jdk8-mips64-public/hotspot: src/share/vm/oops/annotations.cpp@da91efe96a93 (annotated)

src/share/vm/oops/annotations.cpp@da91efe96a93 (annotated)

src/share/vm/oops/annotations.cpp

Sat, 01 Sep 2012 13:25:18 -0400

author: coleenp
date: Sat, 01 Sep 2012 13:25:18 -0400
changeset 4037: da91efe96a93
child 4393: 35431a769282
permissions: -rw-r--r--

6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

 /*
  * Copyright (c) 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/classLoaderData.hpp"
 #include "memory/metadataFactory.hpp"
 #include "memory/oopFactory.hpp"
 #include "oops/annotations.hpp"
 #include "oops/instanceKlass.hpp"
 #include "utilities/ostream.hpp"
 // Allocate annotations in metadata area
 Annotations* Annotations::allocate(ClassLoaderData* loader_data, TRAPS) {
   return new (loader_data, size(), true, THREAD) Annotations();
 }
 Annotations* Annotations::allocate(ClassLoaderData* loader_data,
                                    Array<AnnotationArray*>* fa,
                                    Array<AnnotationArray*>* ma,
                                    Array<AnnotationArray*>* mpa,
                                    Array<AnnotationArray*>* mda, TRAPS) {
   return new (loader_data, size(), true, THREAD) Annotations(fa, ma, mpa, mda);
 }
 // helper
 static void free_contents(ClassLoaderData* loader_data, Array<AnnotationArray*>* p) {
   if (p != NULL) {
     for (int i = 0; i < p->length(); i++) {
       MetadataFactory::free_array<u1>(loader_data, p->at(i));
     }
     MetadataFactory::free_array<AnnotationArray*>(loader_data, p);
   }
 }
 void Annotations::deallocate_contents(ClassLoaderData* loader_data) {
   if (class_annotations() != NULL) {
     MetadataFactory::free_array<u1>(loader_data, class_annotations());
   }
   free_contents(loader_data, fields_annotations());
   free_contents(loader_data, methods_annotations());
   free_contents(loader_data, methods_parameter_annotations());
   free_contents(loader_data, methods_default_annotations());
 }
 // Set the annotation at 'idnum' to 'anno'.
 // We don't want to create or extend the array if 'anno' is NULL, since that is the
 // default value.  However, if the array exists and is long enough, we must set NULL values.
 void Annotations::set_methods_annotations_of(instanceKlassHandle ik,
                                              int idnum, AnnotationArray* anno,
                                              Array<AnnotationArray*>** md_p,
                                              TRAPS) {
   Array<AnnotationArray*>* md = *md_p;
   if (md != NULL && md->length() > idnum) {
     md->at_put(idnum, anno);
   } else if (anno != NULL) {
     // create the array
     int length = MAX2(idnum+1, (int)ik->idnum_allocated_count());
     md = MetadataFactory::new_array<AnnotationArray*>(ik->class_loader_data(), length, CHECK);
     if (*md_p != NULL) {
       // copy the existing entries
       for (int index = 0; index < (*md_p)->length(); index++) {
         md->at_put(index, (*md_p)->at(index));
       }
     }
     set_annotations(md, md_p);
     md->at_put(idnum, anno);
   } // if no array and idnum isn't included there is nothing to do
 }
 // Keep created annotations in a global growable array (should be hashtable)
 // need to add, search, delete when class is unloaded.
 // Does it need a lock?  yes.  This sucks.
 // Copy annotations to JVM call or reflection to the java heap.
 typeArrayOop Annotations::make_java_array(AnnotationArray* annotations, TRAPS) {
   if (annotations != NULL) {
     int length = annotations->length();
     typeArrayOop copy = oopFactory::new_byteArray(length, CHECK_NULL);
     for (int i = 0; i< length; i++) {
       copy->byte_at_put(i, annotations->at(i));
     }
     return copy;
   } else {
     return NULL;
   }
 }
 void Annotations::print_value_on(outputStream* st) const {
   st->print("Anotations(" INTPTR_FORMAT ")", this);
 }
 #define BULLET  " - "
 #ifndef PRODUCT
 void Annotations::print_on(outputStream* st) const {
   st->print(BULLET"class_annotations            "); class_annotations()->print_value_on(st);
   st->print(BULLET"fields_annotations           "); fields_annotations()->print_value_on(st);
   st->print(BULLET"methods_annotations          "); methods_annotations()->print_value_on(st);
   st->print(BULLET"methods_parameter_annotations"); methods_parameter_annotations()->print_value_on(st);
   st->print(BULLET"methods_default_annotations  "); methods_default_annotations()->print_value_on(st);
 }
 #endif // PRODUCT

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/oops/annotations.cpp@da91efe96a93 (annotated)

src/share/vm/oops/annotations.cpp