| /* |
| * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| #include "precompiled.hpp" |
| #include "classfile/classLoaderData.inline.hpp" |
| #include "classfile/javaClasses.hpp" |
| #include "memory/metaspace/printCLDMetaspaceInfoClosure.hpp" |
| #include "memory/metaspace/printMetaspaceInfoKlassClosure.hpp" |
| #include "memory/metaspaceShared.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "runtime/safepoint.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| #include "utilities/ostream.hpp" |
| |
| |
| namespace metaspace { |
| |
| PrintCLDMetaspaceInfoClosure::PrintCLDMetaspaceInfoClosure(outputStream* out, size_t scale, bool do_print, |
| bool do_print_classes, bool break_down_by_chunktype) |
| : _out(out), _scale(scale), _do_print(do_print), _do_print_classes(do_print_classes) |
| , _break_down_by_chunktype(break_down_by_chunktype) |
| , _num_loaders(0), _num_loaders_unloading(0), _num_loaders_without_metaspace(0) |
| , _num_classes(0), _num_classes_shared(0) |
| { |
| memset(_num_loaders_by_spacetype, 0, sizeof(_num_loaders_by_spacetype)); |
| memset(_num_classes_by_spacetype, 0, sizeof(_num_classes_by_spacetype)); |
| memset(_num_classes_shared_by_spacetype, 0, sizeof(_num_classes_shared_by_spacetype)); |
| } |
| |
| // A closure just to count classes |
| class CountKlassClosure : public KlassClosure { |
| public: |
| |
| uintx _num_classes; |
| uintx _num_classes_shared; |
| |
| CountKlassClosure() : _num_classes(0), _num_classes_shared(0) {} |
| void do_klass(Klass* k) { |
| _num_classes ++; |
| if (k->is_shared()) { |
| _num_classes_shared ++; |
| } |
| } |
| |
| }; // end: PrintKlassInfoClosure |
| |
| void PrintCLDMetaspaceInfoClosure::do_cld(ClassLoaderData* cld) { |
| |
| assert(SafepointSynchronize::is_at_safepoint(), "Must be at a safepoint"); |
| |
| if (cld->is_unloading()) { |
| _num_loaders_unloading ++; |
| return; |
| } |
| |
| ClassLoaderMetaspace* msp = cld->metaspace_or_null(); |
| if (msp == NULL) { |
| _num_loaders_without_metaspace ++; |
| return; |
| } |
| |
| // Collect statistics for this class loader metaspace |
| ClassLoaderMetaspaceStatistics this_cld_stat; |
| msp->add_to_statistics(&this_cld_stat); |
| |
| // And add it to the running totals |
| _stats_total.add(this_cld_stat); |
| _num_loaders ++; |
| _stats_by_spacetype[msp->space_type()].add(this_cld_stat); |
| _num_loaders_by_spacetype[msp->space_type()] ++; |
| |
| // Count classes loaded by this CLD. |
| CountKlassClosure ckc; |
| cld->classes_do(&ckc); |
| // accumulate. |
| _num_classes += ckc._num_classes; |
| _num_classes_by_spacetype[msp->space_type()] += ckc._num_classes; |
| _num_classes_shared += ckc._num_classes_shared; |
| _num_classes_shared_by_spacetype[msp->space_type()] += ckc._num_classes_shared; |
| |
| // Optionally, print |
| if (_do_print) { |
| |
| _out->print(UINTX_FORMAT_W(4) ": ", _num_loaders); |
| |
| // Print "CLD for [<loader name>,] instance of <loader class name>" |
| // or "CLD for <anonymous class>, loaded by [<loader name>,] instance of <loader class name>" |
| |
| ResourceMark rm; |
| const char* name = NULL; |
| const char* class_name = NULL; |
| |
| // Note: this should also work if unloading: |
| Klass* k = cld->class_loader_klass(); |
| if (k != NULL) { |
| class_name = k->external_name(); |
| Symbol* s = cld->name(); |
| if (s != NULL) { |
| name = s->as_C_string(); |
| } |
| } else { |
| name = "<bootstrap>"; |
| } |
| |
| // Print |
| _out->print("CLD " PTR_FORMAT, p2i(cld)); |
| if (cld->is_unloading()) { |
| _out->print(" (unloading)"); |
| } |
| _out->print(":"); |
| if (cld->is_anonymous()) { |
| _out->print(" <anonymous class>, loaded by"); |
| } |
| if (name != NULL) { |
| _out->print(" \"%s\"", name); |
| } |
| if (class_name != NULL) { |
| _out->print(" instance of %s", class_name); |
| } |
| |
| if (_do_print_classes) { |
| // Print a detailed description of all loaded classes. |
| streamIndentor sti(_out, 6); |
| _out->cr_indent(); |
| _out->print("Loaded classes"); |
| if (ckc._num_classes_shared > 0) { |
| _out->print("('s' = shared)"); |
| } |
| _out->print(":"); |
| PrintMetaspaceInfoKlassClosure pkic(_out, true); |
| cld->classes_do(&pkic); |
| _out->cr_indent(); |
| _out->print("-total-: "); |
| print_number_of_classes(_out, ckc._num_classes, ckc._num_classes_shared); |
| } else { |
| // Just print a summary about how many classes have been loaded. |
| _out->print(", "); |
| print_number_of_classes(_out, ckc._num_classes, ckc._num_classes_shared); |
| } |
| |
| // Print statistics |
| this_cld_stat.print_on(_out, _scale, _break_down_by_chunktype); |
| _out->cr(); |
| |
| } |
| |
| } |
| |
| } // namespace metaspace |
| |