCStatInfo *tmp = _last_gc_stat;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	313 _last_gc_stat = _current_gc_stat;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	314 _current_gc_stat = tmp;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	315 // reset the current stat for diagnosability purposes
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	316 _current_gc_stat->clear();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	317 }
4092 b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	318
b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	319 if (is_notification_enabled()) {
b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	320 bool isMajorGC = this == MemoryService::get_major_gc_manager();
b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	321 GCNotifier::pushNotification(this, isMajorGC ? "end of major GC" : "end of minor GC",
b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	322 GCCause::to_string(cause));
b5a5f30c483d 7110173: GCNotifier::pushNotification publishes stale data. johnc parents: 4006 diff changeset	323 }
0 a61af66fc99e Initial load duke parents: diff changeset	324 }
a61af66fc99e Initial load duke parents: diff changeset	325 }
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	326
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	327 size_t GCMemoryManager::get_last_gc_stat(GCStatInfo* dest) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	328 MutexLockerEx ml(_last_gc_lock, Mutex::_no_safepoint_check_flag);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	329 if (_last_gc_stat->gc_index() != 0) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	330 dest->set_index(_last_gc_stat->gc_index());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	331 dest->set_start_time(_last_gc_stat->start_time());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	332 dest->set_end_time(_last_gc_stat->end_time());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	333 assert(dest->usage_array_size() == _last_gc_stat->usage_array_size(),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	334 "Must have same array size");
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	335 size_t len = dest->usage_array_size() * sizeof(MemoryUsage);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	336 memcpy(dest->before_gc_usage_array(), _last_gc_stat->before_gc_usage_array(), len);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	337 memcpy(dest->after_gc_usage_array(), _last_gc_stat->after_gc_usage_array(), len);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	338 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	339 return _last_gc_stat->gc_index();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	340 }

Mercurial > hg > truffle

annotate src/share/vm/services/memoryManager.cpp @ 6725:da91efe96a93