1 /*
2 * Copyright (c) 2003, 2015, 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 #ifndef SHARE_VM_SERVICES_SERVICEUTIL_HPP
26 #define SHARE_VM_SERVICES_SERVICEUTIL_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "oops/objArrayOop.hpp"
30
31 //
32 // Serviceability utility functions.
33 // (Shared by MM and JVMTI).
34 //
35 class ServiceUtil : public AllStatic {
36 public:
37
38 // Return true if oop represents an object that is "visible"
39 // to the java world.
40 static inline bool visible_oop(oop o) {
41 // the sentinel for deleted handles isn't visible
42 if (o == JNIHandles::deleted_handle()) {
43 return false;
44 }
45
46 // instance
47 if (o->is_instance()) {
48 // instance objects are visible
49 if (o->klass() != SystemDictionary::Class_klass()) {
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1 /*
2 * Copyright (c) 2003, 2016, 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 #ifndef SHARE_VM_SERVICES_SERVICEUTIL_HPP
26 #define SHARE_VM_SERVICES_SERVICEUTIL_HPP
27
28 #include "classfile/systemDictionary.hpp"
29 #include "oops/objArrayOop.hpp"
30 #include "oops/oop.inline.hpp"
31
32 //
33 // Serviceability utility functions.
34 // (Shared by MM and JVMTI).
35 //
36 class ServiceUtil : public AllStatic {
37 public:
38
39 // Return true if oop represents an object that is "visible"
40 // to the java world.
41 static inline bool visible_oop(oop o) {
42 // the sentinel for deleted handles isn't visible
43 if (o == JNIHandles::deleted_handle()) {
44 return false;
45 }
46
47 // instance
48 if (o->is_instance()) {
49 // instance objects are visible
50 if (o->klass() != SystemDictionary::Class_klass()) {
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