| /* |
| * Copyright (c) 2014, 2015, 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/classLoaderStats.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| |
| class ClassStatsClosure : public KlassClosure { |
| public: |
| int _num_classes; |
| |
| ClassStatsClosure() : |
| _num_classes(0) { |
| } |
| |
| virtual void do_klass(Klass* k) { |
| _num_classes++; |
| } |
| }; |
| |
| |
| void ClassLoaderStatsClosure::do_cld(ClassLoaderData* cld) { |
| oop cl = cld->class_loader(); |
| ClassLoaderStats* cls; |
| |
| // The hashtable key is the ClassLoader oop since we want to account |
| // for "real" classes and anonymous classes together |
| ClassLoaderStats** cls_ptr = _stats->get(cl); |
| if (cls_ptr == NULL) { |
| cls = new ClassLoaderStats(); |
| _stats->put(cl, cls); |
| _total_loaders++; |
| } else { |
| cls = *cls_ptr; |
| } |
| |
| if (!cld->is_anonymous()) { |
| cls->_cld = cld; |
| } |
| |
| cls->_class_loader = cl; |
| if (cl != NULL) { |
| cls->_parent = java_lang_ClassLoader::parent(cl); |
| addEmptyParents(cls->_parent); |
| } |
| |
| ClassStatsClosure csc; |
| cld->classes_do(&csc); |
| if(cld->is_anonymous()) { |
| cls->_anon_classes_count += csc._num_classes; |
| } else { |
| cls->_classes_count = csc._num_classes; |
| } |
| _total_classes += csc._num_classes; |
| |
| Metaspace* ms = cld->metaspace_or_null(); |
| if (ms != NULL) { |
| if(cld->is_anonymous()) { |
| cls->_anon_chunk_sz += ms->allocated_chunks_bytes(); |
| cls->_anon_block_sz += ms->allocated_blocks_bytes(); |
| } else { |
| cls->_chunk_sz = ms->allocated_chunks_bytes(); |
| cls->_block_sz = ms->allocated_blocks_bytes(); |
| } |
| _total_chunk_sz += ms->allocated_chunks_bytes(); |
| _total_block_sz += ms->allocated_blocks_bytes(); |
| } |
| } |
| |
| |
| // Handles the difference in pointer width on 32 and 64 bit platforms |
| #ifdef _LP64 |
| #define SPACE "%8s" |
| #else |
| #define SPACE "%s" |
| #endif |
| |
| |
| bool ClassLoaderStatsClosure::do_entry(oop const& key, ClassLoaderStats* const& cls) { |
| Klass* class_loader_klass = (cls->_class_loader == NULL ? NULL : cls->_class_loader->klass()); |
| Klass* parent_klass = (cls->_parent == NULL ? NULL : cls->_parent->klass()); |
| |
| _out->print(INTPTR_FORMAT " " INTPTR_FORMAT " " INTPTR_FORMAT " " UINTX_FORMAT_W(6) " " SIZE_FORMAT_W(8) " " SIZE_FORMAT_W(8) " ", |
| p2i(class_loader_klass), p2i(parent_klass), p2i(cls->_cld), |
| cls->_classes_count, |
| cls->_chunk_sz, cls->_block_sz); |
| if (class_loader_klass != NULL) { |
| _out->print("%s", class_loader_klass->external_name()); |
| } else { |
| _out->print("<boot class loader>"); |
| } |
| _out->cr(); |
| if (cls->_anon_classes_count > 0) { |
| _out->print_cr(SPACE SPACE SPACE " " UINTX_FORMAT_W(6) " " SIZE_FORMAT_W(8) " " SIZE_FORMAT_W(8) " + unsafe anonymous classes", |
| "", "", "", |
| cls->_anon_classes_count, |
| cls->_anon_chunk_sz, cls->_anon_block_sz); |
| } |
| return true; |
| } |
| |
| |
| void ClassLoaderStatsClosure::print() { |
| _out->print_cr("ClassLoader" SPACE " Parent" SPACE " CLD*" SPACE " Classes ChunkSz BlockSz Type", "", "", ""); |
| _stats->iterate(this); |
| _out->print("Total = " UINTX_FORMAT_W(-6), _total_loaders); |
| _out->print(SPACE SPACE SPACE " ", "", "", ""); |
| _out->print_cr(UINTX_FORMAT_W(6) " " SIZE_FORMAT_W(8) " " SIZE_FORMAT_W(8) " ", |
| _total_classes, |
| _total_chunk_sz, |
| _total_block_sz); |
| _out->print_cr("ChunkSz: Total size of all allocated metaspace chunks"); |
| _out->print_cr("BlockSz: Total size of all allocated metaspace blocks (each chunk has several blocks)"); |
| } |
| |
| |
| void ClassLoaderStatsClosure::addEmptyParents(oop cl) { |
| while (cl != NULL && java_lang_ClassLoader::loader_data(cl) == NULL) { |
| // This classloader has not loaded any classes |
| ClassLoaderStats** cls_ptr = _stats->get(cl); |
| if (cls_ptr == NULL) { |
| // It does not exist in our table - add it |
| ClassLoaderStats* cls = new ClassLoaderStats(); |
| cls->_class_loader = cl; |
| cls->_parent = java_lang_ClassLoader::parent(cl); |
| _stats->put(cl, cls); |
| _total_loaders++; |
| } |
| |
| cl = java_lang_ClassLoader::parent(cl); |
| } |
| } |
| |
| |
| void ClassLoaderStatsVMOperation::doit() { |
| ClassLoaderStatsClosure clsc (_out); |
| ClassLoaderDataGraph::cld_do(&clsc); |
| clsc.print(); |
| } |
| |
| |
| void ClassLoaderStatsDCmd::execute(DCmdSource source, TRAPS) { |
| ClassLoaderStatsVMOperation op(output()); |
| VMThread::execute(&op); |
| } |