author | mgronlun |
Wed, 03 Jul 2019 11:34:46 +0200 | |
changeset 55571 | 49102ba8cf14 |
parent 50113 | caf115bb98ad |
child 58132 | caa25ab47aca |
child 58154 | 060d9d139109 |
permissions | -rw-r--r-- |
50113 | 1 |
/* |
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
2 |
* Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved. |
50113 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "jfrfiles/jfrTypes.hpp" |
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#include "jfr/leakprofiler/chains/edge.hpp" |
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#include "jfr/leakprofiler/chains/edgeStore.hpp" |
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#include "jfr/leakprofiler/chains/edgeUtils.hpp" |
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#include "jfr/leakprofiler/checkpoint/objectSampleDescription.hpp" |
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#include "jfr/leakprofiler/checkpoint/objectSampleWriter.hpp" |
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#include "jfr/leakprofiler/checkpoint/rootResolver.hpp" |
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#include "jfr/leakprofiler/sampling/objectSampler.hpp" |
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#include "jfr/leakprofiler/utilities/rootType.hpp" |
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35 |
#include "jfr/leakprofiler/utilities/unifiedOop.hpp" |
|
36 |
#include "jfr/recorder/checkpoint/types/jfrTypeSetUtils.hpp" |
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#include "jfr/recorder/checkpoint/types/jfrTypeSetWriter.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/symbol.hpp" |
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40 |
#include "utilities/growableArray.hpp" |
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||
42 |
template <typename Data> |
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class ObjectSampleAuxInfo : public ResourceObj { |
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public: |
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Data _data; |
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traceid _id; |
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ObjectSampleAuxInfo() : _data(), _id(0) {} |
|
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}; |
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49 |
||
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class ObjectSampleArrayData { |
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public: |
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int _array_size; |
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int _array_index; |
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ObjectSampleArrayData() : _array_size(0), _array_index(0) {} |
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}; |
|
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||
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class ObjectSampleFieldInfo : public ResourceObj { |
|
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public: |
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const Symbol* _field_name_symbol; |
|
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jshort _field_modifiers; |
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ObjectSampleFieldInfo() : _field_name_symbol(NULL), _field_modifiers(0) {} |
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}; |
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class ObjectSampleRootDescriptionData { |
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public: |
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const Edge* _root_edge; |
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const char* _description; |
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OldObjectRoot::System _system; |
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OldObjectRoot::Type _type; |
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ObjectSampleRootDescriptionData() : _root_edge(NULL), |
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_description(NULL), |
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_system(OldObjectRoot::_system_undetermined), |
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_type(OldObjectRoot::_type_undetermined) {} |
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}; |
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class OldObjectSampleData { |
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public: |
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oop _object; |
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traceid _reference_id; |
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}; |
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class ReferenceData { |
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public: |
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traceid _field_info_id; |
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traceid _array_info_id; |
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traceid _old_object_sample_id; |
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size_t _skip; |
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}; |
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static int initial_storage_size = 16; |
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template <typename Data> |
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class SampleSet : public ResourceObj { |
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private: |
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GrowableArray<Data>* _storage; |
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public: |
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SampleSet() : _storage(NULL) {} |
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traceid store(Data data) { |
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assert(data != NULL, "invariant"); |
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if (_storage == NULL) { |
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_storage = new GrowableArray<Data>(initial_storage_size); |
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} |
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assert(_storage != NULL, "invariant"); |
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assert(_storage->find(data) == -1, "invariant"); |
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_storage->append(data); |
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return data->_id; |
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} |
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size_t size() const { |
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return _storage != NULL ? (size_t)_storage->length() : 0; |
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} |
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template <typename Functor> |
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void iterate(Functor& functor) { |
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if (_storage != NULL) { |
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for (int i = 0; i < _storage->length(); ++i) { |
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functor(_storage->at(i)); |
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} |
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} |
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} |
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const GrowableArray<Data>& storage() const { |
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return *_storage; |
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} |
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}; |
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typedef ObjectSampleAuxInfo<ObjectSampleArrayData> ObjectSampleArrayInfo; |
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typedef ObjectSampleAuxInfo<ObjectSampleRootDescriptionData> ObjectSampleRootDescriptionInfo; |
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typedef ObjectSampleAuxInfo<OldObjectSampleData> OldObjectSampleInfo; |
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typedef ObjectSampleAuxInfo<ReferenceData> ReferenceInfo; |
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class FieldTable : public ResourceObj { |
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template <typename, |
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typename, |
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template<typename, typename> class, |
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typename, |
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size_t> |
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friend class HashTableHost; |
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typedef HashTableHost<const ObjectSampleFieldInfo*, traceid, Entry, FieldTable, 109> FieldInfoTable; |
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public: |
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typedef FieldInfoTable::HashEntry FieldInfoEntry; |
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private: |
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static traceid _field_id_counter; |
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FieldInfoTable* _table; |
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void assign_id(FieldInfoEntry* entry) { |
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assert(entry != NULL, "invariant"); |
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entry->set_id(++_field_id_counter); |
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} |
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bool equals(const ObjectSampleFieldInfo* query, uintptr_t hash, const FieldInfoEntry* entry) { |
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assert(hash == entry->hash(), "invariant"); |
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assert(query != NULL, "invariant"); |
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const ObjectSampleFieldInfo* stored = entry->literal(); |
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assert(stored != NULL, "invariant"); |
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assert(stored->_field_name_symbol->identity_hash() == query->_field_name_symbol->identity_hash(), "invariant"); |
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return stored->_field_modifiers == query->_field_modifiers; |
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} |
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public: |
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FieldTable() : _table(new FieldInfoTable(this)) {} |
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~FieldTable() { |
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assert(_table != NULL, "invariant"); |
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delete _table; |
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} |
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traceid store(const ObjectSampleFieldInfo* field_info) { |
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assert(field_info != NULL, "invariant"); |
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const FieldInfoEntry& entry =_table->lookup_put(field_info, |
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field_info->_field_name_symbol->identity_hash()); |
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return entry.id(); |
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} |
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size_t size() const { |
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return _table->cardinality(); |
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} |
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template <typename T> |
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void iterate(T& functor) const { |
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_table->iterate_entry<T>(functor); |
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} |
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}; |
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traceid FieldTable::_field_id_counter = 0; |
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typedef SampleSet<const OldObjectSampleInfo*> SampleInfo; |
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typedef SampleSet<const ReferenceInfo*> RefInfo; |
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typedef SampleSet<const ObjectSampleArrayInfo*> ArrayInfo; |
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typedef SampleSet<const ObjectSampleRootDescriptionInfo*> RootDescriptionInfo; |
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static SampleInfo* sample_infos = NULL; |
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static RefInfo* ref_infos = NULL; |
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static ArrayInfo* array_infos = NULL; |
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static FieldTable* field_infos = NULL; |
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static RootDescriptionInfo* root_infos = NULL; |
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int __write_sample_info__(JfrCheckpointWriter* writer, JfrArtifactSet* unused, const void* si) { |
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assert(writer != NULL, "invariant"); |
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assert(si != NULL, "invariant"); |
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const OldObjectSampleInfo* const oosi = (const OldObjectSampleInfo*)si; |
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oop object = oosi->_data._object; |
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assert(object != NULL, "invariant"); |
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writer->write(oosi->_id); |
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writer->write((u8)(const HeapWord*)object); |
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writer->write(const_cast<const Klass*>(object->klass())); |
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ObjectSampleDescription od(object); |
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writer->write(od.description()); |
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writer->write(oosi->_data._reference_id); |
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return 1; |
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} |
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typedef JfrArtifactWriterImplHost<const OldObjectSampleInfo*, __write_sample_info__> SampleWriterImpl; |
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typedef JfrArtifactWriterHost<SampleWriterImpl, TYPE_OLDOBJECT> SampleWriter; |
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static void write_sample_infos(JfrCheckpointWriter& writer) { |
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if (sample_infos != NULL) { |
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SampleWriter sw(&writer, NULL, false); |
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sample_infos->iterate(sw); |
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} |
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} |
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int __write_reference_info__(JfrCheckpointWriter* writer, JfrArtifactSet* unused, const void* ri) { |
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assert(writer != NULL, "invariant"); |
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assert(ri != NULL, "invariant"); |
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const ReferenceInfo* const ref_info = (const ReferenceInfo*)ri; |
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writer->write(ref_info->_id); |
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writer->write(ref_info->_data._array_info_id); |
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writer->write(ref_info->_data._field_info_id); |
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writer->write(ref_info->_data._old_object_sample_id); |
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writer->write<s4>((s4)ref_info->_data._skip); |
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return 1; |
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} |
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typedef JfrArtifactWriterImplHost<const ReferenceInfo*, __write_reference_info__> ReferenceWriterImpl; |
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typedef JfrArtifactWriterHost<ReferenceWriterImpl, TYPE_REFERENCE> ReferenceWriter; |
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239 |
static void write_reference_infos(JfrCheckpointWriter& writer) { |
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if (ref_infos != NULL) { |
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ReferenceWriter rw(&writer, NULL, false); |
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ref_infos->iterate(rw); |
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} |
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} |
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int __write_array_info__(JfrCheckpointWriter* writer, JfrArtifactSet* unused, const void* ai) { |
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assert(writer != NULL, "invariant"); |
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assert(ai != NULL, "invariant"); |
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const ObjectSampleArrayInfo* const osai = (const ObjectSampleArrayInfo*)ai; |
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writer->write(osai->_id); |
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writer->write(osai->_data._array_size); |
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writer->write(osai->_data._array_index); |
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return 1; |
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} |
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static traceid get_array_info_id(const Edge& edge, traceid id) { |
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if (edge.is_root() || !EdgeUtils::is_array_element(edge)) { |
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return 0; |
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} |
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if (array_infos == NULL) { |
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array_infos = new ArrayInfo(); |
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} |
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assert(array_infos != NULL, "invariant"); |
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ObjectSampleArrayInfo* const osai = new ObjectSampleArrayInfo(); |
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assert(osai != NULL, "invariant"); |
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osai->_id = id; |
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osai->_data._array_size = EdgeUtils::array_size(edge); |
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osai->_data._array_index = EdgeUtils::array_index(edge); |
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return array_infos->store(osai); |
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} |
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typedef JfrArtifactWriterImplHost<const ObjectSampleArrayInfo*, __write_array_info__> ArrayWriterImpl; |
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typedef JfrArtifactWriterHost<ArrayWriterImpl, TYPE_OLDOBJECTARRAY> ArrayWriter; |
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276 |
static void write_array_infos(JfrCheckpointWriter& writer) { |
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if (array_infos != NULL) { |
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ArrayWriter aw(&writer, NULL, false); |
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array_infos->iterate(aw); |
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} |
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} |
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int __write_field_info__(JfrCheckpointWriter* writer, JfrArtifactSet* unused, const void* fi) { |
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assert(writer != NULL, "invariant"); |
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assert(fi != NULL, "invariant"); |
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const FieldTable::FieldInfoEntry* field_info_entry = (const FieldTable::FieldInfoEntry*)fi; |
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writer->write(field_info_entry->id()); |
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const ObjectSampleFieldInfo* const osfi = field_info_entry->literal(); |
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writer->write(osfi->_field_name_symbol->as_C_string()); |
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writer->write(osfi->_field_modifiers); |
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return 1; |
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} |
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static traceid get_field_info_id(const Edge& edge) { |
|
295 |
if (edge.is_root()) { |
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return 0; |
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} |
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298 |
||
299 |
assert(!EdgeUtils::is_array_element(edge), "invariant"); |
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const Symbol* const field_name_symbol = EdgeUtils::field_name_symbol(edge); |
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if (field_name_symbol == NULL) { |
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return 0; |
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} |
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304 |
||
305 |
if (field_infos == NULL) { |
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field_infos = new FieldTable(); |
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307 |
} |
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assert(field_infos != NULL, "invariant"); |
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309 |
||
310 |
ObjectSampleFieldInfo* const osfi = new ObjectSampleFieldInfo(); |
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assert(osfi != NULL, "invariant"); |
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osfi->_field_name_symbol = field_name_symbol; |
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osfi->_field_modifiers = EdgeUtils::field_modifiers(edge); |
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return field_infos->store(osfi); |
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} |
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316 |
||
317 |
typedef JfrArtifactWriterImplHost<const FieldTable::FieldInfoEntry*, __write_field_info__> FieldWriterImpl; |
|
318 |
typedef JfrArtifactWriterHost<FieldWriterImpl, TYPE_OLDOBJECTFIELD> FieldWriter; |
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319 |
||
320 |
static void write_field_infos(JfrCheckpointWriter& writer) { |
|
321 |
if (field_infos != NULL) { |
|
322 |
FieldWriter fw(&writer, NULL, false); |
|
323 |
field_infos->iterate(fw); |
|
324 |
} |
|
325 |
} |
|
326 |
||
327 |
static const char* description(const ObjectSampleRootDescriptionInfo* osdi) { |
|
328 |
assert(osdi != NULL, "invariant"); |
|
329 |
||
330 |
if (osdi->_data._description == NULL) { |
|
331 |
return NULL; |
|
332 |
} |
|
333 |
||
334 |
ObjectDescriptionBuilder description; |
|
335 |
if (osdi->_data._system == OldObjectRoot::_threads) { |
|
336 |
description.write_text("Thread Name: "); |
|
337 |
} |
|
338 |
description.write_text(osdi->_data._description); |
|
339 |
return description.description(); |
|
340 |
} |
|
341 |
||
342 |
int __write_root_description_info__(JfrCheckpointWriter* writer, JfrArtifactSet* unused, const void* di) { |
|
343 |
assert(writer != NULL, "invariant"); |
|
344 |
assert(di != NULL, "invariant"); |
|
345 |
const ObjectSampleRootDescriptionInfo* const osdi = (const ObjectSampleRootDescriptionInfo*)di; |
|
346 |
writer->write(osdi->_id); |
|
347 |
writer->write(description(osdi)); |
|
348 |
writer->write<u8>(osdi->_data._system); |
|
349 |
writer->write<u8>(osdi->_data._type); |
|
350 |
return 1; |
|
351 |
} |
|
352 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
353 |
static traceid get_gc_root_description_info_id(const Edge& edge, traceid id) { |
50113 | 354 |
assert(edge.is_root(), "invariant"); |
355 |
if (EdgeUtils::is_leak_edge(edge)) { |
|
356 |
return 0; |
|
357 |
} |
|
358 |
||
359 |
if (root_infos == NULL) { |
|
360 |
root_infos = new RootDescriptionInfo(); |
|
361 |
} |
|
362 |
assert(root_infos != NULL, "invariant"); |
|
363 |
ObjectSampleRootDescriptionInfo* const oodi = new ObjectSampleRootDescriptionInfo(); |
|
364 |
oodi->_id = id; |
|
365 |
oodi->_data._root_edge = &edge; |
|
366 |
return root_infos->store(oodi); |
|
367 |
} |
|
368 |
||
369 |
typedef JfrArtifactWriterImplHost<const ObjectSampleRootDescriptionInfo*, __write_root_description_info__> RootDescriptionWriterImpl; |
|
370 |
typedef JfrArtifactWriterHost<RootDescriptionWriterImpl, TYPE_OLDOBJECTGCROOT> RootDescriptionWriter; |
|
371 |
||
372 |
||
373 |
int _edge_reference_compare_(uintptr_t lhs, uintptr_t rhs) { |
|
374 |
return lhs > rhs ? 1 : (lhs < rhs) ? -1 : 0; |
|
375 |
} |
|
376 |
||
377 |
int _root_desc_compare_(const ObjectSampleRootDescriptionInfo*const & lhs, const ObjectSampleRootDescriptionInfo* const& rhs) { |
|
378 |
const uintptr_t lhs_ref = (uintptr_t)lhs->_data._root_edge->reference(); |
|
379 |
const uintptr_t rhs_ref = (uintptr_t)rhs->_data._root_edge->reference(); |
|
380 |
return _edge_reference_compare_(lhs_ref, rhs_ref); |
|
381 |
} |
|
382 |
||
383 |
static int find_sorted(const RootCallbackInfo& callback_info, |
|
384 |
const GrowableArray<const ObjectSampleRootDescriptionInfo*>* arr, |
|
385 |
int length, |
|
386 |
bool& found) { |
|
387 |
assert(arr != NULL, "invariant"); |
|
388 |
assert(length >= 0, "invariant"); |
|
389 |
assert(length <= arr->length(), "invariant"); |
|
390 |
||
391 |
found = false; |
|
392 |
int min = 0; |
|
393 |
int max = length; |
|
394 |
while (max >= min) { |
|
395 |
const int mid = (int)(((uint)max + min) / 2); |
|
396 |
int diff = _edge_reference_compare_((uintptr_t)callback_info._high, |
|
397 |
(uintptr_t)arr->at(mid)->_data._root_edge->reference()); |
|
398 |
if (diff > 0) { |
|
399 |
min = mid + 1; |
|
400 |
} else if (diff < 0) { |
|
401 |
max = mid - 1; |
|
402 |
} else { |
|
403 |
found = true; |
|
404 |
return mid; |
|
405 |
} |
|
406 |
} |
|
407 |
return min; |
|
408 |
} |
|
409 |
||
410 |
class RootResolutionSet : public ResourceObj, public RootCallback { |
|
411 |
private: |
|
412 |
GrowableArray<const ObjectSampleRootDescriptionInfo*>* _unresolved_roots; |
|
413 |
||
414 |
const uintptr_t high() const { |
|
415 |
return (uintptr_t)_unresolved_roots->last()->_data._root_edge->reference(); |
|
416 |
} |
|
417 |
||
418 |
const uintptr_t low() const { |
|
419 |
return (uintptr_t)_unresolved_roots->first()->_data._root_edge->reference(); |
|
420 |
} |
|
421 |
||
422 |
bool in_set_address_range(const RootCallbackInfo& callback_info) const { |
|
423 |
assert(callback_info._low == NULL, "invariant"); |
|
424 |
const uintptr_t addr = (uintptr_t)callback_info._high; |
|
425 |
return low() <= addr && high() >= addr; |
|
426 |
} |
|
427 |
||
428 |
int compare_to_range(const RootCallbackInfo& callback_info) const { |
|
429 |
assert(callback_info._high != NULL, "invariant"); |
|
430 |
assert(callback_info._low != NULL, "invariant"); |
|
431 |
||
432 |
for (int i = 0; i < _unresolved_roots->length(); ++i) { |
|
433 |
const uintptr_t ref_addr = (uintptr_t)_unresolved_roots->at(i)->_data._root_edge->reference(); |
|
434 |
if ((uintptr_t)callback_info._low <= ref_addr && (uintptr_t)callback_info._high >= ref_addr) { |
|
435 |
return i; |
|
436 |
} |
|
437 |
} |
|
438 |
return -1; |
|
439 |
} |
|
440 |
||
441 |
int exact(const RootCallbackInfo& callback_info) const { |
|
442 |
assert(callback_info._high != NULL, "invariant"); |
|
443 |
assert(in_set_address_range(callback_info), "invariant"); |
|
444 |
||
445 |
bool found; |
|
446 |
const int idx = find_sorted(callback_info, _unresolved_roots, _unresolved_roots->length(), found); |
|
447 |
return found ? idx : -1; |
|
448 |
} |
|
449 |
||
450 |
bool resolve_root(const RootCallbackInfo& callback_info, int idx) const { |
|
451 |
assert(idx >= 0, "invariant"); |
|
452 |
assert(idx < _unresolved_roots->length(), "invariant"); |
|
453 |
||
454 |
ObjectSampleRootDescriptionInfo* const desc = |
|
455 |
const_cast<ObjectSampleRootDescriptionInfo*>(_unresolved_roots->at(idx)); |
|
456 |
assert(desc != NULL, "invariant"); |
|
457 |
assert((uintptr_t)callback_info._high == (uintptr_t)desc->_data._root_edge->reference(), "invariant"); |
|
458 |
||
459 |
desc->_data._system = callback_info._system; |
|
460 |
desc->_data._type = callback_info._type; |
|
461 |
||
462 |
if (callback_info._system == OldObjectRoot::_threads) { |
|
463 |
const JavaThread* jt = (const JavaThread*)callback_info._context; |
|
464 |
assert(jt != NULL, "invariant"); |
|
465 |
desc->_data._description = jt->name(); |
|
466 |
} |
|
467 |
||
468 |
_unresolved_roots->remove_at(idx); |
|
469 |
return _unresolved_roots->is_empty(); |
|
470 |
} |
|
471 |
||
472 |
public: |
|
473 |
RootResolutionSet(RootDescriptionInfo* info) : _unresolved_roots(NULL) { |
|
474 |
assert(info != NULL, "invariant"); |
|
475 |
// construct a sorted copy |
|
476 |
const GrowableArray<const ObjectSampleRootDescriptionInfo*>& info_storage = info->storage(); |
|
477 |
const int length = info_storage.length(); |
|
478 |
_unresolved_roots = new GrowableArray<const ObjectSampleRootDescriptionInfo*>(length); |
|
479 |
assert(_unresolved_roots != NULL, "invariant"); |
|
480 |
||
481 |
for (int i = 0; i < length; ++i) { |
|
482 |
_unresolved_roots->insert_sorted<_root_desc_compare_>(info_storage.at(i)); |
|
483 |
} |
|
484 |
} |
|
485 |
||
486 |
bool process(const RootCallbackInfo& callback_info) { |
|
487 |
if (NULL == callback_info._low) { |
|
488 |
if (in_set_address_range(callback_info)) { |
|
489 |
const int idx = exact(callback_info); |
|
490 |
return idx == -1 ? false : resolve_root(callback_info, idx); |
|
491 |
} |
|
492 |
return false; |
|
493 |
} |
|
494 |
assert(callback_info._low != NULL, "invariant"); |
|
495 |
const int idx = compare_to_range(callback_info); |
|
496 |
return idx == -1 ? false : resolve_root(callback_info, idx); |
|
497 |
} |
|
498 |
||
499 |
int entries() const { |
|
500 |
return _unresolved_roots->length(); |
|
501 |
} |
|
502 |
||
503 |
const void* at(int idx) const { |
|
504 |
assert(idx >= 0, "invariant"); |
|
505 |
assert(idx < _unresolved_roots->length(), "invariant"); |
|
506 |
return _unresolved_roots->at(idx)->_data._root_edge->reference(); |
|
507 |
} |
|
508 |
}; |
|
509 |
||
510 |
static void write_root_descriptors(JfrCheckpointWriter& writer) { |
|
511 |
if (root_infos != NULL) { |
|
512 |
// resolve roots |
|
513 |
RootResolutionSet rrs(root_infos); |
|
514 |
RootResolver::resolve(rrs); |
|
515 |
// write roots |
|
516 |
RootDescriptionWriter rw(&writer, NULL, false); |
|
517 |
root_infos->iterate(rw); |
|
518 |
} |
|
519 |
} |
|
520 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
521 |
static void add_old_object_sample_info(const StoredEdge* current, traceid id) { |
50113 | 522 |
assert(current != NULL, "invariant"); |
523 |
if (sample_infos == NULL) { |
|
524 |
sample_infos = new SampleInfo(); |
|
525 |
} |
|
526 |
assert(sample_infos != NULL, "invariant"); |
|
527 |
OldObjectSampleInfo* const oosi = new OldObjectSampleInfo(); |
|
528 |
assert(oosi != NULL, "invariant"); |
|
529 |
oosi->_id = id; |
|
530 |
oosi->_data._object = current->pointee(); |
|
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
531 |
oosi->_data._reference_id = current->parent() == NULL ? (traceid)0 : id; |
50113 | 532 |
sample_infos->store(oosi); |
533 |
} |
|
534 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
535 |
static void add_reference_info(const StoredEdge* current, traceid id, traceid parent_id) { |
50113 | 536 |
assert(current != NULL, "invariant"); |
537 |
if (ref_infos == NULL) { |
|
538 |
ref_infos = new RefInfo(); |
|
539 |
} |
|
540 |
||
541 |
assert(ref_infos != NULL, "invariant"); |
|
542 |
ReferenceInfo* const ri = new ReferenceInfo(); |
|
543 |
assert(ri != NULL, "invariant"); |
|
544 |
||
545 |
ri->_id = id; |
|
546 |
ri->_data._array_info_id = !current->is_skip_edge() ? get_array_info_id(*current, id) : 0; |
|
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
547 |
ri->_data._field_info_id = ri->_data._array_info_id == 0 && !current->is_skip_edge() ? get_field_info_id(*current) : (traceid)0; |
50113 | 548 |
ri->_data._old_object_sample_id = parent_id; |
549 |
ri->_data._skip = current->skip_length(); |
|
550 |
ref_infos->store(ri); |
|
551 |
} |
|
552 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
553 |
static bool is_gc_root(const StoredEdge* current) { |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
554 |
assert(current != NULL, "invariant"); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
555 |
return current->parent() == NULL && current->gc_root_id() != 0; |
50113 | 556 |
} |
557 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
558 |
static traceid add_gc_root_info(const StoredEdge* root, traceid id) { |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
559 |
assert(root != NULL, "invariant"); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
560 |
assert(is_gc_root(root), "invariant"); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
561 |
return get_gc_root_description_info_id(*root, id); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
562 |
} |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
563 |
|
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
564 |
void ObjectSampleWriter::write(const StoredEdge* edge) { |
50113 | 565 |
assert(edge != NULL, "invariant"); |
566 |
const traceid id = _store->get_id(edge); |
|
567 |
add_old_object_sample_info(edge, id); |
|
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
568 |
const StoredEdge* const parent = edge->parent(); |
50113 | 569 |
if (parent != NULL) { |
570 |
add_reference_info(edge, id, _store->get_id(parent)); |
|
571 |
} else { |
|
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
572 |
if (is_gc_root(edge)) { |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
573 |
assert(edge->gc_root_id() == id, "invariant"); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
574 |
add_gc_root_info(edge, id); |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
575 |
} |
50113 | 576 |
} |
577 |
} |
|
578 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
579 |
ObjectSampleWriter::ObjectSampleWriter(JfrCheckpointWriter& writer, EdgeStore* store) : |
50113 | 580 |
_writer(writer), |
581 |
_store(store) { |
|
582 |
assert(store != NULL, "invariant"); |
|
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
583 |
assert(!store->is_empty(), "invariant"); |
50113 | 584 |
sample_infos = NULL; |
585 |
ref_infos = NULL; |
|
586 |
array_infos = NULL; |
|
587 |
field_infos = NULL; |
|
588 |
root_infos = NULL; |
|
589 |
} |
|
590 |
||
591 |
ObjectSampleWriter::~ObjectSampleWriter() { |
|
592 |
write_sample_infos(_writer); |
|
593 |
write_reference_infos(_writer); |
|
594 |
write_array_infos(_writer); |
|
595 |
write_field_infos(_writer); |
|
596 |
write_root_descriptors(_writer); |
|
597 |
} |
|
598 |
||
55571
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
599 |
bool ObjectSampleWriter::operator()(StoredEdge& e) { |
49102ba8cf14
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
mgronlun
parents:
50113
diff
changeset
|
600 |
write(&e); |
50113 | 601 |
return true; |
602 |
} |