author | lfoltan |
Mon, 21 Oct 2019 13:13:16 -0400 | |
changeset 58722 | cba8afa5cfed |
parent 55629 | 29e522153769 |
child 59153 | 1152339c298a |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved. |
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* 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 "classfile/classLoaderData.inline.hpp" |
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#include "classfile/classLoaderDataGraph.hpp" |
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#include "classfile/moduleEntry.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "gc/shared/collectedHeap.hpp" |
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#include "memory/heapInspection.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "memory/universe.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/reflectionAccessorImplKlassHelper.hpp" |
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#include "runtime/os.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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#include "utilities/macros.hpp" |
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#include "utilities/stack.inline.hpp" |
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// HeapInspection |
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int KlassSizeStats::count(oop x) { |
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return (HeapWordSize * (((x) != NULL) ? (x)->size() : 0)); |
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} |
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int KlassSizeStats::count_array(objArrayOop x) { |
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return (HeapWordSize * (((x) != NULL) ? (x)->size() : 0)); |
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} |
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inline KlassInfoEntry::~KlassInfoEntry() { |
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if (_subclasses != NULL) { |
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delete _subclasses; |
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} |
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} |
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inline void KlassInfoEntry::add_subclass(KlassInfoEntry* cie) { |
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if (_subclasses == NULL) { |
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_subclasses = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<KlassInfoEntry*>(4, true); |
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} |
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_subclasses->append(cie); |
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} |
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int KlassInfoEntry::compare(KlassInfoEntry* e1, KlassInfoEntry* e2) { |
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if(e1->_instance_words > e2->_instance_words) { |
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return -1; |
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} else if(e1->_instance_words < e2->_instance_words) { |
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return 1; |
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} |
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// Sort alphabetically, note 'Z' < '[' < 'a', but it's better to group |
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// the array classes before all the instance classes. |
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ResourceMark rm; |
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const char* name1 = e1->klass()->external_name(); |
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const char* name2 = e2->klass()->external_name(); |
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bool d1 = (name1[0] == JVM_SIGNATURE_ARRAY); |
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bool d2 = (name2[0] == JVM_SIGNATURE_ARRAY); |
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if (d1 && !d2) { |
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return -1; |
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} else if (d2 && !d1) { |
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return 1; |
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} else { |
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return strcmp(name1, name2); |
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} |
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} |
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const char* KlassInfoEntry::name() const { |
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const char* name; |
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if (_klass->name() != NULL) { |
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name = _klass->external_name(); |
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} else { |
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if (_klass == Universe::boolArrayKlassObj()) name = "<boolArrayKlass>"; else |
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if (_klass == Universe::charArrayKlassObj()) name = "<charArrayKlass>"; else |
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if (_klass == Universe::floatArrayKlassObj()) name = "<floatArrayKlass>"; else |
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if (_klass == Universe::doubleArrayKlassObj()) name = "<doubleArrayKlass>"; else |
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if (_klass == Universe::byteArrayKlassObj()) name = "<byteArrayKlass>"; else |
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if (_klass == Universe::shortArrayKlassObj()) name = "<shortArrayKlass>"; else |
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if (_klass == Universe::intArrayKlassObj()) name = "<intArrayKlass>"; else |
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if (_klass == Universe::longArrayKlassObj()) name = "<longArrayKlass>"; else |
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name = "<no name>"; |
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} |
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return name; |
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} |
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void KlassInfoEntry::print_on(outputStream* st) const { |
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ResourceMark rm; |
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// simplify the formatting (ILP32 vs LP64) - always cast the numbers to 64-bit |
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ModuleEntry* module = _klass->module(); |
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if (module->is_named()) { |
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st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s (%s@%s)", |
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(int64_t)_instance_count, |
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(uint64_t)_instance_words * HeapWordSize, |
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name(), |
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module->name()->as_C_string(), |
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module->version() != NULL ? module->version()->as_C_string() : ""); |
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} else { |
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st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s", |
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(int64_t)_instance_count, |
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(uint64_t)_instance_words * HeapWordSize, |
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name()); |
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} |
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} |
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KlassInfoEntry* KlassInfoBucket::lookup(Klass* const k) { |
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// Can happen if k is an archived class that we haven't loaded yet. |
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if (k->java_mirror_no_keepalive() == NULL) { |
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return NULL; |
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} |
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KlassInfoEntry* elt = _list; |
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while (elt != NULL) { |
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if (elt->is_equal(k)) { |
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return elt; |
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} |
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elt = elt->next(); |
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} |
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elt = new (std::nothrow) KlassInfoEntry(k, list()); |
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// We may be out of space to allocate the new entry. |
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if (elt != NULL) { |
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set_list(elt); |
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} |
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return elt; |
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} |
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void KlassInfoBucket::iterate(KlassInfoClosure* cic) { |
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KlassInfoEntry* elt = _list; |
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while (elt != NULL) { |
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cic->do_cinfo(elt); |
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elt = elt->next(); |
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} |
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} |
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void KlassInfoBucket::empty() { |
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KlassInfoEntry* elt = _list; |
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_list = NULL; |
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while (elt != NULL) { |
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KlassInfoEntry* next = elt->next(); |
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delete elt; |
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elt = next; |
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} |
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} |
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class KlassInfoTable::AllClassesFinder : public LockedClassesDo { |
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KlassInfoTable *_table; |
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public: |
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AllClassesFinder(KlassInfoTable* table) : _table(table) {} |
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virtual void do_klass(Klass* k) { |
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// This has the SIDE EFFECT of creating a KlassInfoEntry |
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// for <k>, if one doesn't exist yet. |
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_table->lookup(k); |
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} |
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}; |
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KlassInfoTable::KlassInfoTable(bool add_all_classes) { |
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_size_of_instances_in_words = 0; |
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_ref = (HeapWord*) Universe::boolArrayKlassObj(); |
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_buckets = |
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(KlassInfoBucket*) AllocateHeap(sizeof(KlassInfoBucket) * _num_buckets, |
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mtInternal, CURRENT_PC, AllocFailStrategy::RETURN_NULL); |
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if (_buckets != NULL) { |
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for (int index = 0; index < _num_buckets; index++) { |
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_buckets[index].initialize(); |
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} |
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if (add_all_classes) { |
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AllClassesFinder finder(this); |
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ClassLoaderDataGraph::classes_do(&finder); |
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} |
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} |
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} |
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KlassInfoTable::~KlassInfoTable() { |
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if (_buckets != NULL) { |
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for (int index = 0; index < _num_buckets; index++) { |
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_buckets[index].empty(); |
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} |
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FREE_C_HEAP_ARRAY(KlassInfoBucket, _buckets); |
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_buckets = NULL; |
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} |
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} |
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uint KlassInfoTable::hash(const Klass* p) { |
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return (uint)(((uintptr_t)p - (uintptr_t)_ref) >> 2); |
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} |
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KlassInfoEntry* KlassInfoTable::lookup(Klass* k) { |
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uint idx = hash(k) % _num_buckets; |
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assert(_buckets != NULL, "Allocation failure should have been caught"); |
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KlassInfoEntry* e = _buckets[idx].lookup(k); |
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// Lookup may fail if this is a new klass for which we |
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// could not allocate space for an new entry, or if it's |
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// an archived class that we haven't loaded yet. |
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assert(e == NULL || k == e->klass(), "must be equal"); |
1 | 214 |
return e; |
215 |
} |
|
216 |
||
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// Return false if the entry could not be recorded on account |
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// of running out of space required to create a new entry. |
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219 |
bool KlassInfoTable::record_instance(const oop obj) { |
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Klass* k = obj->klass(); |
1 | 221 |
KlassInfoEntry* elt = lookup(k); |
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// elt may be NULL if it's a new klass for which we |
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// could not allocate space for a new entry in the hashtable. |
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224 |
if (elt != NULL) { |
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elt->set_count(elt->count() + 1); |
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elt->set_words(elt->words() + obj->size()); |
18025 | 227 |
_size_of_instances_in_words += obj->size(); |
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228 |
return true; |
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229 |
} else { |
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230 |
return false; |
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231 |
} |
1 | 232 |
} |
233 |
||
234 |
void KlassInfoTable::iterate(KlassInfoClosure* cic) { |
|
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assert(_buckets != NULL, "Allocation failure should have been caught"); |
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236 |
for (int index = 0; index < _num_buckets; index++) { |
1 | 237 |
_buckets[index].iterate(cic); |
238 |
} |
|
239 |
} |
|
240 |
||
18025 | 241 |
size_t KlassInfoTable::size_of_instances_in_words() const { |
242 |
return _size_of_instances_in_words; |
|
243 |
} |
|
244 |
||
1 | 245 |
int KlassInfoHisto::sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2) { |
246 |
return (*e1)->compare(*e1,*e2); |
|
247 |
} |
|
248 |
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KlassInfoHisto::KlassInfoHisto(KlassInfoTable* cit) : |
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250 |
_cit(cit) { |
18025 | 251 |
_elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<KlassInfoEntry*>(_histo_initial_size, true); |
1 | 252 |
} |
253 |
||
254 |
KlassInfoHisto::~KlassInfoHisto() { |
|
255 |
delete _elements; |
|
256 |
} |
|
257 |
||
258 |
void KlassInfoHisto::add(KlassInfoEntry* cie) { |
|
259 |
elements()->append(cie); |
|
260 |
} |
|
261 |
||
262 |
void KlassInfoHisto::sort() { |
|
263 |
elements()->sort(KlassInfoHisto::sort_helper); |
|
264 |
} |
|
265 |
||
266 |
void KlassInfoHisto::print_elements(outputStream* st) const { |
|
267 |
// simplify the formatting (ILP32 vs LP64) - store the sum in 64-bit |
|
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int64_t total = 0; |
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269 |
uint64_t totalw = 0; |
1 | 270 |
for(int i=0; i < elements()->length(); i++) { |
271 |
st->print("%4d: ", i+1); |
|
272 |
elements()->at(i)->print_on(st); |
|
273 |
total += elements()->at(i)->count(); |
|
274 |
totalw += elements()->at(i)->words(); |
|
275 |
} |
|
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276 |
st->print_cr("Total " INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13), |
1 | 277 |
total, totalw * HeapWordSize); |
278 |
} |
|
279 |
||
15437 | 280 |
#define MAKE_COL_NAME(field, name, help) #name, |
281 |
#define MAKE_COL_HELP(field, name, help) help, |
|
282 |
||
283 |
static const char *name_table[] = { |
|
284 |
HEAP_INSPECTION_COLUMNS_DO(MAKE_COL_NAME) |
|
285 |
}; |
|
286 |
||
287 |
static const char *help_table[] = { |
|
288 |
HEAP_INSPECTION_COLUMNS_DO(MAKE_COL_HELP) |
|
289 |
}; |
|
290 |
||
291 |
bool KlassInfoHisto::is_selected(const char *col_name) { |
|
292 |
if (_selected_columns == NULL) { |
|
293 |
return true; |
|
294 |
} |
|
295 |
if (strcmp(_selected_columns, col_name) == 0) { |
|
296 |
return true; |
|
297 |
} |
|
298 |
||
299 |
const char *start = strstr(_selected_columns, col_name); |
|
300 |
if (start == NULL) { |
|
301 |
return false; |
|
302 |
} |
|
303 |
||
304 |
// The following must be true, because _selected_columns != col_name |
|
305 |
if (start > _selected_columns && start[-1] != ',') { |
|
306 |
return false; |
|
307 |
} |
|
308 |
char x = start[strlen(col_name)]; |
|
309 |
if (x != ',' && x != '\0') { |
|
310 |
return false; |
|
311 |
} |
|
312 |
||
313 |
return true; |
|
314 |
} |
|
315 |
||
316 |
void KlassInfoHisto::print_title(outputStream* st, bool csv_format, |
|
317 |
bool selected[], int width_table[], |
|
318 |
const char *name_table[]) { |
|
319 |
if (csv_format) { |
|
320 |
st->print("Index,Super"); |
|
321 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
322 |
if (selected[c]) {st->print(",%s", name_table[c]);} |
|
323 |
} |
|
324 |
st->print(",ClassName"); |
|
325 |
} else { |
|
326 |
st->print("Index Super"); |
|
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|
327 |
for (int c = 0; c < KlassSizeStats::_num_columns; c++) { |
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|
328 |
if (selected[c]) { |
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|
329 |
st->print("%*s", width_table[c], name_table[c]); |
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|
330 |
} |
15437 | 331 |
} |
332 |
st->print(" ClassName"); |
|
333 |
} |
|
334 |
||
335 |
if (is_selected("ClassLoader")) { |
|
336 |
st->print(",ClassLoader"); |
|
337 |
} |
|
338 |
st->cr(); |
|
339 |
} |
|
340 |
||
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341 |
class HierarchyClosure : public KlassInfoClosure { |
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342 |
private: |
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|
343 |
GrowableArray<KlassInfoEntry*> *_elements; |
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344 |
public: |
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345 |
HierarchyClosure(GrowableArray<KlassInfoEntry*> *_elements) : _elements(_elements) {} |
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346 |
|
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|
347 |
void do_cinfo(KlassInfoEntry* cie) { |
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348 |
// ignore array classes |
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349 |
if (cie->klass()->is_instance_klass()) { |
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350 |
_elements->append(cie); |
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|
351 |
} |
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|
352 |
} |
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353 |
}; |
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|
354 |
|
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|
355 |
void KlassHierarchy::print_class_hierarchy(outputStream* st, bool print_interfaces, |
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|
356 |
bool print_subclasses, char* classname) { |
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|
357 |
ResourceMark rm; |
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|
358 |
Stack <KlassInfoEntry*, mtClass> class_stack; |
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|
359 |
GrowableArray<KlassInfoEntry*> elements; |
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|
360 |
|
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|
361 |
// Add all classes to the KlassInfoTable, which allows for quick lookup. |
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|
362 |
// A KlassInfoEntry will be created for each class. |
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|
363 |
KlassInfoTable cit(true); |
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|
364 |
if (cit.allocation_failed()) { |
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|
365 |
st->print_cr("ERROR: Ran out of C-heap; hierarchy not generated"); |
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|
366 |
return; |
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|
367 |
} |
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|
368 |
|
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|
369 |
// Add all created KlassInfoEntry instances to the elements array for easy |
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|
370 |
// iteration, and to allow each KlassInfoEntry instance to have a unique index. |
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|
371 |
HierarchyClosure hc(&elements); |
73f45d04ad7a
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|
372 |
cit.iterate(&hc); |
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|
373 |
|
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|
374 |
for(int i = 0; i < elements.length(); i++) { |
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|
375 |
KlassInfoEntry* cie = elements.at(i); |
33602 | 376 |
Klass* super = cie->klass()->super(); |
29071
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|
377 |
|
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|
378 |
// Set the index for the class. |
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|
379 |
cie->set_index(i + 1); |
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|
380 |
|
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|
381 |
// Add the class to the subclass array of its superclass. |
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|
382 |
if (super != NULL) { |
73f45d04ad7a
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|
383 |
KlassInfoEntry* super_cie = cit.lookup(super); |
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|
384 |
assert(super_cie != NULL, "could not lookup superclass"); |
73f45d04ad7a
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|
385 |
super_cie->add_subclass(cie); |
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diff
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|
386 |
} |
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diff
changeset
|
387 |
} |
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diff
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|
388 |
|
73f45d04ad7a
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diff
changeset
|
389 |
// Set the do_print flag for each class that should be printed. |
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|
390 |
for(int i = 0; i < elements.length(); i++) { |
73f45d04ad7a
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|
391 |
KlassInfoEntry* cie = elements.at(i); |
73f45d04ad7a
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|
392 |
if (classname == NULL) { |
73f45d04ad7a
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diff
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|
393 |
// We are printing all classes. |
73f45d04ad7a
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|
394 |
cie->set_do_print(true); |
73f45d04ad7a
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|
395 |
} else { |
73f45d04ad7a
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|
396 |
// We are only printing the hierarchy of a specific class. |
73f45d04ad7a
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|
397 |
if (strcmp(classname, cie->klass()->external_name()) == 0) { |
73f45d04ad7a
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|
398 |
KlassHierarchy::set_do_print_for_class_hierarchy(cie, &cit, print_subclasses); |
73f45d04ad7a
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|
399 |
} |
73f45d04ad7a
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diff
changeset
|
400 |
} |
73f45d04ad7a
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diff
changeset
|
401 |
} |
73f45d04ad7a
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diff
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|
402 |
|
73f45d04ad7a
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|
403 |
// Now we do a depth first traversal of the class hierachry. The class_stack will |
73f45d04ad7a
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diff
changeset
|
404 |
// maintain the list of classes we still need to process. Start things off |
73f45d04ad7a
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|
405 |
// by priming it with java.lang.Object. |
73f45d04ad7a
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|
406 |
KlassInfoEntry* jlo_cie = cit.lookup(SystemDictionary::Object_klass()); |
73f45d04ad7a
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|
407 |
assert(jlo_cie != NULL, "could not lookup java.lang.Object"); |
73f45d04ad7a
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|
408 |
class_stack.push(jlo_cie); |
73f45d04ad7a
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|
409 |
|
73f45d04ad7a
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diff
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|
410 |
// Repeatedly pop the top item off the stack, print its class info, |
73f45d04ad7a
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changeset
|
411 |
// and push all of its subclasses on to the stack. Do this until there |
73f45d04ad7a
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|
412 |
// are no classes left on the stack. |
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|
413 |
while (!class_stack.is_empty()) { |
73f45d04ad7a
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changeset
|
414 |
KlassInfoEntry* curr_cie = class_stack.pop(); |
73f45d04ad7a
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changeset
|
415 |
if (curr_cie->do_print()) { |
73f45d04ad7a
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|
416 |
print_class(st, curr_cie, print_interfaces); |
73f45d04ad7a
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changeset
|
417 |
if (curr_cie->subclasses() != NULL) { |
73f45d04ad7a
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changeset
|
418 |
// Current class has subclasses, so push all of them onto the stack. |
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changeset
|
419 |
for (int i = 0; i < curr_cie->subclasses()->length(); i++) { |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
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changeset
|
420 |
KlassInfoEntry* cie = curr_cie->subclasses()->at(i); |
73f45d04ad7a
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changeset
|
421 |
if (cie->do_print()) { |
73f45d04ad7a
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changeset
|
422 |
class_stack.push(cie); |
73f45d04ad7a
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changeset
|
423 |
} |
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changeset
|
424 |
} |
73f45d04ad7a
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diff
changeset
|
425 |
} |
73f45d04ad7a
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diff
changeset
|
426 |
} |
73f45d04ad7a
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diff
changeset
|
427 |
} |
73f45d04ad7a
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diff
changeset
|
428 |
|
73f45d04ad7a
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diff
changeset
|
429 |
st->flush(); |
73f45d04ad7a
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diff
changeset
|
430 |
} |
73f45d04ad7a
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diff
changeset
|
431 |
|
73f45d04ad7a
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changeset
|
432 |
// Sets the do_print flag for every superclass and subclass of the specified class. |
73f45d04ad7a
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|
433 |
void KlassHierarchy::set_do_print_for_class_hierarchy(KlassInfoEntry* cie, KlassInfoTable* cit, |
73f45d04ad7a
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|
434 |
bool print_subclasses) { |
73f45d04ad7a
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changeset
|
435 |
// Set do_print for all superclasses of this class. |
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|
436 |
Klass* super = ((InstanceKlass*)cie->klass())->java_super(); |
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changeset
|
437 |
while (super != NULL) { |
73f45d04ad7a
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changeset
|
438 |
KlassInfoEntry* super_cie = cit->lookup(super); |
73f45d04ad7a
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changeset
|
439 |
super_cie->set_do_print(true); |
73f45d04ad7a
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|
440 |
super = super->super(); |
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changeset
|
441 |
} |
73f45d04ad7a
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diff
changeset
|
442 |
|
73f45d04ad7a
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changeset
|
443 |
// Set do_print for this class and all of its subclasses. |
73f45d04ad7a
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|
444 |
Stack <KlassInfoEntry*, mtClass> class_stack; |
73f45d04ad7a
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changeset
|
445 |
class_stack.push(cie); |
73f45d04ad7a
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changeset
|
446 |
while (!class_stack.is_empty()) { |
73f45d04ad7a
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changeset
|
447 |
KlassInfoEntry* curr_cie = class_stack.pop(); |
73f45d04ad7a
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changeset
|
448 |
curr_cie->set_do_print(true); |
73f45d04ad7a
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changeset
|
449 |
if (print_subclasses && curr_cie->subclasses() != NULL) { |
73f45d04ad7a
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cjplummer
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changeset
|
450 |
// Current class has subclasses, so push all of them onto the stack. |
73f45d04ad7a
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changeset
|
451 |
for (int i = 0; i < curr_cie->subclasses()->length(); i++) { |
73f45d04ad7a
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changeset
|
452 |
KlassInfoEntry* cie = curr_cie->subclasses()->at(i); |
73f45d04ad7a
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changeset
|
453 |
class_stack.push(cie); |
73f45d04ad7a
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diff
changeset
|
454 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
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diff
changeset
|
455 |
} |
73f45d04ad7a
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diff
changeset
|
456 |
} |
73f45d04ad7a
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diff
changeset
|
457 |
} |
73f45d04ad7a
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diff
changeset
|
458 |
|
73f45d04ad7a
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changeset
|
459 |
static void print_indent(outputStream* st, int indent) { |
73f45d04ad7a
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diff
changeset
|
460 |
while (indent != 0) { |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
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diff
changeset
|
461 |
st->print("|"); |
73f45d04ad7a
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diff
changeset
|
462 |
indent--; |
73f45d04ad7a
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diff
changeset
|
463 |
if (indent != 0) { |
73f45d04ad7a
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cjplummer
parents:
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diff
changeset
|
464 |
st->print(" "); |
73f45d04ad7a
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cjplummer
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diff
changeset
|
465 |
} |
73f45d04ad7a
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diff
changeset
|
466 |
} |
73f45d04ad7a
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diff
changeset
|
467 |
} |
73f45d04ad7a
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diff
changeset
|
468 |
|
73f45d04ad7a
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changeset
|
469 |
// Print the class name and its unique ClassLoader identifer. |
73f45d04ad7a
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changeset
|
470 |
static void print_classname(outputStream* st, Klass* klass) { |
73f45d04ad7a
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|
471 |
oop loader_oop = klass->class_loader_data()->class_loader(); |
73f45d04ad7a
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|
472 |
st->print("%s/", klass->external_name()); |
73f45d04ad7a
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changeset
|
473 |
if (loader_oop == NULL) { |
73f45d04ad7a
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diff
changeset
|
474 |
st->print("null"); |
73f45d04ad7a
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diff
changeset
|
475 |
} else { |
29800
fa5f7a2bf717
8076073: shared: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
29702
diff
changeset
|
476 |
st->print(INTPTR_FORMAT, p2i(klass->class_loader_data())); |
29071
73f45d04ad7a
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changeset
|
477 |
} |
73f45d04ad7a
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diff
changeset
|
478 |
} |
73f45d04ad7a
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diff
changeset
|
479 |
|
51329
9c68699bebe5
8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents:
50572
diff
changeset
|
480 |
static void print_interface(outputStream* st, InstanceKlass* intf_klass, const char* intf_type, int indent) { |
29071
73f45d04ad7a
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changeset
|
481 |
print_indent(st, indent); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
482 |
st->print(" implements "); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
483 |
print_classname(st, intf_klass); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
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changeset
|
484 |
st->print(" (%s intf)\n", intf_type); |
73f45d04ad7a
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cjplummer
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diff
changeset
|
485 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
486 |
|
73f45d04ad7a
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cjplummer
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diff
changeset
|
487 |
void KlassHierarchy::print_class(outputStream* st, KlassInfoEntry* cie, bool print_interfaces) { |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
488 |
ResourceMark rm; |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
489 |
InstanceKlass* klass = (InstanceKlass*)cie->klass(); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
490 |
int indent = 0; |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
491 |
|
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
492 |
// Print indentation with proper indicators of superclass. |
73f45d04ad7a
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changeset
|
493 |
Klass* super = klass->super(); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
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diff
changeset
|
494 |
while (super != NULL) { |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
495 |
super = super->super(); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
496 |
indent++; |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
497 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
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27880
diff
changeset
|
498 |
print_indent(st, indent); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
499 |
if (indent != 0) st->print("--"); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
500 |
|
73f45d04ad7a
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cjplummer
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diff
changeset
|
501 |
// Print the class name, its unique ClassLoader identifer, and if it is an interface. |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
502 |
print_classname(st, klass); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
503 |
if (klass->is_interface()) { |
73f45d04ad7a
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cjplummer
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diff
changeset
|
504 |
st->print(" (intf)"); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
505 |
} |
50572
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
506 |
// Special treatment for generated core reflection accessor classes: print invocation target. |
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
507 |
if (ReflectionAccessorImplKlassHelper::is_generated_accessor(klass)) { |
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
508 |
st->print(" (invokes: "); |
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
509 |
ReflectionAccessorImplKlassHelper::print_invocation_target(st, klass); |
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
510 |
st->print(")"); |
6d4332f746ad
8203343: VM.{metaspace|classloaders|classhierarchy...} jcmd should show invocation targets for Generated{Method|Constructor}AccessorImpl classes
stuefe
parents:
49824
diff
changeset
|
511 |
} |
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
512 |
st->print("\n"); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
513 |
|
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
514 |
// Print any interfaces the class has. |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
515 |
if (print_interfaces) { |
51329
9c68699bebe5
8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents:
50572
diff
changeset
|
516 |
Array<InstanceKlass*>* local_intfs = klass->local_interfaces(); |
9c68699bebe5
8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents:
50572
diff
changeset
|
517 |
Array<InstanceKlass*>* trans_intfs = klass->transitive_interfaces(); |
29071
73f45d04ad7a
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cjplummer
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changeset
|
518 |
for (int i = 0; i < local_intfs->length(); i++) { |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
519 |
print_interface(st, local_intfs->at(i), "declared", indent); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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27880
diff
changeset
|
520 |
} |
73f45d04ad7a
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cjplummer
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diff
changeset
|
521 |
for (int i = 0; i < trans_intfs->length(); i++) { |
51329
9c68699bebe5
8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents:
50572
diff
changeset
|
522 |
InstanceKlass* trans_interface = trans_intfs->at(i); |
29071
73f45d04ad7a
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cjplummer
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diff
changeset
|
523 |
// Only print transitive interfaces if they are not also declared. |
73f45d04ad7a
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cjplummer
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diff
changeset
|
524 |
if (!local_intfs->contains(trans_interface)) { |
73f45d04ad7a
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cjplummer
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diff
changeset
|
525 |
print_interface(st, trans_interface, "inherited", indent); |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
526 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
527 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
528 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
529 |
} |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
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diff
changeset
|
530 |
|
15437 | 531 |
void KlassInfoHisto::print_class_stats(outputStream* st, |
532 |
bool csv_format, const char *columns) { |
|
533 |
ResourceMark rm; |
|
534 |
KlassSizeStats sz, sz_sum; |
|
535 |
int i; |
|
536 |
julong *col_table = (julong*)(&sz); |
|
537 |
julong *colsum_table = (julong*)(&sz_sum); |
|
538 |
int width_table[KlassSizeStats::_num_columns]; |
|
539 |
bool selected[KlassSizeStats::_num_columns]; |
|
540 |
||
541 |
_selected_columns = columns; |
|
542 |
||
543 |
memset(&sz_sum, 0, sizeof(sz_sum)); |
|
544 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
545 |
selected[c] = is_selected(name_table[c]); |
|
546 |
} |
|
547 |
||
548 |
for(i=0; i < elements()->length(); i++) { |
|
549 |
elements()->at(i)->set_index(i+1); |
|
550 |
} |
|
551 |
||
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
552 |
// First iteration is for accumulating stats totals in colsum_table[]. |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
553 |
// Second iteration is for printing stats for each class. |
15437 | 554 |
for (int pass=1; pass<=2; pass++) { |
555 |
if (pass == 2) { |
|
556 |
print_title(st, csv_format, selected, width_table, name_table); |
|
557 |
} |
|
558 |
for(i=0; i < elements()->length(); i++) { |
|
559 |
KlassInfoEntry* e = (KlassInfoEntry*)elements()->at(i); |
|
560 |
const Klass* k = e->klass(); |
|
561 |
||
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
562 |
// Get the stats for this class. |
15437 | 563 |
memset(&sz, 0, sizeof(sz)); |
564 |
sz._inst_count = e->count(); |
|
565 |
sz._inst_bytes = HeapWordSize * e->words(); |
|
566 |
k->collect_statistics(&sz); |
|
567 |
sz._total_bytes = sz._ro_bytes + sz._rw_bytes; |
|
568 |
||
569 |
if (pass == 1) { |
|
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
570 |
// Add the stats for this class to the overall totals. |
15437 | 571 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
572 |
colsum_table[c] += col_table[c]; |
|
573 |
} |
|
574 |
} else { |
|
575 |
int super_index = -1; |
|
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
576 |
// Print the stats for this class. |
33611
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33602
diff
changeset
|
577 |
if (k->is_instance_klass()) { |
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33602
diff
changeset
|
578 |
Klass* super = k->super(); |
15437 | 579 |
if (super) { |
580 |
KlassInfoEntry* super_e = _cit->lookup(super); |
|
581 |
if (super_e) { |
|
582 |
super_index = super_e->index(); |
|
583 |
} |
|
584 |
} |
|
585 |
} |
|
586 |
||
587 |
if (csv_format) { |
|
29800
fa5f7a2bf717
8076073: shared: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
29702
diff
changeset
|
588 |
st->print("%ld,%d", e->index(), super_index); |
15437 | 589 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
590 |
if (selected[c]) {st->print("," JULONG_FORMAT, col_table[c]);} |
|
591 |
} |
|
592 |
st->print(",%s",e->name()); |
|
593 |
} else { |
|
29800
fa5f7a2bf717
8076073: shared: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents:
29702
diff
changeset
|
594 |
st->print("%5ld %5d", e->index(), super_index); |
15437 | 595 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
596 |
if (selected[c]) {print_julong(st, width_table[c], col_table[c]);} |
|
597 |
} |
|
598 |
st->print(" %s", e->name()); |
|
599 |
} |
|
600 |
if (is_selected("ClassLoader")) { |
|
601 |
ClassLoaderData* loader_data = k->class_loader_data(); |
|
602 |
st->print(","); |
|
603 |
loader_data->print_value_on(st); |
|
604 |
} |
|
605 |
st->cr(); |
|
606 |
} |
|
607 |
} |
|
608 |
||
609 |
if (pass == 1) { |
|
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
610 |
// Calculate the minimum width needed for the column by accounting for the |
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
611 |
// column header width and the width of the largest value in the column. |
15437 | 612 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
613 |
width_table[c] = col_width(colsum_table[c], name_table[c]); |
|
614 |
} |
|
615 |
} |
|
616 |
} |
|
617 |
||
618 |
sz_sum._inst_size = 0; |
|
619 |
||
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
620 |
// Print the column totals. |
15437 | 621 |
if (csv_format) { |
622 |
st->print(","); |
|
623 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
624 |
if (selected[c]) {st->print("," JULONG_FORMAT, colsum_table[c]);} |
|
625 |
} |
|
626 |
} else { |
|
627 |
st->print(" "); |
|
628 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
629 |
if (selected[c]) {print_julong(st, width_table[c], colsum_table[c]);} |
|
630 |
} |
|
631 |
st->print(" Total"); |
|
632 |
if (sz_sum._total_bytes > 0) { |
|
633 |
st->cr(); |
|
634 |
st->print(" "); |
|
635 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
636 |
if (selected[c]) { |
|
637 |
switch (c) { |
|
638 |
case KlassSizeStats::_index_inst_size: |
|
639 |
case KlassSizeStats::_index_inst_count: |
|
640 |
case KlassSizeStats::_index_method_count: |
|
33604
ad1cd9269bd4
8139116: Fixes for warning "format not a string literal"
goetz
parents:
33602
diff
changeset
|
641 |
st->print("%*s", width_table[c], "-"); |
15437 | 642 |
break; |
643 |
default: |
|
644 |
{ |
|
645 |
double perc = (double)(100) * (double)(colsum_table[c]) / (double)sz_sum._total_bytes; |
|
33604
ad1cd9269bd4
8139116: Fixes for warning "format not a string literal"
goetz
parents:
33602
diff
changeset
|
646 |
st->print("%*.1f%%", width_table[c]-1, perc); |
15437 | 647 |
} |
648 |
} |
|
649 |
} |
|
650 |
} |
|
651 |
} |
|
652 |
} |
|
653 |
st->cr(); |
|
654 |
||
655 |
if (!csv_format) { |
|
656 |
print_title(st, csv_format, selected, width_table, name_table); |
|
657 |
} |
|
658 |
} |
|
659 |
||
660 |
julong KlassInfoHisto::annotations_bytes(Array<AnnotationArray*>* p) const { |
|
661 |
julong bytes = 0; |
|
662 |
if (p != NULL) { |
|
663 |
for (int i = 0; i < p->length(); i++) { |
|
664 |
bytes += count_bytes_array(p->at(i)); |
|
665 |
} |
|
666 |
bytes += count_bytes_array(p); |
|
667 |
} |
|
668 |
return bytes; |
|
669 |
} |
|
670 |
||
671 |
void KlassInfoHisto::print_histo_on(outputStream* st, bool print_stats, |
|
672 |
bool csv_format, const char *columns) { |
|
673 |
if (print_stats) { |
|
674 |
print_class_stats(st, csv_format, columns); |
|
675 |
} else { |
|
38112
7babe39983c0
8151342: Add module name/version to class histogram output
hseigel
parents:
35939
diff
changeset
|
676 |
st->print_cr(" num #instances #bytes class name (module)"); |
7babe39983c0
8151342: Add module name/version to class histogram output
hseigel
parents:
35939
diff
changeset
|
677 |
st->print_cr("-------------------------------------------------------"); |
15437 | 678 |
print_elements(st); |
679 |
} |
|
1 | 680 |
} |
681 |
||
682 |
class HistoClosure : public KlassInfoClosure { |
|
683 |
private: |
|
684 |
KlassInfoHisto* _cih; |
|
685 |
public: |
|
686 |
HistoClosure(KlassInfoHisto* cih) : _cih(cih) {} |
|
687 |
||
688 |
void do_cinfo(KlassInfoEntry* cie) { |
|
689 |
_cih->add(cie); |
|
690 |
} |
|
691 |
}; |
|
692 |
||
693 |
class RecordInstanceClosure : public ObjectClosure { |
|
694 |
private: |
|
695 |
KlassInfoTable* _cit; |
|
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
696 |
size_t _missed_count; |
18025 | 697 |
BoolObjectClosure* _filter; |
1 | 698 |
public: |
18025 | 699 |
RecordInstanceClosure(KlassInfoTable* cit, BoolObjectClosure* filter) : |
700 |
_cit(cit), _missed_count(0), _filter(filter) {} |
|
1 | 701 |
|
702 |
void do_object(oop obj) { |
|
18025 | 703 |
if (should_visit(obj)) { |
704 |
if (!_cit->record_instance(obj)) { |
|
705 |
_missed_count++; |
|
706 |
} |
|
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
707 |
} |
1 | 708 |
} |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
709 |
|
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
710 |
size_t missed_count() { return _missed_count; } |
18025 | 711 |
|
712 |
private: |
|
713 |
bool should_visit(oop obj) { |
|
714 |
return _filter == NULL || _filter->do_object_b(obj); |
|
715 |
} |
|
1 | 716 |
}; |
717 |
||
18025 | 718 |
size_t HeapInspection::populate_table(KlassInfoTable* cit, BoolObjectClosure *filter) { |
1 | 719 |
ResourceMark rm; |
18025 | 720 |
|
721 |
RecordInstanceClosure ric(cit, filter); |
|
55629
29e522153769
8224531: SEGV while collecting Klass statistics
eosterlund
parents:
55628
diff
changeset
|
722 |
Universe::heap()->safe_object_iterate(&ric); |
18025 | 723 |
return ric.missed_count(); |
724 |
} |
|
725 |
||
726 |
void HeapInspection::heap_inspection(outputStream* st) { |
|
727 |
ResourceMark rm; |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
728 |
|
15437 | 729 |
if (_print_help) { |
730 |
for (int c=0; c<KlassSizeStats::_num_columns; c++) { |
|
731 |
st->print("%s:\n\t", name_table[c]); |
|
732 |
const int max_col = 60; |
|
733 |
int col = 0; |
|
734 |
for (const char *p = help_table[c]; *p; p++,col++) { |
|
735 |
if (col >= max_col && *p == ' ') { |
|
736 |
st->print("\n\t"); |
|
737 |
col = 0; |
|
738 |
} else { |
|
739 |
st->print("%c", *p); |
|
740 |
} |
|
741 |
} |
|
742 |
st->print_cr(".\n"); |
|
743 |
} |
|
744 |
return; |
|
745 |
} |
|
746 |
||
18025 | 747 |
KlassInfoTable cit(_print_class_stats); |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
748 |
if (!cit.allocation_failed()) { |
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
749 |
// populate table with object allocation info |
18025 | 750 |
size_t missed_count = populate_table(&cit); |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
751 |
if (missed_count != 0) { |
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
752 |
st->print_cr("WARNING: Ran out of C-heap; undercounted " SIZE_FORMAT |
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
753 |
" total instances in data below", |
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
754 |
missed_count); |
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
755 |
} |
18025 | 756 |
|
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
757 |
// Sort and print klass instance info |
35939
05df7e64ecfc
8149035: Make the full_gc_dump() calls be recorded as part of the GC
brutisso
parents:
35862
diff
changeset
|
758 |
KlassInfoHisto histo(&cit); |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
759 |
HistoClosure hc(&histo); |
18025 | 760 |
|
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
761 |
cit.iterate(&hc); |
18025 | 762 |
|
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
763 |
histo.sort(); |
15437 | 764 |
histo.print_histo_on(st, _print_class_stats, _csv_format, _columns); |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
765 |
} else { |
29071
73f45d04ad7a
8054888: Runtime: Add Diagnostic Command that prints the class hierarchy
cjplummer
parents:
27880
diff
changeset
|
766 |
st->print_cr("ERROR: Ran out of C-heap; histogram not generated"); |
184
a2da5efb871c
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
1
diff
changeset
|
767 |
} |
1 | 768 |
st->flush(); |
769 |
} |
|
770 |
||
771 |
class FindInstanceClosure : public ObjectClosure { |
|
772 |
private: |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
773 |
Klass* _klass; |
1 | 774 |
GrowableArray<oop>* _result; |
775 |
||
776 |
public: |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
777 |
FindInstanceClosure(Klass* k, GrowableArray<oop>* result) : _klass(k), _result(result) {}; |
1 | 778 |
|
779 |
void do_object(oop obj) { |
|
780 |
if (obj->is_a(_klass)) { |
|
781 |
_result->append(obj); |
|
782 |
} |
|
783 |
} |
|
784 |
}; |
|
785 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13195
diff
changeset
|
786 |
void HeapInspection::find_instances_at_safepoint(Klass* k, GrowableArray<oop>* result) { |
1 | 787 |
assert(SafepointSynchronize::is_at_safepoint(), "all threads are stopped"); |
5402
c51fd0c1d005
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
2154
diff
changeset
|
788 |
assert(Heap_lock->is_locked(), "should have the Heap_lock"); |
1 | 789 |
|
790 |
// Ensure that the heap is parsable |
|
791 |
Universe::heap()->ensure_parsability(false); // no need to retire TALBs |
|
792 |
||
793 |
// Iterate over objects in the heap |
|
794 |
FindInstanceClosure fic(k, result); |
|
55628
7a0d1616851e
8227277: HeapInspection::find_instances_at_safepoint walks dead objects
eosterlund
parents:
54786
diff
changeset
|
795 |
Universe::heap()->safe_object_iterate(&fic); |
1 | 796 |
} |