jdk8-mips64-public/hotspot: src/share/vm/classfile/resolutionErrors.cpp@95c00927be11 (annotated)

src/share/vm/classfile/resolutionErrors.cpp@95c00927be11 (annotated)

src/share/vm/classfile/resolutionErrors.cpp

Mon, 27 May 2013 12:56:34 +0200

author: stefank
date: Mon, 27 May 2013 12:56:34 +0200
changeset 5195: 95c00927be11
parent 4037: da91efe96a93
child 6876: 710a3c8b516e
child 9966: baf9f57c9b46
permissions: -rw-r--r--

8015428: Remove unused CDS support from StringTable
Summary: The string in StringTable is not used by CDS anymore. Remove the unnecessary code in preparation for 8015422: Large performance hit when the StringTable is walked twice in Parallel Scavenge
Reviewed-by: pliden, tschatzl, coleenp

 /*
  * Copyright (c) 2005, 2012, 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/resolutionErrors.hpp"
 #include "memory/resourceArea.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/handles.inline.hpp"
 #include "runtime/safepoint.hpp"
 #include "utilities/hashtable.inline.hpp"
 // add new entry to the table
 void ResolutionErrorTable::add_entry(int index, unsigned int hash,
                                      constantPoolHandle pool, int cp_index, Symbol* error)
 {
   assert_locked_or_safepoint(SystemDictionary_lock);
   assert(!pool.is_null() && error != NULL, "adding NULL obj");
   ResolutionErrorEntry* entry = new_entry(hash, pool(), cp_index, error);
   add_entry(index, entry);
 }
 // find entry in the table
 ResolutionErrorEntry* ResolutionErrorTable::find_entry(int index, unsigned int hash,
                                                        constantPoolHandle pool, int cp_index)
 {
   assert_locked_or_safepoint(SystemDictionary_lock);
   for (ResolutionErrorEntry *error_probe = bucket(index);
                          error_probe != NULL;
                          error_probe = error_probe->next()) {
   if (error_probe->hash() == hash && error_probe->pool() == pool()) {
       return error_probe;;
     }
   }
   return NULL;
 }
 void ResolutionErrorEntry::set_error(Symbol* e) {
   assert(e == NULL || _error == NULL, "cannot reset error");
   _error = e;
   if (_error != NULL) _error->increment_refcount();
 }
 // create new error entry
 ResolutionErrorEntry* ResolutionErrorTable::new_entry(int hash, ConstantPool* pool,
                                                       int cp_index, Symbol* error)
 {
   ResolutionErrorEntry* entry = (ResolutionErrorEntry*)Hashtable<ConstantPool*, mtClass>::new_entry(hash, pool);
   entry->set_cp_index(cp_index);
   NOT_PRODUCT(entry->set_error(NULL);)
   entry->set_error(error);
   return entry;
 }
 void ResolutionErrorTable::free_entry(ResolutionErrorEntry *entry) {
   // decrement error refcount
   assert(entry->error() != NULL, "error should be set");
   entry->error()->decrement_refcount();
   Hashtable<ConstantPool*, mtClass>::free_entry(entry);
 }
 // create resolution error table
 ResolutionErrorTable::ResolutionErrorTable(int table_size)
     : Hashtable<ConstantPool*, mtClass>(table_size, sizeof(ResolutionErrorEntry)) {
 }
 // RedefineClasses support - remove matching entry of a
 // constant pool that is going away
 void ResolutionErrorTable::delete_entry(ConstantPool* c) {
   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
   for (int i = 0; i < table_size(); i++) {
     for (ResolutionErrorEntry** p = bucket_addr(i); *p != NULL; ) {
       ResolutionErrorEntry* entry = *p;
       assert(entry->pool() != NULL, "resolution error table is corrupt");
       if (entry->pool() == c) {
         *p = entry->next();
         free_entry(entry);
       } else {
         p = entry->next_addr();
       }
     }
   }
 }
 // Remove unloaded entries from the table
 void ResolutionErrorTable::purge_resolution_errors() {
   assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
   for (int i = 0; i < table_size(); i++) {
     for (ResolutionErrorEntry** p = bucket_addr(i); *p != NULL; ) {
       ResolutionErrorEntry* entry = *p;
       assert(entry->pool() != (ConstantPool*)NULL, "resolution error table is corrupt");
       ConstantPool* pool = entry->pool();
       assert(pool->pool_holder() != NULL, "Constant pool without a class?");
       ClassLoaderData* loader_data =
               pool->pool_holder()->class_loader_data();
       if (!loader_data->is_unloading()) {
         p = entry->next_addr();
       } else {
         *p = entry->next();
         free_entry(entry);
       }
     }
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/classfile/resolutionErrors.cpp@95c00927be11 (annotated)

src/share/vm/classfile/resolutionErrors.cpp