jdk8-mips64-public/hotspot: src/share/vm/classfile/classLoaderStats.cpp@8adf45218add (annotated)

src/share/vm/classfile/classLoaderStats.cpp@8adf45218add (annotated)

src/share/vm/classfile/classLoaderStats.cpp

Wed, 23 Sep 2020 16:26:20 +0300

author: vkempik
date: Wed, 23 Sep 2020 16:26:20 +0300
changeset 10009: 8adf45218add
parent 9063: 777ace6655eb
permissions: -rw-r--r--

8244955: Additional Fix for JDK-8240124
Reviewed-by: mbalao, andrew

 /*
  * Copyright (c) 2014, 2017, 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 "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);
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/classfile/classLoaderStats.cpp@8adf45218add (annotated)

src/share/vm/classfile/classLoaderStats.cpp