1 /*
   2  * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "memory/iterator.inline.hpp"
  27 #include "memory/universe.hpp"
  28 #include "oops/oop.inline.hpp"
  29 #include "utilities/debug.hpp"
  30 #include "utilities/globalDefinitions.hpp"
  31 
  32 DoNothingClosure do_nothing_cl;
  33 
  34 void CLDToOopClosure::do_cld(ClassLoaderData* cld) {
  35   cld->oops_do(_oop_closure, _must_claim_cld);
  36 }
  37 
  38 void ObjectToOopClosure::do_object(oop obj) {
  39   obj->oop_iterate(_cl);
  40 }
  41 
  42 void VoidClosure::do_void() {
  43   ShouldNotCallThis();
  44 }
  45 
  46 void CodeBlobToOopClosure::do_nmethod(nmethod* nm) {
  47   nm->oops_do(_cl);
  48   if (_fix_relocations) {
  49     nm->fix_oop_relocations();
  50   }
  51 }
  52 
  53 void CodeBlobToOopClosure::do_code_blob(CodeBlob* cb) {
  54   nmethod* nm = cb->as_nmethod_or_null();
  55   if (nm != NULL) {
  56     do_nmethod(nm);
  57   }
  58 }
  59 
  60 void MarkingCodeBlobClosure::do_code_blob(CodeBlob* cb) {
  61   nmethod* nm = cb->as_nmethod_or_null();
  62   if (nm != NULL && !nm->test_set_oops_do_mark()) {
  63     do_nmethod(nm);
  64   }
  65 }
  66 
  67 // Generate the *Klass::oop_oop_iterate functions for the base class
  68 // of the oop closures. These versions use the virtual do_oop calls,
  69 // instead of the devirtualized do_oop_nv version.
  70 ALL_KLASS_OOP_OOP_ITERATE_DEFN(ExtendedOopClosure,  _v)
  71 
  72 // Generate the *Klass::oop_oop_iterate functions
  73 // for the NoHeaderExtendedOopClosure helper class.
  74 ALL_KLASS_OOP_OOP_ITERATE_DEFN(NoHeaderExtendedOopClosure, _nv)