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

annotate src/share/vm/services/memoryManager.cpp @ 3356:78542e2b5e35

7036199: Adding a notification to the implementation of GarbageCollectorMXBeans Summary: Add a notification to the GarbageCollectorMXBeans Reviewed-by: acorn, mchung

author	fparain
date	Thu, 12 May 2011 10:30:11 -0700
parents	1d1603768966
children	436b4a3231bf

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2426 1d1603768966 7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass trims parents: 2177 diff changeset	2 * Copyright (c) 2003, 2011, 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
a61af66fc99e Initial load duke parents: diff changeset	39 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char, int, char, int,
a61af66fc99e Initial load duke parents: diff changeset	40 size_t, size_t, size_t, size_t);
a61af66fc99e Initial load duke parents: diff changeset	41 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, char, int, char, int,
a61af66fc99e Initial load duke parents: diff changeset	42 size_t, size_t, size_t, size_t);
a61af66fc99e Initial load duke parents: diff changeset	43
a61af66fc99e Initial load duke parents: diff changeset	44 MemoryManager::MemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	45 _num_pools = 0;
a61af66fc99e Initial load duke parents: diff changeset	46 _memory_mgr_obj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	47 }
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 void MemoryManager::add_pool(MemoryPool* pool) {
a61af66fc99e Initial load duke parents: diff changeset	50 assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max");
a61af66fc99e Initial load duke parents: diff changeset	51 if (_num_pools < MemoryManager::max_num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	52 _pools[_num_pools] = pool;
a61af66fc99e Initial load duke parents: diff changeset	53 _num_pools++;
a61af66fc99e Initial load duke parents: diff changeset	54 }
a61af66fc99e Initial load duke parents: diff changeset	55 pool->add_manager(this);
a61af66fc99e Initial load duke parents: diff changeset	56 }
a61af66fc99e Initial load duke parents: diff changeset	57
a61af66fc99e Initial load duke parents: diff changeset	58 MemoryManager* MemoryManager::get_code_cache_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	59 return (MemoryManager*) new CodeCacheMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	60 }
a61af66fc99e Initial load duke parents: diff changeset	61
a61af66fc99e Initial load duke parents: diff changeset	62 GCMemoryManager* MemoryManager::get_copy_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	63 return (GCMemoryManager*) new CopyMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	64 }
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66 GCMemoryManager* MemoryManager::get_msc_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	67 return (GCMemoryManager*) new MSCMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	68 }
a61af66fc99e Initial load duke parents: diff changeset	69
a61af66fc99e Initial load duke parents: diff changeset	70 GCMemoryManager* MemoryManager::get_parnew_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	71 return (GCMemoryManager*) new ParNewMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	72 }
a61af66fc99e Initial load duke parents: diff changeset	73
a61af66fc99e Initial load duke parents: diff changeset	74 GCMemoryManager* MemoryManager::get_cms_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	75 return (GCMemoryManager*) new CMSMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	76 }
a61af66fc99e Initial load duke parents: diff changeset	77
a61af66fc99e Initial load duke parents: diff changeset	78 GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	79 return (GCMemoryManager*) new PSScavengeMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	80 }
a61af66fc99e Initial load duke parents: diff changeset	81
a61af66fc99e Initial load duke parents: diff changeset	82 GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	83 return (GCMemoryManager*) new PSMarkSweepMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	84 }
a61af66fc99e Initial load duke parents: diff changeset	85
1089 db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	86 GCMemoryManager* MemoryManager::get_g1YoungGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	87 return (GCMemoryManager*) new G1YoungGenMemoryManager();
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	88 }
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	89
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	90 GCMemoryManager* MemoryManager::get_g1OldGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	91 return (GCMemoryManager*) new G1OldGenMemoryManager();
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	92 }
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	93
0 a61af66fc99e Initial load duke parents: diff changeset	94 instanceOop MemoryManager::get_memory_manager_instance(TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	95 // Must do an acquire so as to force ordering of subsequent
a61af66fc99e Initial load duke parents: diff changeset	96 // loads from anything _memory_mgr_obj points to or implies.
a61af66fc99e Initial load duke parents: diff changeset	97 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	98 if (mgr_obj == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	99 // It's ok for more than one thread to execute the code up to the locked region.
a61af66fc99e Initial load duke parents: diff changeset	100 // Extra manager instances will just be gc'ed.
a61af66fc99e Initial load duke parents: diff changeset	101 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	102 instanceKlassHandle ik(THREAD, k);
a61af66fc99e Initial load duke parents: diff changeset	103
a61af66fc99e Initial load duke parents: diff changeset	104 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	105
a61af66fc99e Initial load duke parents: diff changeset	106 JavaValue result(T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	107 JavaCallArguments args;
a61af66fc99e Initial load duke parents: diff changeset	108 args.push_oop(mgr_name); // Argument 1
a61af66fc99e Initial load duke parents: diff changeset	109
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	110 Symbol* method_name = NULL;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	111 Symbol* signature = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	112 if (is_gc_memory_manager()) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	113 method_name = vmSymbols::createGarbageCollector_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	114 signature = vmSymbols::createGarbageCollector_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	115 args.push_oop(Handle()); // Argument 2 (for future extension)
a61af66fc99e Initial load duke parents: diff changeset	116 } else {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	117 method_name = vmSymbols::createMemoryManager_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	118 signature = vmSymbols::createMemoryManager_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	119 }
a61af66fc99e Initial load duke parents: diff changeset	120
a61af66fc99e Initial load duke parents: diff changeset	121 JavaCalls::call_static(&result,
a61af66fc99e Initial load duke parents: diff changeset	122 ik,
a61af66fc99e Initial load duke parents: diff changeset	123 method_name,
a61af66fc99e Initial load duke parents: diff changeset	124 signature,
a61af66fc99e Initial load duke parents: diff changeset	125 &args,
a61af66fc99e Initial load duke parents: diff changeset	126 CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	127
a61af66fc99e Initial load duke parents: diff changeset	128 instanceOop m = (instanceOop) result.get_jobject();
a61af66fc99e Initial load duke parents: diff changeset	129 instanceHandle mgr(THREAD, m);
a61af66fc99e Initial load duke parents: diff changeset	130
a61af66fc99e Initial load duke parents: diff changeset	131 {
a61af66fc99e Initial load duke parents: diff changeset	132 // Get lock before setting _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	133 // since another thread may have created the instance
a61af66fc99e Initial load duke parents: diff changeset	134 MutexLocker ml(Management_lock);
a61af66fc99e Initial load duke parents: diff changeset	135
a61af66fc99e Initial load duke parents: diff changeset	136 // Check if another thread has created the management object. We reload
a61af66fc99e Initial load duke parents: diff changeset	137 // _memory_mgr_obj here because some other thread may have initialized
a61af66fc99e Initial load duke parents: diff changeset	138 // it while we were executing the code before the lock.
a61af66fc99e Initial load duke parents: diff changeset	139 //
a61af66fc99e Initial load duke parents: diff changeset	140 // The lock has done an acquire, so the load can't float above it, but
a61af66fc99e Initial load duke parents: diff changeset	141 // we need to do a load_acquire as above.
a61af66fc99e Initial load duke parents: diff changeset	142 mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	143 if (mgr_obj != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	144 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	145 }
a61af66fc99e Initial load duke parents: diff changeset	146
a61af66fc99e Initial load duke parents: diff changeset	147 // Get the address of the object we created via call_special.
a61af66fc99e Initial load duke parents: diff changeset	148 mgr_obj = mgr();
a61af66fc99e Initial load duke parents: diff changeset	149
a61af66fc99e Initial load duke parents: diff changeset	150 // Use store barrier to make sure the memory accesses associated
a61af66fc99e Initial load duke parents: diff changeset	151 // with creating the management object are visible before publishing
a61af66fc99e Initial load duke parents: diff changeset	152 // its address. The unlock will publish the store to _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	153 // because it does a release first.
a61af66fc99e Initial load duke parents: diff changeset	154 OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	155 }
a61af66fc99e Initial load duke parents: diff changeset	156 }
a61af66fc99e Initial load duke parents: diff changeset	157
a61af66fc99e Initial load duke parents: diff changeset	158 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	159 }
a61af66fc99e Initial load duke parents: diff changeset	160
a61af66fc99e Initial load duke parents: diff changeset	161 void MemoryManager::oops_do(OopClosure* f) {
a61af66fc99e Initial load duke parents: diff changeset	162 f->do_oop((oop*) &_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	163 }
a61af66fc99e Initial load duke parents: diff changeset	164
a61af66fc99e Initial load duke parents: diff changeset	165 GCStatInfo::GCStatInfo(int num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	166 // initialize the arrays for memory usage
a61af66fc99e Initial load duke parents: diff changeset	167 _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools);
a61af66fc99e Initial load duke parents: diff changeset	168 _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools);
a61af66fc99e Initial load duke parents: diff changeset	169 size_t len = num_pools * sizeof(MemoryUsage);
a61af66fc99e Initial load duke parents: diff changeset	170 memset(_before_gc_usage_array, 0, len);
a61af66fc99e Initial load duke parents: diff changeset	171 memset(_after_gc_usage_array, 0, len);
a61af66fc99e Initial load duke parents: diff changeset	172 _usage_array_size = num_pools;
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() {
a61af66fc99e Initial load duke parents: diff changeset	176 FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array);
a61af66fc99e Initial load duke parents: diff changeset	177 FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array);
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");
a61af66fc99e Initial load duke parents: diff changeset	217 _last_gc_stat = new 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	218 _current_gc_stat = new GCStatInfo(MemoryService::num_memory_pools());
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);
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	241 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	242 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	243 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	244 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	245 usage.committed(), usage.max_size());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	246 }
0 a61af66fc99e Initial load duke parents: diff changeset	247 }
a61af66fc99e Initial load duke parents: diff changeset	248 }
a61af66fc99e Initial load duke parents: diff changeset	249
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	250 // 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	251 // 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	252 // 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	253 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	254 bool recordAccumulatedGCTime,
3356 78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	255 bool recordGCEndTime, bool countCollection,
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	256 GCCause::Cause cause) {
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	257 if (recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	258 _accumulated_timer.stop();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	259 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	260 if (recordGCEndTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	261 _current_gc_stat->set_end_time(Management::timestamp());
0 a61af66fc99e Initial load duke parents: diff changeset	262 }
a61af66fc99e Initial load duke parents: diff changeset	263
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	264 if (recordPostGCUsage) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	265 int i;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	266 // 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	267 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	268 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	269 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	270
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	271 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	272 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	273 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	274 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	275 usage.committed(), usage.max_size());
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	276
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	277 _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	278 }
0 a61af66fc99e Initial load duke parents: diff changeset	279
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	280 // 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	281 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	282 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	283 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	284
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	285 // 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	286 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	287 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	288 }
3356 78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	289 if(is_notification_enabled()) {
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	290 bool isMajorGC = this == MemoryService::get_major_gc_manager();
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	291 GCNotifier::pushNotification(this, isMajorGC ? "end of major GC" : "end of minor GC",
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	292 GCCause::to_string(cause));
78542e2b5e35 7036199: Adding a notification to the implementation of GarbageCollectorMXBeans fparain parents: 2426 diff changeset	293 }
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	294 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	295 if (countCollection) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	296 _num_collections++;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	297 // 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	298 {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	299 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	300 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	301 _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	302 _current_gc_stat = tmp;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	303 // 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	304 _current_gc_stat->clear();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	305 }
0 a61af66fc99e Initial load duke parents: diff changeset	306 }
a61af66fc99e Initial load duke parents: diff changeset	307 }
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	308
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	309 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	310 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	311 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	312 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	313 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	314 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	315 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	316 "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	317 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	318 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	319 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	320 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	321 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	322 }

Mercurial > hg > truffle

annotate src/share/vm/services/memoryManager.cpp @ 3356:78542e2b5e35