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

annotate src/share/vm/services/memoryManager.cpp @ 2426:1d1603768966

7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass Summary: Update the copyright to be 2010 on all changed files in OpenJDK Reviewed-by: ohair

author	trims
date	Tue, 05 Apr 2011 14:12:31 -0700
parents	3582bf76420e
children	78542e2b5e35

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"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1703 diff changeset	36 #include "utilities/dtrace.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	37
a61af66fc99e Initial load duke parents: diff changeset	38 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__begin, char, int, char, int,
a61af66fc99e Initial load duke parents: diff changeset	39 size_t, size_t, size_t, size_t);
a61af66fc99e Initial load duke parents: diff changeset	40 HS_DTRACE_PROBE_DECL8(hotspot, mem__pool__gc__end, 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
a61af66fc99e Initial load duke parents: diff changeset	43 MemoryManager::MemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	44 _num_pools = 0;
a61af66fc99e Initial load duke parents: diff changeset	45 _memory_mgr_obj = NULL;
a61af66fc99e Initial load duke parents: diff changeset	46 }
a61af66fc99e Initial load duke parents: diff changeset	47
a61af66fc99e Initial load duke parents: diff changeset	48 void MemoryManager::add_pool(MemoryPool* pool) {
a61af66fc99e Initial load duke parents: diff changeset	49 assert(_num_pools < MemoryManager::max_num_pools, "_num_pools exceeds the max");
a61af66fc99e Initial load duke parents: diff changeset	50 if (_num_pools < MemoryManager::max_num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	51 _pools[_num_pools] = pool;
a61af66fc99e Initial load duke parents: diff changeset	52 _num_pools++;
a61af66fc99e Initial load duke parents: diff changeset	53 }
a61af66fc99e Initial load duke parents: diff changeset	54 pool->add_manager(this);
a61af66fc99e Initial load duke parents: diff changeset	55 }
a61af66fc99e Initial load duke parents: diff changeset	56
a61af66fc99e Initial load duke parents: diff changeset	57 MemoryManager* MemoryManager::get_code_cache_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	58 return (MemoryManager*) new CodeCacheMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	59 }
a61af66fc99e Initial load duke parents: diff changeset	60
a61af66fc99e Initial load duke parents: diff changeset	61 GCMemoryManager* MemoryManager::get_copy_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	62 return (GCMemoryManager*) new CopyMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	63 }
a61af66fc99e Initial load duke parents: diff changeset	64
a61af66fc99e Initial load duke parents: diff changeset	65 GCMemoryManager* MemoryManager::get_msc_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	66 return (GCMemoryManager*) new MSCMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	67 }
a61af66fc99e Initial load duke parents: diff changeset	68
a61af66fc99e Initial load duke parents: diff changeset	69 GCMemoryManager* MemoryManager::get_parnew_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	70 return (GCMemoryManager*) new ParNewMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	71 }
a61af66fc99e Initial load duke parents: diff changeset	72
a61af66fc99e Initial load duke parents: diff changeset	73 GCMemoryManager* MemoryManager::get_cms_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	74 return (GCMemoryManager*) new CMSMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	75 }
a61af66fc99e Initial load duke parents: diff changeset	76
a61af66fc99e Initial load duke parents: diff changeset	77 GCMemoryManager* MemoryManager::get_psScavenge_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	78 return (GCMemoryManager*) new PSScavengeMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	79 }
a61af66fc99e Initial load duke parents: diff changeset	80
a61af66fc99e Initial load duke parents: diff changeset	81 GCMemoryManager* MemoryManager::get_psMarkSweep_memory_manager() {
a61af66fc99e Initial load duke parents: diff changeset	82 return (GCMemoryManager*) new PSMarkSweepMemoryManager();
a61af66fc99e Initial load duke parents: diff changeset	83 }
a61af66fc99e Initial load duke parents: diff changeset	84
1089 db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	85 GCMemoryManager* MemoryManager::get_g1YoungGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	86 return (GCMemoryManager*) new G1YoungGenMemoryManager();
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	87 }
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 GCMemoryManager* MemoryManager::get_g1OldGen_memory_manager() {
db0d5eba9d20 6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC tonyp parents: 0 diff changeset	90 return (GCMemoryManager*) new G1OldGenMemoryManager();
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
0 a61af66fc99e Initial load duke parents: diff changeset	93 instanceOop MemoryManager::get_memory_manager_instance(TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	94 // Must do an acquire so as to force ordering of subsequent
a61af66fc99e Initial load duke parents: diff changeset	95 // loads from anything _memory_mgr_obj points to or implies.
a61af66fc99e Initial load duke parents: diff changeset	96 instanceOop mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	97 if (mgr_obj == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	98 // It's ok for more than one thread to execute the code up to the locked region.
a61af66fc99e Initial load duke parents: diff changeset	99 // Extra manager instances will just be gc'ed.
a61af66fc99e Initial load duke parents: diff changeset	100 klassOop k = Management::sun_management_ManagementFactory_klass(CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	101 instanceKlassHandle ik(THREAD, k);
a61af66fc99e Initial load duke parents: diff changeset	102
a61af66fc99e Initial load duke parents: diff changeset	103 Handle mgr_name = java_lang_String::create_from_str(name(), CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	104
a61af66fc99e Initial load duke parents: diff changeset	105 JavaValue result(T_OBJECT);
a61af66fc99e Initial load duke parents: diff changeset	106 JavaCallArguments args;
a61af66fc99e Initial load duke parents: diff changeset	107 args.push_oop(mgr_name); // Argument 1
a61af66fc99e Initial load duke parents: diff changeset	108
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	109 Symbol* method_name = NULL;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	110 Symbol* signature = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	111 if (is_gc_memory_manager()) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	112 method_name = vmSymbols::createGarbageCollector_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	113 signature = vmSymbols::createGarbageCollector_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	114 args.push_oop(Handle()); // Argument 2 (for future extension)
a61af66fc99e Initial load duke parents: diff changeset	115 } else {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	116 method_name = vmSymbols::createMemoryManager_name();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	117 signature = vmSymbols::createMemoryManager_signature();
0 a61af66fc99e Initial load duke parents: diff changeset	118 }
a61af66fc99e Initial load duke parents: diff changeset	119
a61af66fc99e Initial load duke parents: diff changeset	120 JavaCalls::call_static(&result,
a61af66fc99e Initial load duke parents: diff changeset	121 ik,
a61af66fc99e Initial load duke parents: diff changeset	122 method_name,
a61af66fc99e Initial load duke parents: diff changeset	123 signature,
a61af66fc99e Initial load duke parents: diff changeset	124 &args,
a61af66fc99e Initial load duke parents: diff changeset	125 CHECK_0);
a61af66fc99e Initial load duke parents: diff changeset	126
a61af66fc99e Initial load duke parents: diff changeset	127 instanceOop m = (instanceOop) result.get_jobject();
a61af66fc99e Initial load duke parents: diff changeset	128 instanceHandle mgr(THREAD, m);
a61af66fc99e Initial load duke parents: diff changeset	129
a61af66fc99e Initial load duke parents: diff changeset	130 {
a61af66fc99e Initial load duke parents: diff changeset	131 // Get lock before setting _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	132 // since another thread may have created the instance
a61af66fc99e Initial load duke parents: diff changeset	133 MutexLocker ml(Management_lock);
a61af66fc99e Initial load duke parents: diff changeset	134
a61af66fc99e Initial load duke parents: diff changeset	135 // Check if another thread has created the management object. We reload
a61af66fc99e Initial load duke parents: diff changeset	136 // _memory_mgr_obj here because some other thread may have initialized
a61af66fc99e Initial load duke parents: diff changeset	137 // it while we were executing the code before the lock.
a61af66fc99e Initial load duke parents: diff changeset	138 //
a61af66fc99e Initial load duke parents: diff changeset	139 // The lock has done an acquire, so the load can't float above it, but
a61af66fc99e Initial load duke parents: diff changeset	140 // we need to do a load_acquire as above.
a61af66fc99e Initial load duke parents: diff changeset	141 mgr_obj = (instanceOop)OrderAccess::load_ptr_acquire(&_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	142 if (mgr_obj != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	143 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	144 }
a61af66fc99e Initial load duke parents: diff changeset	145
a61af66fc99e Initial load duke parents: diff changeset	146 // Get the address of the object we created via call_special.
a61af66fc99e Initial load duke parents: diff changeset	147 mgr_obj = mgr();
a61af66fc99e Initial load duke parents: diff changeset	148
a61af66fc99e Initial load duke parents: diff changeset	149 // Use store barrier to make sure the memory accesses associated
a61af66fc99e Initial load duke parents: diff changeset	150 // with creating the management object are visible before publishing
a61af66fc99e Initial load duke parents: diff changeset	151 // its address. The unlock will publish the store to _memory_mgr_obj
a61af66fc99e Initial load duke parents: diff changeset	152 // because it does a release first.
a61af66fc99e Initial load duke parents: diff changeset	153 OrderAccess::release_store_ptr(&_memory_mgr_obj, mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	154 }
a61af66fc99e Initial load duke parents: diff changeset	155 }
a61af66fc99e Initial load duke parents: diff changeset	156
a61af66fc99e Initial load duke parents: diff changeset	157 return mgr_obj;
a61af66fc99e Initial load duke parents: diff changeset	158 }
a61af66fc99e Initial load duke parents: diff changeset	159
a61af66fc99e Initial load duke parents: diff changeset	160 void MemoryManager::oops_do(OopClosure* f) {
a61af66fc99e Initial load duke parents: diff changeset	161 f->do_oop((oop*) &_memory_mgr_obj);
a61af66fc99e Initial load duke parents: diff changeset	162 }
a61af66fc99e Initial load duke parents: diff changeset	163
a61af66fc99e Initial load duke parents: diff changeset	164 GCStatInfo::GCStatInfo(int num_pools) {
a61af66fc99e Initial load duke parents: diff changeset	165 // initialize the arrays for memory usage
a61af66fc99e Initial load duke parents: diff changeset	166 _before_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools);
a61af66fc99e Initial load duke parents: diff changeset	167 _after_gc_usage_array = (MemoryUsage*) NEW_C_HEAP_ARRAY(MemoryUsage, num_pools);
a61af66fc99e Initial load duke parents: diff changeset	168 size_t len = num_pools * sizeof(MemoryUsage);
a61af66fc99e Initial load duke parents: diff changeset	169 memset(_before_gc_usage_array, 0, len);
a61af66fc99e Initial load duke parents: diff changeset	170 memset(_after_gc_usage_array, 0, len);
a61af66fc99e Initial load duke parents: diff changeset	171 _usage_array_size = num_pools;
a61af66fc99e Initial load duke parents: diff changeset	172 }
a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 GCStatInfo::~GCStatInfo() {
a61af66fc99e Initial load duke parents: diff changeset	175 FREE_C_HEAP_ARRAY(MemoryUsage*, _before_gc_usage_array);
a61af66fc99e Initial load duke parents: diff changeset	176 FREE_C_HEAP_ARRAY(MemoryUsage*, _after_gc_usage_array);
a61af66fc99e Initial load duke parents: diff changeset	177 }
a61af66fc99e Initial load duke parents: diff changeset	178
a61af66fc99e Initial load duke parents: diff changeset	179 void GCStatInfo::set_gc_usage(int pool_index, MemoryUsage usage, bool before_gc) {
a61af66fc99e Initial load duke parents: diff changeset	180 MemoryUsage* gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	181 if (before_gc) {
a61af66fc99e Initial load duke parents: diff changeset	182 gc_usage_array = _before_gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	183 } else {
a61af66fc99e Initial load duke parents: diff changeset	184 gc_usage_array = _after_gc_usage_array;
a61af66fc99e Initial load duke parents: diff changeset	185 }
a61af66fc99e Initial load duke parents: diff changeset	186 gc_usage_array[pool_index] = usage;
a61af66fc99e Initial load duke parents: diff changeset	187 }
a61af66fc99e Initial load duke parents: diff changeset	188
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	189 void GCStatInfo::clear() {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	190 _index = 0;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	191 _start_time = 0L;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	192 _end_time = 0L;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	193 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	194 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	195 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	196 }
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
0 a61af66fc99e Initial load duke parents: diff changeset	199 GCMemoryManager::GCMemoryManager() : MemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	200 _num_collections = 0;
a61af66fc99e Initial load duke parents: diff changeset	201 _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	202 _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	203 _current_gc_stat = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	204 _num_gc_threads = 1;
a61af66fc99e Initial load duke parents: diff changeset	205 }
a61af66fc99e Initial load duke parents: diff changeset	206
a61af66fc99e Initial load duke parents: diff changeset	207 GCMemoryManager::~GCMemoryManager() {
a61af66fc99e Initial load duke parents: diff changeset	208 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	209 delete _last_gc_lock;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	210 delete _current_gc_stat;
0 a61af66fc99e Initial load duke parents: diff changeset	211 }
a61af66fc99e Initial load duke parents: diff changeset	212
a61af66fc99e Initial load duke parents: diff changeset	213 void GCMemoryManager::initialize_gc_stat_info() {
a61af66fc99e Initial load duke parents: diff changeset	214 assert(MemoryService::num_memory_pools() > 0, "should have one or more memory pools");
a61af66fc99e Initial load duke parents: diff changeset	215 _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	216 _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	217 // 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	218 // hold the publicly available "last (completed) gc" information.
0 a61af66fc99e Initial load duke parents: diff changeset	219 }
a61af66fc99e Initial load duke parents: diff changeset	220
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	221 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	222 bool recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	223 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	224 if (recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	225 _accumulated_timer.start();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	226 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	227 // _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	228 if (recordGCBeginTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	229 _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	230 _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	231 }
0 a61af66fc99e Initial load duke parents: diff changeset	232
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	233 if (recordPreGCUsage) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	234 // 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	235 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	236 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	237 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	238 _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	239 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	240 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	241 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	242 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	243 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	244 }
0 a61af66fc99e Initial load duke parents: diff changeset	245 }
a61af66fc99e Initial load duke parents: diff changeset	246 }
a61af66fc99e Initial load duke parents: diff changeset	247
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	248 // 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	249 // 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	250 // 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	251 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	252 bool recordAccumulatedGCTime,
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	253 bool recordGCEndTime, bool countCollection) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	254 if (recordAccumulatedGCTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	255 _accumulated_timer.stop();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	256 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	257 if (recordGCEndTime) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	258 _current_gc_stat->set_end_time(Management::timestamp());
0 a61af66fc99e Initial load duke parents: diff changeset	259 }
a61af66fc99e Initial load duke parents: diff changeset	260
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	261 if (recordPostGCUsage) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	262 int i;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	263 // 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	264 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	265 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	266 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	267
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	268 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	269 name(), strlen(name()),
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	270 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	271 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	272 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	273
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	274 _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	275 }
0 a61af66fc99e Initial load duke parents: diff changeset	276
1703 f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	277 // 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	278 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	279 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	280 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	281
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	282 // 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	283 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	284 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	285 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	286 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	287 if (countCollection) {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	288 _num_collections++;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	289 // 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	290 {
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	291 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	292 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	293 _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	294 _current_gc_stat = tmp;
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	295 // 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	296 _current_gc_stat->clear();
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	297 }
0 a61af66fc99e Initial load duke parents: diff changeset	298 }
a61af66fc99e Initial load duke parents: diff changeset	299 }
1703 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 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	302 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	303 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	304 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	305 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	306 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	307 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	308 "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	309 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	310 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	311 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	312 }
f6f3eef8a521 6581734: CMS Old Gen's collection usage is zero after GC which is incorrect kevinw parents: 1552 diff changeset	313 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	314 }

Mercurial > hg > truffle

annotate src/share/vm/services/memoryManager.cpp @ 2426:1d1603768966