jdk8-mips64-public/hotspot: src/share/vm/ci/ciMetadata.hpp@da91efe96a93 (annotated)

src/share/vm/ci/ciMetadata.hpp@da91efe96a93 (annotated)

src/share/vm/ci/ciMetadata.hpp

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

author: coleenp
date: Sat, 01 Sep 2012 13:25:18 -0400
changeset 4037: da91efe96a93
child 4267: bd7a7ce2e264
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) 1999, 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.
  *
  */
 #ifndef SHARE_VM_CI_CIMETADATA_HPP
 #define SHARE_VM_CI_CIMETADATA_HPP
 #include "ci/ciBaseObject.hpp"
 #include "ci/ciClassList.hpp"
 #include "memory/allocation.hpp"
 #include "runtime/handles.hpp"
 #include "runtime/jniHandles.hpp"
 // ciMetadata
 //
 // Compiler interface to metadata object in the VM, not Java object.
 class ciMetadata: public ciBaseObject {
   CI_PACKAGE_ACCESS
   friend class ciEnv;
  protected:
   Metadata* _metadata;
   ciMetadata(): _metadata(NULL) {}
   ciMetadata(Metadata* o): _metadata(o) {}
   virtual bool is_classless() const         { return false; }
  public:
   bool is_loaded() const { return _metadata != NULL || is_classless(); }
   virtual bool is_metadata() const          { return true; }
   virtual bool is_type() const              { return false; }
   virtual bool is_cpcache() const           { return false; }
   virtual bool is_return_address() const    { return false; }
   virtual bool is_method() const            { return false; }
   virtual bool is_method_data() const       { return false; }
   virtual bool is_klass() const             { return false; }
   virtual bool is_instance_klass() const    { return false; }
   virtual bool is_array_klass() const       { return false; }
   virtual bool is_obj_array_klass() const   { return false; }
   virtual bool is_type_array_klass() const  { return false; }
   ciMethod*                as_method() {
     assert(is_method(), "bad cast");
     return (ciMethod*)this;
   }
   ciMethodData*            as_method_data() {
     assert(is_method_data(), "bad cast");
     return (ciMethodData*)this;
   }
   ciSymbol*                as_symbol() {
     assert(is_symbol(), "bad cast");
     return (ciSymbol*)this;
   }
   ciType*                  as_type() {
     assert(is_type(), "bad cast");
     return (ciType*)this;
   }
   ciReturnAddress*         as_return_address() {
     assert(is_return_address(), "bad cast");
     return (ciReturnAddress*)this;
   }
   ciKlass*                 as_klass() {
     assert(is_klass(), "bad cast");
     return (ciKlass*)this;
   }
   ciInstanceKlass*         as_instance_klass() {
     assert(is_instance_klass(), "bad cast");
     return (ciInstanceKlass*)this;
   }
   ciArrayKlass*            as_array_klass() {
     assert(is_array_klass(), "bad cast");
     return (ciArrayKlass*)this;
   }
   ciObjArrayKlass*         as_obj_array_klass() {
     assert(is_obj_array_klass(), "bad cast");
     return (ciObjArrayKlass*)this;
   }
   ciTypeArrayKlass*        as_type_array_klass() {
     assert(is_type_array_klass(), "bad cast");
     return (ciTypeArrayKlass*)this;
   }
   Metadata* constant_encoding() { return _metadata; }
   bool equals(ciMetadata* obj) const { return (this == obj); }
   int hash() { return ident() * 31; } // ???
   void print(outputStream* st);
   virtual void print_impl(outputStream* st) {}
   virtual const char* type_string() { return "ciMetadata"; }
   void print()  { print(tty); }
   void print_metadata(outputStream* st = tty);
 };
 #endif // SHARE_VM_CI_CIMETADATA_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/ci/ciMetadata.hpp@da91efe96a93 (annotated)

src/share/vm/ci/ciMetadata.hpp