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 }