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annotate src/share/vm/services/serviceUtil.hpp @ 3678:9482471a7dfa
IdealGraphVisualizer: add a workaround to fix layouting of the QuickSearch combobar with the GTK look and feel
author | Peter Hofer <peter.hofer@jku.at> |
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date | Mon, 21 Nov 2011 15:54:32 +0100 |
parents | f95d63e2154a |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
0 | 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 // ignore KlassKlass | |
47 if (o->is_klass()) { | |
48 return false; | |
49 } | |
50 | |
51 // instance | |
52 if (o->is_instance()) { | |
53 // instance objects are visible | |
1142 | 54 if (o->klass() != SystemDictionary::Class_klass()) { |
0 | 55 return true; |
56 } | |
57 if (java_lang_Class::is_primitive(o)) { | |
58 return true; | |
59 } | |
60 // java.lang.Classes are visible | |
61 o = java_lang_Class::as_klassOop(o); | |
62 if (o->is_klass()) { | |
63 // if it's a class for an object, an object array, or | |
64 // primitive (type) array then it's visible. | |
65 klassOop klass = (klassOop)o; | |
66 if (Klass::cast(klass)->oop_is_instance()) { | |
67 return true; | |
68 } | |
69 if (Klass::cast(klass)->oop_is_objArray()) { | |
70 return true; | |
71 } | |
72 if (Klass::cast(klass)->oop_is_typeArray()) { | |
73 return true; | |
74 } | |
75 } | |
76 return false; | |
77 } | |
78 // object arrays are visible if they aren't system object arrays | |
79 if (o->is_objArray()) { | |
80 objArrayOop array = (objArrayOop)o; | |
81 if (array->klass() != Universe::systemObjArrayKlassObj()) { | |
82 return true; | |
83 } else { | |
84 return false; | |
85 } | |
86 } | |
87 // type arrays are visible | |
88 if (o->is_typeArray()) { | |
89 return true; | |
90 } | |
91 // everything else (methodOops, ...) aren't visible | |
92 return false; | |
93 }; // end of visible_oop() | |
94 | |
95 }; | |
1972 | 96 |
97 #endif // SHARE_VM_SERVICES_SERVICEUTIL_HPP |