author | ccheung |
Thu, 12 Sep 2019 09:59:19 -0700 | |
changeset 58110 | 85e1de070bef |
parent 54820 | fcf83b204c27 |
child 58063 | bdf136b8ae0e |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2018, 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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#include "precompiled.hpp" |
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#include "classfile/classLoaderData.inline.hpp" |
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#include "classfile/javaClasses.hpp" |
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#include "memory/metaspace/printCLDMetaspaceInfoClosure.hpp" |
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#include "memory/metaspace/printMetaspaceInfoKlassClosure.hpp" |
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#include "memory/metaspaceShared.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "runtime/safepoint.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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#include "utilities/ostream.hpp" |
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namespace metaspace { |
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PrintCLDMetaspaceInfoClosure::PrintCLDMetaspaceInfoClosure(outputStream* out, size_t scale, bool do_print, |
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bool do_print_classes, bool break_down_by_chunktype) |
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: _out(out), _scale(scale), _do_print(do_print), _do_print_classes(do_print_classes) |
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, _break_down_by_chunktype(break_down_by_chunktype) |
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, _num_loaders(0), _num_loaders_without_metaspace(0), _num_loaders_unloading(0) |
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, _num_classes(0), _num_classes_shared(0) |
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{ |
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memset(_num_loaders_by_spacetype, 0, sizeof(_num_loaders_by_spacetype)); |
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memset(_num_classes_by_spacetype, 0, sizeof(_num_classes_by_spacetype)); |
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memset(_num_classes_shared_by_spacetype, 0, sizeof(_num_classes_shared_by_spacetype)); |
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} |
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// A closure just to count classes |
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class CountKlassClosure : public KlassClosure { |
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public: |
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uintx _num_classes; |
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uintx _num_classes_shared; |
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CountKlassClosure() : _num_classes(0), _num_classes_shared(0) {} |
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void do_klass(Klass* k) { |
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_num_classes ++; |
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if (k->is_shared()) { |
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_num_classes_shared ++; |
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} |
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} |
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}; // end: PrintKlassInfoClosure |
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void PrintCLDMetaspaceInfoClosure::do_cld(ClassLoaderData* cld) { |
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assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint"); |
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if (cld->is_unloading()) { |
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_num_loaders_unloading ++; |
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return; |
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} |
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ClassLoaderMetaspace* msp = cld->metaspace_or_null(); |
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if (msp == NULL) { |
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_num_loaders_without_metaspace ++; |
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return; |
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} |
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// Collect statistics for this class loader metaspace |
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ClassLoaderMetaspaceStatistics this_cld_stat; |
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msp->add_to_statistics(&this_cld_stat); |
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// And add it to the running totals |
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_stats_total.add(this_cld_stat); |
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_num_loaders ++; |
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_stats_by_spacetype[msp->space_type()].add(this_cld_stat); |
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_num_loaders_by_spacetype[msp->space_type()] ++; |
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// Count classes loaded by this CLD. |
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CountKlassClosure ckc; |
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cld->classes_do(&ckc); |
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// accumulate. |
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_num_classes += ckc._num_classes; |
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_num_classes_by_spacetype[msp->space_type()] += ckc._num_classes; |
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_num_classes_shared += ckc._num_classes_shared; |
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_num_classes_shared_by_spacetype[msp->space_type()] += ckc._num_classes_shared; |
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// Optionally, print |
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if (_do_print) { |
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_out->print(UINTX_FORMAT_W(4) ": ", _num_loaders); |
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// Print "CLD for [<loader name>,] instance of <loader class name>" |
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// or "CLD for <anonymous class>, loaded by [<loader name>,] instance of <loader class name>" |
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ResourceMark rm; |
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const char* name = NULL; |
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const char* class_name = NULL; |
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// Note: this should also work if unloading: |
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Klass* k = cld->class_loader_klass(); |
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if (k != NULL) { |
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class_name = k->external_name(); |
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Symbol* s = cld->name(); |
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if (s != NULL) { |
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name = s->as_C_string(); |
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} |
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} else { |
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name = "<bootstrap>"; |
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} |
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_out->print("CLD " PTR_FORMAT, p2i(cld)); |
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if (cld->is_unloading()) { |
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_out->print(" (unloading)"); |
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} |
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_out->print(":"); |
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if (cld->is_unsafe_anonymous()) { |
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_out->print(" <anonymous class>, loaded by"); |
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} |
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if (name != NULL) { |
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_out->print(" \"%s\"", name); |
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} |
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if (class_name != NULL) { |
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_out->print(" instance of %s", class_name); |
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} |
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if (_do_print_classes) { |
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// Print a detailed description of all loaded classes. |
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streamIndentor sti(_out, 6); |
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_out->cr_indent(); |
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_out->print("Loaded classes"); |
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if (ckc._num_classes_shared > 0) { |
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_out->print("('s' = shared)"); |
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} |
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_out->print(":"); |
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PrintMetaspaceInfoKlassClosure pkic(_out, true); |
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cld->classes_do(&pkic); |
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_out->cr_indent(); |
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_out->print("-total-: "); |
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print_number_of_classes(_out, ckc._num_classes, ckc._num_classes_shared); |
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} else { |
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// Just print a summary about how many classes have been loaded. |
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_out->print(", "); |
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print_number_of_classes(_out, ckc._num_classes, ckc._num_classes_shared); |
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} |
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// Print statistics |
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this_cld_stat.print_on(_out, _scale, _break_down_by_chunktype); |
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_out->cr(); |
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} |
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} |
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} // namespace metaspace |
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