dbuck@9063: /*
dbuck@9063:  * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
dbuck@9063:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
dbuck@9063:  *
dbuck@9063:  * This code is free software; you can redistribute it and/or modify it
dbuck@9063:  * under the terms of the GNU General Public License version 2 only, as
dbuck@9063:  * published by the Free Software Foundation.
dbuck@9063:  *
dbuck@9063:  * This code is distributed in the hope that it will be useful, but WITHOUT
dbuck@9063:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
dbuck@9063:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dbuck@9063:  * version 2 for more details (a copy is included in the LICENSE file that
dbuck@9063:  * accompanied this code).
dbuck@9063:  *
dbuck@9063:  * You should have received a copy of the GNU General Public License version
dbuck@9063:  * 2 along with this work; if not, write to the Free Software Foundation,
dbuck@9063:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
dbuck@9063:  *
dbuck@9063:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
dbuck@9063:  * or visit www.oracle.com if you need additional information or have any
dbuck@9063:  * questions.
dbuck@9063:  *
dbuck@9063:  */
dbuck@9063: 
dbuck@9063: #include "precompiled.hpp"
dbuck@9063: #include "classfile/classLoaderStats.hpp"
dbuck@9063: #include "utilities/globalDefinitions.hpp"
dbuck@9063: 
dbuck@9063: 
dbuck@9063: class ClassStatsClosure : public KlassClosure {
dbuck@9063: public:
dbuck@9063:   int _num_classes;
dbuck@9063: 
dbuck@9063:   ClassStatsClosure() :
dbuck@9063:     _num_classes(0) {
dbuck@9063:   }
dbuck@9063: 
dbuck@9063:   virtual void do_klass(Klass* k) {
dbuck@9063:     _num_classes++;
dbuck@9063:   }
dbuck@9063: };
dbuck@9063: 
dbuck@9063: 
dbuck@9063: void ClassLoaderStatsClosure::do_cld(ClassLoaderData* cld) {
dbuck@9063:   oop cl = cld->class_loader();
dbuck@9063:   ClassLoaderStats* cls;
dbuck@9063: 
dbuck@9063:   // The hashtable key is the ClassLoader oop since we want to account
dbuck@9063:   // for "real" classes and anonymous classes together
dbuck@9063:   ClassLoaderStats** cls_ptr = _stats->get(cl);
dbuck@9063:   if (cls_ptr == NULL) {
dbuck@9063:     cls = new ClassLoaderStats();
dbuck@9063:     _stats->put(cl, cls);
dbuck@9063:     _total_loaders++;
dbuck@9063:   } else {
dbuck@9063:     cls = *cls_ptr;
dbuck@9063:   }
dbuck@9063: 
dbuck@9063:   if (!cld->is_anonymous()) {
dbuck@9063:     cls->_cld = cld;
dbuck@9063:   }
dbuck@9063: 
dbuck@9063:   cls->_class_loader = cl;
dbuck@9063:   if (cl != NULL) {
dbuck@9063:     cls->_parent = java_lang_ClassLoader::parent(cl);
dbuck@9063:     addEmptyParents(cls->_parent);
dbuck@9063:   }
dbuck@9063: 
dbuck@9063:   ClassStatsClosure csc;
dbuck@9063:   cld->classes_do(&csc);
dbuck@9063:   if(cld->is_anonymous()) {
dbuck@9063:     cls->_anon_classes_count += csc._num_classes;
dbuck@9063:   } else {
dbuck@9063:     cls->_classes_count = csc._num_classes;
dbuck@9063:   }
dbuck@9063:   _total_classes += csc._num_classes;
dbuck@9063: 
dbuck@9063:   Metaspace* ms = cld->metaspace_or_null();
dbuck@9063:   if (ms != NULL) {
dbuck@9063:     if(cld->is_anonymous()) {
dbuck@9063:       cls->_anon_chunk_sz += ms->allocated_chunks_bytes();
dbuck@9063:       cls->_anon_block_sz += ms->allocated_blocks_bytes();
dbuck@9063:     } else {
dbuck@9063:       cls->_chunk_sz = ms->allocated_chunks_bytes();
dbuck@9063:       cls->_block_sz = ms->allocated_blocks_bytes();
dbuck@9063:     }
dbuck@9063:     _total_chunk_sz += ms->allocated_chunks_bytes();
dbuck@9063:     _total_block_sz += ms->allocated_blocks_bytes();
dbuck@9063:   }
dbuck@9063: }
dbuck@9063: 
dbuck@9063: 
dbuck@9063: // Handles the difference in pointer width on 32 and 64 bit platforms
dbuck@9063: #ifdef _LP64
dbuck@9063:   #define SPACE "%8s"
dbuck@9063: #else
dbuck@9063:   #define SPACE "%s"
dbuck@9063: #endif
dbuck@9063: 
dbuck@9063: 
dbuck@9063: bool ClassLoaderStatsClosure::do_entry(oop const& key, ClassLoaderStats* const& cls) {
dbuck@9063:   Klass* class_loader_klass = (cls->_class_loader == NULL ? NULL : cls->_class_loader->klass());
dbuck@9063:   Klass* parent_klass = (cls->_parent == NULL ? NULL : cls->_parent->klass());
dbuck@9063: 
dbuck@9063:   _out->print(INTPTR_FORMAT "  " INTPTR_FORMAT "  " INTPTR_FORMAT "  " UINTX_FORMAT_W(6) "  " SIZE_FORMAT_W(8) "  " SIZE_FORMAT_W(8) "  ",
dbuck@9063:       p2i(class_loader_klass), p2i(parent_klass), p2i(cls->_cld),
dbuck@9063:       cls->_classes_count,
dbuck@9063:       cls->_chunk_sz, cls->_block_sz);
dbuck@9063:   if (class_loader_klass != NULL) {
dbuck@9063:     _out->print("%s", class_loader_klass->external_name());
dbuck@9063:   } else {
dbuck@9063:     _out->print("<boot class loader>");
dbuck@9063:   }
dbuck@9063:   _out->cr();
dbuck@9063:   if (cls->_anon_classes_count > 0) {
dbuck@9063:     _out->print_cr(SPACE SPACE SPACE "                                    " UINTX_FORMAT_W(6) "  " SIZE_FORMAT_W(8) "  " SIZE_FORMAT_W(8) "   + unsafe anonymous classes",
dbuck@9063:         "", "", "",
dbuck@9063:         cls->_anon_classes_count,
dbuck@9063:         cls->_anon_chunk_sz, cls->_anon_block_sz);
dbuck@9063:   }
dbuck@9063:   return true;
dbuck@9063: }
dbuck@9063: 
dbuck@9063: 
dbuck@9063: void ClassLoaderStatsClosure::print() {
dbuck@9063:   _out->print_cr("ClassLoader" SPACE " Parent" SPACE "      CLD*" SPACE "       Classes   ChunkSz   BlockSz  Type", "", "", "");
dbuck@9063:   _stats->iterate(this);
dbuck@9063:   _out->print("Total = " UINTX_FORMAT_W(-6), _total_loaders);
dbuck@9063:   _out->print(SPACE SPACE SPACE "                      ", "", "", "");
dbuck@9063:   _out->print_cr(UINTX_FORMAT_W(6) "  " SIZE_FORMAT_W(8) "  " SIZE_FORMAT_W(8) "  ",
dbuck@9063:       _total_classes,
dbuck@9063:       _total_chunk_sz,
dbuck@9063:       _total_block_sz);
dbuck@9063:   _out->print_cr("ChunkSz: Total size of all allocated metaspace chunks");
dbuck@9063:   _out->print_cr("BlockSz: Total size of all allocated metaspace blocks (each chunk has several blocks)");
dbuck@9063: }
dbuck@9063: 
dbuck@9063: 
dbuck@9063: void ClassLoaderStatsClosure::addEmptyParents(oop cl) {
dbuck@9063:   while (cl != NULL && java_lang_ClassLoader::loader_data(cl) == NULL) {
dbuck@9063:     // This classloader has not loaded any classes
dbuck@9063:     ClassLoaderStats** cls_ptr = _stats->get(cl);
dbuck@9063:     if (cls_ptr == NULL) {
dbuck@9063:       // It does not exist in our table - add it
dbuck@9063:       ClassLoaderStats* cls = new ClassLoaderStats();
dbuck@9063:       cls->_class_loader = cl;
dbuck@9063:       cls->_parent = java_lang_ClassLoader::parent(cl);
dbuck@9063:       _stats->put(cl, cls);
dbuck@9063:       _total_loaders++;
dbuck@9063:     }
dbuck@9063: 
dbuck@9063:     cl = java_lang_ClassLoader::parent(cl);
dbuck@9063:   }
dbuck@9063: }
dbuck@9063: 
dbuck@9063: 
dbuck@9063: void ClassLoaderStatsVMOperation::doit() {
dbuck@9063:   ClassLoaderStatsClosure clsc (_out);
dbuck@9063:   ClassLoaderDataGraph::cld_do(&clsc);
dbuck@9063:   clsc.print();
dbuck@9063: }
dbuck@9063: 
dbuck@9063: 
dbuck@9063: void ClassLoaderStatsDCmd::execute(DCmdSource source, TRAPS) {
dbuck@9063:   ClassLoaderStatsVMOperation op(output());
dbuck@9063:   VMThread::execute(&op);
dbuck@9063: }